Operating instructions

Rear Panel Interfaces DMD50 Universal Satellite Modem
5-8 TM118 – Rev. 1.1
6 Send Data B SD-B Input
7 Receive Data B RD-B Output
8 Synchronous Data Send Timing A ST-A Input
9 Synchronous Data Receive
Timing A
RT-A Output
5.4.3 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 5-8 for pinouts.
Table 5-8. 8K DATA Port 15-Pin Female “D” Connector (J3)
Pin No. Signal Name Signal Direction
1 Receive Octet-B ESCRXO-B Output
2 Receive Clock-B ESCRXC-B Output
3 Receive Data-B ESCRXD-B Output
4 No Connection NC ---
5 No Connection NC ---
6 Transmit Data-A ESCTXD-A Input
7 Transmit Clock-A ESCTXC-A Output
8 Transmit Octet-A ESCTXO-A Output
9 Receive Octet-A ESCRXO-A Output
10 Receive Clock-A ESCRXC-A Output
11 Receive Data-A ESCRXD-A Output
12 Ground GND ---
13 Transmit Data-B ESCTXD-B Input
14 Transmit Clock-B ESCTXC-B Output
15 Transmit Octet-B ESCTXO-B Output
5.4.4 G.703 BAL (J4)
The G.703 Interface Port (Balanced) is a 15-Pin Female “D” Connector. Refer to Table 5-9 for
pinouts.
Table 5-9. G.703 BAL Port 15-Pin Female “D” Connector (J4)
Pin No. Signal Name Signal Direction
1 Send Data (-) SD-A Input
2 Ground GND ---
3 Receive Data A (-) RD-A Output