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USB Lock-In Amplifier 250


250 kHz 2-phase Lock-In Amplifier


The unique USBLockIn250 is a compact Lock-in amplifier based on highest quality digital design. Its parameters are comparable with the eLockIn203. The control via USB-Interface allows to virtually connect an infinity number of USBLockIn250 to one PC. The integrated PID control allows easy integartion into more complex setups. It can be simultaneously operated with PCI-Lockin Amplifiers AMU2.4.


USB_Lock-in_Amplifier_250



Parameters - Datasheet


  • 2-phase digital lockin amplification
  • < 10 nV/Hz1/2, typical 2.2 nV/Hz1/2 @ 100kHz
  • 10 nV to 10 V sensitivity
  • Integrated PID Control
  • 1 µs time constant in sync mode
  • 10 µs to 5 s time constant in Butterworth filter mode
  • Roll-Off 6, 12, or 24 dB/oct
  • Remote control via USB 2.0
  • PLL input for external triggering: sine wave > 20 mV rms or TTL
  • IN: Sigma-Delta-A/D-converter with 20 MSPS sampling rate
  • 0.1 Hz up to 250 kHz, 135 dB dynamic reserve
  • Synchronous filtering over full frequency range
  • 14-bit Sine Wave Generation 0.1 mVrms to 7 Vrms
  • Output Amplitude Accuracy < 0.2 % + 10 µV (Out to In, DC to 250 kHz)
  • Spectra Acquisition up to 250 kHz (1 MHz)
  • Digital Results: float
  • User-friendly software interface
  • Two Auxiliary Analogue Outputs with up to 1 µs Group Delay up to 250 kSPS
  • Open source software examples and ready-to-use User Interface Software
  • 32/64Bit Windows Driver for Windows XP, 7, 10
  • Examples for Remote Control in Delphi, C, Python, Scilab, Matlab®


  • remote control via USB


    TTL input and output


    2 analog output channels


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