agilent technologies 8753es option h85

Agilent Technologies 8753ES Option H85

Agilent Technologies8753ES Option H85

User’s and Service Guide Supplement

This User’s and Service Guide Supplement is intended for usewith the following documents:

Agilent 8753ES Network Analyzer’s User’s GuidePart Number 08753-90472

Agilent 8753ES Network Analyzer’s Reference GuidePart Number 08753-90473

Agilent 8753ES Network Analyzer’s Service GuidePart Number 08753-90484

Agilent 8753E High Power Application Note 1287-6,Publication Number 5966-3319E

Agilent Part Number: 08753-90522

Printed in USA May 2000

iv

NoticeThe information contained in this document is subject to change without notice. Agilent Technologies makes no warranty of any kind with regard to this material, including but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Agilent Technologies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

Agilent Technologies assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Agilent Technologies.

Restricted Rights LegendUse, duplication, or disclosure by the U.S. Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013 for DOD agencies, and subparagraphs (c)(1) and (c)(2) of the Commercial Computer Software Restricted Rights clause at FAR 52.227-19 for other agencies.

© Copyright 2000 Agilent Technologies

v

Warranty Information

IMPORTANT Certification

Agilent Technologies certifies that this product met its published specifications at the time of shipment from the factory. Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology (NIST, formerly NBS), to the extent allowed by the Institute’s calibration facility, and to the calibration facilities of other International Standards Organization members.

NOTE The actual warranty on your instrument depends on the date it was ordered as well as whether or not any warranty options were purchased at that time. To determine the exact warranty on your instrument, contact the nearest Agilent Technologies sales or service office with the model and serial number of your instrument. See the list of sales and service offices in this document.

This Agilent Technologies instrument product is warranted against defects in material and workmanship for the warranty period. During the warranty period, Agilent Technologies will, at its option, either repair or replace products which prove to be defective.

If the warranty covers repair or service to be performed at the Buyer’s facility, then the service or repair will be performed at the Buyer’s facility at no charge within Agilent’s service travel areas. Outside Agilent’s service travel areas, warranty service will be performed at Buyer’s facility only upon Agilent’s prior agreement, and Buyer shall pay Agilent’s round-trip travel expenses. In all other areas, products must be returned to a service facility designated by Agilent.

If the product is to be returned to Agilent Technologies for service or repair, it must be returned to a service facility designated by Agilent Technologies . Buyer shall prepay shipping charges to Agilent Technologies and Agilent Technologies shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products returned to Agilent Technologies from another country.

Agilent Technologies warrants that its software and firmware designated by Agilent Technologies for use with an instrument will execute its programming instructions when properly installed on that instrument. Agilent Technologies does not warrant that the operation of the instrument, or software, or firmware will be uninterrupted or error-free.

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Limitation of Warranty. The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer, Buyer-supplied software or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or improper site preparation or maintenance.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. AGILENT TECHNOLOGIES SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

EXCLUSIVE REMEDIES

THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. AGILENT TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

Contents

Contents-1

8753ES Option H85 OverviewIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1. Installation, Control, and SpecificationsInstalling the 8753ES Option H85 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

Check the Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2Controlling the Option H85 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

Menu Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3Manual Control of the Option H85 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

Attenuator Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3R Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3Phase Lock Menu Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

GPIB Control of the Option H85 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5Attenuator Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Example GPIB Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5R IN Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Example GPIB Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5Phase Lock Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

2. Application ConceptsApplication Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

High Power Amplifier Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2High Power Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Initial Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4Determining Power Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5Additional Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6Selecting Power Ranges and Attenuator Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7Final Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9High Power 2 Port Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-11High Power Forward Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12

3. Servicing the Option H85 Test SetIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2Adjustment Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

Equipment Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3Performing Test 53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

Replaceable Parts and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5Option H85 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7CPU Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7Checking the Option H85 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8Option H85 Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8Major Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8Coupler Bracket Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12RF Rear Panel Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13Installation and Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14

Contents-2

Contents

Switch Cable Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19Deck Assembly Removal or Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21SMA to SMA Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23LED PC Board Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25Coupler Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27Coupler Bracket Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29Cable Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31Cable Installation Source and R-Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33Coupler Bracket Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35Cable Installation R-Switch to R-Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37Cable Installation PORT A and PORT B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39PORT 1 and PORT 2 SWITCH to F/R Transfer Switch Cables . . . . . . . . . . . . . . . . . . . 3-41RF IN to F/R Transfer Switch Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43RF OUT to Source Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47RF IN to RF OUT Jumper Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-49Front Panel Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-50Option H85 Front View Without Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-51Option H85 Bottom View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52Option H85 Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53Option H85 Front Bottom View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-54

1

8753ES Option H85 Overview

2 Overview

8753ES Option H85 OverviewIntroduction

IntroductionThis User’s and Service Guide Supplement contains information that is only pertinent on the setup, operation, and service of the 8753ES Option H85. This manual supplement is intended to be used in conjunction with the following documents:

• 8753ES Network Analyzer’s User’s Guide,part number 08753-90472

• 8753ES Network Analyzer’s Reference Guide,part number 08753-90473

• 8753ES Network Analyzer’s Service Guide,part number 08753-90484

• Using a Network Analyzer to Characterize High Power Components,Application Note 1287-6, Publication Number 5966-3319E

IMPORTANT Refer to the 8753ES standard documentation for information on certification, warranty, safety and regulatory information.

Overview 3

8753ES Option H85 OverviewOverview

OverviewThe 8753ES Option H85 provides a built-in, high-power capable test set. High power measurements can be made up to 20 watts (+43 dBm) maximum at each test port. The usable frequency range of the Option H85 is 50 MHz to 3 GHz or 6 GHz with the standard Option 006. Frequencies below 50 MHz are degraded due to the roll-off of the couplers.

The front panel test ports are 3.5mm male. All other front panel connections are 3.5mm female.

The 8753ES Option H85 uses a mechanical transfer switch (A24) to route the RF signal to Port 1 or Port 2. The inactive port is grounded through the transfer switch. Continuous switching is not allowed between forward and reverse measurement states.

Access to the analyzer’s RF source is located on the rear panel of the analyzer. These connections are 3.5mm female. This allows an RF amplifier to be connected in the RF source path to increase test port power.

Test port coupler access to the transfer switch is located on the front panel. Coupler access allows the user to connect high power circulators or isolators to protect the internal transfer switch when making high power measurements.

A and B channel access to the samplers is also located on the front panel. Sampler access allows the user to increase the dynamic range and lower the noise floor. The maximum power to the A and B samplers is +10 dB. Recommended power to the sampler is –10 dB. Maximum power to the attenuators is 1 watt (+30 dBm).

The A and B channel attenuators are built into the Option H85 test set. The attenuators may be set with different settings. Once the values are set, they must remain the same for both the forward and reverse measurements. Once set, they cannot be uncoupled to allow a channel attenuator forward measurement to differ from reverse measurement state value settings.

These variable mechanical attenuators range from 0 to 55 dB in 5 dB steps. The variable attenuators are used to reduce the power to the A and B channel samplers. The A and B channel attenuators can either be controlled manually by the 8753ES display user softkeys or by GPIB settings. These settings can be saved in instrument states.

Do not exceed the maximum power of 10 dBm to the A, B, and R Samplers. If the maximum power is exceeded, damage will occur.

