NorthStar 958 Installation Manual page 12

Integrated navigation system
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SECTION TWO: Installing and wiring the 958
Connector name
NMEA (NMEA I/O)
(18-pin port)
GPS (Antenna)
(7-pin RS232 port)
AUX (Auxiliary)
(6-pin auxiliary NMEA
port)
PWR (Power)
VGA (15-pin port)
VIDEO (coaxial)
Electrical power requirements
Power source
The 958 is a negative-ground system that's reverse-polarity protected. Power requirement is 10 VDC
minimum to 36 VDC maximum with at least 16-gauge connecting wire.
Connecting the 958 to ship's power
The 958 ships with a 10-foot power cable that you can lengthen to a maximum of 25 feet:
for a cable length up to 15 feet, the power connections must use 16-gauge
connecting wire or heavier
for a cable length from 15 to 25 feet, use 14-gauge connecting wire or heavier
Page 8
TABLE 2: In t e r f a c e c o n n e c t o r f u n c t i o n s
Connector function(s)
NMEA 1 input/output -------------->
NMEA 2 input/output -------------->
Honk alarm/200 ppnm ------------>
GPS/WAAS input/output --------->
Beacon input/output -------------->
RS-422/NMEA input/output ----->
Power
Video output
Video input
CAUTION!
As a good safety practice, Northstar strongly recommends
that you connect the 958 to a circuit breaker or 20-amp fuse
at the power source (battery).
Connects to...
NMEA devices: radar, autopilot, etc.
Same as NMEA 1
Remote honk alarm (or speed indicator)
2201 or 2301 GPS antenna
- or -
Northstar 2701 beacon receiver (optional)
Northstar 490 echo sounder (optional)
- or -
A second 958 (or to a Northstar 957/952/
951/941) to transfer waypoints and routes
10 to 36 VDC, 50 watts
Remote display
Any NTSC-compatible device
958 Installation Manual, Rev. A1

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