I would like to ask a technical question regarding the current source Keithley Series 2400 Model 2450. I am looking for a high stability current source capable of feeding some Hall probes with a nominal current of 10 mA. According to the 2450's datasheet, for a current range of 100 mA, the RMS noise is 100 nA for the bandwidth below 10 Hz, as you can see below.
Could someone please help me to figure out in detail what this specification means? For example, if I set the 2450 with a current of 10 mA (100 mA range) and measure the current samples with a sampling rate of 10 Hz, should I expect a RMS value of 100 nA around the nominal 10 mA? Is that correct?
What if I measure the 2450's output with a sampling rate of 50 Hz? Can we estimate the RMS value as 100 nA * (50/10)^.5 = 223 nA? Would this be correct?
Thank you.
