Comtech EF Data HPCST-5000 - Manual (Page 82)

Single Thread System Installation High-Power TWTA Satellite Terminals
2–36 Rev.1
2.4.2.2 ODU Monitor and Control (J2)
The discrete signal interface is defined with an M&C connection as described below in
Table 2-7. The pinouts are for the 25-pin D type female connector.
Table Chapter 2-7. M&C Connector Pinouts
Type Pin # Function
Control Commands
(All circuits are active low outputs)
24
6
9
21
23
AC Power ON
High Voltage Enable
Heater Standby
Fault Reset
Control Common (TWT GND)
Status Indicators, Digital Inputs 1
3
7
8
10
12
15
16
17
18
20
Helix/Arc Fault Latched
Helix/Arc/Fault
Heater Timer Complete
TWT Temp Fault
High Voltage ON
Fan ON
High Voltage Fault
Fan ON High
Summary Fault
Fan Lock
Status RTN (HPC GND)
Status Monitors, Analog Inputs 25
4
11
14
Reserved
Helix Current
High Voltage Monitor
TWT Temperature
Input Voltage (Power ON Indicator)
Input Voltage (from TWT) 5
19
13
22
+15 VDC (100 mA max.)
+24 VDC (100 mA max.)
VDC/Analog RTN (TWT GND)
N/A