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RACELOGIC Support Centre

Replay

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This page contains information about replaying scenario files on LabSat 4 Replay Only variants.
Replaying Operation
Media/Memory

LabSat 4 Replay Only variants use an internal SSD to replay GNSS data.

You can also connect to and use an external USB storage device or a Network Attached Storage (NAS) device to replay the data. 

Connections

The RF OUT connector on the rear panel of LabSat 4 is a 50 Ω output that can be connected directly to the antenna input of the GNSS receiver under test. The RF OUT connector on your LabSat 4 is DC blocked internally to make it safe to connect almost any device to this port.

Replaying Example

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

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Antenna to RF_OUT.png

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FindFile.png

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

Press the POWER button to power up the unit.

Use the up and down arrow buttons on the front panel to select the relevant scenario file.

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PlayFile.png

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FilePlaying.png

Press the Play button. This will display the Replay Status screen and start the playback of the file. 

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. The display will return to the File Selection Screen.

Additional Info

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.

Note: When you switch between GNSS monitor modes, it will take some time for the internal receiver to re-acquire satellite signal levels. 
Replay External Signals

Model Limitations

LabSat 4 Lite models cannot record or replay external signals. 

In addition to GNSS Signals, you can also replay the following data:

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