Summary of QDR
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Qdr – qtech 900mhz digital radio owner ’s manual.
Page 2: Table Of Contents
Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 2 of 16 table of contents 1.0 document revision history ........................................................................................ 3 1.1 change control ...................................................
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Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 3 of 16 1.0 document revision history rev description date author 1.4 added note to 5.1 relating to non-standard installations oct 2014 rh 1.3 added note for different rs485 cable options (and pinouts) and updated ...
Page 4: 2.0 Introduction
Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 4 of 16 2.0 introduction the qdr is a frequency hopping spread spectrum (fhss) digital radio operating in the 921.5 – 928.0mhz ism band. The qdr is used for connecting serial devices as a wireless link. It can be r...
Page 5: 3.0 Connections
Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 5 of 16 3.0 connections the connections of the qdr are identified below: 3.1 power connector – 2.1mm dc socket centre pin +v. Spare power cables are available, p/n cb-qdr-pwr. Warning – do not use switch mode power...
Page 6: 4.0 Status Indicators
Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 6 of 16 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 re...
Page 7: 5.0 Applications
Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 7 of 16 5.0 applications 5.1 rs232 mode this is used for serial data communications. A typical use of this mode would be: the serial cable is connected from the rs232 port of the qdr to an rs232 port of the rtu. Pi...
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Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 8 of 16 jumper settings for half duplex rs485 (2-wire) refer to section 6 for further details on the jumpers jumper position jp3 in jp4 out jp5 in jp6 in pinout of rs485 port when in half duplex mode qdr xl4 excel ...
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Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 9 of 16 5.3 rs485 - full duplex mode this mode is used for serial data communications where all four signal lines are required. Jumper settings for full duplex rs485 (4-wire) refer to section 6 for further details ...
Page 10: 6.0 Jumper Settings
Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 10 of 16 6.0 jumper settings a list of all jumpers and their positions on the qdr has been provided for reference. Jumper description jp1 isp programming enable jp2 isp programming enable jp3 rs485 120 ohm line ter...
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Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 11 of 16 7.0 configuration parameters the qdr is configured by qtech via the usb port using a desktop application. The available parameters are defined below: parameter options notes radio type 2-wire rs485 4-wire ...
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Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 12 of 16 8.0 important notes and warnings aerial connection the qdr should never be operated without an aerial connected. If the radio transmits without an aerial, the rf power has nowhere to go but back into the r...
Page 13: Troubleshooting
Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 13 of 16 a qdr variant is available which has a reverse polarity rp-sma aerial connector which will allow you to use the existing aerials. Please order p/n pd9119-u/g. Note – the rs485 cable differs depending on wh...
Page 14: 9.0 Specifications
Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 14 of 16 9.0 specifications performance indoor/urban range (2.1dbi dipole antenna): up to 500m outdoor line-of-site range (2.1dbi dipole antenna): up to 5km outdoor line-of-site range (9dbi high gain yagi antenna):...
Page 15: User Notes
Qdr – qtech digital radio – owner’s manual – v1.4 – october 2014 www.Qtech.Co.Nz page 15 of 16 user notes.
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Qtech data systems ltd 12 midas place, middleton, christchurch 8024 po box 9087, tower junction, christchurch 8149 ph: +64 3 366 3713 fx: +64 3 365 2815 admin@qtech.Co.Nz techsupport@qtech.Co.Nz www.Qtech.Co.Nz.