1230-A: Difference between revisions
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The '''General Radio 1230-A Electrometer and DC Amplifier''' was introduced in 1956 Catalog O and remained available through Catalog T 1968. | The '''General Radio 1230-A Electrometer and DC Amplifier''' was introduced in 1956 Catalog O and remained available through Catalog T 1968. | ||
==Specifications== | ==Specifications== | ||
* '''RANGES OF MEASUREMENT''' | * '''RANGES OF MEASUREMENT''' | ||
* '''Voltage:''' ±30, 100, and 300 mV; ±1, 3, and 10 V; | * '''Voltage:''' ±30, 100, and 300 mV; ±1, 3, and 10 V; DC full scale | ||
* '''Current:''' ±1 mA | * '''Current:''' ±1 mA DC, full scale, to ±0.3 pA full scale; Measured in terms of voltage | ||
* '''Resistance:''' direct reading from 300 kΩ to 10 TΩ full scale; There are 16 ranges, two per decade. Voltage across the unknown resistance is 9.1 V | * '''Resistance:''' direct reading from 300 kΩ to 10 TΩ full scale; There are 16 ranges, two per decade. Voltage across the unknown resistance is 9.1 V | ||
* '''ACCURACY''' | * '''ACCURACY''' | ||
* '''Voltage:''' ±2% of full scale on the five highest ranges, ±4% of full scale on the 30 mV range | * '''Voltage:''' ±2% of full scale on the five highest ranges, ±4% of full scale on the 30 mV range | ||
* '''Current:''' ±3% of full scale from 1 mA to 1 nA, ±10% of full scale from 300 pA to 0.3 pA | * '''Current:''' ±3% of full scale from 1 mA to 1 nA, ±10% of full scale from 300 pA to 0.3 pA | ||
* '''Resistance:''' ±3% from 300 kΩ to 10 MΩ at full scale (low-resistance end), ±8% from 3 MΩ to 10 TΩ | * '''Resistance:''' ±3% from 300 kΩ to 10 MΩ at full scale (low-resistance end), ±8% from 3 MΩ to 10 TΩ | ||
==Links== | ==Links== | ||
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GR 1230-A Bottom View.jpg | GR 1230-A Bottom View.jpg | ||
GR 1230-A V1 V2 Close-up.jpg | GR 1230-A V1 V2 Close-up.jpg | ||
</gallery> | </gallery> | ||
[[Category:Meters]] | [[Category:Meters]] | ||
[[Category:Detectors Amplifiers]] | [[Category:Detectors Amplifiers]] | ||
Revision as of 14:11, 25 March 2024
The General Radio 1230-A Electrometer and DC Amplifier was introduced in 1956 Catalog O and remained available through Catalog T 1968.
Specifications
- RANGES OF MEASUREMENT
- Voltage: ±30, 100, and 300 mV; ±1, 3, and 10 V; DC full scale
- Current: ±1 mA DC, full scale, to ±0.3 pA full scale; Measured in terms of voltage
- Resistance: direct reading from 300 kΩ to 10 TΩ full scale; There are 16 ranges, two per decade. Voltage across the unknown resistance is 9.1 V
- ACCURACY
- Voltage: ±2% of full scale on the five highest ranges, ±4% of full scale on the 30 mV range
- Current: ±3% of full scale from 1 mA to 1 nA, ±10% of full scale from 300 pA to 0.3 pA
- Resistance: ±3% from 300 kΩ to 10 MΩ at full scale (low-resistance end), ±8% from 3 MΩ to 10 TΩ
