Author Archives: Koen Buisman

WebLab DUT degraded

Experiments to explore higher input powers to the DUT have resulted in degradation of the DUT’s performance.

The transistor on the DUT will be replaced soon.

Best regards,

WebLab team at Chalmers

New client released

Please find the v1 version of our new client at access-details.

Note that the Pin and xs clients have been merged into a single client.

Also note that we have rewritten substantial parts of the RF WebLab software. Even though we have tested many aspects of our software, we may have unintentionally created unforeseen issues.

Feedback is thus appreciated.

Best regards,

WebLab team at Chalmers

Upcoming release of new clients

After implementing several improvements at both client and server level, we are almost ready to release our new clients.

Note that old clients will stop functioning with this server/client software upgrade.

Besides the old functionality, the new client will have the following features:
– Improved reliability
– Data transfer integrity check
– Faster data transport
– Error handling
– Client version detection

Improved reliability – We have rewritten the data transfer process in RF WebLab, resulting in a more reliable protocol to transfer the data. We have further implemented failure detection, which will detect failures at the measurement level or server level and try to reinitialize both processes.
Data transfer integrity check – We now verify the integrity of transfer data by comparing hashes.
Faster data transport – When possible we compress the data, in many cases this reduces the size of the data to be transferred.
Error handling – We now generate several error-codes which are reported back to the client. These will make it clearer to the user why a measurement is rejected or failed.
Client version detection – We can detect the version of the client you use and are able to directly let you know if you need to upgrade.

Note that we have removed the option to take a photograph of the measurement setup. Unfortunatly the webcam + driver created instability in RF WebLab. Removing this allowed us to merge the (x, Pin) and (xs) clients. There will only be a single RF WebLab client.

We are performing our final checks now and are almost ready to launch the new clients.

Best regards,

WebLab team at Chalmers

Temporary deviation of output power levels

Temporarily the reported output power level will be incorrect.

We have exchanged some components, resulting in a need for recalibration of the setup.

For testing purposes we chose to leave the setup operational anyway.

We expect to perform a power calibration this week.

Best regards,

WebLab team at Chalmers