Linnet - ZED-F9P module configuration

1. UCenter - Connection
2. UCenter - Graphical interface introduction
3. Setting up NTRIP with Centipede on UCenter for ZED-F9P
4. Getting the ZED-F9P port on UCenter on Linux with Wine

Post 2 - ZED-F9P module configuration

UCenter - Connection

To establish the connection with the receiver, select the COM port corresponding to the card from the drop-down menu to the right of the “Connect serial port” button.

If the port has been opened, then the icon at the bottom right of the screen should change from to . This does not mean that the connection has been established.

The baud rate must be selected in the drop-down menu to the right of the baud rate button. The default baud rate for the F9P is 38400 bit/s.


The receiver is now ready to use.

UCenter - Graphical interface introduction

UCenter offers several tools for analyzing received frames. These are available in the horizontal toolbar at the top of the screen.

Satellite level displays the signal strength for each satellite within reception range. A signal above 40 db is considered good. A delay is often necessary to establish connection with the satellites, particularly if the module has been inactive for a long period of time.

Data displays localization and correction information. Fix Mod is the correction parameter and indicates the method used and therefore the accuracy of the localization. Values in ascending order of accuracy are: 3D/DGPS, DGNSS, float and fixed. An initialization delay is required for the correction to initialize.

Satellite position indicates which satellites are closest to the antenna, which is placed in the center of the two circles. The further outside the circle a satellite is, the further it is on the horizon from the antenna, and the noisier its signal. If the satellite is too far away, the signal will not be taken into account for localization. Satellites in this category are colored red.

Watch gives the time in the UTC timezone.


Packet console analyzes packets received by the GNSS module. The presentation is easier to read than in a Linux console.

Setting up NTRIP with Centipede on UCenter for ZED-F9P

Connect the ZED-F9P to UCenter. In the Receiver tab, click on NTRIP Client.


Enter the caster information, which is used to obtain the available NTRIP bases. The caster used here is centipede. Centipede information is also available here.

The NTRIP stream is actually an NTRIP base. To choose the right base, go to this link to view bases on a map in real time.

Find the verified (green) base closest to your antenna. Then select it from the NTRIP mount drop-down menu in the NTRIP stream section of the Ucenter window. Click on OK.

NMEA frame retrieval and processing on UCenter for ZED-F9P

Frames can be viewed in real time on a terminal directly via the USB device with the following command:

cat /dev/ttyACM0

Frames can then be redirected to a file.

cat /dev/ttyACM0 > log

The file can be read on Ucenter. To do this, in the UCenter’s File tab click on Open. Find the directory containing the file. Display all file types by selecting the All Files option at the bottom right of the screen.

Once the file has been opened, a file reading bar should appear.

It is then possible to start the frame stream, pause it, or go forward and backward frame by frame. The stream can be displayed in the packet console tool, for example.

Getting the ZED-F9P port on UCenter on Linux with Wine

Because of Wine, the com ports offered in UCenter do not correspond to the linux ports.

The ZED-F9P COM ports on Linux are normally ACM0 and ACM1. This can be checked by displaying the kernel buffer after connecting the module to usb.

sudo dmesg

The command above should display the following information.

The COM port mapping table between Linux and Wine is obtained with the command below.

ls ~/.wine/dosdevices -lah

The command should display the following result.
Here, the ports to be selected on UCenter are Com33 and Com34.

If you have any further questions or problems configuring Linnet ZED-F9P, please reply to this post. We’ll be glad to help.

Systork Team