I work on new project. I will use multimeter PXI-4070 with switch mux PXI-2575. The multimeter will measure voltage on differents tests points of a circuit in test. The input impedance of PXI-4070 are 10Mohms in measure voltage mode. So the current in relays of PXI-2575 will be very low <2.4uA. All voltages to measure are between 0.5VDC et 24VDC. There are also a measure of 8VaC and 16VAC.
The relay minimum load in datasheet of PXI2575 FEV2008 are "10uA at 10uV DC".
The relay minimum load in datasheet of PXI2575 APR2009 are "20mV/1mA".
My questions:
What the minimum load change in 2009 or it's a error in documentation?
What the real signification of "20mV/1mA"?
The current must be always greater than 1mA or periodicly greater than 1mA?
The voltage are voltage to init contact or the voltage must be always greater than 20mV?
What a current less than 1mA decrease life of relay?
If I measure AC voltage what the consequence on the measure when the current are between -1mA and 1mA?
Thank you!
