L3 comminications SERIES 5000, Operation And Maintenance Manual

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Towfish
D-53
$Cmpcal=d:
Disables compass multi-point calibration mode.
$Cgo:
Starts compass.
$TA1:
Turn on altimeter transmitter.
$TW0:
Turn on transducer transmitter.
Turn the towfish off and then on again and check that the compass is working.
D.8.18 Series 5000 Sonar System Towfish Commands
The following are multiplexer commands:
$MTd:
Resets the TVG FIFO
$MTd:
Write the hex value d into the TVG FIFO, 0 to F with 7 as
the default. Increasing the value increases the gain by 3 dB
for each increment.
The following are transmitter commands:
$TWd:
Select transmit waveform d where d is
0 - 50 µs chirp.
1 - 100 µs chirp.
2 - 200 µs chirp.
3 - 200 µsec two-tone hop.
4 - 50 µs chirp with rear transmitter off.
5 - 100 µs chirp with rear transmitter off.
6 - 200 µs chirp with rear transmitter off.
7 - 200 µs two-tone hop with rear transmitter off.
8 - 50 µs chirp with front and rear transmitter off.
9 - 100 µs chirp with front and rear transmitter off.
A - 200 µs chirp with front and rear transmitter off.
B - 200 µs two-tone hop with front and rear transmitter off.
C - 50 µs CW.
D - 500 µs chirp.
E - Ripple fire.
F - All sonar transmitters off.
Other selected commands are the following:
$TAd :
Turns altimeter off (d = 0). Turns altimeter on (d = 1).
$TRd :
Selects the responder divisor where divisor = 2^d, and
F = off.