- GenRad 1689 Precision Impedance Meter
- The world's standard for AC resistance, low frequency inductance and Capacitance measurement
- 0.02% Measurement Accuracy and +/- 0.0001 Df
- Programmable Frequency 12 Hz - 100 kHz
- Widely accepted impedance meter in a metrology environment
- 1689 has a built-in 4 terminal kelvin fixture for testing axial and radial components
- 1689M has four BNC connectors for use with a wide variety of standard accessories
- GenRad 1840-A Output Power Meter
- Power output of oscillators, amplifiers, preamplifiers, transformers, transducers, and low-frequency lines.
- Output impedance, by adjustment of the load to yield maximum power indication.
- Frequency-response characteristics of amplifiers, transformers, and other audio-frequency devices.