Comtech EF Data SLM-5650B - Terrestrial Data Connectors; J5 Ethernet Remote Control Connector (RJ-45); P1 Overhead Data Interface Connector (DB-25 M); Table 3-4. P1 Overhead Data Connector (DB-25 M) Pinout

SLM-5650B Satellite Modem
Revision 2
Rear Panel Connectors and Pinouts 3–4 MN-SLM-5650B
3.3 Terrestrial Data Connectors
3.3.1 J5 Ethernet Remote Control Connector (RJ-45)
The J5 Ethernet connection is an 8-pin type 'RJ-45' 10/100Base-T connector. Remote
control of the modem is provided using SNMP, HTTP/HTTPS or Telnet with this port.
3.3.2 P1 Overhead Data Interface Connector (DB-25M)
This is a male Type ‘D’ 25-pin ‘D’ (DB-25M) connector that allows for
connection of the EIA-422, EIA-485 and EIA-232 data interfaces used
with overhead framing. It also supports signaling for tactical applications.
Table 3-4. P1 Overhead Data Connector (DB-25M) Pinout
Pin #
Signal Function
Name
1
EIA-422 Transmit Data “A”, Input
Tx Data A
14
EIA-422 Transmit Data “B”, Input
Tx Data B
2 EIA-422 Transmit Clock “A”, Output Tx Clk A
15 EIA-422 Transmit Clock “B”, Output Tx Clk B
3 EIA-422 Transmit Byte Sync “A”, Output Tx Sync A
16 EIA-422 Transmit Byte Sync “B”, Output Tx Sync B
4 EIA-422 Receive Data “A”, Output Rx Data A
17
EIA-422 Receive Data “B”, Output
Rx Data B
5
EIA-422 Receive Clock “A”, Output
Rx Clk A
18
EIA-422 Receive Clock “B”, Output
Rx Clk B
6 EIA-422 Receive Byte Sync “A”, Output Rx Sync A
19 EIA-422 Receive Byte Sync “B”, Output Rx Sync B
7 Shield Ground
20 EIA-485 Transmit Data “-“ 485 Tx Data -
8 EIA-485 Transmit Data “+” 485 Tx Data +
21
EIA-422 Transmit Handover Sync “A”, Input
THS A
9
EIA-485 Receive Data “-“
485 Rx Data -
22
EIA-485 Receive Data “+”
485 Rx Data +