Lock-in Amplifiers

Signal Recovery originated from the Princeton Applied Research, EG&G products for scientific instrumentation.  They are the inventors of the lock-in amplifier.  A lock-in amplifier is an instrument with dual capability.  It can recover signals in the presence of an overwhelming noise background or, alternatively, it can provide high resolution measurements of relatively clean signals over several orders of magnitude and frequency.

  • 9210 Multichannel Lock-in Amplifier

    • Complex AC and DC measurements on up to 10 different analog signals
    • One to five dual channel proccessing modules fittable per chassis
    • Lock-in detection from DC - 500 kHz
    • True synchronous measurement of all signals thanks to latest FPGA technology

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  • 7270 Lock-in Amplifier
    7270 General Purpose DSP Lock-in Amplifier

    • 1 mHz to 250 kHz operating frequency range
    • 1.0 MHz main ADC sampling rate
    • 10 µs to 100 ks output filter time constants
    • Dual Reference, Dual Harmonic and Virtual Reference operating Modes
    • Internal data buffer for recording instrument outputs at rates down to 1 µs per point
    • USB, RS232, and Ethernet computer interfaces

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  • 7230 Lock-in Amplifier
    7230 General Purpose DSP Lock-in Amplifier

    • 1 mHz to 120 kHz (250 kHz with 7230/99 option) operating frequency range
    • 1.0 MHz main ADC sampling rate
    • 10 µs to 100 ks output filter time constants
    • Dual Reference, Dual Harmonic and Virtual Reference operating Modes
    • Internal data buffer for recording instrument outputs at rates down to 1 µs per point
    • Ethernet, USB, and RS232 computer Interfaces
    • Free LabVIEW driver

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  • 7280 Lock-in Amplifier
    7280 Wide Bandwidth DSP Lock-in Amplifier

    • 0.5 Hz to 2 MHz operation
    • 7.5 MHz main ADC sampling Rate
    • 1 µs to 100 ks output time Constants
    • Dual Reference, Dual Harmonic and Virtual Reference modes
    • Frequency band display mode

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  • 7265 Lock-in Amplifier
    7265 Dual Phase DSP Lock-in Amplifier

    • 1m Hz to 250 kHz operation
    • Direct digital demodulation without down-conversion
    • Synchronous oscillator output for input offset reduction
    • Dual Reference, Dual Harmonic and Virtual Reference modes
    • Spectral display mode

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