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Comms Example: GPS Receiver--Radio Modem--Radio Modem--CPU

GPS Receiver--Radio Modem--Radio Modem--CPU

Equipment

In use by UNAVCO Boulder Facility -

  • Radio modem: FreeWave DGR115-H

  • Antennas: directional Yagi antennas

  • CPU: UNIX (Sun OS 2.3)

  • Receiver: Trimble 4000SSi/SSE

  • Possible Substitutions (based on site parameters) -

  • Radio modem: Any radio modem which meets suggested minimum requirements as listed on our Radio Modem page.

  • Antennas: omnidirectional antennas

  • CPU: UNAVCO, Boulder currently supports UNIX or LINUX operating systems.

  • NOTE: The use of a repeater and directional vs. omnidirectional antennas depends on the specifics of the site, distances signals need to travel, topography etc. For more information contact UNAVCO Communications Help (supportunavco.org).

    Connections in use by Boulder Facility

  • 1=DB25-9 serial

  • 2=Radio wave

  • 3=Trimble serial 5 or 7 pin null cable (p/n 21295 or 21296)

  • Equipment Configuration in use by Boulder Facility

    Radio modems

  • Baud rate 19200 bps

  • 8-None-1

  • RTS/CTS HW flow control

  • packet size max=8 (144 bytes) min=2 (16 bytes)

  • The transceivers are set to Point to Point Master, Point to Point Repeater, and Point to Point Slave respectively in order from the computer to the receiver.

    Recommended master FreeWave radio modem register settings (in use at KAYT by UNAVCO Boulder Facility)

    Main Menu
    Version 5.39 2-06-98
    Australia Hop Table
    Modem Serial Number xxx-xxxx

    Modem Mode is 6
    Modem Baud is 019200
    Entry to Call is 00
    Radio Parameters

    (0) FreqKey 5
    (1) Max Packet Size 8
    (2) Min Packet Size 2
    (3) Xmit Rate 1
    (4) RF Data Rate 3
    (5) RF Xmit Power 9
    (6) Slave Security 0
    (7) RTS to CTS 0
    (8) Retry Time Out 255

    Recommended FreeWave repeater radio modem register settings (in use at KAYT by UNAVCO Boulder Facility)

    Main Menu
    Version 5.39 2-06-98
    Australia Hop Table
    Modem Serial Number xxx-xxxx

    Modem Mode is 5
    Modem Baud is 019200
    Entry to Call is 00
    Radio Parameters

    (0) FreqKey 5
    (1) Max Packet Size 8
    (2) Min Packet Size 2
    (3) Xmit Rate 1
    (4) RF Data Rate 3
    (5) RF Xmit Power 9
    (6) Slave Security 0
    (7) RTS to CTS 0
    (8) Retry Time Out 255

    Recommended FreeWave slave radio modem register settings (in use at KAYT by UNAVCO Boulder Facility)

    Main Menu
    Version 5.39 2-06-98
    Australia Hop Table
    Modem Serial Number xxx-xxxx

    Modem Mode is 1
    Modem Baud is 019200
    Entry to Call is 01
    Radio Parameters

    (0) FreqKey 5
    (1) Max Packet Size 8
    (2) Min Packet Size 2
    (3) Xmit Rate 1
    (4) RF Data Rate 3
    (5) RF Xmit Power 9
    (6) Slave Security 0
    (7) RTS to CTS 0
    (8) Retry Time Out 255

    Receiver

    Confirm these settings in the receiver’s CONTROL menu:

  • BAUD RATE/FORMAT: I/O port 1 or 2, 19200 bps, 8-None-1, no HW flow control

  • REMOTE PROTOCOL: Data Collector Compatible

  • Download Specifications

    Download software: Trimble Remote Control version 2.201 (15 MAY 1996) for UNIX. All functions of Remote Control software work. Effective receiver file download speed: 4300 bps. [Note: Download rates will vary depending upon site location, local interference, phone line quality, and cellular service.]

    This product is used to perform remote control of 4000SSE/SSi - RC receivers. The programs are available for HP-UX, DOS, SunOS 4.1.x, and Sun Solaris 2.x. The following summarizes the functions and utilities provided by the Remote control programs. Refer to the Trimble Remote Control documentation for details on these programs.

    Function/Utility Program
    Modem link control rconn, rdisconn
    Station/session programming rstation, rsession
    Survey control rsurvey
    Global control rcontrol
    File/download control rfile
    File conversion (r00 to DAT) runpkr00
    Receiver status rstatus
    Receiver reset rreset
    Remote firmware update rupdate
    DAT file naming utility rdatname
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    Comments (1)
    Comment by george on Sat, Sep 24th, 2011 at 10:15 AM
    the best gps site
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    Last modified: Monday, 12-May-2014 00:18:29 UTC