LabSat 4 has 3 RF channels that can be individually customized. Each channel can be set with up to 12-bits I & Q quantization with intermediate setting choices of 1, 2, 4, 8 and 12 bits. The bandwidth is also variable and can be set from 10 - 60 MHz.

These performance settings comfortably capture almost any combination of GNSS signals simultaneously, whilst ensuring the efficient use of recording resources and file management.

For increased efficiency, custom record settings can be saved and quickly selected for future recordings.

SatGen Simulation Software allows you to create a GNSS RF I&Q or IF data file based on a user-generated trajectory that can be replayed on a LabSat GNSS Simulator. This allows you to simulate almost any kind of test at any time, date and location.

Scenarios can feature multi-stop routes and include the crossing of time zones, leap seconds and roll-overs.

LabSat 4 can record a range of additional signals, synchronised to the GNSS input, including dual-CAN, CAN-FD, RS232, digital inputs and correction signals such as DGNSS and RTK.

Simultaneously capturing additional signals can increase the level of playback realism and allows for a wider range of testing.

NMEA data is also accessible via USB from the built-in GNSS receiver.

A Video VBOX can be used in combination with LabSat to record video of the test route. This helps to identify the effect of external conditions on your device, such as why exactly was there a drop-out or multi-path reflection at a particular point in the test, and what caused it.

LabSat’s Application Programming Interface (API) provides control and testing automation that allows test scenarios to be programmed to automatically repeat or play in a set order. This improves efficiency with significant testing programs able to be run continuously, without the need for human supervision.

Additionally, the use of the Ethernet connection allows for centralised control of the API, enabling testing at global production facilities to be controlled remotely from a central office. This combination can significantly increase consistency in testing and reduce the scope for user error.

LabSat 4 is engineered to capture and simulate GNSS signals within the upper and lower L-band, as well as the S-Band. LabSat 4 can Record & Replay the following signals:

• GPS L1, L2, L5
• Galileo E1, E5a/b, E6
• GLONASS G1, G2, G3
• BeiDou B1, B2a/b, B3
• QZSS L1, L2, L5, L6
• NavIC L1, L5, S-Band
• SBAS L1, L5

Further signals can be configured with the Web Interface. Bespoke requirements like Iridium & Sirius XM radio frequencies are available on request.

With LabSat 4 Multi-Sync, you can synchronise both the recording and replay of scenarios across two LabSat 4 units with extreme precision. This ensures accurate and repeatable testing for dual-antenna applications, where maintaining exact timing between signals is crucial.

To achieve this high level of synchronisation, simply connect both units using the Dual Sync Cable, allowing you to record and replay tightly synchronised GNSS scenarios with confidence.

This feature is particularly useful when comparing the performance of different antennas or replicating passive antenna conditions during testing.

By default, LabSat 4’s Automatic Gain Control (AGC) dynamically adjusts internal gain to optimize recording quality. While this provides a flexible and user-friendly experience, it also normalizes signal power, making differences between channels less distinguishable.

With Manual Gain Mode, you can disable AGC and set a fixed input gain to a user-specified level. This allows for accurate reproduction of power level variations in recordings and maintains correct relative power levels between channels, making it ideal for applications where signal fidelity is crucial—such as antenna testing and GNSS interference analysis.