Table 2-Interface Connector Pins - NorthStar 941X Reference Manual

200 ppnm
output
Page 114
Description
NMEA PORT 1 INPUT A
NMEA PORT 1 INPUT B
NMEA PORT 1 INPUT GROUND
NMEA PORT 1 OUTPUT A
NMEA PORT 1 OUTPUT B
NMEA PORT 1 OUTPUT GND
NMEA PORT 2 INPUT A
NMEA PORT 2 INPUT B
NMEA PORT 2 INPUT GROUND
NMEA PORT 2 OUTPUT A
NMEA PORT 2 OUTPUT B
NMEA PORT 2 OUTPUT GND
RS-232 GROUND
RS-232 INPUT
RS-232 OUTPUT
EXT. GND / FOIL DRAIN
EXTERNAL SAVE IN
200 PPNM OUT
(Pulses Per Nautical Mile)
Table 2—Interface Connector Pins
The Northstar 941X provides an open-collector transistor output (on pin
14) which is programmed to produce 200 pulses per nautical mile for
those devices requiring this output.
The emitter of the NPN transistor is connected to ground, and the col-
lector connects to the output pin side (see block diagram in Figure 12 on
page 115). The output can sink 100mA and can withstand a maximum
positive voltage of 50 volts.
If the output connects to a highly inductive device, such as a relay, a
spike suppression diode should be connected across the load. Cathode
connects to the power side of the device and anode connects to the out-
put pin side.
The output produces a negative pulse 80ms wide and supports speeds
from zero to 100 knots (clamps at 100kt).
9 — Installation and Interfacing 9 — Installation and Interfacing 9 — Installation and Interfacing 9 — Installation and Interfacing
Wire Color
BROWN
BLUE
WHITE w/BLUE STRIPE
VIOLET
GRAY
BLUE w/WHITE STRIPE
WHITE w/BROWN STRIPE
BROWN w/WHITE STRIPE
WHITE
YELLOW
ORANGE
BLACK
TAN
GREEN
RED
WHITE/ORANGE & SHIELD
ORANGE w/WHITE STRIPE
PINK
Pin
3
1
4
12
7
8
6
2
5
15
11
10
17
16
18
9
13
14
Rev. D