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External power source required for resistance measurements.
Recommendation for external power source for
measurement for 1 GΩ sample at 100 Vdc with accuracy = ±10%:
Ripple: ≤ 1 mVrms (50/60 Hz)
Wideband noise: ≤ 5 μVrms/Hz (50 Hz)
Switching noise: ≤ 50 mVrms (100 kHz)
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