Your generator is damaged: there is probably an open-circuit after the
attenuator, maybe at the back of the output connector. Connecting the
generator to a high-impedance load cannot damage it. It is no more
harmful than operating the generator with nothing connected to its output.
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK
On 2018-05-17 14:17, Andre Gomes Videira wrote:
Hello all,
I would like your opinion on one matter that happened in my lab not
long ago.
I found out that my RF generator was sending a much lower power than
it was specified.
If on the display it was described as it was generating 0dBm, the real
output power was around -50dBm.
I also found out that, one of my co-workers, previous to this problem,
had connected the RF output (with 50hm of impedance) to an
oscilloscope (with 1Mohm of impedance).
Of course, this means that I had a full signal reflection on this
case. The signal was around -20dBm in 35kHz.
Should I assume that my generator is damaged?
Or maybe I have another kind of problem, and this connection and
reflected wave do not pose a threat to the generator?
Thank you very much for your help.
Best regards,
André Gomes Videira
Laboratório de Ensaios e Certificações
Telefone: + 55 47 3276-7613 | Skype: agvideira
WEG Drives & Controls - Automação Ltda.
www.weg.net
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