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MDS P-60/P-60 HL

Packaged Radio SystemIncluding Reference Material for Legacy

MDS P-50 Packaged Models

RSPSupply - 1-888-532-2706 - www.RSPSupply.comhttp://www.RSPSupply.com/p-8466-MDS-P60-Compact-Enclosure-(One-Radio).aspx

MDS 05-2818A01, Rev. C MDS P-60/P-60 HL Reference Manual i

TABLE OF CONTENTS

1.0 Introduction.................................................................................. 7

1.1 About This Manual ...........................................................................7

1.2 Equipment Description .....................................................................8

1.3 Accessories .................................................................................... 11

2.0 MDS P-60 Installation ................................................................ 12

2.1 Unpacking and Inspection ..............................................................12

2.2 Installation Considerations .............................................................12

2.3 Mounting the Enclosure .................................................................12

2.4 MDS P-60 Cable Connections .......................................................17

2.5 Audio and Keyline Connections—Analog Interface/Utility Board (P/N 03-2110A01) ................................................................19

2.6 Data Connections—Digital Interface/Utility Board (P/N 03-2472Axx) ......................................................23

2.7 Final MDS P-60 Installation Tasks .................................................25

3.0 MDS P-50 installation ................................................................ 26

3.1 Unpacking and Inspection ..............................................................26

3.2 Installation Considerations .............................................................26

3.3 Mounting the Enclosure .................................................................26

3.4 MDS P-50 Cable Connections .......................................................31

3.5 Analog Interface/Utility Board Connections (P/N 03-1105A21) ......32

3.6 Digital Interface/Utility Board Connections(P/N 03-1467A21) ..........................................................................36

3.7 Final MDS P-50 Installation Tasks .................................................38

4.0 P-60/P-50 Operation.................................................................. 39

4.1 Introduction ....................................................................................39

4.2 Initial Power-Up ..............................................................................39

4.3 Interface/Utility Board Features and Indicators ..............................42

5.0 Servicing Data ........................................................................... 47

5.1 Introduction ....................................................................................47

5.2 Preventive Maintenance .................................................................47

5.3 Fuse Replacement .........................................................................47

5.4 Backup Battery ...............................................................................48

5.5 System Troubleshooting ................................................................50

5.6 List of Replaceable Assemblies .....................................................51

5.7 Packaged System Adjustments—MDS P-60 .................................52

5.8 Service Drawings and Reference Data—MDS P-60 ......................................................................................55

5.9 Packaged System Adjustments—MDS P-50 .................................64


ii MDS P-60/P-60 HL Reference Manual MDS 05-2818A01, Rev. C

5.10 Order Wire Levels (Analog Interface/Utility Board P/N 03-1105A21) ........................................................................... 65

5.11 Service Drawings and Reference Data—MDS P-50 ......................................................................................66

Copyright NoticeThis Installation and Operation Guide and all software described herein are protected by Copyright: 2009 GE MDS, LLC. All rights reserved.

GE MDS reserves its right to correct any errors and omissions.

Operational Safety NoticesThe radio equipment described in this guide emits radio frequency energy. Although the power level is low, the concentrated energy from a directional antenna may pose a health hazard. Do not allow people to come in close proximity to the front of the antenna when the transmitter is operating.

This manual is intended to guide a professional installer to install, operate and perform basic system maintenance on the described radio.

ISO 9001 RegistrationGE MDS’ adherence to this internationally accepted quality system standard provides one of the strongest assurances of product and service quality available.

GE MDS Quality Policy StatementWe, the employees of GE MDS, are committed to achieving total cus-tomer satisfaction in everything we do.

Total Customer Satisfaction in:• Conception, design, manufacture and marketing of our products.• Services and support we provide to our internal and external

customers.

Total Customer Satisfaction Achieved Through:• Processes that are well documented and minimize variations.• Partnering with suppliers who are committed to providing quality and

service.• Measuring our performance against customer expectations and

industry leaders.• Commitment to continuous improvement and employee involvement.

RF Exposure


MDS 05-2818A01, Rev. C MDS P-60/P-60 HL Reference Manual iii

NoticeWhile every reasonable effort has been made to ensure the accuracy of this manual, product improvements may result in minor differences between the manual and the product shipped to you. If you have addi-tional questions or need an exact specification for a product, please con-tact our Customer Service Team using the information at the back of this guide. In addition, manual updates can often be found on the GE MDS Web site at www.gemds.com.

Environmental InformationThe manufacture of this equipment has required the extraction and use of natural resources. Improper disposal may contaminate the environ-ment and present a health risk due to hazardous substances contained within. To avoid dissemination of these substances into our environ-ment, and to limit the demand on natural resources, we encourage you to use the appropriate recycling systems for disposal. These systems will reuse or recycle most of the materials found in this equipment in a sound way. Please contact GE MDS or your supplier for more information on the proper disposal of this equipment.


iv MDS P-60/P-60 HL Reference Manual MDS 05-2818A01, Rev. C


MDS 05-2818A01, Rev. C MDS P-60/P-60 HL Reference Manual 7

1.0 INTRODUCTION

1.1 About This Manual

This manual explains how to install and operate GE MDS packaged radio sys-tems. It is a companion to the transceiver instruction manual that is shipped with our packaged system units. After installation, we suggest that you keep this manual with the transceiver manual for future reference.

This manual is arranged into five chapters:

• Chapter 1—IntroductionTells how the manual is organized and describes the features and differ-ences of the various packaged systems. You are in this section now.

• Chapter 2—MDS P-60 InstallationProvides the steps to mount the MDS P-60 and make the cable connec-tions.

• Chapter 3—MDS P-50 InstallationProvides the steps to mount the MDS P-50 and make the cable connec-tions.

• Chapter 4—OperationContains instructions for placing the units into normal service and describes how to connect plug-in accessories such as a diagnostic ter-minal and order wire handset.

• Chapter 5—Servicing DataPresents adjustment procedures, assembly drawings and a list of replaceable assemblies for the packaged systems. Also includes a sec-tion on preventive maintenance and a troubleshooting chart to help resolve system difficulties.

NOTE: Keep in mind that this manual is a system-level guide for the pack-aged radio systems. Radio model numbers, and information aboutspecific radios , are not included in this manual un less there is anexception to installation or operation. For specific radio information,refer to the transceiver manual shipped with your unit.

GE MDS radios are designated by a model number, which indicates the radio’s operating frequency, type (licensed or spread spectrum), and packaging. The model number of an unpackaged, licensed 200 MHz radio is shown below as an example.

Example:

Radios shipped as part of a P-60 or P-50 packaged radio system will have a model number ending in -60 or -50.

Chassis configuration (10=no chassis)

7=Licensed narrow-band radio, 8=Unlicensed spread spectrum radio

Frequency band (usually) (for example, 2=200 MHz)

2 7 1 0


8 MDS P-60/P-60 HL Reference Manual MDS 05-2818A01, Rev. C

1.2 Equipment Description

GE MDS packaged systems include a radio transceiver, power supply (with battery backup for AC-powered models) and Interface/Utility Board normally mounted inside a weather resistant, padlockable enclosure. The only connec-tions required are for primary power, antenna, and interface connection to the customer-supplied equipment. All of these wiring connections are made within the housing, leaving no connections exposed to weather.

The one-box design makes packaged systems well suited for outdoor mounting, and for use in areas with limited space. Packaged systems are nor-mally installed in wall-mount or pole-mount configurations, but an optional plate is available for mounting the system in a 19 inch rack.

NOTE: Due to restricte d ventilation, the P-60 enclosure is not suitable forapplications employing a continuously-keyed radio, such as a masterstation or repeater. Overhe ating may occur in these si tuations,causing component failures in transceivers.

Enclosure Types

Figure 1 shows the two cabinet styles commonly used in the packaged system family. Each is a gray fiberglass NEMA-approved enclosure.

• The MDS P-60 is a compact model measuring 13.75 inches high x 11.85 inches wide x 6.5 inches deep (35cm x 30.1cm x 16.5cm). This model has less space inside for mounting of customer equipment, but is ideal for use in locations where space is limited.

• The MDS P-50 is a discontinued model that is typically contained in a large enclosure measuring 19.5 inches high x 17.5 inches wide x 9.5 inches deep (49.5cm x 44.5cm x 24.1cm). Extra space in the cabinet may be used to mount customer-supplied equipment, if desired.

Invisible place holder

Figure 1. GE MDS Packaged Radio SystemsShown with covers closed



WARNING! P-60 units installed in a hazardous environment (P-60 HL)require special installation procedur es in addition to the instructionsprovided in this manual. Refer to and comply with P-60 HL PackagedRadio - Hazardous Locations Installation Procedure (P000530) wheninstalling these units.

MDS P-60 Units Equipped with MDS iNET or TransNET Transceivers

The P-60 can be equipped with various transceiver types. Depending on order requirements, the enclosure might contain one of MDS’ newer generation transceivers, such as an MDS iNET or MDS TransNET Series. These units are housed in blue, die-cast aluminum enclosures and are mounted with brackets that attach to the bottom of the radio and extend out the sides.

In addition to the standard TransNET radio, there is also a board-only version of this product that can be installed in a P-60. While electrically and operation-ally similar to the standard (metal-enclosed) TransNET, it does not have a full enclosure. It is fitted with a non-metallic cover through which four mounting screws are inserted to secure it to the P-60 plate.

These new generation transceivers are described below:

• The MDS iNET is a license-free IP/Ethernet transceiver measuring 1.50" high x 6.00" wide x 4.00" deep (3.8 x 15.2 x 10.2 cm). (Note: Only three screws are used to mount MDS iNET models to the P-60 plate.)

• The MDS TransNET is a license-free serial data transceiver measuring 1.40" high x 5.30" wide x 3.50" deep (3.8 x 15.2 x 10.2 cm).

• The MDS TransNET 900 Board-Only transceiver is operationally sim-ilar to the standard TransNET, but includes a non-metallic cover, and measures 1.40" high x 5.30" wide x 3.50" deep (3.8 x 15.2 x 10.2 cm).

Figure 2. MDS iNET and TransNET Transceivers

Primary Power

Packaged systems can be equipped for a variety of AC or DC power supply requirements. In addition, a 12 volt backup battery is provided as standard equipment in AC-powered models. The battery provides at least four hours of operation in the event of a primary power failure. (Depending on the transmit duty cycle and how often the radio is polled, the battery may last much longer.) The backup battery is float charged by the power supply during normal system operation.

