User Guide

Switch Settings

Switch Type Usage and Status Definition

Termination Slide

Select 120 W (default) or 75 W to match the connector type to be

used.

A/B Slide When using an RJ45 connector, select A (default) for trunk or B for

extension use.

When using BNC connectors, make sure that A is selected.

Frame Ground

Short

Short pin J308 is for BNC (TX) outer conductor, and J309 is for BNC (RX) outer

conductor.

Connection of 1 and 2: Open (default)

Connection of 2 and 3: Short

Pin Assignments

RJ45 Connector for Trunk Use

No. Signal Name Level [V] Function

1 RX+ (+) Receive data (+)

2 RX- (-) Receive data (-)

3 Reserved – –

4 TX- (-) Transmit data (-)

5 TX+ (+) Transmit data (+)

6-8 Reserved – –

RJ45 Connector for Extension use

No. Signal Name Level [V] Function

1 TX- (-) Transmit data (-)

2 TX+ (+) Transmit data (+)

3 Reserved – –

4 RX+ (+) Receive data (+)

5 RX- (-) Receive data (-)

6-8 Reserved – –

BNC (coaxial) Connector (TX)

No. Signal Name Level [V] Function

1 TX+ (+) Transmit data (+)

2 TX- (-) Transmit data (-)

90 Installation Manual

2.4.7 E1 Card (KX-TDA0188)