4 Overview

8753ES Option H85 OverviewOverview

The R IN port is located on the front panel and allows direct access to the R–Channel. R IN is used to provide an external reference signal used for ratioing. To ensure optimum power level at the receiver, add any needed attenuation to reduce the power level to –10 dBm. R IN’s external maximum power is +10 dBm.

The Option H85 default is set to the internal reference channel when the instrument is preset or during power on.

Control of the internal reference switch is provided using the TESTSET I/O FWD and TESTSET I/O REV display keys and GPIB commands. A decimal value of seven is for internal and a decimal value of six is for external.

Analyzers equipped with Option H85 can be configured to measure high power devices. This ability is useful if the required input power for a device under test is greater than the analyzer can provide, or if the maximum output power from an amplifier under test exceeds the safe input limits for a standard analyzer.

Analyzers equipped with Option H85 are capable of increasing their RF output levels by means of inserting an external, high power booster amplifier. As a result, up to 20 watts (+43 dBm) can be delivered to a device or amplifier under test. The maximum test port input power is 1 watt (+30 dBm) CW, but jumpers on the front panel allow the insertion of high power attenuators or isolators. This allows test device output levels up to the power limits of the inserted components.

1-1

1 Installation, Control, and Specifications

1-2 Chapter 1

Installation, Control, and SpecificationsInstalling the 8753ES Option H85

Installing the 8753ES Option H85The Option H85 is pre-installed in the test set at the factory. Refer to the standard 8753ES documentation for complete installation information.

Check the Shipment

1. After you have unpacked your Option H85, it is recommended that you keep the original packaging materials so they can be used if your instrument needs to be transported.

2. Check the items shipped with your Option H85 against the items listed in Table 1-1 to make sure that you have received everything.

3. Inspect the Option H85 and all accessories for any signs of damage that may have occurred during shipment. If any of the equipment appears to be damaged or missing, call your nearest Agilent sales or service office. Refer to the table at the end of this manual supplement for the nearest office.

Table 1-1 Option H85 Accessories Supplied

Description Part Number Quantity

User’s and Service Guide Supplement 08753-90522 1

Application Note 5966-3319E 1

Chapter 1 1-3

Installation, Control, and SpecificationsControlling the Option H85

Controlling the Option H85The following information describes the manual control and the GPIB control of the Option H85.

Menu Keys

The following menu keys are only available on the Option H85. The menu keys are identified as follows:

Hardkey – A key located on the front panel and identified by the label on the key. A hardkey is shown as a bolded word with an initial capital letter in this document. For example: Configure Menu.

Softkey – A key located to the side of the instrument display and identified by the wording on the display. A softkey is shown as a bolded word in all uppercase letters in this document. For example: TTL OUT.

Manual Control of the Option H85

Attenuator Control

The following key entries will control the A and B channel attenuators.

Press System, CONFIGURE MENU, OPTION Hxx, CONFIG.

Press ATTENUATOR A or ATTENUATOR B.

Press the desired decimal value [D], attenuation X 1.

R Control

Press Seq, TTL I/O, TTL OUT, TESTSET I/O FWD [D], X 1

Press I/O REV, [D], X 1

Press desired decimal value [D].

6 = External

7 = Internal

1-4 Chapter 1

Installation, Control, and SpecificationsControlling the Option H85

Phase Lock Menu Keys

1. Press System, SERVICE MENU, SERVICE MODES, PPL AUTO OFF or

2. Press System, INSTRUMENT MODE, FREQ OFFS MENU, FREQ OFFS ON.

With the frequency offset mode on (FREQS OFF ON), the phase lock of the Option H85 is turned off.

NOTE Banded high power solutions require that the Phase Lock be turned OFF or an error message will be displayed on the LCD display. Phase lock should be established once a day or before calibration in order to maintain the analyzer’s integrity.

Chapter 1 1-5

Installation, Control, and SpecificationsGPIB Control of the Option H85

GPIB Control of the Option H85General Purpose Interface Bus (GPIB) and Hewlett-Packard Interface Bus (HP-IB) are different names for the same command structure. Currently, “HP-IB” is changing to “GPIB”, so some instruments may be labeled “HP-IB” while others are labeled “GPIB”. The format and command structure is not affected by this name change.

Attenuator Control

The following GPIB commands will control the A and B channel attenuators:

ATTA[D]

ATTB[D]

Example GPIB Command

OUTPUT 716;”ATTA10”!SET A atten to 10 dB

OUTPUT 716;”ATTA20”!SET B atten to 20 dB

R IN Control

The following GPIB commands will control the R-Channel switch:

TSTIOFWD[D]

TSTIOREV[D]

Example GPIB Command

OUTPUT 716;”TSTIOFWD6”;”TSTIOREV6”;!External Control

OUTPUT 716;”TSTIOFWD7”;”TSTIOREV7”;!Internal Control

Phase Lock Controls

There are no GPIB commands for controlling the phase lock through the service modes.

Phase lock can be turned off or on by:

OUTPUT 716;”FREQOFFSON”!Phase lock off

OUTPUT 716;”FREQOFFSOFF”!Phase lock on

NOTE Banded high power solutions require that the Phase Lock be turned OFF or an error message will be displayed on the LCD display. Phase lock should be established once a day or before calibration in order to maintain the analyzer’s integrity.

1-6 Chapter 1

Installation, Control, and SpecificationsSpecifications

SpecificationsThe specifications in this section apply to the 8753ES Option H85. For standard instrument specifications, refer to the standard analyzer documentation.

Table 1-2 shows the uncorrected instrument specifications for the Option H85.

Table 1-2 Option H85 Instrument Specifications, Uncorrected

Uncorrected Performance Specifications

Description 50 MHz to500 MHz (dB)

500 MHz to2 GHz (dB)

2 GHz to6 GHz (dB)

Directivity 30 30 21

Source Match 16 18 14

Load Match 26 24 15

Reflection Trackinga ±3 ±3 ±3

Transmission Trackinga

±3 ±3 ±3

Crosstalk 70 100 90

a. Excludes rolloff below 840 MHz, which is characteristi-cally –3 dB at 500 MHz, –15 dB at 100 MHz, and –20 dB at 50 MHz.

Chapter 1 1-7


Table 1-3 shows the corrected instrument specification for the Option H85. The specifications listed describe the system performance of the Option H85 network analyzer. The system hardware includes the following:

Calibration Kit 85033D

Cables 85131F

Table 1-3 Option H85 Instrument Specifications, Corrected

Corrected Performance Specifications

Description 50 MHz to500 MHz (dB)

500 MHz to2 GHz (dB)

2 GHz to6 GHz (dB)

Directivity 42 42 38

Source Match 37 37 31

Load Match 42 42 38

Reflection Tracking ±0.005 ±0.005 ±.005

Transmission Tracking

±0.028 ±0.03 ±0.096

1-8 Chapter 1


TEST PORT INPUTS

Description Specification

OUTPUT POWER a

Linearity (25 ±5×C)

–15 to +15 dBm ±0.2 dB (relative to 0 dBm output level)

+5 to +10 dBm (Standard) ±0.2 dB (relative to 0 dBm output level)

FREQUENCY

Frequency Range

Standard 50 MHz to 3 GHz

Option 006 50 MHz to 6 GHz

Damage Level +26 dBm or > 6 Vdc

Frequency Response (25 ±5×C)

50 MHz to 500 MHz ±25 dB

500 MHz to 800 MHz ±5 dB

800 MHz to 6 GHz ±3 dB

Frequency Offset Operation

Frequency Range 50 MHz to 6 GHz

R-Channel Input Requirements 0 to –30 dBm, to 3 GHz

(required for phase-locked operation) 0 to –25 dBm, 3 GHz to 6 GHz

External Source Mode (CW Time sweep only)

Frequency Range 50 MHz to 6 GHz

R Input Requirements

Power Level 0 to –25 dBm

Chapter 1 1-9


Harmonic Measurement Accuracy (25 ±5×C)

±18 dB 50 MHz to 300 MHz

±3.5 dB 300 MHz to 3 GHz

±3.5 dB 3 GHz to 6 GHz (Option 006 on

a. Excludes rolloff below 840 MHz, which is characteristically –3 dB at 500 MHz, –15 dB at 100 MHz, and –20 dB at 50 MHz.