MDS TransNETTransceiver

MDS TransNETBoard-Only Transceiver

MDS iNET IP/EthernetTransceiver



Programming and Diagnostics

Transceiver programming and diagnostics are performed by connecting an MDS Hand-Held Terminal (HHT) or PC running MDS software. With MDS P-60 models, an HHT can be plugged directly into the packaged system’s Inter-face/Utility Board. This eliminates the need for unplugging the data cable from the transceiver’s INTERFACE connector. Instructions for connecting a diag-nostic terminal are given in Section 4.0 P-60/P-50 Operation on Page 39.

Packaged System Specifications*

* Specifications are subject to change without notice. For radio specifications, referto the associated transceiver instruction manual.

Enclosure Dimensions:(excluding hardware)

MDS P-60:13.75 inches H x 11.85 inches W x 6.5 inches D(35 x 30.1 x 16.5 cm)

MDS P-50:19.5 inches H x 17.5 inches W x 9.5 inches D(49.5 x 44.5 x 24.1 cm)

Approximate Weight:(with backup battery)

MDS P-60:21 lb. (9.53 kg)

MDS P-50:33 lb. (15 kg)

Enclosure Impact Resistance: Tested to 6.78 Joule (5 ft./lb.)

Transceiver types used in packaged systems: MDS x710 Series, MDS x810 Series, MDS 2300/4300/9300 Series, MDS iNET, MDS TransNET, Mercury, and others

Temperature Range: Full performance: –30°C to +60°C(Reduced battery life at cold temperatures)

Humidity: 95% at + 40°C Non-Condensing

Primary Power Options: 12, 24, 48, 120 Vdc120–220 Vac

Typical Supply Current:(Excluding battery-charging current)

Transmit: 1.8 A @ 5 watts1.0 A @ 1 wattReceive: 80 mA maximumStandby (transceiver in “sleep” mode): <15 mA

Backup Power Provision:(Standard on AC-powered models.)

12 volt battery4.6 Ah for P-60 series, 5 Ah for P-50 series



1.3 Accessories

GE MDS publishes an Accessories Selection Guide which lists a complete array of additional items available for use with this product. Please contact your factory representative or visit www.GEmds.com to obtain a copy of this guide.

Table 1. P-60 Accessories

GE MDS Part Number Description

12-1307A01 Order Wire Handset

02-1501A01 Hand-Held Terminal (Kit P/N 03-1501A01)

82-1982A02 Mounting plate for 19 inch rack; 10.5 inches high (mounts internal chassis)

Table 2. P-50 Accessories

GE MDS Part Number Description

82-1743A01 Pole-Mount Adapters (two required)

12-1307A01 Order Wire Handset

02-1501A01 Hand-Held Terminal (Kit P/N 03-1501A01)

02-1556A01 Mounting kit for 19 inch rack; 15.75 inches high (mounts internal chassis)



2.0 MDS P-60 INSTALLATION

NOTE: Due to restricte d ventilation, the P-60 enclosure is not suitable forapplications using a continuously transmitting radio.

2.1 Unpacking and Inspection

After opening the shipping container, check the contents against the packing list secured to the outside of the box. We recommend saving all shipping mate-rials in case the unit needs to be shipped in the future.

The factory test data sheet is normally packed with the equipment. Check this sheet to ensure that the packaged radio system has been configured to meet your requirements. Specific items to check include: primary power voltage, transmit and receive frequencies, modem speed (if applicable), FM deviation, and transmitter RF power output. If there are discrepancies, contact GE MDS’ Customer Support at +1 (585) 242-9600 for assistance.

2.2 Installation Considerations

A short time spent planning the installation can help prevent performance problems later on. Select a location that provides a stable mounting surface, and also allows for convenient routing of the antenna, power and data cabling. All of these cables (but especially the antenna feedline) need to be kept as short as possible to minimize losses. Refer to the transceiver manual for a feedline loss chart.

Packaged systems are normally mounted in either a wall-mount or pole-mount configuration. If possible, install the unit in a location that can be easily reached while standing on the ground. This allows convenient access for test and servicing of the radio system.

If the unit must be installed in a location that is not easily accessible, it may be desirable to first operate the packaged system on a test bench to verify proper operation with customer-supplied equipment and to set any programmable parameters before installation. However, installation tasks such as antenna aiming and SWR checks should be done with the unit placed in its final oper-ating position.

NOTE: The use of stainless steel mounting hardware is recommended foroutdoor installations.

2.3 Mounting the Enclosure

There are two basic mounting arrangements for the MDS P-60—pole mount or wall mount. Methods for mounting the unit in both of these configurations follow. When planning the installation, refer to Figure 3 on Page 13, which shows the mounting dimensions of the MDS P-60 packaged system.




Figure 3. MDS P-60 Mounting Dimensions

Wall Mounting Instructions

The steps below describe mounting of the MDS P-60 unit to a wall or other flat surface. Ordinary lag screws (with flat washers) can be used for mounting to a wooden surface. If it is to be mounted to a drywall, masonry or other non-wooden surface, suitable fasteners will be required that can support the weight of the unit.

To wall mount the unit, follow these instructions:

1. Attach the four keyhole mounting clips (provided) to the back of the enclosure with 10-32 screws, as shown in Figure 4 on Page 14. The screws must be no longer than 3/8" (9.5 mm). Longer screws will damage the enclosure.



2. Hold the packaged unit up to the wall in the desired mounting position. Have an assistant mark the four mounting holes with a pencil or marker. (The marks should be placed in the center of the wide portion of the mounting clips.)

3. Prepare the mounting surface for the fasteners to be used. (If using lag screws, a small pilot hole at each mark will allow easier starting of the screw.)

4. Insert the screws part way into the wall, leaving enough space to slide the enclosure mounting clips onto the screws. Hang the packaged system enclosure onto the four screws and tighten the screws securely. Do not over-tighten.

Figure 4 shows a typical wall mount installation.

Figure 4. Typical Wall Mounted Installation (MDS P-60)

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Pole Mounting Instructions

Standard pole mounting requires the use of two pole-mount adapters (P/N 82-1743A01). These brackets must first be bolted to the MDS P-60 enclosure. The complete assembly can then be mounted to a wooden utility pole with two lag screws or with two long bolts that extend through the pole. (Threaded rod can also be used for through-the-pole mounting.) In either case, it is important to use flat washers with the attaching hardware (fasteners are not supplied).

To pole mount the unit, follow these instructions:

1. Attach the two pole-mount adapter brackets to the MDS P-60 enclosure with four 10-32 screws, as shown in Figure 5. The screws must be no longer than 3/8" (9.5 mm). Longer screws will damage the enclosure.

2. With the help of an assistant, position the MDS P-60 enclosure on the pole at the desired mounting point.

3. Install the attaching hardware (with flat washers) in the center hole of the two brackets.

4. Tighten the fasteners securely, but do not over-tighten.

Figure 5 shows a typical pole-mount installation with lag screws.


Figure 5. Typical Pole-Mounted Installation (MDS P-60)

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Other pole-mount hardware is available for the MDS P-60, including a mounting bracket with a sun shield (for use in excessively hot climates), a tower mounting bracket, and other arrangements to meet special needs. Con-tact GE MDS for more information.

Rack Mount Alternative

In addition to wall and pole mounting, the packaged system can also be mounted in a 19 inch equipment rack for indoor installations. Figure 6 shows a typical rack mount installation using brackets fabricated from steel or alu-minum. Figure 7 on Page 17 details the mounting plate configuration.

The electrical installation procedures given in this section apply fully to rack mounted units. The physical mounting instructions, however, will differ, depending on the type of rack cabinet to be used. Contact GE MDS if addi-tional assistance is required.


Figure 6. Typical Rack Mount Installation (MDS P-60)



2.4 MDS P-60 Cable Connections

This section describes the connection of external cabling to the MDS P-60 packaged system. Included are steps for connecting DC power, the station antenna, and data equipment (RTU) cabling. Figure 7 shows an overall view of the connection points for all external cabling. Subsequent illustrations will show more detailed views of wiring connections as required.


Figure 7. MDS P-60 Cable Connection Points

Primary Power—TB2

The power input terminations for the MDS P-60 are provided on the Inter-face/Utility Board connector TB2 via screw terminals (see Figure 8 on Page 19). Note that TB2 is used for input power regardless of whether the unit is configured for AC or DC operation. Primary power wiring should be routed via conduit to the hole on the bottom right of the enclosure. This hole is fitted with a standard 1-1/4" (3.37 cm) conduit coupling.

CAUTION: The MDS P-60 is available for operation on a wide varietyof AC or DC supply voltages. Be sure to check the label near TB2 andmake sure that the supply voltage you are using matches that specifiedon the label before applying power. Use of an incorrect supply voltagecan permanently damage the radio, power supply, or both.

DC Operation

Connector TB2 is used for primary power input on DC-powered models. Pin 1 is the negative (–) connection. Pin 3 is the positive (+) connection.

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The MDS P-60 is normally wired by the factory for “floating” power connec-tions. However, either of the primary power leads can be connected to TB2 Pin 2 (chassis ground), if desired, to configure the unit for positive or negative ground.

AC Operation

Connector TB2 is used for primary power input on AC-powered models. Pins 1 and 3 are the AC line inputs. The AC Ground must be connected to Pin 2 (chassis ground).

AC power supplies are most commonly wired for 120 Vac, but can readily be rewired for 230 Vac if desired. There is a chart on the side of the power supply; unmount the power supply to view it.

Power Supply Bypass Plug

The MDS part number for the Power Supply Bypass plug (used on models without a DC-DC converter) is 03-1304A01.

Accessory Power—With Analog Interface/Utility Board Installed

Interface terminal block TB1 Pin 12 can be used to provide up to 1 ampere for 13 Vdc negative ground accessories. TB1 Pin 11 is the negative connection. Fuse F5 provides protection for this accessory power.

Backup Battery—Important information

Packaged systems supplied wired for AC operation have a backup battery system installed as standard equipment. The battery is disconnected for ship-ping by unplugging its cable from the Interface/Utility Board. This prevents accidental discharge of the battery and radio operation while the unit is in ship-ment or storage. Plug the battery cable into J4 to enable the backup power option.

Antenna Connection

A type-N coaxial connector on the lower right side of the transceiver chassis serves as the antenna connection to the packaged system. Route the antenna coax through the weathertight bushing on the bottom of the enclosure and attach it to the transceiver connector. This bushing is also commonly used to pass the RTU interface through to the Interface/Utility Board. Do not tighten it until all cabling has been installed.

