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Introduction
The RM868500A radio modem acts as a wireless serial cable replacement and can wirelessly connect various devices
together for a large range of applications. The RM868500A radio modems operate in the license free SRD G3 Band
(869.525MHz) band and is capable of achieving long range line-of-sight communications up to 40km (w/ 2.0dBi dipole
antenna). With its stylish aluminum extruded enclosure and industrial temperature grade electronics makes the unit
perfect for industrial automation/SCADA systems and remote data acquisition. The RM868500A also includes 128 bit
AES encryption technology for secure wireless data transfer.
The RM868500A can operate in a point to point or point to multipoint configuration.
Features
•
Transparent wireless link. The modem acts as a serial cable replacement
•
License free operation in the SRD G3 Band (869.525mHz)*
•
Long Range – indoor/urban (+-550m/1800ft), outdoor/line-of-sight (+-40km/25 miles). With a 2.0dBi dipole
antenna
•
Stylish anodized aluminum extruded enclosure with mounting flanges
•
8-30VDC switch mode power supply with built in 33V over voltage and reverse voltage protection
•
6W maximum power consumption
•
Programmable transmit power of up to 500mW (20dBm) EIRP with a 2.0dBi antenna
•
Supports point to point and point to multipoint configuration
•
Easy interfacing via snap in connector
•
Built in LED's for power, transmit, receive and signal strength indication
•
RSSI (received signal strength indicator) to give optimum antenna placement
•
RPSMA (reverse polarity SMA) 50 ohm antenna connection allows for remote location of antenna
•
Available in RS232, RS485 and 4-wire RS422, includes a selectable built in line termination resistor
(RS485/RS422 model only)
•
Serial interface data rate of 1200 to 115200 bps
•
Industrial operating temperature range (-40°C to 85°C)
•
Uses an agency approved radio module (Europe (CE)) *
•
Free configuration software
*Maximum transmit power output levels and local radio frequency regulator bodies must be obeyed in the country of
operation.
RM868500A
868MHz 500mW RS232 / RS485 / RS422 Radio
Modem
Operating Manual – English 1.01
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Table of Contents
Related Manuals for Infiniteq RM868500A
Summary of Contents for Infiniteq RM868500A
- Page 1 The RM868500A radio modem acts as a wireless serial cable replacement and can wirelessly connect various devices together for a large range of applications. The RM868500A radio modems operate in the license free SRD G3 Band (869.525MHz) band and is capable of achieving long range line-of-sight communications up to 40km (w/ 2.0dBi dipole antenna).
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Page 2: Installation
RM868500A Operating Manual Page 2 1 Installation Connect the RM868500A unit as indicated in the following diagram. Use of an external 1A fuse is recommended. Pin 4: RF Transmit LED RS232 CTS (OUTPUT) (Orange) RF Receive LED RS422 TXD+ (B) -
Page 3: Network Setup
Page 3 1.1 RS485/RS422 Communications (RS485/RS422 Models only) The RM868500A includes an on-board termination resistor which can be selected by linking J1 on the main PCB inside the unit. The termination resistor is 120 Ohms. 1.2 RSSI (Received Signal Strength Indicator) Red LEDS 3 LED’s on: Very strong signal (>30db fade margin) - Page 4 RM868500A Operating Manual Page 4 Point to Point configuration (Broadcast/Unicast Mode) Point to Multipoint configuration (Broadcast Mode)
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Page 5: Dimensional Drawings
Due to the single channel of this band, the duty cycle is regulated to ETSI requirements. The duty cycle of the RM868500A is 10% averaged over the period of 1 hour. Meaning, if the next transmission will push the running average duty cycle over the 10% limit, the module will not transmit until enough time has elapsed to stay under the duty cycle. -
Page 6: Specifications
(RS485/RS422 models only) *Most European countries require that the power output of the RM868500A must not exceed 27dBm. The power level is set using the free configuration software. Italy and Slovak Republic have unique restrictions. Italy: Italy imposes a 25mW (14dBm) maximum limit. (Use LOW for RF power setting). -
Page 7: Agency Certifications
The internal RF Module in the RM868500A has been certified for use in several European countries. Most European countries require that the power output of the RM868500A must not exceed 27dBm. The power level is set using the free configuration software. Italy and Slovak Republic have unique restrictions. - Page 8 RM868500A Operating Manual Page 8...
- Page 9 RM868500A Operating Manual Page 9...
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Page 10: Ordering Information
RM868500A Operating Manual Page 10 6 Ordering Information Please order according to the following code listed below. RS232: RM868500A-RS232 RS485: RM868500A-RS485 RS422: RM868500A-RS422 7 Configuration Software Please use our free configuration software to change Network IDs, destination addresses, RF transmit power levels,... -
Page 11: Warranty
RM868500A Operating Manual Page 11 8 Warranty This product carries a warranty for a period of one year from date of purchase against faulty workmanship or defective materials, provided there is no evidence that the unit has been mishandled or misused. Warranty is limited to the replacement of faulty components and includes the cost of labor.