LockInAmplifier-IconOutline.png

Lock-in Amplifier

One of eleven instruments in Moku:Lab

FIRFilterBuilder-IconOutline.png

Lock-in Amplifier

One of eleven instruments in Moku:Lab

LockInAmplifier-IconOutline.png

Badge-AppStore.png Badge-Python.png Badge-MatLab.png

Wirelessly configure and monitor your Lock-In's performance, all from an
intuitive iPad interface, or with Python and MATLAB (LabVIEW coming soon).

LockinAmplifier-TabletView.jpg

Badge-AppStore.png Badge-Python.png Badge-MATLAB.png

Wirelessly configure and monitor your Lock-In's performance, all from anintuitive iPad interface, or with Python and MATLAB (LabVIEW coming soon).

Overview

Features


  • Measure signals obscured by noise with more than 80 dB dynamic reserve
  • Block diagram view of the digital signal processing chain
  • Built-in probe points for signal monitoring and data logging
  • Internal or external demodulation modes including a PLL (phase-locked loop)
  • Dual-phase demodulation
  • Toggle between rectangular (X/Y mode) or polar coordinates (R/Theta mode)
  • Built-in PID Controller

Specifications


  • Demodulate with frequencies ranging from 1 mHz to 200 MHz with 3.55 μHz resolution
  • Phase shift precision of 0.001°
  • Input gain: -20 dB / 0 dB / + 24 dB / + 48 dB
  • 50 Ω / 1 MΩ input impedance
  • Adjustable time constant from 40 ns to 0.6 s
  • 6 or 12 dB/octave filter roll-off
  • Output gain range: ± 80 dB
  • LO output up to 200 MHz with variable amplitude
  • Ultra-fast data acquisition: snapshot mode up to 500 MS/s, continuous mode up to 1 MS/s

Overview

Features


  • Measure signals obscured by noise with more than 80 dB dynamic reserve
  • Block diagram view of the digital signal processing chain
  • Built-in probe points for signal monitoring and data logging
  • Internal or external demodulation modes including a PLL (phase-locked loop)
  • Dual-phase demodulation
  • Toggle between rectangular (X/Y mode) or polar coordinates (R/Theta mode)
  • Built-in PID Controller

Specifications


  • Demodulate with frequencies ranging from 1 mHz to 200 MHz with 3.55 μHz resolution
  • Phase shift precision of 0.001°
  • Input gain: -20 dB / 0 dB / + 24 dB / + 48 dB
  • 50 Ω / 1 MΩ input impedance
  • Adjustable time constant from 40 ns to 0.6 s
  • 6 or 12 dB/octave filter roll-off
  • Output gain range: ± 80 dB
  • LO output up to 200 MHz with variable amplitude
  • Ultra-fast data acquisition: snapshot mode up to 500 MS/s, continuous mode up to 1 MS/s

F.A.Q.


  • Can I adjust the corner frequency of the low-pass filter?

    Yes! It is adjustable from 237 mHz to 3.98 MHz via an iPad, Python or Matlab.


  • What is the maximum rate at which I can save data, and how many points can I save?

    The sample rate is dynamically adjusted by the horizontal zoom of the display, and can be set up to the full ADC sample rate of 500 MS/s. Currently you can save 16k points for two channels simultaneously. For longer term data taking use the new data logging mode. Logging to CSV is supported at up to 1 kS/s. For faster data rates use the .li binary format which allows logging to SD card at up to 100 kS/s and logging to the Moku:Lab's RAM at up to 1 MS/s.


  • Can the Lock-in Amplifier demodulate using an external source?

    Yes!! The September 2017 software update added support for direct demodulation with an external source, demodulation with a PLL (Phase-locked loop) locked to an external source, and the ability to modulate and demodulate at different frequencies.


  • Does the Lock-in include a PID controller for feedback applications?

    Yes! A PID controller was added in the September 2017 update. Update your iPad App to get all the new goodies.


  • The Lock-in can readout I and Q (X and Y). What about R and theta?

    Following the September 2017 free update, to switch from an X and Y readout to R and theta on the Moku:Lab App, tap the X Y block on the block diagram. The default theta gain is 0.8 V/cycle.


F.A.Q.


  • Can I adjust the corner frequency of the low-pass filter?

    Yes! It is adjustable from 237 mHz to 3.98 MHz via an iPad, Python or Matlab.


  • What is the maximum rate at which I can save data, and how many points can I save?

    The sample rate is dynamically adjusted by the horizontal zoom of the display, and can be set up to the full ADC sample rate of 500 MS/s. Currently you can save 16k points for two channels simultaneously. For longer term data taking use the new data logging mode. Logging to CSV is supported at up to 1 kS/s. For faster data rates use the .li binary format which allows logging to SD card at up to 100 kS/s and logging to the Moku:Lab's RAM at up to 1 MS/s.


  • Can the Lock-in Amplifier demodulate using an external source?

    Yes!! The September 2017 software update added support for direct demodulation with an external source, demodulation with a PLL (Phase-locked loop) locked to an external source, and the ability to modulate and demodulate at different frequencies.


  • Does the Lock-in include a PID controller for feedback applications?

    Yes! A PID controller was added in the September 2017 update. Update your iPad App to get all the new goodies.


  • The Lock-in can readout I and Q (X and Y). What about R and theta?

    Following the September 2017 free update, to switch from an X and Y readout to R and theta on the Moku:Lab App, tap the X Y block on the block diagram. The default theta gain is 0.8 V/cycle.