TEST PORT INPUTS

Description Specification

OUTPUT POWER a

Linearity (25 ±5×C)

–15 to +15 dBm ±0.2 dB (relative to 0 dBm output level)

+5 to +10 dBm (Standard) ±0.2 dB (relative to 0 dBm output level)

1-10 Chapter 1


2-1

2 Application Concepts

2-2 Chapter 2

Application ConceptsApplication Concepts

Application Concepts

High Power Amplifier Testing

Analyzers equipped with Option H85 are capable of increasing their RF output levels by means of inserting an external, high power booster amplifier. As a result, up to 20 watts (+43 dBm) can be delivered to a device under test (DUT) or amplifier under test. The maximum test port input power is 1 watt (+30 dBm) CW, but jumpers on the front panel allow the insertion of high power attenuators or isolators. This allows test device output levels up to the power limits of the inserted components.

To protect the analyzer from high power levels, this option allows the addition of isolators at both test ports and includes internally controlled step attenuators located between the couplers and samplers.

NOTE When making high power amplifier measurements, careful planning is required and precautions must be observed. For more information on how to make high power measurements, refer to the chapter on “Making Measurements” in the standard documentation.

Figure 2-1 provides the test configuration for setting up the RF Input using automatic power meter calibration.

Figure 2-1 Test Configuration for Setting RF Input using Automatic Power Meter Calibration

Chapter 2 2-3


High Power Measurements

Analyzers equipped with Option H85 can be configured to measure high power devices. This ability is useful if the required input power for a device under test is greater than the analyzer can provide or if the maximum output power from an amplifier under test exceeds safe input limits for a standard analyzer. The Option H85 can be set up in the standard mode of operation. However, in the standard mode of operation the Option H85 will not be able to make high power measurements.

This section provides the following information:

1. Initial Setup

2. Determining Power Levels

3. Additional Setup

4. Selecting Power Ranges and Attenuator Settings

5. Final Setup

6. High Power 2 Port Configuration Example

7. High Power Forward Configuration Example

2-4 Chapter 2


Initial Setup

Figure 2-2 shows the initial setup of the Option H85 for making high power measurements.

1. If the analyzer is in the bypass mode configuration, remove the jumper between the RF OUT and RF IN connector on the rear panel.

2. Connect the booster amplifier RF INPUT connector to the RF OUT connector on the rear panel of the analyzer.

3. Connect a 20 dB coupler (that operates within the frequency range of interest) to the booster amplifier RF OUTPUT connector.

Figure 2-2 High Power Test Setup

Chapter 2 2-5


Determining Power Levels

The following provides the information needed to determine what the correct power levels are and what additional attenuation is needed, if any.

4. Switch on the analyzer and reduce the power level to −20 dBm by pressing Menu, POWER, PWR RANGE AUTO, POWER RANGES, −20 x1.

5. Switch on the booster amplifier.

6. Using a power meter, measure the output power from the coupled arm and the open port of the coupler.

NOTE Depending on the power meter being used, additional attenuation may need to be added between the coupler port and the power meter.

7. Verify the gain of the booster amplifier. For example, if the analyzer output power level was set to −20 dBm and the output power measured from the open end of the coupler was −5 dBm, then the gain of the booster amplifier would be +15 dB.

8. Verify that the power measured in step 6 is well within the acceptable limits (less than −10 dBm for the coupled arm, less than +43 dBm for the open port).

9. Estimate the maximum power level that will be needed to force the DUT into compression.

10.At the maximum estimated power level, determine if the maximum output power from the coupled arm of the coupler will be higher than the acceptable limit. If so, add the appropriate amount of attenuation that will keep the coupled output power below 0 dBm and above −25 dBm.

2-6 Chapter 2


Additional Setup

Figure 2-3 (rear view) and Figure 2-4 (front view) show how to make the RF amplifier and coupler connections to the Option H85.

11.Switch off the booster amplifier.

12.Make a connection between the open port of the 20 dB coupler and the RF IN connector on the rear panel of the analyzer.

13.Make a connection between the coupled arm of the 20 dB coupler (along with any added attenuation) and the R-CHANNEL IN connector on the front panel.

14.Turn the Phase Lock OFF. Press System, SERVICE MENU, SERVICE MODES, PLL AUTO OFF.

Figure 2-3 High Power Test Setup (Amplifier and Coupler Connections)

Figure 2-4 High Power Test Setup (RF IN Connections)

Chapter 2 2-7


Selecting Power Ranges and Attenuator Settings

The following information describes how to select the correct power range, if an isolator is needed, and what amount of attenuation is needed. Refer to Figure 2-5 to identify the internal signal paths of the analyzer.

15.Select a power range that will not exceed the maximum estimated power level that will force the DUT into compression. For example, if your booster amplifier has a gain of +15 dB and the DUT will compress if supplied with +20 dBm, then you would adjust the analyzer output power to not exceed +5 dBm by pressing Power, PWR RANGE MAN, POWER RANGES, RANGE 0 −15 TO +10.

16.Adjust the analyzer power level to be below the maximum limit of the power range by pressing 0 (or less) x1.

17.Estimate the maximum amount of gain that could be provided by the DUT and, as a result, the maximum amount of power that could be received by TEST PORT 2 when the DUT is in compression. For example, if a DUT with a maximum gain of +10 dB receives an input of +20 dBm, then the maximum amount of power that could be received by TEST PORT 2 is +30 dBm. If this power level is greater than +30 dBm, an isolator is needed to protect the internal mechanical transfer switch.

Figure 2-5 Internal Signal Paths of Analyzer

2-8 Chapter 2


18.Calculate the amount of attenuation needed between the analyzer's couplers and samplers in order to not exceed the optimum sampler power level of −10 dBm.

In this example, it will be necessary to take the following into consideration:

• Sampler A will be coupled to the analyzer RF path that could receive power reflections as high as +20 dBm.

• Sampler B will be coupled to the analyzer RF path that will receive a maximum of +30 dBm from the DUT.

• Analyzer coupler loss is −16 dB.

• The optimum sampler power level is −10 dBm.

With the above points in mind, the amount of attenuation can be calculated from the following equations:

• Attenuator A = +20 dBm − 16 dB − (−10 dBm). Attenuator A = −14 dB

• Attenuator B = +30 dBm − 16 dB − (−10 dBm). Attenuator B = −24 dB

19.Set the internal step attenuators to the values calculated in the previous step (rounding off to the highest 5 dB step). Press System, CONFIGURE MENU, OPTION HXX CONFIG, ATTENUATOR A, 15 x1 ATTENUATOR B 25 x1.

