56 OCP 400 Operational Control Panel User’s Guide (v12.0)
Chapter 6 - Connectors
6.2 Communication connectors
6.2.1 Network connector
6.2.2 Serial interface connector (RS-232 or RS-422)
When used with the LDK 4417 base unit (part of the Digital Triax system) the OCP 400 must
be locally powered for correct working of the On Air signalling.
Pin Description
1 Transmit data + (TX+ )
2 Transmit data - (TX-)
3 Receive data+ (RX+)
4 no connection
5 no connection
6 Receive data - (RX-)
7 no connection
8 no connection
Ethernet 10Base-T, 100Base-TX
compliant with IEEE-802.3 (edition
2000)
8-pin standard
RJ-45 ethernet
connector
Pin RS-232 RS-422
1 no connection no connection
2RXD GO_A
3TXD RET_B
4 nDTR reserved
5 DGND or +12 V DGND or +12 V
6 nDSR reserved
7nRTS GO_B
8nCTS RET_A
9 +12 V or DGND +12 V or DGND
Select the connection type for the
serial interface in the OCP setup
menu (refer to ‘Setting up the OCP’
in this user’s guide).
Sub-D connector
9-pin female
(panel view)
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