Comtech EF Data QAM256 - Manual (Page 38)

Rear Panel Interfaces QAM256 Digital Video Modulator and Upconverter
5-6 TM077 - Rev. 4.0
Table 5-6. J1 Optional DVB RS-422 Parallel Connection - 25-Pin Female
D-Sub – J3
Pin No. Signal Name Direction
1 Clock + Input
2 System GND Ground
3 D7 + Input
4 D6 + Input
5 D5 + Input
6 D4 + Input
7 D3 + Input
8 D2 + Input
9 D1 + Input
10 D0 + Input
11 DVALID + Input
12 PSYNC + Input
13 Cable Shield Input
14 Clock - Input
15 System GND Ground
16 D7 - Input
17 D6 - Input
18 D5 - Input
19 D4 - Input
20 D3 - Input
21 D2 - Input
22 D1 - Input
23 D0 - Input
24 DVALID - Input
25 SYNC - Input