Manual Number 9018205 Revision F, April 1, 2021
12
Pin
Number
Signal
1
Ground
2
Power Input (DC)
3
Flight Timer Input
4
RTD Temp A
5
Alarm Out
6
Current Temp Return
7
Current Temp Power
8
Aircraft Lighting Bus (DC)
9
RTD Temp B
Table 3.3
Figure 3.2
Power Input Connector Pinout (Type 2)
CH93 Rear View (Type 2)
Harness Verification
Failure to install aircraft power and ground wires in the proper mating connector locations
could damage the unit.
Once the cable harness is prepared, prior to connecting the CH93, activate the aircraft power
bus and use a multimeter to verify that aircraft power and ground are supplied with
appropriate voltage on the proper pins within the mating harness.
The CH93 must not be installed with input terminals reversed as this could damage the unit.
Verify the correct polarity of any harness or equipment prior to connecting to the CH93.
WARNING
Replaceable
Coin Cell (BR2032) Cover
Pin 1