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Javad JLINK Lite User manual

  • Hello! I've reviewed the Configuration Example for the JLink Lite modem, which explains how to set it up for NTRIP to UHF mode. The document details configuring the device with a PC, setting up GPRS for internet access, and configuring UHF for radio transmission to rovers. I'm ready to answer any of your questions about the JLink Lite and its setup process.
  • How does the JLink Lite modem work in NTRIP to UHF mode?
    What settings need to be configured for the UHF radio?
    Where are the GPRS parameters obtained from?
    What information is needed for the NTRIP setup?
    Does the JLink Lite save the settings?
All contents in this manual are copyrighted by JAVAD GNSS.
All rights reserved.The information contained herein may not be used, accessed, copied,
stored, displayed, sold, modified, published, or distributed, or otherwise reproduced without express written
consent from JAVAD GNSS
JLink Lite
in NTRIP to UHF mode
Configuration Example
Version 1.0
Last revised May 14, 2012
2www.javad.com
JLINK LITE IN NTRIP TO UHF
MODE
After configuring the device according this configuration example, it will work as follows: after turning
on the GSM modem is registering in the network and the GPRS is connecting to the Internet. NTRIP
client connects to the NTRIP caster, to receive the corrections. The received corrections are forwarding to
the UHF modem and are transmitting over the air. All UHF modems which are in receive mode and in
coverage range of the transmitter will receive these corrections.
1. Connect JLink Lite to PC’s COM port using serial cable.
2. Run ModemVU software.
3. Select JLink Lite device and press OK button in Options window. Select COM port for JLink Lite
is connected to and press Connect button.
Figure 1. Options window
4. Configure the UHF radio in UHF tab and press Apply button.
JLink Lite in NTRIP to UHF mode
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Note: The Transmitter Protocol should be selected for transmitting corrections from NTRIP Caster to Rovers.
Figure 2. UHF tab
5. Configure GPRS parameters in GSM tab in the GPRS subtab and press Apply button.
Figure 3. GPRS subtab
Note: This information is provided by cell provider.
JLink Lite in NTRIP to UHF mode
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6. Set up NTRIP parameters in the NTRIP subtab and press Apply button.
Figure 4. NTRIP sutab
Note: This information is provided by NTRIP Caster.
7. Enter SIM card’s PIN code (if needed), then set the mode to GPRS in Main subtab and press
Apply button.
Figure 5. Main subtab
JLink Lite in NTRIP to UHF mode
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8. Wait until State will be “
connected
”. Quit ModemVU by clicking Exit button, to prevent the
improper receipt of corrections.
Figure 6. Satus of GPRS- connected
Note: The GSM LED and UHF LED are blinking when corrections are directed from GSM modem (from
NTRIP Caster) to UHF radio (for transmitting to Rovers).
All settings are saved in the JLink Lite’s memory and will be re-called after turning on the device (it is not
need to configure the device again after turning it on).
900 Rock Avenue, San Jose, CA 95131 USA
Phone: +1(408)770-1770
Fax: +1(408)770-1799
www.javad.com
Copyright © JAVAD GNSS, Inc., 2012
All rights reserved. No unauthorized duplication.
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