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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