Products > Test Equipment

Agilent 34401A Jitter.

<< < (3/3)

JoeyP:
I just tested 3 Agilent 34401A meters. Two of them are of identical vintage, and each settled at -0.070mV open circuit, toggling about +/-0.010mV. The third meter is a few years older, and settled at +0.020mV, also toggling about +/-0.010mV. These readings were about 30 seconds after power up. All were within +/-0.003mV with the inputs shorted.

All of the meters tested seem to default to 10M input impedance at power up. Maybe there's a way to set the default to 10M on/off at power up, and maybe yours defaults to 10M not enabled, which would give very different results.

TopGunPk:
Thanks for the explanation.

Will try to set the Input impedance to 10M for DC mV measurement.

StubbornGreek:

--- Quote from: TopGunPk on January 21, 2013, 10:20:30 pm ---Thanks for the explanation.

Will try to set the Input impedance to 10M for DC mV measurement.

--- End quote ---

This won't change the behavior much. What are you trying to accomplish? Does it stabilize when you short the leads? It is the measurement that should concern you; go ahead and check some known sources to ensure the device is functioning properly.

Navigation

[0] Message Index

[*] Previous page

There was an error while thanking
Thanking...
Go to full version