On Thu, 28 May 2009, hankc918 wrote:
You cannot "change" the input capacitance of any Tek vertical input.
It is what it is.
Use a Tek probe.
HankC, Boston
Err, what exactly does the calibration of input capacitance do then?
If you have a 'scope with input impedance of say 20pF in parallel with
1Meg, putting a parallel resistor capacitor of 1Meg/20pF in series with
the input (exactly the same as an input normaliser) will change the input
capacitance to 10pF, and resistance to 2Meg.
It will also upset the calibration...
Geoff
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Geoff Blake G8GNZ located near Chelmsford, Essex, U.K.
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