20.Switch on the booster amplifier.

CAUTION From this point forward, DO NOT press Preset unless you have first switched off the booster amplifier. Pressing Preset will return the analyzer to its default power level and default internal attenuator settings. This increase in power may result in damage to the DUT or the analyzer.

21.To activate the external reference mode, press Seq, TTL IO, TTL OUT, TESTSETIO, 6 x1, I/O REV, 6 x1.

22.Measure the output power from TEST PORT 1 and verify that it is as expected.

23.If you are measuring a highly reflective device, high power isolators should be inserted in place of the jumpers located between the two sets of front panel SWITCH and COUPLER connectors.

Chapter 2 2-9


Final Setup

The following steps provide the information needed to set measurement parameters and what considerations need to be taken for interpreting the measured data.

24.Confirm that all power and attenuator settings are correct and set the following measurement parameters:

Meas, Trans: FWD S21 (B/R)

25.Perform a response calibration:

• Connect the test port cables of the analyzer to form a thru configuration.

• Press Cal, CALIBRATE MENU, RESPONSE, THRU.

26.Make the connections shown in Figure 2-6. Switch on the AUT (amplifier under test) and measure the S21 gain of the amplifier under test to confirm the proper operation of the measurement test set up.

Figure 2-6 High Power Test Setup

27.Make any other desired high power measurements.

Ratio measurements such as gain will be correctly displayed. However, the displayed absolute power levels on the analyzer will not be correct. To correctly interpret power levels, the gain of the booster amplifier and the attenuator settings must be taken into consideration.

2-10 Chapter 2


NOTE If you are increasing the power level from the level set at calibration to the maximum level of compression, you must press Cal, INTERPOL ON to switch on interpolation.

If no calibration has been performed or if the instrument is in an uncalibrated state, the following must be taken into consideration when interpreting the measured data:

• The value of attenuation added to sampler A and B.

• The R-Channel reference level supplied from the coupled arm of the 20 dB coupler.

Chapter 2 2-11


High Power 2 Port Configuration Example

Figure 2-7 shows how the Option H85 can be set up for performing high power measurements at both ports.

Figure 2-7 High Power 2 Port

IN OUT

SOURCE

OUTIN INOUTA BPORT 1 PORT 2

SW CPLR CPLR SW

RF IN

High Power Isolator

High Power Coupler

High Power Amplifier

High Power Atten

+43 dBmMAX In

+43 dBmMAX In TestPorts 1&2

+10 dBmMAX RFIn

(+ 20 dBm)

30 dB

(+40 dBm)

(+40 dBm)20 dB

(- 10 dBm)

High Power Isolator20 dB 20 dB

DUT(+43 dBm)

Set B ChannelAtten to 40 dB

Loss of Port 2 to B OUT ~ 15 dB

Set A ChannelAtten to 30 dB

(+35 dBm)

2-12 Chapter 2


High Power Forward Configuration Example

Figure 2-8 shows an example of a high power forward direction configuration of the Option H85.

In this example, the test set I/O FWD is set to 7. The test set I/O REV is set to 6. With this setup, the R-Channel external reference is set for forward measurements only. The reverse measurement uses the internal R-Channel reference.

Figure 2-8 High Power Configuration

High Power Amplifier

RF IN

IN OUT

SOURCE

IN OUT INOUTA BPORT 1 PORT 2

SW CPLR CPLR SW

High Power Coupler

High Power Isolator

RF Jumpers

3-1

3 Servicing the Option H85 Test Set

3-2 Chapter 3

Servicing the Option H85 Test SetIntroduction

IntroductionRefer to your standard analyzer documentation for operation and service information.

The Option H85 is verified using the verification tests for the standard 8753ES analyzer only.

Adapters, cables, and calibration kits used for verification and adjustment tests have been changed from the standard 7mm type to the 3.5mm type.

This section provides the following information:

• Adjustment Tests

• Replaceable Parts

• Block Diagram

• Major Assemblies

• Removal and Installation Procedures

Chapter 3 3-3

Servicing the Option H85 Test SetAdjustment Tests

Adjustment Tests

Equipment Required

• 85033D Calibration Kit

• 85131F Cables

• 10 dB Attenuators, 8493C 010, Quantity 2

• 6 dB Attenuators, 8493C 006, Quantity 2

• SMA to SMA Connector, part number 1250-1251, Quantity 2

• Flex Cables, part number 5062-6664, Quantity 2

NOTE If any part is replaced, the following adjustment tests must be performed. Press System, SERVICE MENU, TESTS, ADJUSTMENT TESTS. Do all of the adjustment tests from 44 through 54. For more information on executing the adjustment tests, refer to the service guide in the standard documentation.

3-4 Chapter 3

Servicing the Option H85 Test SetAdjustment Tests

Performing Test 53

Figure 3-1 shows how to configure the Option H85 for performing the adjustment tests.

To perform test 53, refer to the service guide provided with your standard instrument documentation. When a thru cable is needed, calibrate, find the loss of the cable, and enter the value on the test form.

Figure 3-1 Option H85 Test 53 Configuration

NOTE Cable loss is measured without the 16 dB attenuators attached.

PORT 1 PORT 2

A INB IN

16 dB16 dB

SMA Connectors

Flex Cables

Chapter 3 3-5

Servicing the Option H85 Test SetReplaceable Parts and Procedures

Replaceable Parts and ProceduresTable 3-1 contains the list of replaceable parts for the Option H85. If any internal part or assembly is replaced, you must run all performance tests to verify conformance to specifications. Refer to the standard instrument documentation for performance verification information.

NOTE The part numbers with an asterisk (*) are unique to this special option. To order a replacement part, please contact the Agilent Technologies Component Test Product Group Unit at (707) 577-6802 with the part number, module/model number, and option number. If ordering parts through your local Agilent Technologies sales or service office, specify that parts marked with an asterisk are ordered through the Component Test Product Group Unit.

NOTE Special options are built to order; therefore, long lead times may be encountered when ordering replacement parts.

Table 3-1 Option H85 Replaceable Parts

Description Part Number QuantityCable 10C 10F-14M (Attenuator Ribbon Cable) 5062-0701 2

3.5 mm Test Port Coupler 5086-7968 2Switch 3PT 24V (Forward/Reverse Transfer Switch) 33311J 1

Board Assembly, LED 08720-60182 1Coupler Bracket/RF Deck 08753-00148* 1

RF Cable, Port 1 Attenuator to A Sampler 08753-20325* 1RF Cable, F/R Transfer Switch SW to Port 1 08753-20332* 1

RF Cable, Port 1 Coupler to Coupler Out 08753-20333* 1RF Cable, Coupler Coupled Port to Sampler Out 08753-20334* 2

RF Cable, Port 2 Coupler to Coupler Out 08753-20335* 1RF Cable, Port 1 Attenuator to Port 1 A IN 08753-20336* 1RF Cable, Port 2 Attenuator to B Sampler 08753-20337* 1

RF Cable, F/R Transfer Switch to RF IN (Rear) 08753-20338* 1RF Cable, Source to RF OUT (Rear) 08753-20339* 1

RF Cable, F/R Transfer Switch to Port 2 SW 08753-20340* 1RF Cable, Port 2 Attenuator to Port 2 B In 08753-20918* 1

RF Cable, R Channel IN to R Channel Switch 08753-20919* 1RF Cable, R Channel Coupler to Switch Common

Port08753-20920* 1

RF Cable, Source to R Channel Switch 08753-20921 1Rear Panel 08753-60243 1

Front Panel Assembly 08753-60288* 1

3-6 Chapter 3


NOTE Before opening the analyzer, read all of the warnings and cautions in the standard documentation.

