J3 | Remote Connector, Db-9M; J4 | Mgmt Connector, Rj-45F - Comtech EF Data CDM-750 Installation And Operation Manual

CDM-750 Advanced High-Speed Trunking Modem
Rear Panel Connectors and Pinouts
3.3.3

J3 | REMOTE Connector, DB-9M

The connector pinouts are as follows:
Pin #
1
2
3
4
5
6
7
8
9
* Use for 2-wire EIA-485 operation
3.3.4

J4 | MGMT Connector, RJ-45F

The J4 | MGMT connector is an RJ-45 female auto-sensing, auto-crossover port,
reserved for use as 10/100 Ethernet-based remote management and control (M&C).
The connector pinouts are as follows:
Pin #
1
2
3
4
5
6
7
8
The J3 | REMOTE connector provides the remote control interface via a 9-pin
Type 'D' male connector. It is intended for connection to an M&C computer or
terminal device, and is user selectable for either EIA-232 or EIA-485.
Description
Ground
EIA-232 Transmit Data
EIA-232 Receive Data
Reserved - do not connect to this pin
Ground
EIA-485 Receive Data B *
EIA-485 Receive Data A *
EIA-485 Transmit Data B
EIA-485 Transmit Data A
Description Direction
TRP1+ I/O
TRP1- I/O
TRP2+ I/O
TRP3+ I/O
TRP3- I/O
TRP2- I/O
TRP4+ I/O
TRP4- I/O
3–5
Revision 1
MN-CDM750
Direction
–
Out
In
–
–
In
In
Out
Out