The Fluke 8400a is a 5 1/2 digit, systems-oriented digital voltmeter. The 8400A measures dc voltage on five ranges with sensitivity to 1 micro-volt in its basic configuration. The 8400A Digital Voltmeter measures DC volts from ±0.1 V to ±1000 V on five ranges with a 5 1/2 digit display.
Features:
1 µV sensitivity
Basic DC accuracy is 0.002%
Common mode rejection on DC of 140 dB.
Optional add-ons are available to expand the unit's capabilities.