CiDRA Passive Sonar Transmitters - Manual (Page 9)

1.3 Transmitter Menus
1.3.1 Serial Settings
Only the internal RS-232/RS-485 serial port on the transmitter
supports Modbus.
Figure 1 RS-232 / RS-485 Configuration
Figure 2 Baud Rate
Figure 3 Data Bits
Figure 4 Parity
Figure 5 Stop Bits
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