Section 8 - Input/output configurations
8.3 Standard configurations
Sensor
8900 with internal BDM feeding
GPS receiver
8900 with external SC-104 input
feeding GPS receiver
8800 (BDM only)
8900 with time mark output
8700 (GPS only)
Not used
Not used
Factory test
8.4 Configuration details
PAGE 30
BDM monitor output
•
GPS time mark output
•
GPS primary input
•
GPS auxiliary input
•
BDM control input
•
BDM monitor input
•
Echo port
•
These signals may be internally connected to the sensor's I/O ports in var-
ious ways. The most common configurations are programmed into
Northstar's standard sensors. Custom configurations may be available in
OEM quantities.
Pins 11, 23, and 24 on the 25-pin data/power connectors let you select a
configuration (each pin is pulled up internally and should be either left
unconnected or connected to ground). The eight standard configurations
are shown in Table 7 below, which lists one to three standard configura-
tions recommended for each sensor type (these configurations relate to
Northstar PAL Version 2.6. If problems occur, contact Northstar customer
service for assistance):
Table 7: Standard configurations
Configuration
#
7
6
5
4
3
2
1
0
The port connections of each of these standard configurations are
detailed throughout Section 8.4.
Configurations 7 and 6 are used with the 8900, which contains both a
GPS sensor and a BDM receiver. In configuration 7, the SC-104 output
from the BDM receiver passes directly to the auxiliary input of the GPS
Configuration
Configuration
pin #24
pin #11
Open
Open
Open
Open
Open
GND
Open
GND
GND
Open
GND
Open
GND
GND
GND
GND
Configuration
pin #23
Open
GND
Open
GND
Open
GND
Open
GND
05/01/97 REV H
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