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7230A General Purpose DSP Lock-in Amplifier

Highlights​​

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  • Remote control via software only (no built-in display)

  • Dual reference and dual harmonic detection allow signals at two different frequencies to be measured simultaneously

  • Frequency range 250 kHz to 1 mHz

  • Ethernet, USB, RS232 connectivity 

  • Compact design has no mechanical fans and is completely silent, especially useful for acoustic research

  • Software included - Acquire PC software, browser control software, LabView and SRInstComms

Applications and Software​

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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.

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  • Dual Reference—Simultaneously measure two signals at different frequencies

  • Spectral Display—See the power spectral density of the input signal plus noise

  • Dual Harmonic—Simultaneously measure two harmonics of the reference frequency

  • Virtual Reference—Make reference-free measurements even on noisy signals

  • VCO—Use external analog signal to control the frequency or amplitude of the precision internal oscillator

  • Synchronous Oscillator Output—Access the sinewave being used for demodulation, including any frequency multiplication and/or phase shift

Specifications​

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  • Display: Remote control only (no display)

  • Frequency range: 250 kHz to 1 mHz

  • Sample rate: Main ADC and analog outputs update rate of 1 MSa/s

  • Reference modes: Dual Reference, Dual Harmonic and Virtual Reference

  • Dynamic reserve: 100 dB for 1 nV / √Hz

  • Connectivity: Ethernet, USB, RS232

  • PC Software (included): Acquire, LabView, SRInstComms 

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