Section 8 - Input/output configurations
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05/01/97 REV H
•
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.
8.3 Standard configurations
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
The port connections of each of these standard configurations are
detailed throughout Section 8.4.
8.4 Configuration details
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
Sensor
Configuration
#
Configuration
pin #24
Configuration
pin #11
Configuration
pin #23
8900 with internal BDM feeding
GPS receiver
7
Open
Open
Open
8900 with external SC-104 input
feeding GPS receiver
6
Open
Open
GND
8800 (BDM only)
5
Open
GND
Open
8900 with time mark output
4
Open
GND
GND
8700 (GPS only)
3
GND
Open
Open
Not used
2
GND
Open
GND
Not used
1
GND
GND
Open
Factory test
0
GND
GND
GND
Summary of Contents for 8700
Page 2: ......
Page 10: ......
Page 16: ...Section 2 Introduction PAGE 6 05 01 97 REV H ...
Page 20: ...Section 3 Packaging PAGE 10 05 01 97 REV H ...
Page 32: ...Section 6 GPS beacon combination receivers PAGE 22 05 01 97 REV H ...
Page 46: ...Section 8 Input output configurations PAGE 36 05 01 97 REV H ...
Page 52: ...Section 9 Connector pinouts PAGE 42 05 01 97 REV H ...
Page 76: ...Section 12 8X00 engine monitor program PAGE 66 05 01 97 REV H ...
Page 78: ...Section 13 Glossary PAGE 68 05 01 97 REV H ...
Page 80: ...Section 14 Abbreviations and initialisms PAGE 70 05 01 97 REV H ...
Page 85: ...Index 05 01 97 REV H PAGE 75 ...