1900-A
The General Radio 1900-A Wave Analyzer was introduced in Catalog R (1963) and remained available through Catalog 1973.
The Type 1900-A Wave Analyzer is designed to measure and analyze electrical signals between 20 Hz and 54 kHz at bandwidths as narrow as 3 Hz. It has a built-in tracking generator whose frequency is synchronized with the analyzer frequency. This generator can be used as a source for bridges or networks, and the output can be measured with high selectivity to reduce noise and harmonics.
Applications include analyzing filters and frequency response of amplifiers or networks.
When coupled with a Type 1521-B Graphic Level Recorder, a permanent record of the spectrum of interest can be produced. The combination of 1900-A and 1521-B make up the Type 1910 Recording Wave Analyzer.
The 1900-A is a complex instrument but major components are housed in their respective shielded enclosures. These sub-assemblies are connected using RCA and Jones type connectors, simplifying service.
Specifications
- Frequency Range: 20 to 54,000 Hz
- Accuracy of Calibration: ±(½% +5 Hz) up to 50 kHz;. ±1% beyond 50 kHz
- Incremental Frequency Dial (ΔF): ±100 Hz. accuracy is ±2 Hz below 2 kHz, ±5 Hz up to 50 kHz
- Selectivity: three bandwidths (3, 10, and 50 Hz) selected by switch
- Input Impedance: 1 MΩ on all ranges
- Input Voltage Range: 30 μV to 300 V full scale
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