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hi, I want to read the cantilever deflection in tapping mode by recording the TM deflection signal from the General Outputs 1/2 of the NSV controller. I just want to know if this can be done, since the General I/O Outputs 1/2 have an update rate of 100kHz where as the TM deflection is expected to have a frequency between 250-350 kHz.
Umar.
As you allude, the front panel output will not keep up with an AC signal at >50KHz due to the update rate. Also, the TM deflection is generally low pass filtered at <=40KHz (this can be disabled in software, but there is still a hardware LPF at 200KHz). If you have access to a Signal Access Module, it can provide direct access to the unfiltered deflection channel through In0.
--Bede