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WorkHorse Quartermaster 150kHz ADCP

User’s Guide

P/N 957-6214-00 (April 2005)

RD InstrumentsAcoustic Doppler Solutions

Table of Contents WorkHorse Quartermaster 150kHz ADCP User's Guide ......................................................................... 1

Introduction...............................................................................................................................................................1 Overview ..................................................................................................................................................................1 Hardware Overview..................................................................................................................................................2

Battery Packs and Power Overview....................................................................................................................3 Serial Communication Overview.........................................................................................................................5

Deployment Software Overview ...............................................................................................................................6 Test and Data Review Software .........................................................................................................................6 Self-Contained Deployment Software Overview.................................................................................................7 Real-Time Deployment Software Overview ........................................................................................................8

Installing the Software ..............................................................................................................................................9 Setup the WH150 ADCP............................................................................................................................ 10

Initial Battery Connection........................................................................................................................................10 WH150 Setup .........................................................................................................................................................11 Connecting to the WH150 ......................................................................................................................................12 Changing the Baud Rate ........................................................................................................................................14 Bench Test .............................................................................................................................................................15

ADCP Preparation ..................................................................................................................................... 16 Visual Inspection ....................................................................................................................................................18 Seal the ADCP for Deployment ..............................................................................................................................20

End-Cap Removal Procedures .........................................................................................................................20 Battery Pack Module Removal .........................................................................................................................21 Battery Pack Core Replacement.......................................................................................................................21 Battery Pack Module Replacement...................................................................................................................22 End-Cap Replacement .....................................................................................................................................24 Check all Mounting Hardware is Installed.........................................................................................................26 Compass Alignment..........................................................................................................................................27

Preparing for Calibration ...................................................................................................................27 Compass Calibration Verification ......................................................................................................29 Compass Calibration Procedure .......................................................................................................29

Pressure Sensor Preparation .................................................................................................................................33 Where to Find More Information.............................................................................................................. 34 Technical Support..................................................................................................................................... 34

List of Figures Figure 1. WH150 Overview ............................................................................................................ 2 Figure 2. Battery Modules .............................................................................................................. 4 Figure 3. I/O Cable Wiring Diagram ............................................................................................... 5 Figure 4. WH150 Connections with RS-232 ................................................................................. 11 Figure 5. Visual Inspection Checklist............................................................................................ 17 Figure 6. Compass Calibration ..................................................................................................... 30

WorkHorse Quartermaster 150kHz ADCP User's Guide

P/N 957-6214-00 (April 2005) page 1

Acoustic Doppler Solutions


Introduction Thank you for purchasing a RD Instruments (RDI) WorkHorse Quartermaster 150kHz Acoustic Doppler Current Profiler (WH150). This User’s Guide will lead you through the steps required for a successful deployment. Please read the entire guide, and then follow the instructions in the order they are presented. Additional information can be found in the WorkHorse Quartermaster 150kHz ADCP Operation Manual that is supplied on CD-ROM.

NOTE. To purchase a printed copy of the WorkHorse Quartermaster 150kHz documentation (includes the WH150 Operation Manual, WH150 User’s Guide, Command and Output Data Format Guide, and software guides), contact our Customer Service department at [email protected] or call (858)-693-1178 and order the WH150 Manuals kit.

Overview The first step is to familiarize yourself with the WH150 ADCP. Read the short descriptions of the hardware and software that comes with the WH150.

This Section Covers:

• Hardware Overview

• Battery Packs and Power Overview

• Serial Communication Overview

• Deployment Software Overview

• Installing the Software


page 2 RD Instruments

Hardware Overview The WH150 ADCP system consists of an ADCP, cables, battery pack, flash memory card, and software. Both battery capacity and memory can be increased with upgrades for longer de-ployments. The WH150 can also be used for direct-reading current profile operation. The ADCP requires the addition of a Windows® compatible computer to configure the ADCP and replay collected data.

BEAM 3

URETHANE TRANSDUCER FACES

PRESSURE SENSOR

TRANSDUCER HEAD

ELECTRONICS ANDBATTERY PACKS

END-CAP

BEAM-3MARK

I/O CABLE CONNECTOR

HOUSING

Figure 1. WH150 Overview

The transducer assembly contains the transducer ceramics and electronics. The standard acoustic frequency is 150kHz. See the outline drawing for dimensions and weights.

I/O Cable Connector – Input/Output (I/O) cable connects the WH150 ADCP to the computer and external power supply.

Beam-3 Mark – The Beam-3 mark shows the location of Beam-3 (Forward).

Urethane Faces – The urethane faces covers the transducer ceramics. Never set the transducer on a hard surface. The urethane faces may be damaged.

Housing – The standard WH150 housing allows deployment depths to 1500 meters. The hous-ing is available in 851.0mm (Self-Contained and optional External Battery Case) and 320.2mm (Direct Reading) lengths.

Thermistor – The Thermistor measures the water temperature.

Pressure Sensor – The pressure sensor (standard 200 Bar) measures water pressure (depth).


