1230-A

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General Radio 1230-A
electrometer and dc amplifier
General Radio 1230-A Electrometer and DC Amplifier

Available from 1956 to 1968

Manuals
(All manuals in PDF format unless noted otherwise)

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.

Links

Photos