Testing The Towfish - Klein 3000 Series Troubleshooting Manual

SYSTEM 3000 OPERATIONS AND MAINTENANCE MANUAL
Transducer Configuration
4.22

TESTING THE TOWFISH.

Check the telemetry link to the towfish.
Turn the TPU on and check the Carrier Loss and Lock Loss lights. The lights should
stay an for about 45 seconds as the system runs though the boot process, then they
should go off and the towfish should start to ping. If the lights are on or flickering,
there is a problem. Again a telemetry link problem could be one or more of the
following: Towfish fuse failure or cable assembly problems; mis-wire, open, cable
length too long, wrong type of cable, or a failure in the towfish.
Check the transmitters before deployment.
There are two different frequency transmitters, a 100 kHz and a 500 kHz.
To check that the transmitters are working, turn the system on and wait for the system
to boot up. Start SonarPro and set a range of 100 meters. You can place an
oscilloscope probe with the scope tip along the transducer to see the transmit wave
form as in the following image.
L-3 Klein Associates, Inc. TROUBLESHOOTING GUIDE 4-47