Qtech-data-systems QDR Digital 900MHz Radio Uživatelský manuál stáhnout pdf (Strana 6)

QDR – QTech Digital Radio – Owners Manual – v1.3 – August 2012 6

www.qtech.co.nz Tel: 03 3663713

3.5 RS485 Serial Port – RJ12 Socket

This is used to connect to RS485 devices in either half or full duplex modes.

Refer to applications.

Spare RS485 cables are available, P/N CB-QDR-RS485.

Note – The RS485 cable differs depending on whether connecting to a XL4

RTU (RJ12 to RJ12) or another device (RJ12 to RJ10), the respective P/N are

CB-QDR-RS485-XL4 & CB-QDR-RS485.

4.0 Status Indicators

There are three status indicators on the QDR.

Colour Meaning Description

Green Status Indicates radio status

Yellow RxD Received valid (RF) data packet

Orange TxD Transmitted a packet

Notes

RxD LED blinks upon receiving a valid packet. A packet is valid if the Customer-ID

and Site-ID in the received packet are equal to the receiving radios Customer-ID and

Site-ID. The packets must also have a valid checksum.

Status LED issues 6 fast flashes to indicate that the QDR has been reset/repowered.

The Status LED flashes slowly to indicate the QDR processor is running correctly.

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Qtech-data-systems QDR Digital 900MHz Radio Uživatelský manuál Strana 6