2 auxiliary, j5 – Comtech EF Data SDM-2020 User Manual
Page 143
SDM-2020 Satellite Demodulator
Revision 4
LVDS Data Interface
MN/SDM2020D.IOM
8–7
applications, the polarity of signals may be inverted from the Functional Select:
Configuration: Interface menu.
Table 8-3. DVB Interface Connector Pinout, J4 TX IN
Pin #
Signal Function/Name
Type
Comment
1 Clock
A
I Mod
2 System
GND/REFCLKB
O/GND
Mod,
Jumper selectable
SCT output for Modulator
3
Data 7 A(MSB/Serial)
I
Mod
4
Data 6 A
I
Mod
5
Data 5 A
I
Mod
6
Data 4 A
I
Mod
7
Data 3 A
I
Mod
8
Data 2 A
I
Mod
9
Data 1 A
I
Mod
10
Data 0 A
I
Mod
11
DVALID A
I
Mod, Modulator Ignores
12 SYNC
A
I
Mod
13 Cable
Shield
I
Mod
14 Clock
B
I
Mod
15 System
GND/REFCLKA
O/GND Mod/Demod
Jumper selectable
SCT output for Modulator
16
Data 7 B (MSB/Serial)
I
Mod
17
Data 6 B
I
Mod
18
Data 5 B
I
Mod
19
Data 4 B
I
Mod
20
Data 3 B
I
Mod
21
Data 2 B
I
Mod
22
Data 1 B
I
Mod
23
Data 0 B
I
Mod
24 DVALID
B
I
Mod
25 SYNC
B
I
Mod
8.1.4.2 Auxiliary,
J5
This port provides for other modem-specific signals not otherwise defined on the data
connectors.