The antenna connection is not made directly to MDS iNET and TransNET transceivers, as with other MDS radios. A pigtail coaxial lead is provided (P/N 03-3576A01), that makes the antenna connection readily accessible, and con-verts it from a TNC connector to a Type-N connector. After connecting the antenna feedline to the pigtail connector, the assembly should be well insulated (for example, electrical tape or shrink tubing) to prevent contact with other cir-cuitry inside the P-60 housing.

Refer to the transceiver manual for additional information on installing antennas and feedlines.

NOTE: The following subs ection describes audio and keyline connectionsto an MDS P-60 Analog Interface/Utility Board (P/N 03-2110A01).Instructions for the Digital Interface/Utility Board are given in thenext major subsection.



2.5 Audio and Keyline Connections—Analog Interface/Utility Board (P/N 03-2110A01)

The Analog Interface/Utility Board serves as the connection point for all audio and keyline connections to the MDS P-60. Route the cabling to the Inter-face/Utility Board through the weathertight bushing on the bottom of the enclosure (also used for the antenna coaxial cable). Tighten the bushing after installing the interface cable.

Interface/Utility Board connections are made through two compres-sion-screw-type plug assemblies (see Figure 8). The plug assemblies are removed by sliding the connectors away from the center of the PC board. There is a pair of small clips on the plug that prevent the connectors from falling out of the PCB mounted receptacles.


Figure 8. Plugs for Primary Power TB2and Interface TB1 Connectors

Audio and Keyline—TB1

Connector TB1 on the Analog Interface/Utility Board is used for all audio and keyline terminations. Table 3 lists the pin assignments for TB1. When making connections, refer to Figure 9 on Page 20 for a detailed view of the Analog Interface/Utility Board.

Table 3. Pin Connections (Analog Interface/Utility Board)

TB1 Pins

Connection Remarks

1 & 2 Transmit Audio 600 , balanced

3 Ground

4 & 5 Receive Audio 600 , balanced

6 Ground

7 & 8 Keyline connection for positive or negative keying

This arrangement allows the radio to be keyed by a variety of different methods that will accommodate most systems. For more information, see “Keyline Options” discussion below.




Figure 9. Analog Interface/Utility Board, P/N 03-2110A01

Keyline Options

Several methods may be used to key the transceiver, depending on the facilities available at the installation site and the design of the customer-supplied data equipment. (See Figure 10 on Page 22.) This section discusses three common keying methods. Contact the factory if further assistance is required.

Positive or Negative Keying

One keyline option is to use a keyed 12 to 25 volt source or a fixed voltage source and a series relay. The relay contacts can be included in either the pos-itive or negative supply lead. (See Figure 10 on Page 22, examples 1 and 2.) The use of an opto-isolator allows both keying supply leads to “float” above or below ground, and tolerates line to ground transients up to 2500 volts. TB1 Pin 7 must be positive with respect to TB1 Pin 8. For keying supply voltages higher than 25 volts, add a resistor in series with the connection to TB1 Pin 7 or TB1 Pin 8 to limit the keying current to 10 to 20 mA.

9 AC Alarm Normally 11 Vdc; drops to zero volts if an AC failure occurs.

10 Received Signal Strength Indication (RSSI)

Approximately 0 to 5 Vdc through a 10K resistor.

8 & 11 Keyline connection when an internal current source is used. (Requires a jumper between Pins 7 and 12.)

This method uses the on-board 12 volt DC supply. For more information, see “Keyline Options” discussion below.

12 +13 Vdc Accessory power (1 Amp maximum). Jumpered to Pin 7 for keying with an internal current source. See description for Pins 8 & 11 above.

Table 3. Pin Connections (Analog Interface/Utility Board) (Continued)

TB1 Pins

Connection Remarks

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Internal Current Source Keying

Another keyline option is to use the on-board 12 volt DC supply. This is done by adding a jumper from TB1 Pin 7 to Pin 12. TB1 Pins 8 and 11 should then be connected to the keyline relay contacts. (See Figure 10 on Page 22, example 3.)

Manual Keying Button (for test purposes)

A red pushbutton switch, SW1, is provided on the Interface/Utility Board to key the transmitter manually when desired. This is intended for use during ini-tial setup and testing of the packaged system.

NOTE: The Transmit Test Key, SW1, on the Interface/Utility Board isnon-functional with MDS iNET or TransNET radios.

Additional Interface Connections

Two unique outputs are provided on TB1 for custom applications: AC power failure alarm, and the transceiver’s Received Signal Strength Indication (RSSI).

AC Alarm —Pin 9

H = AC Present—Approximately 11 Vdc through a 1 K resistor

L = AC Failure—Ground through a 1 K resistor

Received Signal Strength Indicator (RSSI)—Pin 10

Same as transceiver’s RSSI output. It provides a DC voltage proportional to the received signal strength. The range is approximately zero to five volts DC through a 10K current limiting resistor. Refer to the transceiver manual for additional RSSI information.

For MDS iNET and TransNET Radios

The Orderwire and Diagnostic connectors on the Interface/Utility Board are not used when MDS iNET or TransNET radios are installed. Orderwire and diagnostic connections must be made directly at the radio, using appropriately wired connectors. Refer to the transceiver manual for pinout information.

The TransNET’s Sleep and Alarm lines are not carried onto the P-60 terminal strip, J1/TB1. If these functions are required, make the connection directly at the radio, using an appropriately wired connector.

Two interface cables are packed inside each P-60 when an MDS iNET or TransNET radio is installed. The proper cable must be identified by the user and installed between the radio’s DB-9 data connector and J2 on the Inter-face/Utility Board.

• The 03-2848A01 cable is for use with an iNET radio’s COM2 port.• The 03-2876A01 cable is for use with either a TransNET radio, or an

iNET radio’s COM1 port.

P-60 units with an MDS iNET transceiver installed include an Ethernet Tran-sient Protector that is mounted at the bottom of the enclosure. A heavy ground wire (green) extends between the stud on the protector, and the P-60’s ground point.




Figure 10. Keying Options, Analog Interface/Utility Board, P/N 03-2110A01



2.6 Data Connections—Digital Interface/Utility Board (P/N 03-2472Axx)

The Digital Interface/Utility Board serves as the connection point for all data connections to the MDS P-60. Route the cabling to the Interface/Utility Board through the weathertight bushing on the bottom of the enclosure (also used for the antenna coaxial cable). Tighten the bushing after installing the interface cable.

Interface/Utility Board connections are made through two compres-sion-screw-type plug assemblies. The plug assemblies are removed by sliding the connectors away from the center of the PC board. There is a pair of small clips on the plug that prevent the connectors from falling out of the PCB mounted receptacles.

RS-232/EIA-232 Data Connections—TB1

Table 4 lists the functions of the RS-232/EIA-232 pins on TB1 of the Digital Interface/Utility Board. When making connections, refer to Figure 11 on Page 24 for a detailed view of the Digital Interface/Utility Board.

*DSR wired to +8 V in the transceiver.†Not applicable for x710 or x810 radios, which are asynchronous

NOTES

1. The radio is configured as DCE (Data Circuit-terminating Equipment)as opposed to DTE (Data Terminal Equipment).

2. These lines are inputs: ETC, TXD and RTS.3. These lines are outputs: TC, RC, RXD, CTS, DSR and DCD.4. For asynchronous operation, make no connection to Pins 8, 9 or 10.

Table 4. Interface/Utility Board TB1 Connections

Pin Number and Function

1. Signal & Protective Ground (usually pin 1)

2. Transmit Data In (TXD)

3. Received Data Out (RXD)

4. Request-To-Send (RTS)

5. Clear-To-Send (CTS)

6. Data Set Ready (DSR)*

7. Data Carrier Detect (DCD)

8. Transmit Clock (TC) Synchronous Operation Only†

9. Receive Clock (RC) Synchronous Operation Only†

10. External Transmit Clock (ETC) Synchronous Operation Only†

11. Received Signal Strength (RSSI)

12. AC Alarm (AC Failure)




Two additional outputs are provided on TB1 for custom applications: AC power failure alarm, and the transceiver’s Received Signal Strength Indication (RSSI).

AC Alarm —Pin 12

H = AC Present—Approximately 11 Vdc through a 1 K resistorL = AC Failure—Ground through a 1 K resistor

Received Signal Strength Indicator (RSSI)—Pin 11

Same as transceiver’s RSSI output. It provides a DC voltage proportional to the received signal strength. The range is approximately zero to five volts DC through a 10K current limiting resistor. Refer to the transceiver manual for additional RSSI information.


Figure 11. Digital Interface/Utility Board, P/N 03-2472Axx

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2.7 Final MDS P-60 Installation Tasks

Perform the following steps to complete the installation of the MDS P-60 and prepare the unit for normal operating service:

1. Dress and secure all external cabling in conformance with applicable electrical codes.

2. Apply primary power to the unit and check for normal transceiver opera-tion. (Checks for the radio are described in the transceiver manual.)

3. If necessary, refine the antenna heading for maximum RSSI. Refer to the transceiver manual for additional RSSI information.

4. Close and latch the equipment cabinet. The cabinet latch may be pad-locked if desired.



3.0 MDS P-50 INSTALLATION

NOTE: The MDS P-50 is a discontinued product, and is pro vided in th ismanual for historical reference only.

3.1 Unpacking and Inspection

After opening the shipping container, check the contents against the packing list secured to the outside of the box. We recommend that all shipping materials be saved in case you need to ship the unit in the future.

The factory test data sheet is normally packed with the equipment. Check this sheet to ensure that the packaged radio system has been configured to meet your requirements. Specific items to check include: primary power voltage, transmit and receive frequencies, modem speed (if applicable), FM deviation, and transmitter RF power output. If there are discrepancies, contact GE MDS Customer Support at +1 (585) 242-9600 for assistance.

3.2 Installation Considerations

A short time spent planning the installation can help prevent performance problems later on. Select a location that provides a stable mounting surface, and also allows for convenient routing of the antenna, power and data cabling. All of these cables (but especially the antenna feedline) need to be kept as short as possible to minimize losses. Refer to the transceiver manual for further information on selecting feedlines.

Packaged systems are normally mounted in either a wall-mount or pole-mount configuration. If possible, install the unit in a location that can be easily reached while standing on the ground. This allows convenient access for test and servicing of the radio system.

