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2620A/2625A
Users Manual
A-2
DC Voltage Inputs
Range Resolution
Slow Fast
300 mV 10 µV 0.1 mV
3 V 0.1 mV 1 mV
30 V 1 mV 10 mV
300 V 10 mV 0.1 V
Accuracy ± (% ± V)
Range 18°C to 28°C 0°C to 60°C
90 Days, Slow 1 Year, Slow 1 Year, Fast 1 Year, Slow 1 Year, Fast
300 mV 0.018% + 20 µV 0.023% + 20 µV 0.040% + 0.2 mV 0.067% + 20 µV 0.084% + 0.2 mV
3V 0.019% + 0.2 mV 0.024% + 0.2 mV 0.041% + 2 mV 0.065% + 0.2 mV 0.082% + 2 mV
30V 0.019% + 2 mV 0.024% + 2 mV 0.041% + 20 mV 0.086% + 2 mV 0.103% + 20 mV
150/300V 0.019% + 20 mV 0.024% + 20 mV 0.041% + 0.2V 0.087% + 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