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Generator output level


 

Hi to the group,

I just received my TinySA from Zeenko, quickly shipped and well tracked by Aliexpress.
This is a great instrument and congratulation to Erik and all for such an outstanding piece of equipment.
Thanks to this group's archives, I could find the ST driver and could upgrade the firmware to the latest version.

I own a HP generator and a Signal Hound SA44 spectrum analyser ; I checked the TinySA from 3 to 144 MHz, and with different signal levels, the result are really impressive.
As a signal generator, from 3 to 144 MHz, output level tracks very finely from -44dBm to -6dBm.

However, there is a sudden discrepancy in the output level from -45dBm to -76dBm, in fact the output level is -4 to -5 dBm lower, independent of frequency.
Is this "normal", and is it possible to correct this ?

Thanks again and best regards.

?

Georges F6DFZ

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