Comtech EF Data QAM256 User Manual
Page 38
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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
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