1822: Difference between revisions

Latest revision as of 10:20, 3 December 2024

General Radio 1822

Digital Voltmeter Calibrator

Available from 1969 to 1970

Manuals

Manual Needed.

Catalog History

Document	Year	Page
Catalog U	1970	257

(All manuals in PDF format unless noted otherwise)

The General Radio 1822 Digital Voltmeter Calibrator was introduced in Catalog T Supplement (1969) and available until Catalog U (1970).

The Type 1822 is designed to produce accurate voltages for the testing and calibration of digital voltmeters. It can be used as a precise laboratory voltage reference from 100 μV DC to 1111.1 V DC. The output voltage is displayed using a mechanical digital display with automatic units and decimal placement. It can set to any value with five-digit resolution, the resolution is adjustable.

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 1 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)

Links

Experimenter March 1969 describing Type 1822

Photos

Circuit Boards

1822-2720
1822-2720
1822-2731
1822-2731
1822-4750
1822-4750
1822-4756
1822-4756
1822-4761
1822-4761
1822-4766
1822-4766
1822-4770
1822-4770
1822-4776
1822-4776
1822-4780
1822-4780
1822-4785
1822-4785
1822-4790
1822-4790
1822-4796
1822-4796

@@ Line 7: / Line 7: @@
 |caption=General Radio 1822 Digital Voltmeter Calibrator
 |series=
-|introduced=1970
+|introduced=1969
 |discontinued=1970
 |designers=
@@ Line 14: / Line 14: @@
 {{Catalog History}}
 }}
-The {{Title|General Radio 1822 Digital Voltmeter Calibrator}} was available in {{Catalog U}} only.
+The {{Title|General Radio 1822 Digital Voltmeter Calibrator}} was introduced in {{Catalog T Supplement}} and available until {{Catalog U}}.
-The Type 1822 is designed to produce accurate voltages for the testing and calibration of digital voltmeters.  It can be used
+The Type 1822 is designed to produce accurate voltages for the testing and calibration of digital voltmeters.
-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.
+It can be used as a precise laboratory voltage reference from 100 μV DC to 1111.1 V DC.
+The output voltage is displayed using a mechanical digital display with automatic units and decimal placement. It can set to any value with five-digit resolution, the resolution is adjustable.
+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 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 Impedance:''' <0.5 Ω on 1 V through 1 kV ranges; 200 Ω on 1 mV through 100 mV ranges; A 1 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
+* '''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)
@@ Line 34: / Line 38: @@
 <gallery>
 GR 1822 Front.jpg
+GR 1822 DVM calibrator.jpg
 GR 1822 Side.jpg
 GR 1822 Rear.jpg
@@ Line 48: / Line 53: @@
 GR 1822 Inside Bottom Front Panel.jpg
 GR 1822 Inside Bottom Middle Left.jpg
 </gallery>