CAUTION Before opening the instrument, make sure the instrument is unplugged from its power source.

Chapter 3 3-7


Option H85 Block Diagram

Figure 3-2 is a visual representation of how the Option H85 works. The Option H85 block diagram can be used for troubleshooting and as a reference for theory of operation.

Figure 3-2 Option H85 Block Diagram

CPU Board

The following procedure describes the process for turning on the Option H85 if the CPU board has been replaced.

CAUTION It is extremely important that the following procedure is done correctly. If a mistake is made during the Peek Poke addressing, the integrity of the instrument may be corrupted. If corruption occurs, the instrument will need to be returned to the factory.

For A/B Attenuator control, press System, SERVICE MENU, PEEK/POKE, PEEK/POKE, ADDRESS, Enter [1619001535], POKE, [1] X1.

For mechanical switch control, press System, SERVICE MENU, PEEK/POKE, PEEK/POKE, SERVICE MENU, POKE ADDRESS, Enter [1619001540], POKE, [1] X1.

Press REST MEMORY.

S

S

S

10 to 300 kHz

ALC

A3 SOURCE

PHASE LOCK

A4,A5,A6 SAMPLER/MIXER

TEST SET AREA8753ES H85

HIGH POWER43dBm MAX

2nd LO1st IF

R

A

B

1st LO

R IF

A IF

B IF

EXT AM

A24 TRANSFER

SWITCHA21 COUPLER

A22 COUPLER

Port 1 COUPLERPort 1 SWITCH

PORT 1

PORT 2

Port 2 COUPLERPort 2 SWITCH

R IN

RF INRF OUT

A & B STEP ATTEN

0-55dB

0-55dB

rear paneloutputs

B OUTB IN

A INA OUT

3-8 Chapter 3


Checking the Option H85 Installation

Perform the following procedure to see if the Option H85 has been installed:

Press System, CONFIGURE MENU.

Press OPTION Hxx CONFIG (this should be displayed as the fourth key from the top).

Option H85 Replacement Procedure

If parts of Option H85 need to be replaced, the following parts are included:

• Transfer Switch

• Couplers

• Samplers

• Rear Panel RF IN and RF OUT

• Cables

The following instructions are intended as a guide in replacing the parts that make up the Option H85. To allow more detail to be shown of the parts in the Option H85, the figures used do not show all parts of the assembled analyzer.

Refer to the standard documentation for detailed instructions on how to remove and replace assemblies from the analyzer.

Tools Required

Major Assemblies

This section provides information on the locations of the major assemblies used in the Option H85. For clarity of detail, not all parts of the assembled instrument are shown. Refer to Figure 3-5 on page 3-12, Figure 3-6 on page 3-13, and Figure 3-7 on page 3-14.

The removal and installation procedures are described in some detail to provide complete instruction for installing or removing any of the Option H85 parts. Most of the following procedures remove the front panel assembly to gain access to the Option H85 assemblies. It is possible, however, to access the Option H85 switches and cables by removing just the top and bottom covers leaving the front panel assembly attached to the instrument.

5/16-inch wrench

Chapter 3 3-9


NOTE To work on the Option H85, make sure the instrument has been disconnected from the ac power. Also, be sure that all work is done at an antistatic workstation.

Set up a static safe workstation. Electrostatic discharge (ESD) can damage or destroy components. Refer to Figure 3-3.

NOTE Refer to the 8753ES service guide for information on removing and installing assemblies that are not part of the Option H85.

Figure 3-3 Example of an Antistatic Workstation

3-10 Chapter 3


Figure 3-4 shows the major assemblies of the Option H85 in the network analyzer seen from the bottom front. This view shows all of the components and cables installed to make the Option H85 with the following exceptions:

• PC Board installed on the deck

• Attenuator control cables

• Coupler bracket

• Rear panel connections and cable (RF IN)

Descriptions and part numbers for the assemblies in Figure 3-4 are provided below:

Figure 3-4 Major Assemblies

12

3

456

7

89

10111213

141516

Chapter 3 3-11


Item Description Part Number

1 RF Cable, A Sampler to Port 1 Attenuator 08753-20325

2 RF Cable, B Sampler to Port 2 Attenuator 08753-20337

3 RF Cable, Port 1 A IN to Port 1 Attenuator 08753-20336

4 RF Cable, Switch Port 1 to Port 1 SWITCH 08753-20332

5 Attenuator Port 1 33321-60050

6 Switch Mechanical (F/R Transfer Switch) 33311J

7 Deck Assembly N/A

8 RF Cable, Switch Common Port to RF IN (Rear Panel)

08753-20338


10 Switch (Standard, R-Channel) 5087-7067

11 RF Cable, Switch Port 2 to Port 2 SWITCH 08753-20340

12 RF Cable, Port 2 B IN to Port 2 Attenuator 08753-20918

13 RF Cable, R-Channel IN to R-Channel Switch 08753-20919

14 RF Cable, Source to R-Channel Switch 08753-20921

15 RF Cable, R-Channel Coupler to Switch Common Port

08753-20920

16 Cable Bracket 08753-00137

3-12 Chapter 3


Coupler Bracket Assembly

Information on the parts used to assemble the coupler bracket is provided below.

Figure 3-5 Coupler Bracket Assembly

1

2

3

4

5 6

7

8

9


1 SMA to SMA Connector 1250-1251

2 Coupler Bracket 08753-20148-2

3 Coupler Port 2 5086-7968

4 RF Cable, Coupler Coupled Port to Sampler Out 08753-20334

5 RF Cable, Port 2 Coupler to Coupler Out 08753-20335


7 RF Cable, Coupler Coupled Port to Sampler Out 08753-20334

8 Coupler Port 1 5086-7968

9 LED PC Board 08720-60182

Coupler Nut (not shown) 5022-1087

Chapter 3 3-13


RF Rear Panel Assembly

The following information describes the parts used to build the RF IN and RF OUT rear panel assembly.

Figure 3-6 RF IN, RF OUT Rear Panel Assembly

1

2

3

4

5

6


1 Connection to Source

2 RF Cable, Source to RF OUT (Rear) 08753-20339

3 Install wire tie 1400-0249

4 RF Cable, F/R Transfer Switch to RF IN (Rear) 08753-20338

5 Rear Connector Bracket 08720-00089

6 SMA to SMA Connector 1250-1251

3-14 Chapter 3


Installation and Removal Procedures

Deck Assembly

The following section provides information on how to install or remove the parts used on the deck assembly.

Figure 3-7 Deck Assembly

2

3

4

5

6

10

9

8

7

111

Chapter 3 3-15


1. Remove the bottom cover.

2. Remove the front panel from the instrument. refer to the standard documentation

3. Disconnect the cables going to the coupler bracket assembly using a 5/16-inch wrench.

4. Remove the coupler bracket from the deck assembly. There is one screw on the side and two screws on the deck assembly. Six screws hold the coupler bracket to the front frame. Refer to Figure 3-17 on page 3-35.

