Sweep with Agilent function generator - rising amplitude

[Klüs]

Hello,

i am using an Agilent 33210A function generator and i try to generate a simple sinus sweep with constant amplitude.

For some reason the amplitude is increasing for the whole sweep-time. I basically used the Sweep VI from the Agilent 33xxx example VIs.

I only added the VOLT command to control the amplitude as described in the User's guide. Hope you can tell me where my mistake is. 🙂

[RTSLVU · Accepted solution]

Does this phenomenon occur if you sweep the frequency manually?

[ben64]

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@Klüs wrote:

Hello,

i am using an Agilent 33210A function generator and i try to generate a simple sinus sweep with constant amplitude.

For some reason the amplitude is increasing for the whole sweep-time. I basically used the Sweep VI from the Agilent 33xxx example VIs.

I only added the VOLT command to control the amplitude as described in the User's guide. Hope you can tell me where my mistake is. 🙂

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Have you tried setting the amplitude before configuring the sweep, not in the middle of it?

Ben64

[Klüs]

Thank you, that was the right hint. It was not a software problem but a hardware thing. I didn't consider that the measuring chain has such a frequency depending behaviour.

Obviously a beginner's mistake. Next time i will try to exclude these types of errors before i ask for help.