SkyTrac Systems Ltd.
Document Rev. 02.010 ISAT-100-OPD-SOI Page 14 of 26
Restricted Proprietary and Confidential Information
Pin M - Digital Input #4 - Voltage Seeking
A positive input between 5V and 28V, when applied to pin M, will produce a digital
logic high.
Pin N - Digital Input #5 -Ground Seeking (Squat/Collective)
Grounding pin N will produce a digital logic high. The default configuration uses pin
N to monitor the aircraft’s squat switch.
Pin P - Digital Input #6 - Voltage Seeking (Engine on/off)
A positive input between 5V and 28V, when applied to pin P, will produce a digital
logic high. The default configuration uses pin P to monitor the aircraft’s engine
(on/off).
Pin R - Digital Input #7 - Ground Seeking (Emergency)
Grounding pin R will produce a digital logic high. The default configuration uses pin R
to monitor an emergency or panic switch.
Pin S- Digital Output #1 –Current Sinking
The default use for Digital output #1 is to indicate a message in the pilot’s inbox. This
output has been configured as a sinking output and can sink up to 200mA at 30VDC.
Pin T - Digital Output #2 –Current Sinking
The default use for Digital output #2 is to indicate an overdue position report. This
output has been configured as a sinking output and can sink up to 200mA at 30VDC.
Pin U – Digital Output #3 - Current Sinking
Pin U is a sinking digital output. This output has been configured to sink up to 200mA
at 30VDC.
Pin V - Differential GPS Input
Pin V is an RS-232 Differential GPS (DGPS) input.
The document reference is online, please check the correspondence between the online documentation and the printed version.
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