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RT423 - Wireless UHF Transceiver
User's Guide & Operating Manual
REV. X1 - 25 Nov 2003
Authored by Guru Mujumdar
Prepared by Steve Jones
http://www.avalonrf.com/
Avalon RF, Inc. 344 Coogan Way El Cajon, CA 92020
Phone: (619) 401-1969 Fax: (619) 401-1971 Email: sales@avalonrf.com
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AVALON RF, INC. Page ii RT423 Users Guide & Operating Manual Table of Contents 1. General .................................................................................................1 Figure A RT423 Series Controls and Connectors..............................2 Video.....................................................................................................3 RF Output .............................................................................................3 2. Specifications.
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AVALON RF, INC. Page 1 RT423 Users Guide & Operating Manual 1. General The RT423 rugged RF transceivers are intended for use in short range wireless data transmission for control & monitoring applications. The RF output power is approx. 250mW. The RT423 works as a pair. It is a Wireless UHF Data Transceiver that will transport RS485 (or RS232C with an external adaptor) data in either direction. The wireless link is Half-Duplex, meaning it can only transmit or receive at a given time. The defaul
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AVALON RF, INC. Page 2 RT423 Users Guide & Operating Manual Top View 1 Antenna - MCX 2 Power On/Off Bottom View 3 Power/Data Input Figure A RT423 Series Controls and Connectors
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AVALON RF, INC. Page 3 RT423 Users Guide & Operating Manual 1.1 Data The data interface is a RS485-2 wire interface. It is half duplex at the default factory setting of 9600 baud, 8 data bits, 1 stop bit. 1.2 RF Output The RT423 has a 50 Ohm RF output through a MCX jack. An antenna is included for each unit.
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AVALON RF, INC. Page 4 RT423 Users Guide & Operating Manual 2. Specifications 2.1 User Interface - On/Off Switch. The RT423 transceiver has an on/off switch. This shuts off power to the entire transmitter. 2.2 Setup. Since the RT423 works as a pair, the pair is shipped with the suffix indicating the operating frequency e.g- RT423-650 indicates the unit is programmed for 650 MHz. If you have ordered multiple sets, please ensure the correct pair is used. The user has to connect the antennas, po
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AVALON RF, INC. Page 5 RT423 Users Guide & Operating Manual 2.3.3 RF output to antenna. a) The RF output connector is a 50 Ω (ohm) MCX receptacle. b) The RF output power is approx. 250 mW (transmit). 2.4 Interconnecting. The interface to/from the transmitter is: Power/Data Input. Pin Function Number 1 Power Return (-) 2 RS485 Input B or + 3 RS485 Input A or - 4 Power Input Figure B Power/Data
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AVALON RF, INC. Page 6 RT423 Users Guide & Operating Manual 2.5 Mechanical 2.5.1 Mounting. Mounting can be done in one of the following methods: a) Clamping. Clamping (or hard mounting) is the recommended method and the only method of mounting in all fixed installations or when operating from >10V. Clamping is also the preferred method of mounting in mobile installations where most electrical interfaces are used. b) Clip on. Avalon RF offers a clip on kit. This method is acceptable when operati
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AVALON RF, INC. Page 7 RT423 Users Guide & Operating Manual 2.5.2 Mechanical Data. a) Size 2.37 x 1.68 x 0.97 (see Figure D) 60mm x 43mm x 25mm b) Weight <5.6 oz. <158 gram c) Shipping weight <32 oz. <900 gram Figure C RT423 Mechanical Outline
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AVALON RF, INC. Page 8 RT423 Users Guide & Operating Manual 2.6 Environmental Conditions. The RT423 is designed to meet the following environmental conditions: 2.6.1 Operating temperature -4° to 122° F -20° to 50° C 2.6.2 Storage temperature -13° to 150° F -25° to 65° C 2.6.3 Vibration 1.5G, from 10Hz to 2KHz, sine wave, 3 axis 2.6.4 Shock 15G, 25msec, half sine wave, three axis 2.6.5 Humidity 5 to 95%, non-condensing 2.6.6 Inclination Any 2.6.7 Altitude -1500 feet to 15,000 feet -450 meter to
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AVALON RF, INC. Page 9 RT423 Users Guide & Operating Manual 3. Operating the transceiver. Before applying power, make sure all connectors and all antennas are hooked up. NOTE The transmitter will not transmit unless it has an antenna. 3.1 The transmitter has only 1 operator control and no indicators: a) On/Off The unit has a on/off switch for power. The on position is marked.
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AVALON RF, INC. Page 10 RT423 Users Guide & Operating Manual 4. Ordering information 4.1 Base model. RT423- xxx The user may order this set with a allocated frequency by specifically requesting it or the unit will be shipped with a frequency in the ISM band. All units come with the following standard accessories: 4.1.1 Omni directional ¼ wavelength whip antenna 4.1.2 A 3-foot power cord with flying leads to connect to a customer specific battery pack and flying leads for the RS485 data. 4.1.3 U
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AVALON RF, INC. Page 11 RT423 Users Guide & Operating Manual 4.2 Options. 4.2.1 Option 41 Alarm inputs (Two) 4.2.2 Option 51 Telemetry Inputs (Three) 4.3 Recommended accessories. 4.3.1 Antennas AX410LP - 10 dBi UHF Log Periodic antenna for receive/transmit for fixed installation or if the direction of the mobile unit will be known. 4.3.2 Cables T.B.D. 4.3.3 Battery packs a) BAT80 14.4V/80WH Li-Ion battery pack with charger and power cable to transceiver. It will run a RT423 for 16 hours.
