NorthStar 941x 사용자 설명서

Page 114

9 — Installation and Interfacing

9 — Installation and Interfacing

9 — Installation and Interfacing

9 — Installation and Interfacing

Rev.  D

NMEA PORT 1 INPUT A

BROWN

3

NMEA PORT 1 INPUT B

BLUE

1

NMEA PORT 1 INPUT GROUND

WHITE w/BLUE STRIPE

4

NMEA PORT 1 OUTPUT A

VIOLET

12

NMEA PORT 1 OUTPUT B

GRAY

7

NMEA PORT 1 OUTPUT GND

BLUE w/WHITE STRIPE

8

NMEA PORT 2 INPUT A

WHITE w/BROWN STRIPE

6

NMEA PORT 2 INPUT B

BROWN w/WHITE STRIPE

2

NMEA PORT 2 INPUT GROUND

WHITE

5

NMEA PORT 2 OUTPUT A

YELLOW

15

NMEA PORT 2 OUTPUT B

ORANGE

11

NMEA PORT 2 OUTPUT GND

BLACK

10

RS-232 GROUND

TAN

17

RS-232 INPUT

GREEN

16

RS-232 OUTPUT

RED

18

EXT. GND / FOIL DRAIN

WHITE/ORANGE & SHIELD

9

EXTERNAL SAVE IN

ORANGE w/WHITE STRIPE

13

200 PPNM OUT
(Pulses Per Nautical Mile)

PINK

14

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).

200 ppnm

output