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Quick Start Guide

Updated on Apr 10, 2026

LabSat 4 is shipped with a rechargeable, lithium-ion smart battery pack. A fully charged battery provides a unit operation time of a minimum of 1 hour. You can charge the battery by connecting an external power source to the Power port on LabSat 4. 

You can read more about the battery pack, including operation, charging, fitting, removal and handling, here.

You can apply power to LabSat 4 via mains power with the power supply (RLVBACS020) or from the vehicle via the cigar plug to power (RLCAB010LE) cable. When you power LabSat 4 from an external source, it will automatically charge the internal battery pack, and seamlessly switch to battery operation when the external power is removed.


This is an example of how to record a file to the internal SSD on LabSat 4 (RP variant).

1. Connect the antenna to the RF IN port on the rear panel of the LabSat 4 unit.

2. Place the GNSS antenna in the middle of the roof, at least, 10 cm from any other antennas or objects.

Hand connecting an antenna cable to the RF IN port on the rear of a LabSat 4 unit.
Hand placing a GNSS antenna on the roof of a car.
Hand connecting an antenna cable to the RF IN port on the rear of a LabSat 4 unit.
Hand placing a GNSS antenna on the roof of a car.

3. Press the POWER button to power up the unit. Ensure you have selected the correct recording settings (quanitization, bandwidth, and frequency).

4. Press the REC button on the front panel to start the recording.

Hand configuring settings on a LabSat 4.
Hand pressing the REC button on a LabSat 4.
Hand configuring settings on a LabSat 4.
Hand pressing the REC button on a LabSat 4.

5. Drive the desired route for the scenario.

6. Press the REC button again to stop the recording.

Car exiting a car park.
Hand pressing the REC button of a LabSat 4 unit.
Car exiting a car park.
Hand pressing the REC button of a LabSat 4 unit.
LabSat 4 Record Screen

The Record Screen will display the number of satellites, the allocated file name, the recording duration, and the CAN and RS232 logs being recorded (if enabled). The flashing square next to a signal type indicates that the signal is being recorded. When a recording is complete, the File Selection Screen will open with the recorded file in the list of available files. 

LabSat 4 Record Screen

The Record Screen will display the number of satellites, the allocated file name, the recording duration, and the CAN and RS232 logs being recorded (if enabled). The flashing square next to a signal type indicates that the signal is being recorded. When a recording is complete, the File Selection Screen will open with the recorded file in the list of available files. 

During recording, if the SSD becomes full, the recording will stop automatically. 

LabSat 4 contains an onboard GNSS receiver that gives you the ability to monitor the RF signals during record or replay. If you press the OK button while the unit is recording, it will switch the display to show available satellite levels for the different constellations. In this display mode, you can use the UP/DOWN buttons to toggle between the different constellations. Press the OK button in this display mode to open the file status. Press the OK button again to return to the record status display mode.


Example of how to replay a scenario file from the SSD.

1. Connect the Device Under Test (DUT) to the RF OUT port on the rear panel on the LabSat 4 unit.

Press the POWER button power up the unit.

2. Use the UP and DOWN arrow buttons on the front panel to select the relevant scenario file.

Hand connecting the DUT antenna to the RF OUT port of a LabSat 4 unit.
Hand selecting a file to replay on a LabSat 4 unit.
Hand connecting the DUT antenna to the RF OUT port of a LabSat 4 unit.
Hand selecting a file to replay on a LabSat 4 unit.

3. Press the PAUSE/PLAY button. This will display the Replay Status screen and start the playback of the file.

4. The DUT should now be receiving the replayed satellite signal data, making it possible to perform realistic and repeatable tests under controlled conditions. Press the PAUSE/PLAY button during the replay, to stop the replay.

Hand pressing the PAUSE/PLAY button on a LabSat 4 unit.
LabSat 4 playing a scenario file.
Hand pressing the PAUSE/PLAY button on a LabSat 4 unit.
LabSat 4 playing a scenario file.
The Replay screen of a LabSat 4 unit.
LabSat 4 Replay Screen

The Replay Screen will display the number of satellites, the file name, the replay duration, the progress through the length of the recording file and any applied signal attenuation. When the replay has finished, the File Selection Screen will open. 

The Replay screen of a LabSat 4 unit.
LabSat 4 Replay Screen

The Replay Screen will display the number of satellites, the file name, the replay duration, the progress through the length of the recording file and any applied signal attenuation. When the replay has finished, the File Selection Screen will open. 

LabSat 4 contains an onboard GNSS receiver that gives you the ability to monitor the RF signals during record or replay. If you press the OK button while the unit is replaying, it will switch the display to show available satellite levels for the different constellations. In this display mode, you can use the UP/DOWN buttons to toggle between the different constellations. Press the OK button in this display mode to open the file status. Press the OK button again to return to the replay status display mode.