Setting up the input from the Simrad ITI
This procedure explains how the ME70 can be set up to receive ITI and FS information on a serial port.
Context
Communication with the Simrad ITI (Integrated Trawl Instrumentation) and Simrad FS70 is based on NMEA and proprietary telegrams.
The first step in this procedure explains how to do the physical cabling using the relevant connection. The remaining steps describe how to set up the interface parameters in the ME70 software.
Procedure
1 Connect the relevant serial lines to the ITI system using a serial line.
a Locate a free serial port that can be used for this communication.
b On the serial line socket on the ME70 computer, connect an RS-232 cable as follows
•  Receive signal Rx on pin 2.
•  Transmit signal Tx on pin 3.
•  Common Ground on pin 5.
c On the ITI Transceiver use connector Serial A. Connect the RS-232 cable as follows:
•  Receive signal RXDon pin 2.
•  Transmit signal TXDon pin 3
•  Common Ground on pin 5.
d Ensure that the total length of the serial line cable does not exceed approximately 50 meters.
If a longer cable is required, you may need to use buffer amplifiers on the serial line
2 Select Installation on the Setup menu.
3 Select Trawl.
4 Select communication port (Ethernet or serial)
5 Define the communication parameters.
6 Choose which trawl system you wish to interface with.
7 If the trawl opening and/or distance to trawl information is not automatically available from a trawl syste, set the parameters manually:
•  Trawl opening
•  Distance to trawl
8 Select OK.