CDM-Qx Satellite Modem

Revision 5

External Connections

MN/CDMQx.IOM

Note: The European EMC Directive (EN55022, EN50082-1) requires using properly shielded cables for DATA I/O.

4.4Chassis Connections

4.4.1USB Port

This port is used to reflash firmware.

For continued operator safety, always replace the fuses with the correct type and rating.

IMPORTANT

4.4.2M&C 10/100BaseT Connector

The M&C 10/100BaseT connector is an 8-pin RJ-45 10/100BaseT Ethernet port providing access to the modem’s management functions.

4.4.3485/232 Connector

The 485/232 connectors are a 9-pin 'D' type male (DB9-M). Access is provided to remote control ports of the modem, using both RS-232 and RS-485.

Table 4-2. Remote Control Interface Connector Pin Assignments

Pin #

Description

Direction

1

Ground

 

2

RS-232 TX Data

Out

3

RS-232 RX Data

In

4

Reserved - do not connect to this pin

 

5

Ground

 

6

RS-485 RX Data B *

In

7

RS-485 RX Data A *

In

8

RS-485 TX Data B

Out

9

RS-485 TX Data A

Out

*Use for 2-wire RS-485 operation

4–7

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Mocomtech CDM-QX operation manual Chassis Connections USB Port, 2 M&C 10/100BaseT Connector, 3 485/232 Connector