1230-A: Difference between revisions
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* '''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. | |||
==Links== | ==Links== | ||
Revision as of 09:33, 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 ±300 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.
