High speed bus (hsb), connector j3, Summary fault output (relay), connector p1, Hsb), c – Comtech EF Data DT-4500 Series User Manual
Page 40: Relay), c
DT4500 Series Down Converters
MN/DT4500.IOM
Installation
Revision 1
22
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 are contained in Table 10. 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 10. 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 DB9F connector. The pin-out
specifications are contained in Table 11. The mating connector is a DB9M.
Table 11. 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