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) |
|
A |
Screen (Cable screen) (Green) |
|
B |
Input (Ready to Transmit (RTT)) |
|
E |
Make the connections here. |
Minimum cable requirements
Unless otherwise specified, this cable must be provided by the installation shipyard. If you need to install a very long cable, increase the cross section.
|
• |
Conductors: 2 x 2 x 0.5 mm2 |
|
• |
Screen: Overall braided |
|
• |
Maximum outer diameter: Defined by the plugs and/or the gable gland |