Kongsberg Simrad MF90, Installation Manual

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476671/B
Simrad TU40 interface to generic RS-232 synchronization input
For transmission synchronization purposes, the Simrad TU40 will interface a generic
RS-232 serial line communication port using the CTS (Clear To Send) and RTS (Request To
Send) signals.
The Trigger Unit provides one output and one input for each hydroacoustic system that
needs to be synchronized. Each system is connected to the IO Module inside the Trigger
Unit. Each IO Module in the Trigger Unit comprises an analog input module, a digital
output module and a solid state relay module.
Pin Signal Trigger Unit Signal description
Screen(Green) Screen A Cable screen
Input RTT B Ready to Transmit: Ready to Transmit
(RTT) is a return signal from the
hydroacoustic system that is synchronized.
The Ready to Transmit (RTT) signal means
that the hydroacoustic system is ready for
the next trigger.
Ground Ground
C
Signal ground
Output Trigger Out
D
This signal is transmitted to the system
that needs to be synchronized. Trigger Out
allows the system to transmit ("ping").
Trigger Unit = Connections on the terminal block in the Trigger Unit
A
Local connection on the computer
B
Connections on the terminal block in the Trigger Unit (From left)
Simrad MF90 Installation Manual