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Accurate frequency setting using hp33120a driver in labwindows/cvi

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Hello,

I am using the hp33120a driver for my 33220A function generator with USB connection.

When setting the frequency to 9000Hz [ hp33120a_ConfigureStandardWaveform (hp33120a, "1", HP33120A_VAL_WFM_PULSE, 5.00, 2.50, 9000.0, 10.00); ]

The device shows 9.0090090 kHz. Similar with other values.

Any ideas how to get the correct frequency?

 

thanks & regards,

Jo


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