If the unit must be installed in a location that is not easily accessible, it may be desirable to first operate the packaged system on a test bench to verify proper operation with customer-supplied equipment and to set any programmable parameters before final installation. However, installation tasks such as antenna aiming and SWR checks should be done with the unit in its permanent operating position.

NOTE: The use of stainless steel mounting hardware is recommended foroutdoor installations.

3.3 Mounting the Enclosure

There are two basic mounting arrangements for the MDS P-50—wall mount or pole mount. The steps below describe methods for mounting the unit in both of these standard configurations. When planning the installation, refer to Figure 12 on Page 27, which shows the mounting dimensions of the MDS P-50 packaged system.




Figure 12. MDS P-50 Mounting Dimensions

Wall Mounting Instructions

The steps below describe mounting of the MDS P-50 unit to a wall or other flat surface. Ordinary lag screws (with flat washers) can be used if the unit is to be mounted to a wooden surface. If it is to be mounted to a drywall, masonry or other non-wooden surface, suitable fasteners will be required that can support the weight of the unit.

To wall mount the unit, follow these instructions:

1. Hold the packaged unit up to the wall in the desired mounting position. Have an assistant mark the four mounting holes with a pencil or marker.

2. Prepare the mounting surface for the fasteners to be used. (If using lag screws, a small pilot hole at each mark will allow easier starting of the screw.)

3. Hold the packaged unit up to the wall again while an assistant installs the four mounting screws. Make sure the screws are tightened securely, but do not over-tighten.

Figure 13 on Page 28 shows a typical wall mount installation.




Figure 13. Typical Wall Mount Installation (MDS P-50)

Pole Mounting Instructions

Standard pole mounting requires the use of two pole-mount adapters (P/N 82-1743A01). These brackets must first be bolted to the MDS P-50 enclosure. The complete assembly can then be mounted to a wooden utility pole with two lag screws or with two long bolts that extend through the pole. (Threaded rod can also be used for through-the-pole mounting.) In either case, it is important to use flat washers with the attaching hardware (fasteners are not supplied).

To pole mount the unit, follow these instructions:

1. Attach the two pole mount adapter brackets to the MDS P-50 enclosure with suitable nut and bolt assemblies, as shown in Figure 14 on Page 29.

2. With the help of an assistant, position the MDS P-50 enclosure on the pole at the desired mounting point.

3. Install the attaching hardware (with flat washers) in the center hole of the two brackets.

4. Tighten the fasteners securely, but do not over-tighten.

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Figure 14 shows a typical pole-mount installation using lag screws.


Figure 14. Typical Pole-Mounted Installation (MDS P-50)

Other pole-mount configurations are available for the MDS P-50, including a mounting bracket with a sun shield (for use in excessively hot climates), a tower mounting bracket, and other arrangements to meet special needs. Con-tact GE MDS for more information.

Rack Mount Alternative

In addition to wall and pole mounting, the internal chassis of the packaged system can also be mounted in a standard 19 inch equipment rack for indoor installations. The rack-mounted model is normally shipped without an enclo-sure and is supplied with hardware for mounting the chassis plate to the rack cabinet. Figure 15 on Page 30 shows a typical rack mount installation, and Figure 16 on Page 31 details the mounting plate configuration.

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The electrical installation procedures given in this section apply fully to rack mounted units. The physical mounting instructions, however, will differ depending on the type of rack cabinet to be used. Contact GE MDS if addi-tional assistance is required.


Figure 15. Typical Rack Mount Installation (MDS P-50)

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3.4 MDS P-50 Cable Connections

This section describes the connection of external cabling to the MDS P-50 packaged system. Included are steps for connecting DC power, the station antenna, and the customer-supplied equipment. Figure 16 shows an overall view of the connection points for all external cabling. Subsequent illustrations will show more detailed views of wiring connections as required.


Figure 16. MDS P-50 Cable Connection Points

Primary Power—J3

The power input terminations for the MDS P-50 are provided on the Inter-face/Utility Board connector J3. Note that J3 is used for input power regardless of whether the unit has been configured for AC or DC operation. Primary power wiring should be routed via conduit to the rear hole on the bottom of the enclosure. This hole is fitted with a standard 1-1/4" (3.37 cm) conduit coupling.

CAUTION: The MDS P-50 is available for operation on a wide varietyof AC or DC supply volta ges. Be sure to check the label near J3 andmake sure that the supply voltage you are using matches that specifiedon the label before applying power. The use of an incorrect supply volt-age can permanently damage the radio, power supply, or both.

DC Input—J3

Connector J3 is used for primary power input on DC-powered models. Pin 1 is the positive (+) connection. Pin 3 is the negative (–) connection.

The system can be configured for negative or positive chassis ground by con-necting either the negative or positive supply lead to J3 Pin 2 (chassis ground terminal). As an alternative, the DC supply leads can be left “floating” by making no connection to J3 Pin 2.

AC Input—J3

Connector J3 is used for primary power input on AC-powered models. J3 Pins 1 and 3 are the AC line inputs. The AC Ground must be connected to J3 Pin 2 (chassis ground terminal).



AC power supplies are most commonly wired for 120 Vac, but can readily be rewired for 230 Vac if desired. There is a chart on the side of the power supply; unmount the power supply to view it.

Accessory DC Power Out—J8

Accessory Power connector J8 on the Interface/Utility Board can be used to provide up to 2 amperes at 13 Vdc negative ground for accessories. Fuse F2 provides over-current protection for this power.

Pin 1 of J8 is connected to the +13 volt DC supply. Pin 2 is at DC ground.

Backup Battery—Important information

Packaged systems supplied wired for AC operation have a backup battery system installed as standard equipment. The battery is disconnected for ship-ping by unplugging its cable from the Interface/Utility Board. This prevents accidental discharge of the battery and radio operation while the unit is in ship-ment or storage. Plug the battery cable into J4 to enable the backup power option.

Antenna Connection

A type-N coaxial connector on the lower right side of the transceiver chassis serves as the antenna connection to the packaged system. Route the antenna coax through the front hole (a weathertight bushing) on the bottom of the enclosure and attach it to the transceiver connector. This bushing is also com-monly used to pass the RTU interface cabling through to the Interface/Utility Board. Do not tighten it until all cabling has been installed.

Refer to the transceiver manual for additional information on selecting and installing antennas and feedlines.

NOTE: The following subs ection describes audio and keyline connectionsto an MDS P-50 Analog Interface/Utility Board (P/N 03-1105A21).Instructions for the Digital Interface/Utility Board are given in thenext major subsection.

3.5 Analog Interface/Utility Board Connections (P/N 03-1105A21)

The Analog Interface/Utility Board serves as the connection point for all audio and keyline connections to the MDS P-50. Route the cabling to the Inter-face/Utility Board through the weathertight bushing on the bottom of the enclosure (also used for the antenna coaxial cable). Tighten the bushing after installing the interface cable.



Connector J1 on the Analog Interface Utility Board is used for all audio and keyline terminations. Refer to Table 5 for a summary of J1 pin connections. Figure 17 shows a detailed view of the Analog Interface/Utility Board.

Figure 17. Analog Interface/Utility Board Connections—MDS P-50

Table 5. J1 Pin Connections (Analog Interface/Utility Board)

J1 PINS

CONNECTION REMARKS

1 & 2 Transmit Audio 600 , balanced

3 No Connection

4 & 5 Receive Audio 600 , balanced

6 No Connection

7 & 8 Keyline connection for positive or negative keying

This arrangement allows the radio to be keyed by a variety of different methods that will accommodate most systems. See “Keyline Options” on Page 34.

8 & 11 Keyline connection when an internal current source is used. (Requires a jumper between Pins 7 and 10.)

This method uses the on-board 12 volt DC supply. See “Keyline Options” on Page 34.

9 AC Failure Alarm Normally 11 Vdc; drops to zero volts if an AC failure occurs.

10 +13 Vdc Accessory power (2 Amp maximum) jumpered to Pin 7 for keying with an internal current source. See description for Pins 8 & 11 above.

11 PCB ground connection Connects to ground on the Interface/Utility Board.

12 Received Signal Strength Indication (RSSI) Approximately 0 to 5 Vdc through a 10K resistor.



Keyline Options

Several methods may be used to key the transceiver, depending on the facilities available at the installation site and the design of the customer-supplied data equipment. (See Figure 18 on Page 35.) This section discusses three common keying methods. Contact the factory if additional assistance is required.

Positive or Negative Keying

One keyline option is to use a keyed 12 to 25 volt source or a fixed voltage source and series relay. The relay contacts can be included in either the positive or negative supply lead (see Figure 18 on Page 35, examples 1 and 2). The use of an opto-isolator allows both keying supply leads to “float” above or below ground. J1 Pin 7 must be positive with respect to J1 Pin 8. For keying supply voltages higher than 25 volts, add a resistor in series with the connection to J1 Pin 7 (or Pin 8) to limit the keying current to 10 to 20 mA.

Internal Current Source Keying

Another keyline option is to use the on-board 12 volt DC supply. This is done by adding a jumper from J1 Pin 7 to Pin 10. J1 Pins 8 and 11 are then connected to the keyline relay contacts (see Figure 18 on Page 35, example 3).

Manual Keying Button (for test purposes)

A red pushbutton, SW1, is provided on the Interface/Utility Board to key the transmitter manually when desired. This is useful during initial setup and testing of the packaged system.


Two additional outputs are provided on J1 for custom applications: AC power failure alarm, and the transceiver’s Received Signal Strength Indication (RSSI).

AC FAIL—Pin 9


RSSI—Pin 12

Same as transceiver’s RSSI output. Provides a DC voltage pro-portional to the received signal strength. Range is approximately zero to five volts DC through a 10K current limiting resistor. Refer to the transceiver manual for additional RSSI information.



Figure 18. Keying Options—Analog Interface/Utility Board, P/N 03-1105A21



3.6 Digital Interface/Utility Board Connections(P/N 03-1467A21)

The Digital Interface/Utility Board serves as the connection point for all data interface cabling to the MDS P-50. Route the cabling to the Interface/Utility Board through the weathertight bushing on the bottom of the enclosure (also used for the antenna coaxial cable). Tighten the bushing after installing the interface cable.

Connector J1 on the Digital Interface/Utility Board is used for all data cabling terminations. Refer to Table 6 for a summary of the required pin connections. Figure 19 on Page 37 shows a detailed view of the Digital Interface/Utility Board.

