905U-D

905U-D

Capable of high speed communications with serial devices, the ELPRO 905U-D can communicate using either transparent broadcast mode or a controlled addressed mode.
Both offer node to node, node to multi-node and repeatability for greater range.
Integrated forward error correction maximizes bit error rate providing greater transmission reliability and configurable DTR controlled low power mode on the RS232 port aids reduction of overall power consumption.
The modem is hazardous area approved delivering strong resistance in harsh industrial environments.

Description

The ELPRO 905U-D Wireless Serial Modem is a robust, license-free serial transceiver capable of long range communications to 32km/20mile.

Operating at 900MHz and up to 1W, the ELPRO 905U-D provides high-speed RS232 and RS485 connectivity up to 115kbps, which provides robust and secure two-way wireless serial communications in challenging environments typical of industrial monitoring and control applications.

  • Capable of high speed communications with serial devices, the ELPRO 905U-D can communicate using either transparent broadcast mode or a controlled addressed mode.
  • Both offer node to node, node to multi-node and repeatability for greater range.
  • Integrated forward error correction maximizes bit error rate providing greater transmission reliability and configurable DTR controlled low power mode on the RS232 port aids reduction of overall power consumption.
  • The modem is hazardous area approved delivering strong resistance in harsh industrial environments.

Capabilities

  • 902 – 928MHz Frequency up to 1W RF Power
  • Frequency Hopping Spread Spectrum to 115.2kbps
  • 50 x 250kHz Channel Spacing
  • High Speed RS232 and RS485 Data Rate to 115kbps
  • Transparent/Simultaneous Broadcast and Addressable Device Messaging
  • LOS Distance to 32kms (20miles) in a Single Hop – Unlimited Repeatability
  • Low Power Consumption Mode with DTR Control
  • Forward Error Correction Communications (CRC Error Checking with ARQ)
  • Simplistic Configuration for AT Hayes Commands or Windows Software
  • Helpful Diagnostics Include Radio Signal Strength and BER Indication
  • Tech Specs

    SPECIFICATION DESCRIPTION
    GENERAL
    EMC specification

    FCC Part 15

    EN 300 683

    AS 3548

    89/336/EEC

    Radio specification

    FCC Part 15.427 (902 – 928MHz, 1W)

    AS 4268.2 (915 – 928MHz, 1W)

    RFS29 NZ (920 – 928MHz, 1W)

    Housing 32 MB
    Packet buffer 110 x 185 x 30mm DIN rail mount (Powder-coated, extruded
    aluminium)
    Terminal blocks Removable (Suitable for 12 gauge (2.5sqmm) conductors)
    LED indication OK operation, Serial RX and TX, Radio RX and TX, DCD active
    Operating Temperature

    -40 to +55 degrees C (Full performance)

    -40 to +70 degrees C (Typical performance)

    0 – 99% RH non-condensing

    POWER SUPPLY
    Connectors
    Nominal supply

    10 to 30VDC (Overvoltage and reverse voltage protected)

    13 to 24VAC

    Current Drain @ 12VDC

    80 mA quiescent (During transmission 350mA)

    20mA (low power mode)

    Current Drain @ 24VDC

    50 mA quiescent (During transmission 250mA)

    15mA (low power mode)

    RADIO TRANSCEIVER
    Spread-spectrum, frequency hopping 100 channels, 16 hop sets (902 – 928 MHz)
    Transmit power 1W (USA/Canada 4W ERP; Australia / NZ 1W ERP)
    Signal detect / RSSI -120 to -60 dBm
    Expected line-of-sight range

    USA / Canada (20+ miles)

    Australia / NZ (20+ km)

    Range based on 19200 baud. At 57600 baud, expected range is 60%,
    at 115200 baud, expected range is 30%. (depending on local conditions
    Range may be extended using intermediate modules as repeaters)

    Antenna Connector Female SMA coaxial
    SERIAL PORTS
    RS232 Port DB9 female DCE (RTS/CTS/DTR/DCD hardware
    signals provided)
    RS485 Port 2 pin terminal block (Max distance 4000’ / 1.2 km)
    Data rate (bit/sec) – configurable 1200, 2400, 4800, 9600, 14400, 19200, 38400, 57600, 76800, 115200
    Byte format 7 or 8 data bits (Stop/start/parity bits configurable)
    SYSTEM PARAMETERS
    Operating modes

    Transparent mode (Broadcast system)

    Controlled mode (Addressed communications with acknowledged)

    System address Configurable 8 bit
    User Configuration (Hayes commands from host device. Or via on-board DIP switches)
    DIAGNOSTICS

    LED’s (OK, DCD, Radio and Serial RX/TX)

    Low signal receive led CTS/RTS indication

    RSSI measurement in dBm (BER test)

    Brochure/User Manual

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