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
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Dexinmag® • 2024