*DSR wired to +8 V in the transceiver.†Not applicable for x710 or x810 radios, which are asynchronous

NOTES

1. The radio is configured as DCE (Data Communications Equipment) as opposed to DTE (Data Terminal Equipment).

2. These lines are inputs: ETC, TXD and RTS.3. These lines are outputs: TC, RC, RXD, CTS, DSR and DCD.4. For asynchronous operation, make no connection to Pins 8, 9 or 10.

Table 6. Interface/Utility Board J1 Connections

Pin Number & Description Pin Number & Description

1. Signal & Protective Ground 7. Data Carrier Detect (DCD)

2. Transmit Data In (TXD) 8. Transmit Clock (TC)Synchronous Operation Only†

3. Received Data Out (RXD) 9. Receive Clock (RC)Synchronous Operation Only†

4. Request-To-Send (RTS) 10. External Transmit Clock (ETC)Synchronous Operation Only†

5. Clear-To-Send (CTS) 11. Received Signal Strength (RSSI)

6. Data Set Ready (DSR)* 12. AC Failure (Alarm)




Figure 19. Digital Interface/Utility Board Connections—MDS P-50


Two additional outputs are provided on J1 for custom applications: AC power failure alarm, and the transceiver’s Received Signal Strength Indication (RSSI).

AC FAIL—Pin 12


SGN-STRENGTH (RSSI)—Pin 11

Same as transceiver’s RSSI output. Provides a DC voltage pro-portional to the received signal strength. Range is approximately zero to five volts DC through a 10K resistor. Refer to the trans-ceiver manual for additional RSSI information.

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3.7 Final MDS P-50 Installation Tasks

Perform the following steps to complete the installation of the MDS P-50 and prepare the unit for normal operating service:

1. Dress and secure all external cabling in conformance with applicable electrical codes.

2. Apply primary power to the unit and check for normal transceiver opera-tion. (Checks for the radio are described in the transceiver manual.)

3. Close and latch the equipment cabinet. The cabinet latches may be pad-locked if desired.

4. If necessary, refine the antenna heading for maximum RSSI. (Refer to the transceiver manual for additional RSSI information.)



4.0 P-60/P-50 OPERATION

4.1 Introduction

The packaged systems are designed for unattended field operation. The only normal operator interaction is to apply power at the time of installation and observe the unit for proper LED indications. This chapter discusses the steps for initial power-up and also describes the connection of accessory equipment to the packaged system. These instructions assume that the unit has been installed in accordance with the installation procedures given earlier in this manual.

4.2 Initial Power-Up

As soon as primary power is applied to the packaged system, the unit is ready for operation. Follow these steps to begin operation:

1. Apply primary power to the packaged system.

2. Observe for normal operation. Typically, the radio will be transmitting intermittently in response to polling signals from the master station. The transceiver instruction manual describes other installation checks that can be made to the radio and antenna system.

Battery Backup Operation—for AC-powered units

In AC-powered units, a 12 volt battery is provided as standard equipment. The battery provides at least four hours of continued operation in the event of a pri-mary power failure. (Depending on the transmit duty cycle and how often the radio is polled, the battery may last much longer.) The battery is float charged by the power supply during normal operation.

During battery backup operation, an AC FAIL LED illuminates on the Inter-face/Utility Board. (On DC-powered units, this LED will be lit continuously under normal conditions.) A test procedure for the backup battery is given in Backup Battery Testing on page 48.

NOTE: Packaged systems supplied wired for AC operation have a backupbattery system installed as stan dard eq uipment. The ba ttery isdisconnected for shipping by un plugging its cable from the Inter-face/Utility Board. This prevents accidental discharge of the batteryand radio operation while the unit is in shipment or storage. Plug thebattery cable into J4 to enable the backup power option.

Low Voltage Disconnect Assembly

A Low Voltage Disconnect Assembly (P/N 03-3077A01) is included in many recently manufactured packaged radio systems. This section explains the oper-ation of the assembly and provides schematic and component location infor-mation.

A field upgrade kit (P/N 03-3077A11) is also available to add the Low Voltage Disconnect Assembly to older packaged radio units. Contact GE MDS for additional information.



Functional Description

The Low Voltage Disconnect assembly is a small PC board mounted on the chassis plate of GE MDS packaged model radio systems. It prevents battery damage that may be caused by allowing a backup battery to drop below 10.2 volts while powering a transceiver, such as might occur during a lengthy power outage. Component locations are shown in Figure 20, and Figure 21 provides a schematic diagram.

When the battery voltage drops to 10.2 Volts (± 0.2V), the Low Voltage Dis-connect Assembly automatically disconnects the battery from the transceiver. This, of course, stops operation of the radio, but protects the battery from potential damage. When AC power returns, the battery is automatically con-nected to the power supply (for charging) and normal radio operation resumes immediately.


Figure 20. Low Voltage Disconnect Assembly, P/N 03-3077A01Component Locations




Figure 21. Low Voltage Disconnect Assembly, P/N 03-3077A01Schematic Diagram

Use of the Battery Reset Switch (SW1)

Normally, the operation of the Low Voltage Disconnect Assembly is fully automatic. The only exception is when replacing a discharged battery with a charged unit before AC power has returned. In this case, it is necessary to press the BAT. RESET switch on the assembly after installing the new battery. (See Figure 22.) Use a pen or other pointed object to press the switch. This allows the replacement battery to immediately supply power to the transceiver.


Figure 22. Low Voltage Disconnect Assembly

NOTE: For proper opera tion of the Low V oltage Disconnect assembly,14.10 Vdc (±0.1 V) must be present at the battery connector on theInterface/Utility Board (with the battery disconnected). This is thestandard factory setting.

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To test for proper backup battery operation, proceed as follows:

1. Apply AC power to the packaged system and operate the radio in the normal manner.

2. When the battery has charged, disconnect the AC power and verify that the system continues to operate on battery power.

3. Re-apply AC power. This completes the checkout procedure.

4.3 Interface/Utility Board Features and Indicators

Most user interaction with the packaged system takes place at the Inter-face/Utility Board located in the lower left hand side of the enclosure. Depending on the model of the unit, a variety of features are available on this board that will assist you in monitoring and controlling the operation of the system. Table 7 on page 42 contains a summary of the available features and indicators on each packaged model.


Table 7. Interface/Utility Board Features & Indicators

ModelConfiguration

Order Wire Jack1

HHT Jack LED Indicator(s)

Test Switch1 Adjustments2

MDS P-60 w/Analog Interface/Utility Board

J1 (Modular)

J3 (Modular) CR6—AC power failure indicator. (On with battery operation.)

CR10—Transmitter keyed

SW1—Red button. Used to manually key the transceiver.

R9—TX audio level

R10—RX audio level

R28—Order wire deviation



Connecting an Order Wire Handset

NOTE: Order wire (voice) operation over data frequencies is not permittedin all countries. Check the regula tions before connecting an OrderWire handset to your system.

The radio equipment installed in the packaged system is normally used for data (non-voice) transmission. Occasionally, however, it may be desirable to estab-lish a temporary voice link to personnel at the master station to coordinate installation or maintenance activities. This is accomplished with an “Order Wire” connection.

Many packaged system Interface/Utility Boards have a modular tele-phone-style jack that will accept an Order Wire handset (see Figure 23). Table 7 on page 42 shows the appropriate jack number to use for each pack-aged system model. Although many standard telephone handsets can be used for Order Wire service, GE MDS offers a unit specifically intended for use with its transceivers (P/N 12-1307A01). The Order Wire facility is not avail-able on units equipped with an MDS 9000 Series Transceiver.

To use the Order Wire feature:

1. Plug the Order Wire handset into the modular jack on the Interface/Utility Board. (See Table 7 on page 42 for the appropriate jack number.)

2. Key the transmitter by speaking into the handset (VOX).

MDS P-60 w/Digital Interface/Utility Board

J1 (Modular)

J3 (Modular) orDB-25 connector

(SW2 used to switch these jacks in or out of the circuit)

CR15—AC power failure indicator. (On with battery operation.)

CR12—Transmitter keyed


R13—Order wire handset1

MDS P-50 w/Analog Interface/Utility Board

J11 (Modular)

N/A(HHT must be connected directly to transceiver)

CR8—AC power failure indicator. (DC power indicator with battery operation.)


R2—RX audio levelR19—TX audio level

MDS P-50 w/Digital Interface/Utility Board

J9 (Modular)

N/A(HHT must be connected directly to transceiver)

CR5—AC power failure indicator. (On with battery operation.)

CR4 Transmitter keyed indicator


R19—Order wire deviation1

1. These features are not available on units equipped with an MDS 9000 Series Transceiver.2. Control adjustment procedures are given in Chapter 5—Servicing Data.

Table 7. Interface/Utility Board Features & Indicators (Continued)



NOTE: Unintentional sound picked up by the Order Wire handset may keythe transmitter and interrupt the normal data flow through the trans-ceiver. To prevent erratic operation of the system, remove the OrderWire handset when the Order Wire is not in use.


Figure 23. Order Wire Handset Connected to Packaged System(MDS P-60 shown; MDS P-50 similar)

Connecting a Hand-Held Terminal

A significant feature of GE MDS transceivers is the ability to accomplish many radio programming and diagnostic tasks through software commands issued from a Hand-Held Terminal (HHT). (See Figure 24 on Page 45.)

HHT control of the transceiver allows you to make several key measurements and adjustments without the need for removing the transceiver cover, or having to reconfigure internal switches or jumpers. The transceiver manual contains a list of HHT commands for the specific radio installed in your system.

NOTE: When an HHT is connected, th e normal data communicationsbetween t he Interface/Utility Board and the transceiver will bedisrupted. Disconnect the HHT to restore normal operation. Addi-tionally, with MDS P-60 Digital Interface/Utility Boards, SW2 mustbe returned to the OUT position when the HHT is disconnected.

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Figure 24. MDS Hand-Held Terminal(Kit P/N 03-1501A01)

HHT Connection to an MDS P-60

On MDS P-60 models, an HHT can be plugged directly into the Inter-face/Utility Board (except for MDS x710 models, which require a diagnostics connection directly at the modular jack on the transceiver). Follow these steps to connect the terminal:

1. Plug the HHT cord into the matching jack on the Interface/Utility Board. The HHT cord is usually fitted with a plug-in adapter to allow use with either an RJ-11 modular jack or a DB-25 connector.

• On Analog Interface/Utility Boards (03-2110Axx), use J3 (the modular jack).

• On Digital Interface/Utility Boards (03-2472Axx), use J3 or J8 (the DB-25 connector). After plugging in the HHT, set SW2 to the IN posi-tion.