P/N 957-6214-00 (April 2005) page 3

Transducer Head – The WH150 electronics and transducer ceramics are mounted to the trans-ducer head. The numbers embossed on the edge of the transducer indicate the beam number. When assembling the unit, match the transducer beam number 3 with the Beam 3 mark on the end-cap.

End-Cap – The end-cap holds the I/O cable connector. When assembling the unit, match the Beam 3 mark on the end-cap with beam 3 number on the transducer.

Internal Battery Pack Modules – The internal battery pack modules have 450 watt-hours (Wh) of usable energy at 0 C. When fresh, the voltage is +42 VDC. When depleted, the voltage drops to 30 VDC or less.

Flash Memory Card – WH150 ADCPs come standard with one memory card. Two PCMCIA memory cards slots are available, with the total memory capacity not to exceed 2GB.

Battery Packs and Power Overview WH150 ADCPs require +20 to 50 VDC to operate. The standard AC Adapter runs on any standard AC power and supplies +48 VDC to run the WH150 when the batteries are not con-nected. The WH150’s internal battery supplies +42 VDC.

NOTE. The AC Adapter input voltage is sufficient to override the internal battery voltage (i.e. the ADCP will draw all power from the AC adapter even if the batteries are installed and connected). Always use the AC adapter when testing the ADCP to conserve the battery power.

Keep in mind the following:

• RDI specifies its battery pack cores to have 450 Watt-hours (Wh) of usable en-ergy at 0°C.

• A Standard WH150 battery pack core holds 28 ‘D-cell’ alkaline batteries with a voltage, when new, of approximately 42 VDC.

• When the capacity of a battery pack is 50% used, the voltage (measured across the battery connector under no-load conditions) falls to approximately 32 to 35 volts. However, keep in mind that this voltage is not an accurate predictor of remaining capacity.

• Transmitted power increases or decreases depending on the input voltage (within the voltage range of 20 to 50 VDC). A fresh battery provides +42 VDC. Batteries spend most of their life at a nominal voltage of +33 VDC.

NOTE. The transmitted power is decreased one DB if the input voltage drops from 42 VDC to 33 VDC. For a WH150 ADCP, each one DB drop will result in a decrease in range of one default depth cell.

• Batteries should be replaced when the voltage falls below 30 VDC (measured across the battery connector under no-load conditions).

• Battery packs differ from one to another.

• Store batteries in a cool dry location (0 to 21 degrees C).



• Do not store batteries inside the ADCP for extended periods. The batteries may leak.

• Use batteries within one year (shelf life).

CAUTION. Batteries stored for more than 12 months should NEVER be used!

NOTE. Batteries less than 12 months old may be used for any length deployment. For example, if your deployment is going to be 12 months long and the battery label shows it is nine months old, it is safe to use the battery.

NOTE. Battery replacement induces both single and double cycle compass errors. The compass accuracy should be verified after replacing the battery pack. The compass does not have to be recalibrated if the compass verification passes specification.

These compass effects can be avoided by using an external battery pack. The external battery housing holds two battery modules, and can easily be replaced on-site. If the external battery is placed a minimum of 30 cm away from the ADCP, no compass calibration will be required.

Figure 2. Battery Modules

NOTE. The standard configuration includes 2 battery cores (one module). On the four battery pack Sentinel WH150 ADCP, the top battery pack module has a thicker and larger diameter top plate as well as a shorter battery pack power cable. This module will not slide down as far into the housing as the bottom module.


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Serial Communication Overview The standard communications settings for the WH150 is RS-232, 9600-baud, no parity, 8 data bits and 1 stop bit. Self-contained applications receive no benefit from setting a faster baud rate.

You can set the WH150 for baud rates other than 9600 baud using the CB command (see “Changing the Baud Rate,” page 14). If you make the new baud rates permanent with the CK command, WinSC and BBTalk will search for the correct settings if you use the Auto Detect function, which searches for the WH150’s current serial port and baud rate. If you tell the pro-grams these settings, you will save time required for searching. Both WinSC and BBTalk will use the last communication setting for future use.

Change Communication Setting. Changing a switch setting on the High Power I/O board will change the communication setting between RS-232 and RS-422. The switch is in plain view on the top circuit board, near the cable connectors. Its settings are plainly marked on the board. If the serial protocol is set for RS-422 and your computer expects RS-232, you will need an RS-232 to RS-422 adapter between the ADCP cable and your computer. This user’s guide assumes that you use RS-232. There is no reason to use RS-422 for Self-Contained op-erations.

NOTE. To gain access to the communication settings switch, the housing must be removed. See the WH150 Operation Manual for details.

REDYEL

BLK/WHTBLK

41

32985

P2

12564

37

POWER +POWER -

COMMUNICATION RETURN

RS-232 IN / CH A RS-485A / RS-422 OUT ARS-232 OUT / CH A RS-485B/ RS-422 OUT B

CH B RS-485A / RS-422 IN ACH B RS-485B / RS-422 IN B

P1BLKWHTBLUBRNGRN

P3

76

5

4

12

3

12 3

4

PIN 1PIN 6

Figure 3. I/O Cable Wiring Diagram



Deployment Software Overview WH150 deployments are most often Self-Contained but can be Real-Time. Typically, deploy-ments are considered to be Self-Contained when the ADCP is remotely deployed and powered using internal batteries. In this configuration, no external connections to the ADCP are made during the deployment. However, the ADCP can be connected to external power. This power can be provide either by an external battery case or from shore. This type of deployment is still considered Self-Contained, but this guide may not consider all of the possibilities of this application.

