Fluke DC Voltage Inputs, 2620A/2625A, Input Impedance, Normal Mode Rejection, Maximum Input

2620A/2625A

Users Manual

DC Voltage Inputs

Range

300mV

3 V

30V 300 V

	Resolution
Slow		Fast
10 μV		0.1 mV
0.1 mV		1 mV
1 mV		10 mV
10 mV		0.1 V

Accuracy ± (% ± V)

Range

18°C to 28°C

0°C to 60°C

	90 Days, Slow
300 mV	0.018% + 20 µV
3V	0.019% + 0.2 mV
30V	0.019% + 2 mV

150/300V 0.019% + 20 mV

1 Year, Slow

0.023% + 20 µV

0.024% + 0.2 mV

0.024% + 2 mV

0.024% + 20 mV

1 Year, Fast

0.040% + 0.2 mV

0.041% + 2 mV

0.041% + 20 mV

0.041% + 0.2V

1 Year, Slow

0.067% + 20 µV

0.065% + 0.2 mV

0.086% + 2 mV

0.087% + 20 mV

1 Year, Fast

0.084% + 0.2 mV

0.082% + 2 mV

0.103% + 20 mV

0.104% + 0.2V

Input Impedance

100 Me minimum in parallel with 150 pF maximum for all ranges 3V and below 10 Me in parallel with 100 pF maximum for the 30V and 300V ranges

Normal Mode Rejection

53 dB minimum at 60 Hz ±0.1%, slow rate

47 dB minimum at 50 Hz ±0.1%, slow rate

Common Mode Rejection

120 dB minimum at dc, 1 ke imbalance, slow rate

120 dB minimum at 50 or 60 Hz ±0.1%, 1 ke imbalance, slow rate

Maximum Input

300V dc or ac rms on any range for channels 0,1, and 11 150V dc or ac rms for channels 2 to 10 and 12 to 20

Cross-Talk Rejection

Refer to Appendix D

A-2