Alpha Technologies USM2.5 Status Monitor - Manual (Page 7)

7 018-041-C0-002 Rev. B
1. Installation
1.2 Transponder Inputs and Outputs
The following section describes the input and output connections on the transponder. Refer to
the sections indicated below for a brief description and pin-out of the connector.
CPU LED Flashing: Normal operation, P-Code running.
Solid: Initial start-up, R-Code running.
RX LED Data is being recieved from the HEC (Head End Controller).
TX LED Data is being sent to the HEC.
RX TX
GEN
A/B
C/D
G/BATT
TEMP
COM
RF
1
1
1
1
CPU
RESET
Section 1.3
Battery A/B Monitor
Section 1.3
Battery C/D Monitor
Section 1.6
Craft Port
Section 1.4
Generator
Section 1.5
Generator Battery
Section 1.6
Communication
CPU / Serial Port
Activity
Figure 1-2 Input / Output Connections