L3 comminications SERIES 5000, Operation And Maintenance Manual

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C-20
APPENDIX C TPU Software Interface and Control
Series 5000 Sonar System Operations and Maintenance Manual P/N 11210060, Rev. 13.0
Likewise for the 3000 System commands may be sent to an auxiliary sensor
connected to the towfish auxiliary RS-232 port. The format of the commands is
obviously specific to the sensor used. To issue a command to an auxiliary sensor
the format would be $A<command><CR><LF>.
C.6.6 System 5900 MUX Commands
The following commands are available to control the System 5900 Multiplexer:
$MTd:
Sets the TVG page where d = 0 – F in hexadecimal format.
The default page is 7. Increasing the value increases the
gain by 3 dB for each increment. Conversely decreasing this
value decreases the gain by 3 dB.
$MLd:
Sets the uplink pre-emphasis amount where d = 0 – 7. See
the ‘PREEMPHASIS’ description in the startup script
above for more information. This command can be used to
fine tune the uplink for various cables. When the
performance is optimized then this value can be
incorporated into the startup script to initialize the pre-
emphasis on boot-up.
$MGd:
Sets the uplink gain where d = 0 – 3. See the ‘LBOGAIN’
description in the startup script above for more information.
This command can be used to fine tune the uplink for
various cables. When the performance is optimized then this
value can be incorporated into the startup script to initialize
the pre-emphasis on boot-up.
$MSd:
Sets the uplink source where d = 0 selects the normal
coaxial drive. Setting this to ‘1’ selects the laser as the
source and deactivates the metallic uplink. See the
‘UPLINKSOURCE’ description in the startup script above
for more information.
$MXd:
Sets the trigger mask register where d is the bit mask in hex.
The bits are defined as: bit0: transmit trigger, bit1: aux
trigger 1, bit2: aux trigger2. For normal operation it is
sufficient to simply send $MXF.