ComNav SinoGNSS M300 Mini(G) Manuale utente
M300 GNSS Receiver Quick Tour
©2012-2014 ComNav Technology Ltd, all rights reserved
www.comnavtech.com
M300 GNSS Receiver Quick Tour
©2012-2014 ComNav Technology Ltd, all rights reserved
All rights reserved. No parts of this work may be reproduced in any form or by any means -
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these trademarks.
While every precaution has been taken in the preparation of this document, the publisher and
the author assume no responsibility for errors or omissions, or for damages resulting from the
use of information contained in this document or from the use of programs and source code
that may accompany it. In no event shall the publisher and the author be liable for any loss of
profit or any other commercial damage caused or alleged to have been caused directly or
indirectly by this document.
Contents
Chapter1 Introduction........................................................................1
1.1 Package list............................................................................................................................ 1
1.2 M300 enclosure receiver introduction ................................................................................. 1
Chapter2 System installation..............................................................2
2.1 Front panel introduction....................................................................................................... 2
2.2 Antenna installation .............................................................................................................. 2
Chapter 3 Configuration OEM Card by CRU software ..........................3
3.1 Connected with GNSS receiver ............................................................................................. 3
3.2 Receiver configuration .......................................................................................................... 4
3.2.1 Raw data recording set up.............................................................................................. 4
3.2.2 Get correction message from Radio or Ntrip................................................................. 6
3.2.2.1 Get correction message from Ntrip............................................................................. 6
3.3 Main information check ........................................................................................................ 8
3.3.1 Satellites information and global map view................................................................... 8
3.3.2 RTK status indication ...................................................................................................... 9
3.4 Raw data management ....................................................................................................... 10
3.4.1 Raw data download...................................................................................................... 10
3.4.2 Memory management.................................................................................................. 11
3.4.3 Rinex convert................................................................................................................ 11
3.5 Sending command to Receiver............................................................................................ 12
Chapter 4 M300 Frequently Used ASCII Command............................13
4.1 Base station configuration .................................................................................................. 13
4.2 Rover configuration............................................................................................................. 14
4.2.1 Set Rover to differential mode..................................................................................... 14
4.2.2 Check the solution type................................................................................................ 15
4.3 Change the serial port baud rate ........................................................................................ 15
4.4 Satellites constellation system configuration ..................................................................... 16
4.5 log raw data of GNSS observations..................................................................................... 16
4.6 Update the OEM Card ......................................................................................................... 17
4.7 Update radio firmware........................................................................................................ 19
Appendix A...........................................................................................20
1
Chapter1 Introduction
1.1 Package list
Thanks for choosing ComNav M300 enclosure GNSS receiver. Please check the evaluation
package you received with the package list as following.
No.
Name
Quantity
Index
1
Enclosure receiver
1
2
A/C adapter
1
3
Data cable
1
From PC to receiver, RS232 to 7 pin cable
4
GNSS antenna
1
5
GNSS antenna cable
1
6
Radio antenna
1
Some special application case, special antenna
supplied
1.2 M300 enclosure receiver introduction
M300 receiver with 1 GNSS OEM card inside and integrated with radio data link, is mainly used
in high accuracy application, e.g., positioning, monitoring, construction, marine, etc.
M300 GNSS receiver
2
Chapter2 System installation
2.1 Front panel introduction
Front panel of M300 receiver
Ref. # Description
❶3 LED indicates the work status of the receiver.
PWR: power indicator. After power on, this LED will light in red colour
SAT: satellites indicator. It will flash several times every 5 seconds, which means how many
satellites locked by the receiver.
LINK: correction message. As a base station, flash once per second means sending correction
message 1/s; as a rover, it means receiving correction message. In the raw data recording mode
(data recorded in the memory of receiver), this LED will also flash according to sampling interval.
❷TNC GNSS antenna connector
❸TNC UHF antenna connector
❹DC1: serial port communication with Com 1 of OEM Board. Appendix A: the Pin definition
of this port.
❺DC3: serial port communication with internal UHF and Com 3 of OEM card.
2.2 Antenna installation
The Installation of GNSS antenna is a very important factor affecting the performance of
receivers. It will have a great influence on the visibility of satellites and SNR, so the antenna
should be in open area and far away from big power electromagnetic radiation devices.
1
4
3
2
5
3
Chapter 3 Configuration OEM Card by CRU software
Compass Receiver Utility is a windows-based GUI that allows you to access most features of the
receiver without the need to use a terminal emulator or to write special command. CRU lets
you easily communicate with and configure the receiver via serial ports or Ethernet connection,
using a PC with Windows XP or Windows 7 operating system on it.
Compass Receiver Utility is available on the webpage
http://www.comnavtech.com/download.asp?bigclassid=28
3.1 Connected with GNSS receiver
You can use serial port of PC to connect with the receiver, the default baud rate is 115200
(OEM Card baud rate).
Go to Set port, set up the connections, and click OK
If the connection is successful, you will see that the SN number of receiver will show on the left
top of software operation window; if not, please check the power and connection of all parts.
4
❶Connection status: SN No. of receiver, the data download path. You can select the data
download path from the left function bar-> Folders, then select the folder path.
❷Main menu: all the operation of software menu can be found here.
❸Shortcut bar: make it easy to access some frequently used operation.
❹Function bar: select the function, such as data download, convert to Rinex data.
❺Main window: show the information such as PVT view, SV sky plot view, and hyper terminal.
3.2 Receiver configuration
3.2.1 Raw data recording set up.
Go to the shortcut bar, click .
Satellites configuration:
Mask angle, GPS/Beidou/Glonass
Raw data sample interval, 1/2/5.
Data log: auto mode—save the raw data in the memory of OEM card (100MB memory card)
Tips, after do the configuration, please click apply setting, power off and power on the receiver
1
2
3
4
5
5
Local log: log the raw data to local PC, the file name will be auto named and stored in the
current folder path. In this mode, you can define the raw data message type as shown below.
6
3.2.2 Get correction message from Radio or Ntrip
3.2.2.1 Internal Radio setup
This step is for setting up internal UHF frequency and protocol. You must link DC3 port to set
radio parameters. Go to in shortcut bar, set up the Frequency and protocol (same as
external transmit radio).
3.2.2.1 Get correction message from Ntrip
Make sure your laptop or PC can use internet.
Go to , there are two protocols to receive the correction data: internet-TCP direct and
Ntrip mode. If the protocol is TCP direct mode, input the IP address and port and click Connect;
If using the Ntrip mode, tick the Ntrip mode then click Connect.
Tips: The internal radio airlink rate is 9600bps, and the radio is linked to com2 of GNSS
board as the baud rate of 115200bps. So you must set the airlink baud date of transmit
radio as 9600 bps, and the com2 baud rate of GNSS board as 115200 bps (the default band
rate is 115200).
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