2. The HHT starts a self-check routine. When the test is finished, the HHT is ready to accept commands. Refer to the transceiver manual for radio-spe-cific commands.

On digital models, be sure to return SW2 to the OUT position when finished testing.

HHT Connection to an MDS P-50

On MDS P-50 models, an HHT must be plugged directly into the transceiver’s INTERFACE DB-25 connector. Follow these steps to connect the terminal:

NOTE: For MDS x710 radios, GE MDS recommends that you plug the HHTdirectly into the transceiver’s Diagnostics jack rather than the Inter-face/Utility Board.

1. Unplug the transceiver’s interface cable (a ribbon cable leading from the transceiver to J2 on the Interface/Utility Board).

2. Plug the HHT’s coiled cord into the transceiver’s INTERFACE connector.

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3. The HHT starts a self-check routine. When the test is finished, the HHT is ready to accept commands. Refer to the transceiver manual for radio-spe-cific commands.

When testing is finished, be sure to re-install the interface cable.

Special Note for MDS 9360 Users

The DB-25 connector on the Digital Interface/Utility Board (J8) permits direct connection of an HHT or PC for diagnostic testing or link evaluation of an MDS 9300 Series spread spectrum transceiver. A standard RS-232/EIA-232 cable may be used for connection to a PC.



5.0 SERVICING DATA

5.1 Introduction

This chapter contains information for keeping the packaged system in peak operating condition, as well as procedures for performing minor field adjust-ments and troubleshooting. This service information is intended to augment the transceiver manual shipped with your system.

5.2 Preventive Maintenance

The packaged systems are designed for long life and trouble-free operation. However, because these units are frequently installed in outdoor environments, periodic inspection of the equipment is more important than it would be for equipment mounted indoors.

The unit should be checked occasionally for loose or corroded hardware, loose cable connections, and damage to the exterior housing. The door seals and cable entrances should also be checked for signs of leakage or other damage. When performing preventive maintenance, it is also a good idea to check related equipment, such as the antenna system and remote terminal unit, for signs of damage or loose connections. Consult the applicable instruction manual(s) for maintenance recommendations.

The transceiver instruction manual contains many transceiver maintenance checks that can be made with an HHT. Specific items to check include RF power output, received signal strength (RSSI), supply voltage and current draw.

5.3 Fuse Replacement

The packaged systems are equipped with several fuses to guard against over-current conditions. When a fuse blows, you should try to find the cause of the problem before replacing the fuse. A blown fuse could be caused by a short circuit, power surge or nearby lightning discharge.

Table 8 on page 48 contains a list of all fuses used in the packaged radio sys-tems. In the MDS P-60, all fuses are located on the Interface/Utility Board. In the MDS P-50, there are two fuses installed on the Interface/Utility Board and one fuse installed in the battery cabling (inline fuse). Additionally, there is a fuse inside all transceivers. (Refer to the applicable transceiver manual for replacement instructions.)



For continued protection, replacement fuses must be of the same size and rating. Be sure to disconnect primary power from the station before removing or replacing a fuse.

5.4 Backup Battery

Backup Battery Testing

If the unit is equipped with a backup battery, the system should be tested occa-sionally for proper backup operation. To do this, temporarily shut off the AC power to the station and check for continued radio operation. (If possible, the system should be tested for 30 minutes or more on backup power.) If a battery is found to be defective, refer to Backup Battery Replacement below for replacement instructions. Steps are also given later in this chapter for checking and adjusting the battery charging rate.

Table 8. Equipment Fuses

Equipment Model Ref Desig. Function Type

MDS P-60 F1, F2 Primary Power Refer to Table 9

F3 Transceiver Power 3AG, Fast, 250V, 3A

F4 Battery 3AG, Fast, 250V, 3A

F5 Accessory (Analog boards only)

1A/3AG

MDS P-50 F1, F2 Primary Power 2A/3AG

— Battery Fuse (Inline)

5A/5AG

Table 9. F1/F2 Fuses for P-60 Models

Power Supply Installed F1/F2 Fuse Rating

12 Vdc (w/o converter) 3AG, Fast, 250V, 3A

12 Vdc (w/ converter) 3AB, Normal, 250V, 10A

24 Vdc (w/ converter) 3AG, Fast, 250V, 4A



115 Vac 3AG, Slow, 250V, 1.5A

230 Vac 3AG, Fast, 250V, 1A

Other voltages Consult Factory



Backup Battery Replacement

Backup batteries have a limited service life. The length of time a battery lasts depends on many factors, including the charging rate, number of discharge cycles and the ambient temperature at the installation site. If a backup battery is found to be defective, follow these steps to replace it:

1. Turn off the primary power to the station.

2. Unplug the battery cable from J4 on the Interface/Utility Board.

3. Remove the battery bracket screws and the battery pack. Properly discard the defective battery.

4. Install the new battery pack and re-install the battery bracket.

5. Connect the cable assembly between the battery and J4 on the Inter-face/Utility Board.

6. Re-apply primary power to the station.

Charging Adjustment

Refer to Battery Charging Check—AC-Powered Units Only on page 65. (Sep-arate procedures are given for MDS P-50 and MDS P-60 Packaged systems.)



5.5 System Troubleshooting

If difficulties are experienced with the packaged system, Table 10 can be used to help isolate the faulty element. See also the troubleshooting instructions given in the associated transceiver manual.

If troubles persist, technical assistance is available from GE MDS’ Customer Support by calling +1 (585) 242-9600. Please have the complete model number code of the packaged system ready when calling for assistance. Refer to the inside back cover of this manual for more information.

Table 10. Packaged System Troubleshooting Chart

Symptom Corrective Action

Unit does not operate a) Check for primary power

b) Check for blown fuses

c) Check for secure cabling connections

Unit does not operate on backup battery, or runs only a short time

a) Check to see that battery is being charged properly (see Battery Charging Check—AC-Powered Units Only on page 65).

b) Battery may be defective. If so, replace it with a functioning unit. (see Battery Charging Check—AC-Powered Units Only on page 65).

Transmitter does not key a) Manually key the transmitter with SW1 on the Interface/Utility Board

b) Check cabling to external data equipment (RTU)

c) Check for secure cabling connections

System transmits and receives, but overall performance is poor

a) Check antenna system for damage or antenna misalignment

b) Check for secure cabling connections

c) Check for proper supply voltage

d) Check transceiver for proper RF output

e) Check transceiver for proper frequency programming



5.6 List of Replaceable Assemblies

Table 11 and Table 12 on page 52 show a list of replaceable parts for the MDS P-60 and MDS P-50, respectively. The parts used in a given system depend on the configuration of the packaged system. Therefore, not all of the parts listed will be used in every model. Please have the complete model number code for your packaged system ready when ordering parts.

Table 11. MDS P-60 Replacement Parts

Part Name Description GE MDS Part Number

Transceiver Standard GE MDS remote transceiver

MDS 2300, 4300 or 9300 SeriesMDS 4710, 9710, or 9810 Series

Power Supply Assemblies(AC and DC)

Converts primary power to level required by the radio system

120 VAC: 03-2168A0112 VDC: 03-1212A0524 VDC: 03-1212A0248 VDC: 03-1212A03125 VDC: 03-1212A04

Interface/Utility Board Provides system control and interfacing. Connection point for external accessories.

Analog: 03-2110A01(2300/4300 Series)

Digital: 03-2472A01(2300/4300 Series)03-2472A02(9300 Series)03-2472A03(9800 Series)

Backup Battery Assembly 12V/4.6 Ah(Not used in DC powered models)

03-1575A02

Transceiver Interface Cable Connects the transceiver data connector to the Interface/Utility Board

03-2160A01

Transceiver DC Power Cable

Connects the transceiver and Interface/Utility Board power connectors

03-1846A05 (2300, 4300, 9800 Series)

03-2250A02 (9300 Series)

External Interface Connector

Connection point for cabling to RTU

73-1194A19

Primary Power Connector Connection point for primary power wiring

73-1194A18

Fiberglass Enclosure NEMA 4, weather resistant

98-2830EN





5.7 Packaged System Adjustments—MDS P-60

Transmit/Receive Audio Level (Analog Interface/Utility Board, P/N 03-2110A01)

The Analog Interface/Utility Board has two audio level controls—one to set the transceiver modulation input level from the associated external equipment, and a second level control to set the output audio level fed to the external equipment. The setting of these controls assumes the associated transceiver has been properly tested and adjusted prior to installation. The audio input and output levels are preset at the factory before shipment.

Table 12. MDS P-50 Replacement Parts

Part Name Description GE MDS Part Number

Transceiver Standard GE MDS remote transceiver

MDS 2300, 4300 or 9300 Series MDS 4710, 9710, or 9810

Power Supply Assemblies(AC and DC)

Converts primary power to level required by the radio system

120 VAC: 03-1143A0212 VDC: 03-1212A0524 VDC: 03-1212A0248 VDC: 03-1212A03125 VDC: 03-1212A04

Interface/Utility Board Provides system control and interfacing. Connection point for external accessories

Analog: 03-1105A21(2300/4300 Series)

Digital: 03-1467A21(2300/4300 Series)03-1467A22(9800 Series)

Backup Battery Assembly 12V/5 Ah (Not used in DC units)

03-1142A02

Transceiver Interface Cable Connects the transceiver data connector to the Interface/Utility Board

03-1465A01

Transceiver DC Power Cable

Connects the transceiver and Interface/Utility Board power connector

03-1846A03 (2300, 4300,9800 Series)

03-2250A02 (9300 Series)

External Interface Connector

Connection point for cabling to RTU

73-1194A10

Primary Power Connector Connection point for primary power wiring

73-1194A06

Fiberglass Enclosure NEMA 4, weather resistant

98-1926EN



Transmit Audio Level, R9

While monitoring the transmitted signal on a communications service monitor, adjust the Transmit Audio Level control (TX AUDIO), R9, to achieve the desired deviation level—2.5 kHz for 12.5 kHz channel operation, and 3.0 kHz for 25 kHz channel operation. The TX TEST switch, SW1, on the Inter-face/Utility Board, can be used to manually key the transmitter during this adjustment. The audio present on Pins 1 and 2 of TB1 is used to modulate the transmitter. The level must be within the range of –20 dBm to +10 dBm.

Receive Audio Level, R10

The Receive Audio Level control (RX AUDIO), R10, is used to set the out-going signal level to Pins 4 and 5 of J1. With an actual or simulated signal being received by the transceiver, adjust R10 to achieve the desired line level signal to the associated remote equipment. The maximum output level is + 6 dBm at 600. Consult the RTU manual for specific recommendations.

