Author Topic: Can I use 1:1 passive probes with 64pF shunt capacitance with a 1054z?  (Read 624 times)

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Offline julian1

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Does 64pF, imply actual compensation adjustment anywhere from 10pF - 64pF ?
 
The probes are these,

http://www.keysight.com/en/pd-1000000977%3Aepsg%3Apro-pn-10439A/11-2m-miniature-passive-probe?cc=US&lc=eng

If not - then can I change the capacitor trimmer?

Online tggzzz

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Re: Can I use 1:1 passive probes with 64pF shunt capacitance with a 1054z?
« Reply #1 on: February 21, 2017, 08:01:08 pm »
Does 64pF, imply actual compensation adjustment anywhere from 10pF - 64pF ?
If not - then can I change the capacitor trimmer?

It means the tip capacitance that loads your circuit is 64pF. *1 probes don't have a frequency compensation trimmer capacitor.

They can be used with a 1054Z scope, with the standard performance limitations.
There are lies, damned lies, statistics - and ADC/DAC specs.
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Offline danadak

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Re: Can I use 1:1 passive probes with 64pF shunt capacitance with a 1054z?
« Reply #2 on: February 21, 2017, 11:56:23 pm »
Of course you have significant circuit loading, at 1 Mhz Xc ~= 2.5K
ohms, quite low.

Completely out of the question to probe a crystal oscillator circuit
for example, at the crystal.


Regards, Dana.
Love Cypress PSOC, ATTiny, Bit Slice, OpAmps, Oscilloscopes, and Analog Gurus like Pease, Miller, Widlar, Dobkin, obsessed with being an engineer
 
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