You will use several software programs with the WH150 ADCP.

Test and Data Review Software The BBTalk and WinADCP software programs are included with every system.

BBTalk Main Screen

BBTalk is a terminal emulator that al-lows your computer to communicate with the WH150 via RS422 or RS232.

Use BBTalk to test the WH150.

This guide does not go into detail about the operation of BBTalk. For more in-formation see the RDI Tools User’s Guide.

WinADCP Main Screen

WinADCP gives users a visual display of the entire set of data. You can zoom in on a portion of the data for closer analysis and export data to text or Mat-Lab files.

Use WinADCP to view color contour and time-series plots of data collected with VmDas.

For detailed information on how to use WinADCP, see the WinADCP User's Guide.


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Self-Contained Deployment Software Overview WinSC is the software package for self-contained ADCP setup, data collection, and data review. PlanADCP (part of WinSC) lets you enter known or “best-guess” values for the various ADCP profiling parameters and shows predictions of expected results. The WH150 can be used for several-month autonomous current profile deployments from temporary or permanent mount-ings in the ocean, near-shore, harbors, and lakes.

NOTE. If your deployment will be self-contained, view the WinSC and PlanADCP User’s Guide for a tutorial on collecting self-contained data.

WinSC and PlanADCP Main Screen

WinSC and PlanADCP are designed to set up a WH150 ADCP for collecting data. Specifically, PlanADCP will set the ADCP commands correctly.

The PlanADCP screen shows you an overview of your setup and the resulting consequences of your deployment.

For more information see the WinSC and PlanADCP User’s Guide.



Real-Time Deployment Software Overview Real-Time use refers to the fact you are viewing the data as the ADCP collects it via a personal computer. This data is also stored on the computer to allow for data playback and processing at a later time.

NOTE. If your deployment will be real-time, view the VmDas Quick Start Guide for a tutorial on collecting real-time data.

VmDas Main Screen

VmDas is designed for real-time data collection and processing of data gath-ered by an ADCP. The displays are designed to make evaluation of the cur-rents at a glance.


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Installing the Software You will be installing several software packages. These will be required for testing and de-ployments.

The WH150 software requires the following:

• Windows XP®, Windows 2000®, Windows NT 4.0® with Service Pack 4 in-stalled, Windows 98®, or Windows 95®

• Pentium class PC 233 MHz (350 MHz or higher recommended)

• 32 megabytes of RAM (64 MB RAM recommended)

• 6 MB Free Disk Space (20 MB recommended)

• One Serial Port (two High Speed UART Serial Ports recommended)

• Minimum display resolution of 800 x 600, 256 color (1024 x 768 recommended)

Software Installation

a. Insert the compact disc into your CD-ROM drive and then follow the browser instructions on your screen. If the browser does not appear, com-plete Steps "b" through "d."

b. On the Windows task bar, click the Start button, and then click Run.

c. Type <drive>:launch. For example, if your CD-ROM drive is drive D, type d:launch.

d. Follow the browser instructions on your screen



Setup the WH150 ADCP You will now connect the WH150 to a power supply and a computer with the RDI software installed.

This Section Covers:

• Initial Battery Connection

• WH150 Setup

• Connecting to the WH150

• Changing the Baud Rate

• Bench Tests

Initial Battery Connection When you first receive your WH150, the batteries are installed, but the battery power cables are not connected. Connect the batteries and seal the ADCP before deployment.

Remove the end-cap (see “End-Cap Removal Procedures,” page 20).

The battery pack power cable connec-tors are tucked around the battery mod-ule. Carefully pull them free.

Connect the battery pack power cables to the internal I/O cable.

Install the end-cap (see “End-Cap Re-placement,” page 24).

Align the compass (see “Compass Alignment,” page 27).


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WH150 Setup

I/O CABLEto Serial Port

(COM1 or COM2)

POWER SUPPLY

48 VDC

100 to 240 VAC50/60Hz

COMPUTER

ADCP

400 Wh BATTERY MODULES (2)(NOT CONNECTED WHEN SHIPPED)

20-60V!

BBTalkPC CARD

(INSTALLED ON DSP BOARD)

Figure 4. WH150 Connections with RS-232

CAUTION. WH150 battery modules are shipped inside the ADCP but not connected. Connect the battery and seal the ADCP before deployment.

STRAIGHTOUTMOTION

RETAINING STRAP

Connect I/O Cable to WH150

If you have not done so, connect the I/O cable to the WH150. Do so by pushing straight in against the connector. Re-member, don't bend the connector up at all, push straight in. Roll the retaining strap over the connector.

Note: Place a light amount of DC-111 lubricant on the connector pins (rubber portion only). This will make it easier to connect or remove the I/O cable and dummy plug.

