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Since their invention back n the 1960's, lock-in amplifiers have been used whenever the need arises to measure the amplitude and/or phase of a signal of known frequency in the presence of noise.
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The model 7270 sets a new standard for general-purpose DSP lock-in amplifiers.
The model 7230 is a new concept in general-purpose DSP lock-in amplifiers.
The SIGNAL RECOVERY model 7265 uses the latest digital signal processing (DSP) technology to extend the operating capabilities of the lock-in amplifier to provide the researcher with a very versatile unit suitable both for measurement and control of experiments.
The SIGNAL RECOVERY model 7225 offers a cost-effective solution to the researcher needing the performance provided by DSP demodulation but not requiring the additional features or higher operating frequencies of the models 7280 and 7265.
Over the past few years. the SIGNAL RECOVERY models 5209 (single-phase) and 5210 (dual-phase) have become the benchmark lock-in amplifiers against which others are judged.
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