Comtech EF Data UT-4579 - Manual (Page 28)

UT4579 X-Band Up Converter MN/UT4579.IOM
Installation Rev. 0
12
2.4.3 H IGH S PEED B US (HSB), C ONNECTOR J3
The High Speed Bus connector, J3, is 25 pin "D" type DB25F connector socket. The pin-
out specifications is contained in Table 6. The mating connector is a DB25M.
Note: This is not a “straight through” cable assembly. Contact Comtech EF Data for detailed
wire drawings when cabling between converters.
Table 6. J3, High Speed Bus Connector Pin-Out
Pin # Description Pin # Description Pin # Description
1 Cntl_12 10 Aux_3 18 Cntl_3
2 Cntl_10 11 Aux_1 19 Cntl_1
3 Cntl_8 12 -Rx/Tx 20 +14V Out
4 Cntl_6 13 GND 21 +14V In
5 Cntl_4 14 Cntl_11 22 GND
6 Cntl_2 15 Cntl_9 23 Aux_2
7 Cntl_In 16 Cntl_7 24 GND
8 +14V Out 17 Cntl_5 25 +Rx/Tx
9 +14V In
2.4.4 S UMMARY F AULT O UTPUT (RELAY), C ONNECTOR P1
The summary fault output connector, P1, is 9 pin "D" type DB9M connector. The pin-
out specifications are contained in Table 7. The mating connector is a DB9F.
Table 7. P1, Summary Fault Connector Pin-Out
Pin # Description
1 Summary Fault NC
2 Summary Fault NO
3
4
5 Ground
6 Summary Fault Com
7 External Fault Input
8
9
Notes: 1 Pin 1 to Pin 6: Fault.
2 Pin 2 to Pin 6: No Fault.
3 Pin 7 to Pin 5: Forced Fault. Typically used with external group delay equalizers