Connect I/O Cable and Power Supply

Attach the I/O cable to your computer's communication port. The standard communications settings are RS-232, 9600-baud, no parity, 8 data bits and 1 stop bit. Self-contained applications receive no benefit from setting a faster baud rate.

Connect the power supply to the power cable.



Connecting to the WH150 Use these next steps to “talk” to the ADCP.

Start BBTalk

Start the BBTalk program (for help on using BBTalk, see the RDI Tools User's Guide).

On the Connect To screen, select WorkHorse.

Select the COM port the WH150 cable is connected to.

Click Next.

Enter the Baud Rate, Parity, Stop Bits, and Flow Control. If you are unsure of the settings, leave them at the default settings.

Click Next.

Click Finish.


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Wakeup

On the File menu, click Break (you can also press the End key to send a break or use the Toolbar and press the B but-ton).

You should see the wakeup message appear on the log file window.

If the wakeup message is not readable, do the following.

On the File menu, click Properties. Click the Auto Detect ADCP button. Click OK when the ADCP is detected. Try to wakeup the WH150 again.

What if the WH150 Does Not Respond

If your WH150 does not respond, check the serial port, cables, AC power, and battery connec-tion. If necessary, refer to the Troubleshooting section in the WorkHorse 150kHz Operation Manual.

CAUTION. WH150 batteries are shipped inside the ADCP but not connected. Connect the battery and seal the ADCP before deployment.



Changing the Baud Rate The WH150 can be set to communicate at baud rates from 300 to 115200. The factory default baud rate is always 9600 baud. The baud rate is controlled via the CB-command. The follow-ing procedure explains how to set the baud rate and save it in the WH150. This procedure as-sumes that you will be using the program BBTalk that is supplied by RD Instruments.

WorkHorse ADCP RD Instruments (c) 2003 All rights reserved. Firmware Version: xx.xx >cr1 [Parameters set to FACTORY defaults]

Connect the ADCP to the computer and apply power (see “WH150 Setup,” page 11).

Start the BBTalk program and establish communications with the ADCP. Wakeup the ADCP by sending a break signal with the End key.

At the ">" prompt in the communication window, type CR1 then press the Enter key. This will set the ADCP to the fac-tory default settings.

BAUD RATE CB-command 300 CB011 1200 CB111 2400 CB211 4800 CB311 9600 CB411 (Default) 19200 CB511 38400 CB611 57600 CB711 115200 CB811

Send the CB-command that selects the baud rate you wish. The table on the left shows the CB-command settings for different baud rates with no parity and 1 stop bit.

For example, to change the baud rate to 115200, at the ">" prompt in the com-munication window, type cb811 then press the Enter key.

Press F5 and change the Port Settings Baud Rate to match your CB command settings. Press OK to exit the commu-nication setup screen.

NOTE: If you send a BREAK before changing the Port Settings, the WH150 returns to the communication parame-ters stored in non-volatile memory (user settings).

>ck [Parameters saved as USER defaults]

Send the command CK to save the new baud rate setting. Exit BBTalk.

The ADCP is now set for the new baud rate. The baud rate will stay at this set-ting until you change it back with the CB-command.


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Bench Test The bench-testing process ensures that the WH150 is working properly before you put it in the water. The bench-test procedure will involve powered tests that will verify that the WH150’s electronics and transducers are functioning.

Testing the WH150

Click File, Send a Break to send the wakeup command (BREAK) to the ADCP

On the File menu, click Send Script File. Click the Browse button “...”.

On the Files of Type box select RDI Script (*.rds).

Select the TestWH.rds script file and click Open.

Follow the prompts on the screen.

To review the test results, open theWH_Test.txt results log file (*.txt) with any text editor (i.e. NotePad). The log file is in the same folder as BBTalk.



ADCP Preparation Proper WH150 preparation is critical for a successful deployment. In this section we will pre-pare the WH150 ADCP for deployment. Deployment Checklist

Visually inspect the ADCP Check the I/O Cable and connector pins for damage Check the housing condition for damage Check the transducer faces are clean and free from defects Check the zinc anodes condition Check the housing paint condition

Seal the ADCP for deployment Install and connect the battery Check Recorder PC card is installed Use fresh desiccant (2 bags) inside ADCP Install new o-rings; use silicone lubricant Check all mounting hardware is installed

Bench Tests Test the ADCP using BBTalk Verify the compass alignment using BBTalk; if necessary, re-calibrate Check the recorder status using BBTalk

Final Preparation for Deployment Are biofouling precautions needed? Clean the pressure sensor port Zero the pressure sensor (optional) at deployment site with AZ-command


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TRANSDUCER HEADCHECK O-RINGSAND MOUNTINGHARDWARE AREINSTALLED

ELECTRONICS ANDBATTERY PACKSCHECK PC CARD ANDBATTERIES AREINSTALLED

END-CAPCHECK O-RINGS ANDMOUNTING HARDWAREARE INSTALLED

I/O CABLE CONNECTORINSTALL DUMMY PLUG

HOUSINGCHECK FORSCRATCHESAND CHIPPEDPAINT

URETHANE TRANSDUCER FACESREMOVE BARNACLES AND CHECKFOR CRACKS

PRESSURE SENSORZERO BEFORE DEPLOYCHECK PORT HOLEIS CLEAR

VISUALLY INSPECT THE ADCP

ZINC ANODESCHECK FOR CORROSION

Figure 5. Visual Inspection Checklist



Visual Inspection Before connecting the WH150, make a quick visual inspection of the components to make sure nothing is damaged.

