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SECTION TWO: Installing and wiring the 957
Page 14 957 Installation Manual, Revision C1
Understanding the
interface connectors
All of the 957’s interface connectors are shown in Figure 6:
”Interface connectors (back of 957),” below. The function of
these connectors is described in Table 1, below.
Figure 6: Interface connectors (back of 957)
NMEA connector VIDEO connector
Power connector
GPS connector
AUX connector
VGA connector
Table 1: Interface connector functions
Connector name Connector function(s) Connects to...
NMEA (NMEA I/O)
(18-pin port)
NMEA 1 input/output -------------->
NMEA 2 input/output -------------->
Honk alarm/200 ppnm ------------>
NMEA devices: autopilots, etc.
same as NMEA 1
Remote honk alarm (or speed indicator)
GPS (Antenna)
(7-pin RS232 port)
GPS/WAAS input/output --------->
Beacon input/output -------------->
2201 antenna
- or -
Northstar 2701 beacon receiver (optional)