Highlights!

 

1. External synchronization: The new HPLIA Plus supports external sync mode! The user can choose to synchronize the external input reference signal and use Input1 to demodulate the weak signal. The selection between internal and external synchronization modes is convenient for users to select modulation signals based on different experimental requirements flexibly.

 

2. A simple and economical multi-channel demodulation: In external synchronization mode, one of the modulation channels DDS outputs a sine wave phase-locked with the user reference signal, which can be used to synchronize other HPLIA Plus modules. This configuration makes multi-channel phase-locked demodulation possible by connecting several HPLIA Plus lock-in amplifiers in series.

Brand new UI: HPLIA PLUS supports both the PC display and the high-resolution touch screen on the module

Parameters

Overall
Dimension	15x15x7.6cm3
Weight	850g
Power supply	DC 5V/2A
Analog input
Frequency	5kHz ~ 400kHz
Input resistance	50 ohm
Input noise	10nV/Hz1/2 (>10 kHz)
Voltage	-1V to +1V
Input gain	1, 10
ADC	14 bit; 4 MSa/s
DDS analog output
Output	2 channels; -1V to +1V
Frequency	5kHz - 100kHz
Sawtooth sweep frequency	1Hz - 100 Hz
DAC	16 bit; 4 MSa/s
Lock-in demodulator
Time constant	10ms, 100ms (can be customized)
Filter bandwidth (Hz)	1000, 100 (can be customized)
Harmonic	1F, 2F, 3F, 4F
Reference phase resolution	1.0 degree
Output voltage	±10V

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  Application Case ：Parameter-tuning stochastic resonance as a tool to enhance wavelength modulation spectroscopy using a dense overlapped spot pattern multi-pass cell