Check the I/O Cable and connector pins for damage

Roll the I/O cable rubber retaining strap up so that it does not hinder plug re-moval.

Remove the dummy plug or cable by pulling with a straight-out motion. Do not wiggle the connector up; this can dam-age the connector pins. A slight side-to-side wiggle as you are pulling on the cable is OK.

Inspect the pins for damage. Make sure that they are straight and that there is no corrosion on the metal surfaces. If the connector is damaged, contact RDI.

Check the transducer faces are clean and free from defects

Inspect the WH150 transducer for dam-age. There should be no cracks or peel-ing surfaces. If damage is present, re-turn the ADCP to RDI for repair.


P/N 957-6214-00 (April 2005) page 19

Zinc Anodes and Housing Paint

Check the zinc anode condition. If they are corroded, replace before deploying the ADCP.

Check the housing paint condition for any cracks, chips, peeling, etc. If any damage is present, repair before deploying the ADCP.



Seal the ADCP for Deployment Before you put the WH150 into the water, you must prepare it for deployment.

• Remove End-Cap and install and connect the battery module(s)

• Replace the desiccant inside the ADCP

• Install new o-rings; use silicone lubricant

• Check all mounting hardware is installed

• Compass Alignment

NOTE. Only the End-Cap removal/replacement and battery replacement instructions are included in this Quick Start Guide. If you need access to the WH150’s electronics, the housing must be removed. Please refer to the WorkHorse 150kHz Operation Manual Maintenance guide for detailed instructions.

End-Cap Removal Procedures To remove the end-cap, do the following steps.

Dry the outside of the WH150.

Stand the WH150 on its transducer faces on a soft pad.

Disconnect the I/O cable and install the dummy plug.

Loosen (do not remove) the four end-cap bolts to vent the system.

Once all four end-cap bolts (6-mm) have been loosened, remove the bolts from the end-cap.

Carefully pull the end-cap away from the housing. Do not damage the mating surfaces.

A lanyard prevents the end-cap from being pulled too far away from the hous-ing to prevent damage to the internal I/O cable. Place a cloth between the end-cap and housing to protect the paint; the lanyard will hold the end-cap.

Disconnect the two battery power cables from the internal I/O cable.


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Battery Pack Module Removal

Remove the wing nuts, lock washers, and washers holding the battery pack modules onto the posts.

Slide out the battery pack modules.

Battery Pack Core Replacement

Remove the battery pack module’s re-taining plate by unscrewing the six thumbscrews.

Disconnect each battery pack’s wiring harness.

Slide out the used battery cores.



Test the new battery pack voltage by measuring across the battery connector under no-load conditions. The voltage should be +42 VDC for a new battery pack.

Slide the new battery pack cores into the battery module. Make sure the bat-tery power cable is not pinched by the battery pack. Use rubber bands to hold the wiring in place.

Replace the battery pack module’s re-taining plate. Use the pins to align the retaining plate.

Tighten the thumbscrews “hand” tight only.

CAUTION. Although each thumbscrew has a screwdriver slot, do NOT use any tools to tighten the screws. Over-tightening can cause the threads to strip.

Battery Pack Module Replacement

Place the battery pack installation guides onto the threaded rods. Tighten the guides onto the threaded rod “finger tight” so they will not fall off.


P/N 957-6214-00 (April 2005) page 23

Slide the battery pack module(s) onto the rods. Use the battery pack installa-tion guides to help align the battery pack modules onto the threaded rods. As the battery module slides into the housing, make sure the battery module does not pinch any cables.

Once the battery pack module(s) have been installed, remove the battery pack installation guides from the threaded rods. Place the guides in your spare parts kit for safekeeping.

NOTE. On the four battery pack Sentinel WH150 ADCP, the top battery pack module has a thicker and larger diameter top plate as well as a shorter battery pack power cable. This module will not slide down as far into the housing as the bottom module.

NOTE. If you are installing less than four battery cores in the four battery Sentinel system, install both battery modules to maintain the proper spacing. Install the battery pack cores closest to the end-cap.

Place a flat washer, lock washer and wing nut on each of the posts. Tighten the nuts to hold the batteries in place.

Connect the battery pack power cables to the internal I/O cable.



End-Cap Replacement

Stand the WH150 on its transducer face on a soft pad.

Inspect, clean, and lubricate the O-ring on the end-cap. Apply a very thin coat of silicone lube on the O-rings.

Connect the lanyard to the end-cap.

NOTE. We recommend you use new O-rings if you are preparing for a deployment.

