Can Fluke 287/289 do low freq noise measurement on battery ?

[BravoV]

As these DMM models have logging & charting feature, with sample interval can be set from one second minimum to 100 minutes, and the logging session duration can be set from one minute up to 100 days.

The DC accuracy is 0.025%+2 digits at 5 Volt range with resolution at 0.0001V or 100nV 100uV.

Is it good enough to be used for measuring single cell battery noise ?

[Andreas]

Hello,

generally I would say: no. (depends on the cell type and the temperature of the cell).

a) 0.0001V are 100uV. How do you calculate 100nV in 5V range.
b) With my 1/f LNA when measuring a 9.6V NiMH battery
    I typically get the noise floor of the LNA of 100-200nVpp for a 0.1-10Hz range.

with best regards

Andreas

[trobbins]

What are you trying to measure - some characteristic of the battery by itself, or as a reaction to an external signal?

[BravoV]

Hello,

generally I would say: no. (depends on the cell type and the temperature of the cell).

a) 0.0001V are 100uV. How do you calculate 100nV in 5V range.
b) With my 1/f LNA when measuring a 9.6V NiMH battery
    I typically get the noise floor of the LNA of 100-200nVpp for a 0.1-10Hz range.

with best regards

Andreas

Damn, got brain fart  , thanks for the pointing out, corrected.

Looks likes no go isn't it ? Especially at nV p-p noise floor.

What are you trying to measure - some characteristic of the battery by itself, or as a reaction to an external signal?

The battery it self, and my meter is not good enough, actually far from it, isn't it ?

[trobbins]

Relevant references:
https://dalmura.com.au/static/Resistor%20noise1.pdf
https://tf.nist.gov/general/pdf/1133.pdf