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> Hewlett packard 333A distortion analyzer
Hewlett packard 333A distortion analyzer
The HP 333A distortion analyzer is a solid state instrument for measuring distortion on ac voltages.
The 333A includes two control loops that automatically tune both legs of a bridge circuit that rejects the fundamental when the rejection circuit is initially set within the range of the loops.
Harmonics are indicated up to 3 MHz. The distortion characteristics can be monitored at the OUTPUT connectors with an oscilloscope, a TRMS voltmeter, or a wave analyzer.
The voltmeter inside the 333A can be used separately for general purpose voltage and gain measurements.
The 333A includes automatic fundamental nulling.
* Distortion measurement range: 5 Hz to 600 kHz
* Distortion measurement accuracy: Distortion levels of 0.1% to 100 % full scale are measured in seven ranges for frequencies of 5 Hz to 600 kHz
* Frequency ranges: X1, manual null tuned to less than 3% of set level; total frequency hold-in 0.5% about true manual null.
X10 through X10 k, manual null tuned to less than 10% of set level; total frequency hold-in 1% about true manual null
* Frequency calibration accuracy: Better than 5% from 5 Hz to 300 kHz; better than 10% from 300 kHz to 600 kHz
* Input level for distortion measurements: 0.3 Vrms for 100% set level (up to 300 V may be attenuated to set level reference)
* DC isolation: Signal ground can be 400 Vdc from external chassis
* Voltmeter range: 300 V to 300 Vrms full scale (13 ranges) 10 dB per range
* Voltmeter accuracy: 2%, 5% depending on voltage range and frequency
* Voltmeter frequency range: 5 Hz to 3 MHz
* Voltmeter residual noise measurements: <25 Vrms or <30 Vrms depending on termination
* Output: For input frequencies from 20 Hz to 600 kHz - 0.1 Vrms 0.01 V open circuit for full scale meter deflection; 0.05 Vrms 0.005 V into 2 k for full scale meter deflection
* Automatic nulling mode: Set level - at least 0.2 Vrms
* 5 Hz to 100 Hz: Meter reading within 0 to +3 dB of manual null
* 100 Hz to 600 kHz: Meter reading within 0 to +1.5 dB of manual null
* High-pass filter: 3 dB point at 400 Hz with 18 dB per octave roll off
* Option 01 meter with VU characteristics meets FCC requirements for AM, FM, and TV broadcasting