NOTE. RDI uses Dow Corning’s silicone lube model number 111 but any equivalent type of silicone O-ring lube can be used.

CAUTION. Apply a very thin coat of silicone lube on the O-ring. Using too much silicone lube on the O-ring can be more harmful than using no O-ring lube at all.

Remove a new desiccant bag from the airtight aluminum bag and place the desiccant bag on top of the battery modules.

Connect the internal I/O connector to the plug coming from the electronics chassis and batteries.


P/N 957-6214-00 (April 2005) page 25

END-CAP ASSEMBLY

HOUSING FLANGE (END-CAP SIDE)

END-CAP SOCKET HEAD BOLTS (6mm; 4 EACH)

FLAT WASHER

ISOLATATION BUSHING

LOCK WASHER

HEX NUT

FLAT NYLON WASHER

FLAT WASHER

Place the end-cap on the housing, align-ing the mating holes and the beam 3 notch facing the beam 3 number em-bossed on the transducer head. When mating the end-cap with the housing flange, try to apply equal pressure to all parts of the O-rings. Make sure the O-rings remain in their retaining grooves.

Examine the end-cap assembly nuts, bolts, and washers (6 mm) for corrosion; replace if necessary. All the hardware items are needed to seal the WH150 properly.

Install all four sets of hardware until “fin-ger-tight.”

Tighten the bolts in small increments in a “cross” pattern until the split washer flattens out, and then tighten each bolt ¼ turn more to compress the face seal O-ring evenly. Tighten the bolts to the recommended torque value of 5.6 New-ton-meters (50 pound-inches).

CAUTION. Check that no wires or any other object is pinched between the end-cap and the housing. Use rubber bands to hold the wiring in place as necessary. If the O-ring is not in the groove or if a wire or other object is pinched, the ADCP will flood.

CAUTION. Apply equal pressure to the O-rings as you tighten the bolts. If one bolt is tightened more then the others, the O-rings can become pinched or torn. Damaged O-rings will cause the system to flood.

CAUTION. Do not over tighten the bolts that hold the transducer, housing and end cap together. If you tighten too far, you can crack or break the plastic bushing. On the other hand, leaving the bolts too loose can cause the system to flood. Tighten the hardware to the recommended torque value.

NOTE. The recommended torque value for the end-cap 6mm bolts is 5.6 Newton-meters (50 pound-inches).



Check all Mounting Hardware is Installed If the housing is not properly sealed prior to deployment, the WH150 will be destroyed.

Transducer Head to Housing Seal

Visually inspect the mating surfaces of the housing to transducer head to en-sure that there are no obstructions. The faces should be parallel to one another and there should be no gaps. Check to ensure that the fasteners holding the housing together are tight.

The recommended torque value for the transducer head 8-mm bolts is 9.6 New-ton-meters (85 pound-inches).

End-Cap to Housing Seal

Visually inspect the mating surfaces of the end-cap to housing to ensure that there are no obstructions. The faces should be parallel to one another and there should be no gaps. Check to en-sure that the fasteners holding the hous-ing together are tight.

The recommended torque value for the end-cap 6-mm bolts is 5.6 Newton-meters (50 pound-inches).

CAUTION. If the WH150 was opened, read the WorkHorse Quartermaster 150kHz Operation Manual Maintenance section for details on WH150 re-assembly.


P/N 957-6214-00 (April 2005) page 27

Compass Alignment The main reason for compass calibration is battery replacement. Each new battery carries a different magnetic signature. The compass calibration algorithm corrects for the distortions caused by the battery to give you an accurate measurement. You should be aware of the fol-lowing items:

• We recommend against calibrating the WH150 while on a ship. The ship’s mo-tion and magnetic fields from the hull and engine will likely prevent successful calibration.

• If you think your mounting fixture or frame has some magnetic field or mag-netic permeability, calibrate the WH150 inside the fixture. Depending on the strength and complexity of the fixture’s field, the calibration procedure may be able to correct it.

NOTE. If the battery module was removed and replaced back in the same orientation, the compass does not require calibration. If the battery core is replaced, you must verify the compass.

Battery replacement induces both single and double cycle compass errors. The compass accuracy should be verified after replacing the battery pack. The compass does not have to be recalibrated if the compass verification passes specification.

These compass effects can be avoided by using an external battery pack. The external battery housing holds two batteries, and can easily be replaced on-site. If the external battery is placed a minimum of 30 cm away from the ADCP, no compass calibration will be required.

Preparing for Calibration

NOTE. Use the shipping case to rotate the WH150 during calibration—this way you will not scratch or drop the WH150 ADCP.

Position the shipping case on the floor as far away from metal objects as pos-sible.

Remove the vent on the side of the shipping case and use the hole to feed through the power and I/O cable.

Connect the WH150 as shown in “WH150 Setup,” page 11.



To tilt the Direct-Reading WH150, move the side foam

insert from the right side to the left.

Place the WH150 ADCP inside the shipping case. Place all the foam in-serts around the ADCP to keep the in-strument from shifting inside the case.

If you are doing a compass verification, the WH150 can be straight or tilted in-side the case. For the compass cali-bration, the WH150 must be tilted in-side the case.