Order Wire Levels (Analog Interface/Utility Board, P/N 03-2110A01)

The MDS P-60 Analog Interface/Utility Board has an Order Wire Level con-trol, R28, used to set the transmit modulation level (deviation) of the audio from the local Order Wire handset’s microphone. The Order Wire handset is plugged into J1 on the Interface/Utility Board.

While monitoring the transmitted signal on a communications service monitor, adjust the Order Wire Level control, R28, to achieve the desired deviation level—2.5 kHz for 12.5 kHz channel operation, and 3.0 kHz for 25 kHz channel operation. The radio is keyed automatically by speaking into the Order Wire handset.

Order Wire Levels (Digital Interface/Utility Board, P/N 03-2472A01)

The MDS P-60 Digital Interface/Utility Board has an Order Wire Level con-trol, R13, used to set the transmit modulation level (deviation) of the audio from the local Order Wire handset’s microphone. The Order Wire handset is plugged into J1 on the Interface/Utility Board.

While monitoring the transmitted signal on a communications service monitor, adjust the Order Wire Level control, R13, to achieve the desired deviation level—2.5 kHz for 12.5 kHz channel operation, and 3.0 kHz for 25 kHz channel operation. The radio is keyed automatically by speaking into the Order Wire handset (VOX).

NOTE: Unintentional sound picked up by the Order Wire handset may keythe transmitter and interrupt the normal data flow through the trans-ceiver. To prevent erratic operation of the system, remove the OrderWire handset from the packaged systems when the Order Wire is notin use.



Battery Charging Check—AC-Powered Units Only

For proper charging of the battery, the power supply must be set at the correct output voltage. As standard procedure, the factory checks and adjusts the charging voltage before shipment. To check for proper charger output, use the following procedure:

1. Disconnect the battery by removing the plug from J4 on the Interface/Utility Board.

2. Connect a 1.5 k resistor (1/4 watt or larger) between Pins 2 & 3 of J4. These are the two pins closest to the squared end of the jack’s shell. The resistor is used to simulated the load of a discharged battery.

3. Measure the voltage present at the battery fuse, F4, referenced to power supply negative. This voltage should be 14.10 Vdc; if not, the power supply voltage should be adjusted to produce 14.10 Vdc. The power supply output voltage can be adjusted with voltage adjustment pot R11 within the power supply unit (accessible through the hole on the side of its chassis plate).

4. Remove the 1.5 k resistor from J4 and re-install the mating battery con-nector into J4.



5.8 Service Drawings and Reference Data—MDS P-60

This section contains assembly drawings and wiring diagrams for the MDS P-60 packaged system. Additionally, schematic diagrams are included for the Analog and Digital Interface/Utility Boards.


Figure 25. MDS P-60 Interior (AC Version)NEMA enclosure not shown



Invisible place holder.

Figure 26. Exploded View of MDS P-60 (AC Version)NEMA enclosure not shown




Figure 27. Exploded View of MDS P-60 (DC Version)Analog interface/utility board shown;

NEMA enclosure not shown




Figure 28. MDS P-60 Packaged System Interconnection DiagramWith 03-2110A01 Analog Interface/Utility Board Installed

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Figure 31. Interface Wiring for iNET Transceivers (using COM2 port)




Figure 32. Interface Wiring for TransNET Transceivers (or iNET using COM1 port)




Figure 33. Digital Interface/Utility Board, P/N 03-2472A03Component Locations

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NOTE: Some early packaged models we re equipped with an 03-2115AxxDigital Interface/Utility Board. The primary difference in this earlierboard is that it does not have a DB-25 connector for terminal connec-tion. (Modular jack J3 is used for terminal connection on these earlymodels.) In all other respects, it is very similar to the 03-2472AxxPCB.

5.9 Packaged System Adjustments—MDS P-50

Transmit/Receive Audio Level (Analog Interface/Utility Board, P/N 03-1105A21)

The Analog Interface/Utility Board has two audio level controls—one to set the Transceiver input modulation level from the associated external equip-ment, and a second to set the output audio level fed to the external equipment. The setting of these controls assumes the associated transceiver has been prop-erly tested and adjusted prior to installation.

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Transmit Audio Level, R19

While monitoring the transmitted signal on a communications service monitor, adjust the Transmit Audio Level control, R19, to achieve the desired deviation level of 2.5 kHz for 12.5 kHz channel operation, or 3.0 kHz for 25 kHz channel operation. The TX TEST switch, SW1, on the Interface/Utility Board can be used to manually key the transmitter during this adjustment. The audio present on Pins 1 and 2 of J1 is used to modulate the transmitter. The level must be within the range of –20 dBm to +10 dBm.

Receive Audio Level, R2

The Receive Audio Level control, R2, is used to set the outgoing signal level to Pins 4 and 5 of J1. With an actual or simulated signal being received by the transceiver, adjust R2 to achieve the desired line level signal to the associated remote equipment. The outgoing level depends on the desired signal level at the remote terminal unit. The maximum output level is + 6 dBm at 600. Con-sult the RTU manual for specific recommendations.

5.10 Order Wire Levels (Analog Interface/Utility Board P/N 03-1105A21)

On an MDS P-50 Analog Interface/Utility Board, the Order Wire level is fac-tory set with fixed resistors. There are no Order Wire level adjustments on this board.

Order Wire Levels (Digital Interface/Utility Board 03-1467A21)

The Interface/Utility Board has an Order Wire Deviation control, R19, used to set the transmit modulation level of the audio from the local Order Wire handset’s microphone. The Order Wire handset is plugged into J9 on the Inter-face/Utility Board.

While monitoring the transmitted signal on a communications service monitor, adjust the Order Wire Level control, R19, to achieve the desired deviation level—2.5 kHz for 12.5 kHz channel operation, and 3.0 kHz for 25 kHz channel operation. The radio is automatically keyed by speaking into the Order Wire handset (VOX).

NOTE: Unintentional sound picked up by the Order Wire handset may keythe transmitter and interrupt the normal data flow through the trans-ceiver. To prevent erratic operation of the system, remove the OrderWire handset when the Order Wire is not in use.

Battery Charging Check—AC-Powered Units Only

For proper charging of the battery, the power supply must be set at the correct output voltage. To check for the correct charger output, perform the following procedure:

1. Disconnect the battery by removing the plug from J4 on the Interface/Utility Board.

2. Connect a 1.5 k (1/4 watt or larger) resistor between Pins 2 & 3 of J4. This simulates the load of a discharged battery.



3. Measure the voltage present at the cathode of the large diode (CR9 on Analog boards, CR1 on Digital boards), referenced to power supply nega-tive. This voltage should be 14.10 Vdc; if not, the power supply voltage should be adjusted to produce 14.10 Vdc at the cathode (banded end) of the diode. The power supply output voltage can be adjusted with voltage adjustment pot R11 within the AC power supply unit (accessible through the hole on the side of its cover).

4. Remove the 1.5 k resistor from J4 and re-install the mating battery con-nector into J4.

5.11 Service Drawings and Reference Data—MDS P-50

This section contains assembly drawings and wiring diagrams for the MDS P-50 packaged system. Additionally, schematic diagrams are included for the Analog and Digital Interface/Utility Boards.


Figure 35. MDS P-50 Interior View




Figure 36. MDS P-50 Packaged System Interconnection Diagramwith 03-1105A21 Analog Interface/Utility Board Installed

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Figure 37. MDS P-50 Analog Interface/Utility Board, P/N 03-1105A21Component Locations




Figure 38. MDS P-50 Packaged System Interconnection Diagramwith 03-1467A21 Digital Interface/Utility Board Installed

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J 1 (DB -25)

INT E R F A C E

J 5J 6 +13 V R E D +

G ND B LAC K –

4A/4AG /F B

J 7

AC

(D

C+)

DC

–D

C +

AC

(D

C–)

4 6 2 1

03-1143A02—120 V AC03-1324A01—12 V DC03-1324A02—24 V DC03-1324A03—48 V DC03-1324A04—125 V DC

P OWE R S UP P L YA S S E MB L Y

OUTIN

R C 9E T C 10

R S S I 11AC F AILUR E 12

AC HI

AC LOJ 3G ND

123

P R IMA R YP OWE R

INTE R F A C E

DC +

DC –

20222326

R XDTCG ND

R T S 43

151

2451112161819

R S S IDC D

C T SDS R

E T C

R C

22421

865

T X D

P OW E RC ONNE C T ORJ 2

03-1467A21—R S -232/TT LINTE R F A C E B OA R D




Figure 39. MDS P-50 Digital Interface/Utility Board, P/N 03-1467A21Component Locations

J7

J4

1

1

J8

1

F2

J2

1

J1

1

J6

J5

+

–

F1

MOV1 MOV2

J3

1

3

4 6

C9+R9R10

C8

C6

+

+ SW1

R19

U2U3

R22

R7R8R20

CR2R15

R21CR5

R18

R6R13

C4R16R14

C11+

U1

CR3

J10+ C5

J9

R12R4R11

R1R2R3

C1C2

R17

C3

R5

CR1

PRIMARYPOWERINPUT

(AC or DC asindicated on

chassis label.)

+ –

13 VDC

ACCESSORYDC POWER OUT

+–

BATTERYBACK-UP

AC POWER FAILUREINDICATOR

(On with battery operation.)

