VMA Simple Spectrum Analyser for SMA/NWT/D6/LTFZ now with calibration and error compensation!

Hi,

I just uploaded a new version of my software for the SMA/NWT/D6/LTFZ devices, featuring calibration and error map compensation!

The new Calibration tab.

Orange trace: -20dBm signal without calibration

Green trace: -20dBm signal with calibration active using error map

Orange trace: -8dBm signal without calibration

Green trace: -8dBm signal with calibration active using error map

In order to create the required error map, a signal source producing a 0dBm trace is required.

Then, several attenuation steps are applied, in order to measure the respective trace as measured with the SMA/NWT/D6/LTFZ device.

It is recommended to use a "Key-Press Attenuator" like this one:

https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=Key-Press+Attenuator

The error map is a CSV file that can be opened and edited in Excel. In theory, you could manually create an error map, using calibrated professional signal generator:

Hope you like this new feature, which potentially adds a new level of precision to the cheap SMA/NWT/D6/LTFZ devices.

Please note that this functionality is still under development and I am not sure about the results that can be obtained!

Regards,

Vitor