5. Remove the deck assembly. Refer to “Deck Assembly Removal or Installation” on page 3-21.

PORT 1 Attenuator Installation or Removal

1. Remove the ribbon cable from J12 on the PC board.

2. The Port 1 attenuator is attached to the deck with two screws. The screws are started on the opposite side of the deck from where the attenuator is located. Remove the two screws.

3. To install the Port 1 attenuator, replace the ribbon cable that is supplied with the new attenuator with the longer cable, part number 5062-0701. Reverse steps one and two. Torque the two screws to 10 inches-pound (in-lb).


1 Cable 10C 10F-14M (Attenuator Control Ribbon Cable) 5062-0701

2 Port 1 Attenuator 33321-60050

3 Attenuator Mounting Screws (2) 2200-0150

4 F/R Switch Mounting Screws (2) 0515-0667

5 F/R Switch (Refer to Figure 3-9 on page 3-19) 33311J

6 PC Board (Refer to Figure 3-8 on page 3-17) 08753-60280

7 R-Channel Switch (Refer to Figure 3-9 on page 3-19) 5087-7067

8 R-Channel Switch Mounting Screw (2) 0515-0430

9 Port 2 Attenuator 33321-60050

10 Port 2 Attenuator Mounting Screws (2) 2200-0150

11 Cable 10C 10F-14M (Attenuator Control Ribbon Cable) 5062-0701

3-16 Chapter 3


PORT 2 Attenuator Installation or Removal


2. The Port 2 attenuator is attached to the deck with two screws. The screws are started on the opposite side of the deck from where the attenuator is located. Remove the two screws.

3. To install the Port 2 attenuator, replace the ribbon cable that is supplied with the new attenuator with the longer cable, part number 5062-0701. Reverse steps one and two. Torque the two screws to 10 in-lb.

F/R Switch Installation or Removal

1. Remove the cable harness from J3 on the PC board.

2. Remove the two screws that hold the switch to the deck. Both screws are located on the same side of the deck as the switch.

3. To install or remove the cable harness, refer to “Switch Cable Installation” on page 3-19.

4. Reverse steps 1 and 2 to install the F/R switch.

R-Channel Switch Installation or Removal


2. Remove the two screws that hold the switch to the deck. Both screws are located on the same side of the deck as the switch is.

3. To install or remove the cable harness, refer to “Switch Cable Installation” on page 3-19.

4. Reverse steps 1 and 2 to install the R-Channel switch.

Chapter 3 3-17


PC Board Installation

The following section provides information on how to install or remove the PC board from the deck assembly.

Figure 3-8 Deck Assembly PC Board Installation or Removal


1 PC Board 08753-60280

2 J3 Connector

3 Connector Not Used


5 J12 Connector

6 J1 50 Pin Ribbon Cable Connector

7 J11 Connector


9 J4 Connector



12 PC Board Mounting Screws (5) 0515-0372

1

3

5

6

7

8

9

2

4

10

12

11

3-18 Chapter 3



2. Remove the front panel from the instrument. Refer to the standard documentation.

3. Disconnect the cables going to the coupler bracket assembly. Use a 5/16-inch wrench.

4. Remove the coupler bracket from the deck assembly. One screw on the side and two screws on the deck assembly. Six screws also hold the coupler bracket to the front frame. Refer to Figure 3-17 on page 3-35.

5. Remove the Port 1 attenuator cable from J12 on the PC board.

6. Remove the F/R switch wire harness from J3 on the PC board.

7. Remove the R-Channel switch wire harness from J4 on the PC board.

8. Remove the Port 2 attenuator cable from J11 on the PC board.

9. Remove the five screws that hold the PC board to the deck assembly.

10.To install the PC board, reverse steps 1 through 8. Torque the screws to 10 in-lb.

Chapter 3 3-19


Switch Cable Installation

The following provides information on how to install or remove the switch harness from the switch (R-Channel and F/R transfer).

Figure 3-9 Switch Cable Installation

1

2

3

4

5


1 F/R Transfer Switch 33311J

R-Channel Switch 5087-7067

2 Wire Harness 85047-60004

3 Blue Wire to Terminal 2

4 Red Wire to Common Terminal

5 Green Wire to Terminal 1

3-20 Chapter 3



2. Disconnect the six cables (see the list below) on the deck assembly. Refer to Figure 3-4 on page 3-10.

For the F/R Transfer Switch:

• F/R Transfer Switch Common Terminal to RF IN (Rear Panel)

• F/R Transfer Switch Port 1 to Coupler Bracket Port 1 SW, part number 08753-20332

• F/R Transfer Switch Port 12 to Coupler Bracket Port 2 SW, part number 08753-20340

For the R-Channel Switch:

• R-Channel Switch Common Terminal to R-Channel,part number 08753-20920

• R-Channel Switch Port 2 to Source, part number 08753-20921

• R-Channel Switch Port 1 to Coupler Bracket, part number, 08753-20919

3. Remove the bad switch with the wire harness by removing the two screws and disconnecting the cable from J3 or J4 on the PC board.

4. De-solder and re-solder the wire harness to the switch (both switches are wired the same) as shown in Figure 3-9 on page 3-19.

5. Install the new switch with the wire harness onto the deck assembly. Torque the mounting screws to 10 in-lb.

6. Re-connect the cables removed in step 1.

Chapter 3 3-21


Deck Assembly Removal or Installation

The following information is provided on how to remove or install the deck assembly.

Figure 3-10 Deck Assembly Installation

1

2

3

4


1 Deck Assembly 08753-00148-1

2 Mounting Screw Deck to Chassis (x2) 0515-0375

3 Mounting Screw Deck to Chassis (x2) 0515-0375

4 Mounting Screw Deck to Side Rail (x2) 0515-0458

3-22 Chapter 3




3. Remove the top and bottom covers.


5. Remove the coupler bracket from the deck assembly. There is one screw on the side and two screws on the deck assembly. Six screws hold the coupler bracket to the front frame. Refer to Figure 3-17 on page 3-35 for placement of the cables.

6. Disconnect the six cables listed below at the deck assembly. Refer to Figure 3-4 on page 3-10.

• F/R Transfer Switch Common Terminal to RF IN (Rear Panel)

• F/R Transfer Switch Port 1 to Coupler Bracket Port 1 SW

• F/R Transfer Switch Port 2 to Coupler Bracket Port 2 SW

• R-Channel Switch Common Terminal to R-Channel

• R-Channel Switch Port 2 to Source

• R-Channel Switch Port 2 to Coupler Bracket R IN

• J1 Ribbon Cable

7. Remove the deck assembly from the instrument. Refer to Figure 3-10 on page 3-21.

8. To install the deck assembly, reverse steps one to five. Torque the screws to 10 in-lb.

Chapter 3 3-23


SMA to SMA Installation

The following section provides information on how to install or remove the SMA to SMA connectors on the coupler bracket.

