The _NotUsed_ 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 _NotUsed_. Each IO Module in the _NotUsed_ comprises an analog input module, a digital output module and a solid state relay module.
Pin |
Signal |
Signal description |
Screen(Green)
|
Screen |
Cable screen |
Input |
RTT |
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 |
Signal ground |
Output |
Trigger Out |
This signal is transmitted to the system that needs to be synchronized. Trigger Out allows the system to transmit ("ping"). |
|
A |
Local connection on the Processor Unit |
|
B |
Connections on the terminal block in the Trigger Unit (From left) |
Unless otherwise specified, this cable must be provided by the installation shipyard.
|
A |
Input (Ready to Transmit (RTT)) |
|
D |
Screen (Cable screen) (Green) |
|
E |
Make the connections here. |
|
F |
Channels (From left) The default version of the Trigger Unit has 12 channels to control up to 12 hydroacoustic systems.
|
Minimum cable requirements
|
• |
Conductors: 2 x 2 x 0.5 mm2 |
|
• |
Screen: Overall braided |
|
• |
Maximum outer diameter: Defined by the plugs and/or the cable gland |
If you need to install a very long cable, increase the cross section.