Since the output impedance of 1141A is 1 Mohm, input impedance of 4395A is 50 ohm. If connect 1141A to 4395A, how 4395A handle the impedance mismatching?
I looked in the 1141A service guide and found a section on "Using probe with other instruments" on page 9.
It states that:
The 1141A/1142A probe system can be used with other instruments as well as oscilloscopes. You can use it with a spectrum analyzer or frequency counter, or any instrument with an input that can be terminated with 50 Ω. If you are going to use the probe system with an instrument other than an oscilloscope, you may need to set up the probe with an oscilloscope first. This will allow you to select coupling and reject modes, and set offset, so the output of the probe is compatible with signal requirements of the other instrument.
The service guide also contains a section called "Theory of Operation" on page 59.
In addition to that, here is an application note that explains how impedance matching can be done.
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