Close and securely latch the shipping case cover.

Tip the shipping case on its end so that the WH150 ADCP is in the same orientation as it will be when de-ployed. The WH150 can rest on its end cap (deployed looking up), or it can rest on the transducer face (deployed look-ing down) inside the shipping case.

CAUTION. Do not tip the shipping case on its end without the cover in place and securely latched. The WH150 ADCP may fall out of the case causing damage to the instrument or personal injury.

NOTE. If you will deploy your WH150 looking up, calibrate it looking up. If you will deploy it looking down, calibrate it looking down.

CAUTION. If you calibrate the compass in one direction (up or down) and deploy the ADCP in the opposite direction (i.e. calibrate it in a downward position and deploy it in a upward position) the compass calibration will be invalid. Compass errors in excess of 5 degrees may occur.


P/N 957-6214-00 (April 2005) page 29

Compass Calibration Verification Compass calibration verification is an automated built-in test that measures how well the com-pass is calibrated. The procedure measures compass parameters at every 5º of rotation for a full 360º rotation. When it has collected data for all required directions, the WH150 computes and displays the results.

WorkHorse ADCP RD Instruments (c) 2003 All rights reserved. Firmware Version: xx.xx >

Start BBTalk. See the RDI Tools User’s Guide for assistance on using BBTalk.

Using BBTalk, send a Break to wake up the WH150.

>AX ---------------------------------------------------------------------- RDI Compass Error Estimating Algorithm Press any key to start taking data after the instrument is setup. Rotate the unit in a plane until all data samples are acquired... rotate less than 5°/sec. Press Q to quit. N NE E SE S SW W NW N ^ ^ ^ ^ ^

At the > prompt, type AX and press the Return key.

HEADING ERROR ESTIMATE FOR THE CURRENT COMPASS CALIBRATION: OVERALL ERROR: Peak Double + Single Cycle Error (should be < 5(): ( 1.55( DETAILED ERROR SUMMARY: Single Cycle Error: ( 1.54( Double Cycle Error: ( 0.07( Largest Double plus Single Cycle Error: ( 1.61( RMS of 3rd Order and Higher + Random Error: ( 0.31(

Rotate the WH150 slowly 360 degrees (approximately 5 degrees per second). Pay particular attention to the Overall Error.

If the overall error is less than 2°, the compass does not require alignment. You can align the compass to reduce the overall error even more (if desired).

Compass Calibration Procedure The built-in automated compass calibration procedure is similar to the alignment verification, but requires three rotations instead of one. The WH150 uses the first two rotations to compute a new calibration matrix and the third to verify the calibration. It will not accept the new ma-trix unless the calibration was carried out properly, and it asks you to verify that you want to use the new calibration if it is not as good as the previous calibration. While you are turning the WH150 for the two calibration rotations, the WH150 checks the quality of the previous calibration and displays the results. It compares these results with the results of the third cali-bration rotation.

There are two compass calibrations to choose from; one only corrects for hard iron while the other corrects for both hard and soft iron characteristics for materials rotating with the ADCP. Hard iron effects are related to residual magnetic fields and cause single cycle errors while soft iron effects are related to magnetic permeability that distorts the earth’s magnetic field and causes double cycle errors. In general, the hard iron calibration is recommended because the effect of hard iron dominates soft iron. If a large double cycle error exists, then use the com-bined hard and soft iron calibration.



UPWARD DEPLOYMENT

SHIPPING CASE

SHIPPING CASE

DOWNWARD DEPLOYMENTFirst Rotation

First Rotation

Second and Third Rotations

Second and Third Rotations

3

3

1, 2 or 4

1, 2 or 4

Figure 6. Compass Calibration

WorkHorse ADCP RD Instruments (c) 2005 All rights reserved. Firmware Version: xx.xx >

Using BBTalk, send a Break to wake up the ADCP.

>AF ---------------------------------------------------------------------- Field Calibration Procedure Choose calibration method: a. Remove hard iron error (single cycle) only. b. Remove hard and soft iron error (single + double cycle). c. Help. d. Quit.

At the > prompt, type AF and press the Return key. Choose option “b” to start the calibration procedure.


P/N 957-6214-00 (April 2005) page 31

Tilt the unit any direction so that the combined tilt magnitude is within the 10°-20° range indicated below. 0° 10° 20° 30° ^ ^***** ok tilt *****^ ^ ♦ 0.4° Pitch and 19.1° Roll are acceptable. Ok to continue [y, n]?

Tilt the WH150 using the cutout in the foam inside the shipping case. Place all the foam inserts around the WH150 to keep the instrument from shifting inside the shipping case.

Close and securely latch the shipping case.

Tip the shipping case on its end keeping the same ADCP orientation as it will be deployed in.

Check the on-screen instructions to see if the orientation is OK. Adjust as nec-essary.

When prompted, press “y” to continue and rotate the ADCP slowly 360 de-grees (approximately 5 degrees per second).

