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DMD50 Universal Satellite Modem
5.8
K 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 5-9 for pinouts.
Table 5-9. 8K DATA Port 15-Pin Female "D" Connector (J3)
5.9
G.703 BAL (J4)
The G.703 Interface Port (Balanced) is a 15-Pin Female "D" Connector. Refer to Table 5-10 for
pinouts.
Table 5-10. G.703 BAL Port 15-Pin Female "D" Connector (J4)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
MN-DMD50 Revision 4
Pin No.
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 ESCTXC-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
Receive Data B (+)
Drop Data Out (-)
Insert Data In (-) EXC (-)
Mod Fault
Demod Fault
Signal
Direction
ESCRXO-B
Output
ESCRXC-B
Output
ESCRXD-B
Output
NC
---
NC
---
ESCTXD-A
Input
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
GND
RD-A
Output
GND
DDO-B
Output
IDI-B
BAL EXC-A
BAL EXC-B
SD-B
---
RD-B
Output
DDO-A
Output
IDI-A
MOD-FLT
Open Collector Output
DMD-FLT
Open Collector Output
Rear Panel Interfaces
Input
---
---
Input
Input
Input
Input
---
Input
5–9
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