Table 7: Connecting To An External Northstar Beacon Receiver - NorthStar 951X Installation Manual

SECTION THREE - Interfacing
Connecting to an
external source of
differential
corrections
Page 52
To connect the cable ends:
1. Plug each end of the cable into the 10-pin ports at the back of each
unit.
2. Turn both units on.
3. Test for the proper cable connection: Press the :$<3765287(6
key; then the ,03257(;3257 menu key; then the ,03257 '$7$
menu key or (;3257 '$7$ menu key; then the 7(67 &200 key.
The message should read REMOTE LINK OK. If so, the hardware con-
nection is now complete.
The 941/951/952 units that are connected are now capable of sharing all
waypoints and routes between them, but remember: Before transferring
waypoints and routes between the two units, you should read the way-
point/route sharing operator instructions. Failure to follow these instruc-
tions may result in the loss of valuable waypoint and route data.
Complete details are provided in the Northstar 951/952 Operator's Man-
ual (part number GM1500C). See Chapter Six, "Creating Waypoints," and
follow the instructions in the section "Moving waypoints and routes
between units."
As described in the Northstar 951/952 Operator's Manual, differential cor-
rections greatly enhance the accuracy of GPS by improving position fixes
to an accuracy of 1-3 meters in most cases. To take advantage of this extra
level of precision, if your 951/952 isn't equipped with an internal differen-
tial receiver you can interface it with an external Northstar model 8400,
8401, or 8800 differential receiver (or other source of differential correc-
tions). Connect the external Northstar differential receiver to the 951/952
RS-232 port as follows.
Table 7: Connecting to an external Northstar beacon
8800 DGPS Sensor
Pin 21 (receive)
Pin 20 (transmit)
Pin 17 (ground)
8400 DGPS Sensor
black (receive)
white (transmit)
orange (ground)
8401 DGPS Sensor
yellow (receive)
blue (transmit)
receiver
952X Interface Connector
red (RS-232 output) #18
green (RS-232 input) #16
tan (RS-232 ground) #17
951/952 Interface Connector
red (RS-232 output) #18
green (RS-232 input) #16
tan (RS-232 ground) #17
951/952 Interface Connector
red (RS-232 output) #18
green (RS-232 input) #16
951/952 INSTALLATION MANUAL Revision B