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Key Features

  • 600 MHz operation frequency
  • 2 independent lock-in units
  • 2 high-performance signal generators
  • 4 independent harmonics per lock-in unit
  • High-resolution 12-bit scope with 65k samples
  • Frequency Response Analyzer (FRA)
  • FFT Spectrum Analyzer
  • LabOne® toolset


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The Zurich Instruments UHFLI is a digital lock-in amplifier that covers the frequency range from DC to 600 MHz. In addition to providing the highest operation frequency among all commercial lock-in amplifiers, the UHFLI offers the lowest time constant of 30 ns for demodulation – resulting in a demodulation bandwidth that exceeds 5 MHz. In combination with the widest choice of available options and the instrument control software LabOne, the UHFLI is the flagship of all Zurich Instruments products and represents the state of the art of today's scientific instrumentation.


    Digitizer Option

    Key Features

    • 2 signal inputs, 12-bit, 1.8 GSa/s
    • 128 MSa memory per channel
    • Dual-trace oscilloscope with FFT
    • Segmented memory for up to 32'768 scope shots
    • Fast, continuous data streaming
    • Hardware trigger engine with additional trigger inputs and outputs
    • Additional channels: boxcar, demodulators, Arithmetic Unit, and PID data
    • Full LabOne® integration on user interface and at API level


    Multi-Frequency Option

    Key Features

    • 6 additional oscillators
    • Free oscillator selection for all demodulators (and boxcar)
    • Arbitrary choice of frequency for all 8 demodulators
    • Output adder for combination of up to 8 sinusoidal signals


    AM/FM Modulation Option

    Key Features

    • 2 independent AM/FM modulation units with 3 frequency components each
    • Simultaneous amplitude modulation and demodulation
    • Simultaneous frequency modulation and demodulation
    • Adjustable filter settings for each frequency component
    • Dual-modulator (signal output) configuration
    • Harmonic sideband analysis (2 sidebands)
    • Sideband separation (single-sided modulation)


    Quad PID/PLL Controller Option

    Key Features

    • 4 independent PID controllers
    • PID Advisor (for adjustment of target bandwidth)
    • Auto Tune PID (for minimization of average PID error signal)
    • High-speed operation with up to 300 kHz loop filter bandwidth
    • Input parameters including demodulator data, auxiliary inputs, auxiliary outputs, and Arithmetic Unit
    • Output parameters including output amplitudes, oscillator frequencies, demodulator phase, auxiliary outputs, and signal output offsets
    • Phase unwrap for demodulator phase data (± 1024 π), e.g. for optical PLLs
    • Low-pass filter for derivative branch


    Boxcar Averager Option

    Key Features

    • 600 MHz repetition rate
    • 2 boxcar units
    • 2 periodic waveform analyzers
    • Baseline suppression
    • Zero acquisition dead time
    • Harmonic analyzer with 512 lines
    • Graphical setting of boxcar and baseline windows


    Rubidium Atomic Clock Option

    Key Features

    • High frequency accuracy by atomic reference
    • Extreme temperature stability
    • Excellent aging performance
    • Minimal phase noise
    • Long-term result reproducibility


    Arbitrary Waveform Generator Option

    Key Features

    • Dual 600 MHz arbitrary waveform generator
    • 14-bit resolution, 2 markers per channel, 1.8 GSa/s
    • 128 MSa waveform memory per channel
    • Amplitude modulation with internal and external phase reference
    • Cross-trigger engine for low-latency triggering and sequence branching
    • Field-upgradeable option


    Pulse Counter Option

    Key Features

    • 225 MHz maximum count rate
    • 4 counter modules
    • 4 signal inputs with adjustable discriminator level
    • 5 modes: manual, triggered, free, gated, and pulse tagging
    • Background subtraction with 2 counter modules
    • Count integration
  • 600 MHz Boxcar Averager

    Key Features

    • 600 MHz operation frequency
    • 2 independent lock-in units
    • 4 independent harmonics per lock-in unit
    • 2 high-performance signal generators
    • 2 boxcar units
    • 2 periodic waveform analyzers
    • Baseline suppression
    • Zero acquisition dead time
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