Lock-in Amplifier

The lock-in amplifier is a device used for weak signal detection. Weak signals are often submerged in various noises. The lock-in amplifier can extract the weak signal from the noise and measure it accurately.
The lock-in amplifier is a weak signal detection method based on the mutual coherence method. Its key technique is phase-sensitive detection(PSD). The reference signal with the same frequency and fixed phase relationship as the signal to be tested is used as a reference to filter out the noise different from its frequency, thereby extracting produce useful signal components.

Application Area

 

Scanning microscope:                AFM、STM、SPM

Materials science:                      Carrier mobility, Carrier density, Hall effect, Ultrasonic materials  

Transport measurement:            Conductivity measurement, Impedance measurement

Noise represents:                       Noise density, Cross-correlation measurement

Optical experiment:                    Spectral analysis, Spectral measurement, THz measurement, TDLAS 

Sensor measuring:                     Gyroscope, Photoelectric sensor, Resonator, Accelerometer

Magnetic Sensor:                       SQUIDs, NV color center, Atomic Magnetometer, VSM

Biomedical:                                Microfluidic

Frequency: 1mHz to102kHz  
Time constants: 10µs to 3ks 
Dynamic reserve: >120 dB
Full-scale Sensitivity: 1 nV to 1 V 
Multiple-harmonic measurement 
FFT spectral analysis
5.6-inch color display

Frequency: 1mHz to102kHz  
Time constants: 10µs to 3ks 
Dynamic reserve: >120 dB
Full-scale Sensitivity: 1 nV to 1 V 
Multiple-harmonic measurement 
FFT spectral analysis
5.6-inch color display

Frequency: 50mHz to 120kHz
Time constants: 10µs to 3ks 
Full-scale Sensitivity: 1 nV to 1 V
Small-sized, easy integration
Performance comparable to SR830 
3.5-inch color display
Best cost performance ratio

Frequency: DC to 10MHz
Time constants: 30ns to 4.4ks
Dynamic reserve:  >120 dB
Full-scale Sensitivity: 1 nV to 1 V
Noise is low to 6nV// √Hz
Scope, Spectrum Analyzer
PID Controller, AM Modulation

Frequency: DC to 60MHz
Time constants: 30ns to 4.4ks
Dynamic reserve:  >120 dB
Full-scale Sensitivity: 1 nV to 1 V
Multiple-harmonic measurement 
Noise is low to 6nV// √Hz 
5.6-inch color display

Home > System Accessories > Lock-in Amplifier > Product Introduction