ORDERWIREDEVIATION

ORDERWIREHANDSET

INTERFACECONNECTION

25 26

2

ACCESSORYEQUIP. FUSE

(2 Amps DC Max )

PRIMARY POWERINPUT FUSE

TRANSCEIVERINTERFACE(TO DB-25)

TO AC POWERSUPPLY

TRANSMITTERKEYEDINDICATOR

CHASSISGROUND

TRANSCEIVERDC POWER

+–

AC FAIL

TX

TX

TRANSMITTEST KEY

2 3 4 5 6 7 8 9 10 11 12

1 2 3 4 5 6 7 8 9 10

NOT USED

CR4

SGN-STRENGTH

CR

17

CR

18

CR

19

CR

20

CR

21

CR

22

CR

23

CR

24

CR

6

CR

8

CR

10

CR

12

CR

14

CR

16

CR

7

CR

9

CR

11

CR

13

CR

15

GNDTXD

RXDRTS

CTSDSR

DCDTC RC

ETC

AC FAIL



Figure 40MDS P-60 Analog Interface Utility Board, P/N 03-2110Axx

Schematic Diagram



Figure 41MDS P-60 Digital Interface/Utility Board, P/N 03-2472Axx

Schematic Diagram



Figure 42MDS P-50 Analog Interface/Utility Board, P/N 03-1105A21

Schematic Diagram



Figure 43MDS P-50 Digital Interface/Utility Board, P/N 03-1467A21

Schematic Diagram


MDS 05-2818A01, Rev. C MDS P-60/P-60 HL Reference Guide I-1

INDEX

AAccessories 11Adjusting

audio level, transmit/receive (P-50) 64audio level, transmit/receive (P-60) 52order wire levels (P-50) 65order wire levels (P-60) 53

Analog interface/utility boardcomponent locations, P-50 (illustrated) 68component locations, P-60 (illustrated) 59connections, P-50 32keying options, P-50 (illustrated) 35keying options, P-60 (illustrated) 22

analog interface/utility boardconnections, illustrated 33

Assembly, low-voltage disconnect 39Audio & keyline connections (analog interface/utility board),

P-60 19Audio level, adjusting

P-50 64P-60 52

BBattery

backup operation 39backup, charging adjustment 49backup, replacement 49backup, testing 48charging check, P-50 65charging check, P-60 54low-voltage disconnect assembly 39

CCable connections

P-50 31–32P-60 17–18

Cablesconnection points, P-50 (illustrated) 31connection points, P-60 (illustrated) 17

Connectionsadditional P-50 34additional P-50 digital 37additional P-60 21additional P-60 interface 24analog interface/utility board, P-50 32audio & keyline (analog interface/utility board), P-60 19cable connection points, P-50 (illustrated) 31cable connection points, P-60 (illustrated) 17digital interface/utility board, P-50 36digital interface/utility board, P-50 (illustrated) 37digital interface/utility board, P-60 23hand-held terminal to P-50 45hand-held terminal to P-60 45hand-held terminal to packaged system 44interconnection with analog interface/utility board (P-50),

illustrated 67interconnection with analog interface/utility board (P-60),

illustrated 58interconnection with digital interface/utility board (P-50),

illustrated 60, 61, 62order wire handset 43order wire handset to packaged system, illustrated 44plugs for TB1 and TB2, illustrated 19

DDescription, equipment 8Diagnostics and programming 10Digital interface/utility board

connections, P-50 36connections, P-60 23P-50 component locations, illustrated 70P-60 (illustrated) 24P-60, P/N 03-2472A02 component locations, illustrated 64P-60, P/N 03-2472A03 component locations, illustrated 63

EEnclosure types 8Equipment description 8

FFuses

replacing 47

HHand-held terminal

connecting to P-50 45connecting to P-60 45connection to packaged system 44

IIllustrations

analog interface/utility board component locations (P-50) 68

analog interface/utility board component locations (P-60) 59

analog interface/utility board connections, P-50 33analog interface/utility board, P-60 20cable connection points, P-50 31cable connection points, P-60 17digital interface/utility board component locations

(P-50) 70digital interface/utility board component locations (P-60,

P/N 03-2472A02) 64digital interface/utility board component locations (P-60,

P/N 03-2472A03) 63exploded view, P-60 (AC version) 56, 57interconnection diagram with analog interface/utility board


I-2 MDS P-60/P-60 HL Reference Guide MDS 05-2818A01, Rev. C

(P-50) 67interconnection diagram with analog interface/utility board

(P-60) 58interconnection diagram with digital interface/utility board

(P-50) 60, 61, 62interior view, P-50 66interior view, P-60 (AC version) 55keying options, P-50 analog interface/utility board 35keying options, P-60 analog interface/utility board 22low-voltage disconnect assembly (component locations) 40low-voltage disconnect assembly (line diagram) 41low-voltage disconnect assembly (schematic diagram) 41MDS P-50 mounting dimensions 27MDS P-60 mounting dimensions 13MDS packaged radio systems 8order wire handset connected to packaged system 44P-50 digital interface/utility board connections 37P-60 digital interface/utility board 24plugs for TB1 and TB2 connectors 19pole mounted installation, P-50 29pole mounted installation, P-60 15typical rack mount installation, P-50 30typical rack mount installation, P-60 16typical wall mount installation, P-50 28typical wall mount installation, P-60 14, 15

Installationadditional P-50 interface connections 34additional P-60 interface connections 21cable connections, P-50 31–32cable connections, P-60 17–18considerations, P-50 26considerations, P-60 12final P-50 tasks 38mounting the P-50 enclosure 26mounting the P-60 enclosure 12pole mounting instructions, P-50 28pole mounting instructions, P-60 15rack mount alternative, P-50 29rack mount alternative, P-60 16wall mounting instructions, P-50 27wall mounting instructions, P-60 13

KKeying

options, illustrated 22, 35P-50 34–35P-60 20–22

LLow-voltage disconnect assembly 39

MMaintenance

adjustments, P-50 64–66adjustments, P-60 52–54battery charging check, P-50 65battery charging check, P-60 54fuse replacement 47preventive 47service drawings, P-50 66–70

MDS 9360, special note for users 46Mounting dimensions, MDS P-50 27

Mounting dimensions, MDS P-60 13Mounting the P-50 enclosure 26Mounting the P-60 enclosure 12

OOperation

battery backup 39connecting an order wire handset 43initial power-up 39operational test 42using interface/utility board features and indicators 42

Order wireadjusting levels, P-50 65adjusting levels, P-60 53connecting a handset 43handset, connection to packaged system, illustrated 44

PP-50

additional digital connections 37analog interface/utility board connections 32Analog interface/utility board connections, illustrated 33cable connections 31–32connecting hand-held terminal to 45digital interface/utility board connections 36digital interface/utility board connections, illustrated 37installation considerations 26installation, final tasks 38interconnection diagram with analog interface/utility

board 67interconnection diagram with digital interface/utility

board 60, 61, 62interior view, AC version (illustrated) 55interior view, illustrated 66keying 34–35keying options (analog interface/utility board),

illustrated 35mounting dimensions 27mounting the enclosure 26–30pole mounted installation, illustrated 29pole mounting instructions 28rack mount alternative 29rack mount installation, illustrated 30service drawings 66–70typical wall mount installation (illustrated) 28unpacking and inspection 26wall mounting instructions 27

P-60additional interface connections 24analog interface/utility board, illustrated 20audio & keyline connections (analog interface/utility

board) 19cable connections 17–18connecting hand-held terminal to 45digital interface/utility board connections 23digital interface/utility board, illustrated 24exploded view, AC version (illustrated) 56, 57installation considerations 12interconnection diagram with analog interface/utility

board 58keying 20–22keying options (analog interface/utility board),

illustrated 22mounting dimensions 13


MDS 05-2818A01, Rev. C MDS P-60/P-60 HL Reference Guide I-3

mounting the enclosure 12–16plugs for TB1 and TB2 connectors, illustrated 19pole mounted installation, illustrated 15pole mounting instructions 15rack mount alternative 16rack mount installation, illustrated 16typical wall mount installation (illustrated) 15typical wall mounted installation (illustrated) 14unpacking and inspection 12wall mounting instructions 13

Packaged radio systems, illustrated 8Packaged systems

accessories 11specifications 10

Pole mounting instructions, P-50 28Pole mounting instructions, P-60 15Power

initial power-up 39low-voltage disconnect assembly 39

Power, primary 9Programming and diagnostics 10

RRack mount installation, P-50 (illustrated) 30Rack mount installation, P-60 (illustrated) 16Rack mounting, P-50 29Rack mounting, P-60 16

SSpecifications 10

TTables

J1 pin connections (analog interface/utility board), P-50 33troubleshooting chart 50

Transmit/receive audio level, adjustingP-50 64P-60 52

Troubleshooting 50table of symptoms and corrective actions 50

UUnpacking and inspection, P-50 26Unpacking and inspection, P-60 12

WWall mounting instructions, P-50 27Wall mounting instructions, P-60 13


I-4 MDS P-60/P-60 HL Reference Guide MDS 05-2818A01, Rev. C


IN CASE OF DIFFICULTY...

GE MDS products are designed for long life and trouble-free operation. However, this equipment, as with all electronic equipment, may have an occasional component failure. The following information will assist you in the event that servicing becomes necessary.

TECHNICAL ASSISTANCE

Technical assistance for GE MDS products is available from our Technical Support Department during business hours (8:00 A.M.–5:30 P.M. Eastern Time). When calling, please give the complete model number of the radio, along with a description of the trouble/symptom(s) that you are experiencing. In many cases, problems can be resolved over the telephone, without the need for returning the unit to the factory. Please use one of the following means for product assistance:

Phone: 585 241-5510 E-Mail: [email protected]: 585 242-8369 Web: www.gemds.com

FACTORY SERVICE

Component level repair of this equipment is not recommended in the field. Many components are installed using surface mount technology, which requires specialized training and equipment for proper servicing. For this reason, the equipment should be returned to the factory for any PC board repairs. The factory is best equipped to diagnose, repair and align your radio to its proper operating specifications.

If return of the equipment is necessary, you must obtain a Service Request Order (SRO) number. This number helps expedite the repair so that the equipment can be repaired and returned to you as quickly as possible. Please be sure to include the SRO number on the outside of the shipping box, and on any corre-spondence relating to the repair. No equipment will be accepted for repair without an SRO number.

SRO numbers are issued online at www.gemds.com/support/product/sro/. Your number will be issued immediately after the required information is entered. Please be sure to have the model number(s), serial number(s), detailed reason for return, "ship to" address, "bill to" address, and contact name, phone number, and fax number available when requesting an SRO number. A purchase order number or pre-payment will be required for any units that are out of warranty, or for product conversion.

If you prefer, you may contact our Product Services department to obtain an SRO number:

Phone Number: 585-241-5540Fax Number: 585-242-8400E-mail Address: [email protected]

The radio must be properly packed for return to the factory. The original shipping container and packaging materials should be used whenever possible. All factory returns should be addressed to:

GE MDS, LLCProduct Services Department(SRO No. XXXX)175 Science ParkwayRochester, NY 14620 USA

When repairs have been completed, the equipment will be returned to you by the same shipping method used to send it to the factory. Please specify if you wish to make different shipping arrangements. To inquire about an in-process repair, you may contact our Product Services Group using the telephone, Fax, or E-mail information given above.


GE MDS, LLC175 Science ParkwayRochester, NY 14620

General Business: +1 585 242-9600FAX: +1 585 242-9620Web: www.gemds.com


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