The DC Voltmeter / DC Source combines a high-impedance digital dc voltmeter and a low-current dc source.  The dc Source is designed to supply a user-adjustable reference voltage. The digital display of the dc voltmeter
provides accurate voltage readings.  The module is used mainly in the study of analog-to-digital conversions and of digital-to-analog conversions.

The dc source voltage is adjustable through a ten turn potentiometer. Its value can be read from the voltage display by pressing a push button on the front panel of the module.

The dc voltmeter can be used on one of two ranges selected through a push button. The measured voltage is indicated on a 3½ digit display. The high input impedance of the dc voltmeter allows for a precise reading without disturbing the circuits being tested.

Specifications

Power Requirements: Connection to the Enclosure / Supply Regulator, Model 9420 (not included)

DC Voltmeter
Input Impedance: 1 MΩ
Ranges: ±2 V, ±20 V
Resolution: 1 mV on ±2 V range / 10 mV on ±20 V range

DC Source Output: -2 V to +2 V, 25 mA maximum

Display: 3½ digit

Physical Characteristics
Dimensions (H x W x D) 83 x 142 x 212 mm (3.3 x 5.6 x 8.3 in)
Net Weight 0.7 kg (1.5 lb)