Hi people
I have a HP8920A service monitor.
When I turn it on, I passed the test itself.
I have a problem measuring the transmitter power.
Namely, the measurement of power is about 20% less.
Also, while the transmitter is activated, the power level slowly decreases. For about 60 sec., it drops by 1W.
When measuring the power level on the spectrum analyzer, there is also slightly less reading (approximately 10%), but the level is stable.
Does anyone have any suggestions, where is it, and how to solve this problem?
I know the problem is not simple and it's probably necessary to calibrate.
However, calibration firms are mostly in the United States, so sending devices from Europe is very complicated and costly.
Thanks in advance!
Stan