Now tilt the unit at least 10° in a different direction. SUGGESTIONS: Facing up: place the block under the end cap to either side of where the block was for the first rotation - not on the opposite side of the end cap!. Facing down: place the ADCP facing down on either of the two beams that are closest to the one you just used. Do not place the ADCP on the opposite beam. -19.3° Pitch and -0.5° Roll. Tilt is OK. Press any key to continue...

The second rotation requires the ADCP to be tilted 15 degrees in another direc-tion than from the first rotation. Follow the on-screen instructions to orient the ADCP correctly.

Open the shipping case.

Rotate the WH150 so that another beam is in the center of the rotation.

Place all the foam inserts around the WH150 to keep the instrument from shifting inside the shipping case.

Close and securely latch the shipping case.

Tip the shipping case on its end keeping the same ADCP orientation as it was before (i.e. if the previous rotation had the ADCP on its end-cap, make sure the ADCP is still on its end-cap).

When prompted, press any key to con-tinue and rotate the ADCP slowly 360 degrees (approximately 5 degrees per second).

CAUTION. Do not open the shipping case when the case is tipped on its end. The WH150 ADCP may fall out of the case causing damage to the instrument or personal injury.



Successfully evaluated compass performance after the field calibration update. Press any key to continue... Making new calibration parameters permanent. Calibration parameters have been updated in RAM and Flash. ---------------------------------------------------------------------- Field Calibration Procedure Hard and Soft Iron Calibration Compass field calibration procedure is complete. >>> Total error before calibration: 2.3° <<< >>> Total error after calibration: 0.2° <<<

The third rotation requires the ADCP to be tilted 15 degrees in another direction than from the first and second rotations. Follow the on-screen instructions to ori-ent the ADCP correctly.

If the calibration procedure is success-ful, it records the new calibration matrix to nonvolatile memory. The ADCP will not change its matrix unless the calibra-tion is properly carried out.

NOTE. If the calibration procedure is not successful, return your WH150 to the original factory calibration, by using the AR-command. Try using the AR-command if you have trouble calibrating your compass. In some circumstances, a defective compass calibration matrix can prevent proper calibration.


P/N 957-6214-00 (April 2005) page 33

Pressure Sensor Preparation In order to read the water pressure, water must be able to flow through the transducer anode and cover disk over the pressure sensor. The holes in the anode and cover disk may at times be blocked. Use the following procedure to clean the holes.

CAUTION. The pressure sensor is filled with silicone oil. Never poke a needle or other object through the anode while the anode is installed over the pressure sensor. You will perforate the sensor, causing it to fail.

Do not attempt to clean the surface of the pressure sensor. The diaphragm is very thin and easy to damage.

Do not remove the pressure sensor. It is not field replaceable.

ANODE

COVER DISK

PRESSURESENSOR

Place the Long Ranger on its’ side. Use a soft pad to protect the ADCP.

Use a straight-slot screwdriver to re-move the transducer anode.

Remove the two plastic screws holding the cover disk on.

Gently clean out the hole in the anode and cover disk with a needle. If the hole becomes enlarged or the anode is cor-roded, replace the anode.

Install the cover disk. Tighten the screws “finger tight” (0.226 N-m, 2 lbf-in). Do not over tighten the screws or you may strip the threads on the plas-tic screws or cover disc.

Install the transducer anode.

WorkHorse ADCP RD Instruments (c) 2005 All rights reserved. Firmware Version: xx.xx > > >AZ >

Zero the Pressure Sensor

Use the AZ-command to zero out the pressure sensor at the deployment site, before putting the WH150 into the water.

Connect and apply power to the system.

Start BBTalk and wakeup the WH150 (press the END key).

Type AZ and press the Return key.

Exit BBTalk.



Where to Find More Information Congratulations! You have completed the WH150 User’s Guide. For more detailed informa-tion, the Operation Manual includes the following sections:

• Introduction. This section is an overview of the WH150 system.

• Installation. Use this section to plan your installation requirements. This sec-tion includes specifications and dimensions for the WH150 (including outline installation drawings).

• Maintenance. This section covers WH150 maintenance. Use this section to make sure the WH150 is ready for a deployment.

• Test. Use this section to test the WH150.

• Troubleshooting. This section includes a system overview and how to trouble-shoot the WH150. If the WH150 fails a built-in test or you cannot communicate with the system, use this section to help locate the problem.

Commands and Output Data Format Guide. This guide contains a reference for all com-mands and output data formats used by the WH150. Use the Command Quick Reference Card to help remember the direct commands used by the WH150.

Technical Support If you have technical problems with your instrument, contact our field service group in any of the following ways:

RD Instruments RD Instruments Europe 9855 Businesspark Ave. 5 Avenue Hector Pintus

San Diego, California 92131 06610 La Gaude, France

(858) 693-1178 +33(0) 492-110-930

FAX (858) 695-1459 +33(0) 492-110-931

Sales - [email protected] [email protected]

Field Service - [email protected] [email protected]

Web: www.rdinstruments.com

After Hours Emergency Support - +1 858-578-0781

mailto:[email protected]




http://www.rdinstruments.com/


P/N 957-6214-00 (April 2005) page 35

NOTES



NOTES

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