Figure 3-11 Coupler Bracket SMA to SMA Connector Installation

1

2


1 SMA to SMA Connectors (Nine Places) 1250-1251


3-24 Chapter 3






5. Remove the required coupler bracket cables. Refer to Figure 3-14 on page 3-29.

6. Place the new SMA to SMA connectors into the coupler bracket. Torque to 10 in-lb.

7. Re-install the coupler bracket and re-connect all of the cables. Torque to 10 in-lb.

Chapter 3 3-25


LED PC Board Installation

The following information is provided on how to install or remove the LED PC board assembly from the coupler bracket assembly.

Figure 3-12 LED PC Board Installation

1

2


1 LED PC board 08720-60182

2 Screws (3) 0515-0430

3-26 Chapter 3






5. Replace the LED PC board. Torque the screws to 10 in-lb.


Chapter 3 3-27


Coupler Installation

The following section provides information on installing or removing the coupler(s) from the coupler bracket.

Figure 3-13 Coupler Installation

1

2


1 Coupler Port 1 and Port 2 5086-7968

2 Coupler Nut (2) 5022-1087

3-28 Chapter 3




3. Disconnect the cables going to the coupler bracket assembly with a 5/16-inch wrench.

4. Remove the coupler bracket from the deck assembly There is one screw on the side and two screws on the deck assembly. Six screws additional screws hold the coupler bracket to the front frame. Refer to Figure 3-17 on page 3-35.

5. Remove the required coupler bracket cables. Refer to Figure 3-14 on page 3-29.

6. Replace the coupler on the coupler bracket. Torque the coupler nut to 71 inch-pounds.


Chapter 3 3-29


Coupler Bracket Assembly

Information on how to install or remove the coupler bracket cables is provided below.

Figure 3-14 Coupler Bracket Assembly

1

2 3

4


1 RF Cable, Coupler Coupled Port to B OUT 08753-20334



4 RF Cable, Coupler Coupled Port to A OUT 08753-20334

3-30 Chapter 3






5. Replace the defective cable on the coupler bracket using a 5/16-inch wrench. Torque the cable connection to 10 in-lb.


Chapter 3 3-31


Cable Installation

The following section provides information on how to install or remove the B Sampler to Port 2 Attenuator cable or the A Sampler to the Port 1 Attenuator cable.

Figure 3-15 Cable A and B Sampler to PORT 1 and 2 Attenuator Installation

1

2

Top Front View Bottom Deck View


1 RF Cable, B Sampler to Port 2 Attenuator 08753-20337

2 RF Cable, A Sampler to Port 1 Attenuator 08753-20325

3-32 Chapter 3






5. Remove the cable for the A Sampler using a 5/16-inch wrench.

6. Remove the A Sampler cable from the Port 1 attenuator on the deck.

7. Remove the cable for the B Sampler using a 5/16-inch wrench.

8. Remove the B Sampler cable from the Port 2 attenuator on the deck.

9. Re-install the cable(s). Torque to 10 in-lb.

Chapter 3 3-33


Cable Installation Source and R-Channel

Information on how to install or remove the Source to R-Channel Switch cable or the R-Channel to R-Channel Switch cable is provided below.

Figure 3-16 Cable Source and R-Channel to R-Channel Switch and Cable Bracket

1

2

Top Front View Bottom Deck View

4

3


1 RF Cable, Source to R-Channel Switch Port 2 08753-20921

2 RF Cable, R-Channel to R-Channel Switch Common Terminal

08753-20920

3 Cable Bracket 08753-00137

4 Cable Bracket Mounting Screw 0515-0665

3-34 Chapter 3






5. Remove the cable bracket.

6. Remove the Source to R-Channel Switch cable from the source.

7. Remove the Source to R-Channel Switch cable from the R-Channel Switch Port 2.

8. Replace the Source to R-Channel Switch cable by reversing steps 1 through 7. Torque the connections to 10 in-lb.

9. Remove the R-Channel to R-Channel Switch cable from the R-Channel.

10.Remove the R-Channel to R-Channel Switch cable from the R-Channel Switch common terminal.

11.Replace the R-Channel to R-Channel Switch cable by reversing steps 1 through 7, 9 and 10. Torque the connections to 10 in-lb.

Chapter 3 3-35


Coupler Bracket Installation

Provided below is information on how to install or remove the coupler bracket.

Figure 3-17 Coupler Bracket Installation

1

2 3

4



2 Coupler to Deck Mounting Screws (2) 0515-1946

3 Coupler to Frame Mounting Screws (6) 0515-1946

4 Coupler to Side of Frame Mounting Screws (1) 0515-1400

3-36 Chapter 3





4. Remove the coupler bracket from the deck assembly by removing one screw on the side and two screws on the deck assembly. There are six more screws holding the coupler bracket to the front frame. Refer to Figure 3-17 on page 3-35.

5. Replace any defective part on the coupler bracket assembly as needed.

6. To re-install the coupler bracket, reverse steps 1 through 4. Torque to 10 in-lb.

Chapter 3 3-37


Cable Installation R-Switch to R-Channel

The following section provides information on how to install or remove the R-Channel to the Port 2 cable on the R-Channel Switch.

Figure 3-18 Switch to R-Channel

1

2

3

4


1 SMA Connector (R-Channel) 1250-1251

2 RF Cable, R-Channel to R-Channel Switch Port 2

08753-20919

3 R-Channel Switch Port 2

4 R-Channel Switch 5087-7067

3-38 Chapter 3



2. Remove the front panel from the instrument.

3. Disconnect the R-Channel to R-Channel Switch Port 2 cable attached to the coupler bracket assembly with a 5/16-inch wrench.

4. Remove the R-Channel to R-Channel Switch Port 2 cable from the R-Channel switch port 2 on the deck assembly.

5. Replace the R-Channel to R-Channel Switch Port 2 cable to the R-Channel SMA connector on the front panel and to the R-Channel switch port 2. Torque to 10 in-lb.

6. Reverse steps 1 and 2 to complete the process. Torque to 10 in-lb.

Chapter 3 3-39


Cable Installation PORT A and PORT B

The following data is provided on how to install or remove the PORT A and PORT B cables to the PORT A and PORT B attenuators.

Figure 3-19 Cable, PORT A and PORT B, to Attenuator Installation

1 6

5

4

2

3


1 Port 1 A IN

2 RF Cable, Port 1 Attenuator to Port 1 A IN 08753-20336



5 RF Cable, Port 2 Attenuator to Port 2 B IN 08753-20918

6 Port 2 A IN

3-40 Chapter 3




3. Remove the PORT 1 A IN to PORT 1 attenuator or PORT 2 B IN to PORT 2 attenuator cables using a 5/16-inch wrench.

4. Replace the PORT 1 A IN to PORT 1 attenuator or PORT 2 B IN to PORT 2 attenuator cables with a 5/16-inch wrench. Torque to 10 in-lb.

5. Reverse steps 1 and 2 to complete the process.

Chapter 3 3-41


PORT 1 and PORT 2 SWITCH to F/R Transfer Switch Cables

The following section provides information on how to install or remove the PORT 1 and PORT 2 SWITCH cables from the F/R Transfer switch port 1 and port 2 connectors.

