Garmin GPS 400W, Installation Manual

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GNS 400W Series Installation Manual Page 4-11
190-00356-08 Rev. G
4.5.2 Annunciators/Switches Electrical Characteristics
4.5.2.1 Annunciators
Pin Name Connector Pin I/O
VLOC ANNUNCIATE P4001 1 Out
GPS ANNUNCIATE P4001 2 Out
WAYPOINT ANNUNCIATE P4001 3 Out
TERMINAL ANNUNCIATE P4001 4 Out
APPROACH ANNUNCIATE P4001 5 Out
MESSAGE ANNUNCIATE P4001 6 Out
OBS ANNUNCIATE P4001 7 Out
SPARE ANNUNCIATE P4001 8 Out
INTEGRITY ANNUNCIATE P4001 9 Out
GPS SELECT [1] P4001 13 Out
ILS/GPS APPROACH P4001 14 Out
[1] The Operation of the GPS SELECT can be configured. Refer to Section 5.3.3.
All outputs sink up to 250 mA when activated.
4.5.2.2 Switch Inputs
Pin Name Connector Pin I/O
OBS MODE SELECT P4001 71 In
CDI SOURCE SELECT P4001 73 In
COM REMOTE RECALL P4001 74 In
DEMO MODE SELECT P4001 75 In
AIR/GROUND P4001 70 In
These inputs are considered active if either the voltage to ground is < 1.9 V or the resistance to ground is
< 375 . These inputs are considered inactive if the voltage to ground is 11-33 VDC.
4.5.2.3 TIME MARK OUT
Pin Name Connector Pin I/O
TIME MARK OUT P4001 16 Out
TIME MARK OUT outputs a 1 ms ± 1 s wide pulse once every 1.0 s ± 2 ms. TIME MARK OUT is a
logic level output, capable of sourcing 1 mA at greater than 3.8 V and sinking 1 mA at less than 0.4 V.
4.5.3 Annunciators/Switches Configuration
Refer to Section 5.3.3 for configuration of the GPS SELECT output and AIR/GROUND input.
4.5.4 Annunciators/Switches Calibration and Checkout
Refer to Section 5.3.9 for the annunciators/switches checkout.
4.5.5 Annunciators/Switches Interconnect
Refer to Appendix H for annunciators/switches interconnect information.