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.
 ==Specifications==
 * '''RANGES OF MEASUREMENT'''
-* '''Voltage:''' ±30, 100, and 300 mV; ±1, 3, and 10 V; dc full scale.
+* '''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.
+* '''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'''
-* '''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==
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 GR 1230-A Bottom View.jpg
 GR 1230-A V1 V2 Close-up.jpg
 </gallery>
 [[Category:Meters]]
 [[Category:Detectors Amplifiers]]