1605-A
The General Radio 1605-A Impedance Comparator was introduced in 1956 Catalog O and remained available through Catalog T 1968.
Specifications
- Impedance Ranges:
Resistance: 2 Ω to 20 MΩ. Capacitance: 40 pF to 500 μF. Inductance: 20 μh to 10,000 H.
- Internal Oscillator Frequencies: 100 Hz, 1 kHz, 10 kHz, 100 kHz.
- Meter Ranges:
Impedance Magnitude Difference: ±0.3%, ± 1%, ±3%, ± 1O% full scale. Phase Angle Difference: ±0.003, ±0.01, ±0.03, ± 0.1 radian full scale.
- Voltage Across Standard and Unknown: approx. 0.15 V.
