Manual

June 2004 Isis® Sonar User's Manual, Volume 2
36
Appendix D Serial Interfaces
As noted in Chapter 3, ‘Using the File Menu’, Isis User’s Manual, Volume 1,
Isis supports up to 16 serial
com ports, many of which can be used to feed
navigation information to Isis from external devices that can transmit over serial
ports. You can manage the output of an external device’s transmission by writing
your own serial interface string and using it as a template for the device.
This appendix explains:
• the connections you need to hook up your serial input device to your Isis
system
• how the Isis software receives the data from the serial device
• what tokens can be used to make a serial interface template, and
• what a typical template looks like
D.1 Connection
Serial (RS232) input to Isis is done through the 9-pin com connector(s) found on
the back panel of the Isis. The basic Isis system is equipped with a
com1 port.
com2 is reserved for the trackball. Additional com ports are available as options.
The
com ports are female IBM AT DB-9 serial connectors. Triton Elics ships
them with the pinouts shown in Table D-1. If your Nav system pinouts differ from
these defaults, you may want to write them in here.
Table D-1. Isis pinouts for COM1 serial port
Isis uses these pins for these functions Your Nav System uses
Pin 1 <---------------------- Carrier Detect ------------ _______________________
*Pin 2 <--------------------- Receive Data ------------- _______________________
*Pin 3 ----------------------- Transmit Data -----------> _______________________
Pin 4 ------------------------ Data Terminal Ready -> _______________________
*Pin 5 ----------------------- Ground --------------------- _______________________
Pin 6 <---------------------- Data Set Ready ---------- _______________________
Appendix D: Serial Interfaces