1822

The General Radio 1822 Digital Voltmeter Calibrator was available in Catalog U (1970) only.

General Radio 1822

Digital Voltmeter Calibrator

Available from 1970 to 1970

Manuals

Manual Needed.

Catalog History

Document	Year	Page
Catalog U	1970	257

(All manuals in PDF format unless noted otherwise)

The Type 1822 is designed to produce accurate voltages for the testing and calibration of digital voltmeters. It can be used as a precise voltage reference from 100 μV dc to 1111.1 V dc for laboratory use. The output voltage can set to any value with five digit resolution, the resolution is adjustable. The output voltage is displayed using a mechanical digital display with automatic units and decimal placement. External programming is available through a rear panel connector along with an internal automatic step function. Other features include an interference voltage function, polarity reversal, and adjustable output impedance.

Specifications

Output Voltage: 100 μV dc to 1111.1 V dc in 7 decade ranges
Output Impedance: <0.5 Ω on 1 V through 1 kV ranges; 200 Ω on 1 mV through 100 mV ranges; A l kΩ, 10 kΩ, or 100 kΩ output resistor can be added to above impedances by front-panel selector switch
Output Current: 10 mA at full range on 1, 10, and 100-V ranges; 1 mA on 1 kV range
Accuracy: ±(30 ppm of voltage + 10 ppm of full range + 3 μV) on all ranges except ±(50 ppm of voltage + 10 ppm of full range) on 1-kV range; Accuracy of rear-panel voltages ≤111 mV, ±(30 ppm of voltage + 10 ppm of range +0.5 μV)