Data (J3); Bal (J4) - Comtech EF Data DMD50 Installation And Operation Manual

DMD50 Universal Satellite Modem
5.15.2 8K DATA (J3)
The 8K Data Port allows for communications between Earth Stations. It is a 15-Pin Female "D"
Connector that complies with IESS 308. Refer to Table 5-20 for pinouts.
Table 5-20. 8K DATA Port 15-Pin Female "D" Connector (J3)
Pin No.
5.15.3 G.703 BAL (J4)
The G.703 Interface Port (Balanced) is a 15-Pin Female "D" Connector. Refer to Table 5-21 for
pinouts.
Table 5-21. G.703 BAL Port 15-Pin Female "D" Connector (J4)
Pin
No.
1
2
3
4
5
6
7
8
9
10
MN-DMD50– Revision 3
Signal Name
1 Receive Octet-B
2 Receive Clock-B
3 Receive Data-B
4 No Connection
5 No Connection
6 Transmit Data-A
7 Transmit Clock-A
8 Transmit Octet-A
9 Receive Octet-A
10 Receive Clock-A
11 Receive Data-A
12 Ground
13 Transmit Data-B
14 Transmit Clock-B
15 Transmit Octet-B
Signal Name
Send Data (-)
Ground
Receive Data A (-)
Ground
Drop Data Out (+)
Insert Data In (+) EXC
(+)
External Clock A (-)
External Clock B (+)
Send Data (+)
No Connection
Signal Direction
ESCRXO-B Output
ESCRXC-B Output
ESCRXD-B Output
NC
NC
ESCTXD-A Input
ESCTXC-A Output
ESCTXO-A Output
ESCRXO-A Output
ESCRXC-A Output
ESCRXD-A Output
GND
ESCTXD-B Input
ESCTXC-B Output
ESCTXO-B Output
Signal Direction
SD-A Input
GND
RD-A Output
GND
DDO-B Output
IDI-B Input
BAL EXC-
Input
A
BAL EXC-
Input
B
SD-B Input
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User Interfaces
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5–20