Author Topic: Can I use 1:1 passive probes with 64pF shunt capacitance with a 1054z?  (Read 718 times)

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julian1

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Can I use 1:1 passive probes with 64pF shunt capacitance with a 1054z?
« on: February 21, 2017, 06:13:13 pm »

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?

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.
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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.
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