Figure 3-20 Cable Switch to PORT 1 and PORT 2 SWITCH

1

2

4

5

6

3


1 Port 1 SW (Switch)

2 RF Cable, F/R Transfer Switch Port 2 to Port 1 SW 08753-20332

3 F/R Transfer Switch Port 2

4 F/R Transfer Switch Port 1

5 RF Cable, F/R Transfer Switch Port 1 to Port 2 SW 08753-20340

6 Port 2 SW (Switch)

3-42 Chapter 3




3. Remove the defective cable attached to the SMA connector on the coupler bracket assembly, PORT 1 SWITCH or PORT 2 SWITCH with a 5/16-inch wrench.

4. Remove the defective cable attached to the F/R Transfer switch port 1 or port 2 with a 5/16-inch wrench.

5. Replace the defective cable. Torque to 10 in-lb.

6. Re-install the bottom cover and front panel, then torque to 10 in-lb.

Chapter 3 3-43


RF IN to F/R Transfer Switch Cable

The following section provides information on how to install or remove the RF IN to F/R Transfer switch cable.

Figure 3-21 Cable Switch to Rear Panel RF IN

1

2

3

4


1 Rear Panel Bracket 08720-00089

2 RF IN Connector 1250-1251

3 RF Cable, F/R Transfer Switch Common Port to RF IN Rear Panel Bracket

08753-20338

4 F/R Transfer Switch Common Port

3-44 Chapter 3



2. Remove the rear panel from the instrument. Refer to Figure 3-23 on page 3-47.

3. Remove the cable from the F/R Transfer switch common port using a 5/16-inch wrench.

4. Remove the cable from the RF IN connector on the rear panel bracket. Use a 5/16-inch wrench.


6. Re-install the cable by reversing steps 1 through 4. Torque to 10 in-lb.

Chapter 3 3-45


RF OUT to Source Cable

The following information is provided on how to install or remove the RF OUT to Source cable.

Figure 3-22 Cable Source to Rear Panel RF OUT

1

2

4

3


1 Source Connection

2 RF Cable, Source to RF OUT 08753-20339

3 SMA Connector, RF OUT 1250-1251

4 Rear Panel Bracket 08720-00089

3-46 Chapter 3


1. Remove the top cover.

2. Remove the rear panel from the instrument. Refer to Figure 3-23 on page 3-47.

3. Remove the cable from the Source. Use a 5/16-inch wrench.

4. Remove the cable from the RF OUT connector on the rear panel bracket using a 5/16-inch wrench.


6. Re-install the cable by reversing steps 1 through 4. Torque to 10 in-lb.

Chapter 3 3-47


Rear Panel

The following section provides information on how to install or remove the analyzer’s rear panel.

Figure 3-23 Rear Panel Installation

3

1

2

4


1 Rear Panel

2 RF OUT Connector with Alignment Tool Attached

3 RF IN Connector with Alignment Tool Attached

4 RF Bracket Mounting Screws (2)

3-48 Chapter 3


1. Install the alignment tools.

2. Remove the two screws that hold the RF bracket to the rear panel.

3. Remove the rear panel. Refer to the standard documentation.

4. Remove the RF IN and RF OUT cables from the RF bracket with a 5/16-inch wrench.

5. To replace an SMA to SMA connector, use a 5/16-inch wrench to remove or install the new connector. Reverse steps 1 through 5 to complete the assembly. Torque to 10 in-lb.

6. To replace the RF bracket, remove the RF bracket and replace it by reversing steps 1 through 5. Torque to 10 in-lb.

Chapter 3 3-49


RF IN to RF OUT Jumper Cable

Information on how to install or remove the RF IN to RF OUT jumper cable is provided below.

Figure 3-24 Cable Rear Panel RF IN to RF OUT Installation

1. Remove or install the RF IN to RF OUT jumper cable using a 5/16-inch wrench. Torque to 10 in-lb.

1

2

3


1 RF IN to RF OUT Jumper Cable 08720-20098

3-50 Chapter 3


Front Panel Jumpers

The following data is provided on how to install or remove the front panel jumpers.

Figure 3-25 Cable Front Panel Jumpers

1. Remove or install the front panel jumper cables using a 5/16-inch wrench. Torque to 10 in-lb.


1 Jumper Cable, A OUT to A IN 08720-20098

2 Jumper Cable, Port 1 SWITCH to Port 1 COUPLER 08720-20098

3 Jumper Cable, Port 2 COUPLER to Port 2 SWITCH 08720-20098

4 Jumper Cable, B IN to B OUT 08720-20098

5 Hole Plug 6960-0023

Chapter 3 3-51


Option H85 Front View Without Front Panel

The following graphic provides a visual layout of what the front of theOption H85 should look like with the front panel removed.

Figure 3-26 Front View of Instrument without Front Panel Installed

3-52 Chapter 3


Option H85 Bottom View

The following graphic provides a visual layout of the Option H85 showing what the bottom of the instrument looks like with the front panel, bottom cover, and the deck PC board removed.

Figure 3-27 Bottom View of Instrument

Chapter 3 3-53


Option H85 Top View

The following provides a visual layout showing what the top of the Option H85 looks like with the front panel, top cover, and major standard assemblies removed.

Figure 3-28 Top View of Instrument

3-54 Chapter 3


Option H85 Front Bottom View

The following picture provides a visual layout of the Option H85 showing what the front and bottom of the instrument look like with the front panel, top cover, bottom cover, and deck PC board removed.

Figure 3-29 Bottom Front View

Chapter 3 3-55


Agilent Technologies Sales and Service Offices

UNITED STATES

Instrument Support CenterAgilent Technologies (800) 403-0801

EUROPEAN FIELD OPERATIONS

HeadquartersHewlett-Packard S.A. 150, Route du Nant-d’Avril 1217 Meyrin 2/ GenevaSwitzerland (41 22) 780.8111

FranceHewlett-Packard France 1 Avenue Du Canada Zone D’Activite De Courtaboeuf F-91947 Les Ulis Cedex France (33 1) 69 82 60 60

GermanyHewlett-Packard GmbH Hewlett-Packard Strasse 61352 Bad Homburg v.d.H Germany (49 6172) 16-0

Great BritainHewlett-Packard Ltd. Eskdale Road, Winnersh Triangle Wokingham, Berkshire RG41 5DZ England (44 118) 9696622

INTERCON FIELD OPERATIONS

HeadquartersHewlett-Packard Company 3495 Deer Creek Rd. Palo Alto, CA 94304-1316 USA(415) 857-5027

JapanHewlett-Packard Japan, Ltd. Measurement Assistance Center9-1, Takakura-Cho, Hachioji-Shi,Tokyo 192-8510, Japan TEL (81) 426-56-7832FAX (81) 426-56-7840

AustraliaHewlett-Packard Australia Ltd. 31-41 Joseph Street Blackburn, Victoria 3130 (61 3) 895-2895

SingaporeHewlett-Packard Singapore (Pte.) Ltd. 150 Beach Road #29-00 Gateway West Singapore 0718 (65) 291-9088

CanadaHewlett-Packard (Canada) Ltd. 17500 South Service Road Trans-Canada Highway Kirkland, Quebec H9J 2X8 Canada (514) 697-4232

TaiwanHewlett-Packard Taiwan 8th Floor, H-P Building 337 Fu Hsing North Road Taipei, Taiwan (886 2) 712-0404

ChinaChina Hewlett-Packard Co. 38 Bei San Huan X1 Road Shuang Yu Shu Hai Dian District Beijing, China (86 1) 256-6888

agilent technologies 8753es option h85

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