D.8 Towfish - Klein 5000 SERIES Operation And Maintenance Manual

On the CPU board,
• CPU, BFL, SCSI BUSY, PIB BUSY will all light.
• SCSI BUSY, PIB BUSY will go out.
• CPU light will blink off and then come back on.
• CPU, BFL will both go off and then the CPU will then come back on and
On the Demultiplexer Board,
• LOCK LOSS light be off.
• ERROR light will be off.
The boot process sequence will take about 45 seconds. Then on the CPU
board the CPU and PCI lights will pulse with the ping rate, and on the DSP
board the VME light will also pulse at the towfish ping rate. Lights A, B, C
will almost be constantly lit.
Make sure LOCK LOSS and ERROR lights on the Demultiplexer board are off.
This then adds the tow cable assembly and towfish into the test equation.
The boot process sequence should be monitored with an external terminal or with
Windows default terminal HyperTerminal. See "TPU LAN Configuration Setup"
on page D-24.
If the LOCK LOSS and ERROR lights do not go off on the first try, turn the TPU
off and back on. If the LOCK LOSS and ERROR LIGHTS are still on, check for a
towfish fuse failure or cable assembly problems; for example: miswire, open,
using too long a cable, using wrong type of cable, or a failure in the towfish.

D.8 Towfish

The towfish with the standard transducer configuration is shown in Figure D-11,
and with the bathymetry transducer configuration in Figure D-12.
stay on for about 12 seconds and then go off, then come back on again.
Figure D-11:
Towfish with Standard Transducer Configuration
D-39
Towfish