HPLIA Plus Mini Lock-in Amplifier with a Touchscreen

The HPLIA series mini dual-channel lock-in amplifiers are designed with the industry-popular configuration of FPGA + ARM. In 2022, we have launched an upgraded version, HPLIA Plus, which supports an external reference signal input. A screen on top of the module displays the real-time status and data. The new features will help you achieve more flexible modulation and demodulation!

Customer cases:

1. A Prototype of ppbv-Level Midinfrared CO2 Sensor for Potential Application in Deep-Sea Natural Gas Hydrate Exploration

2. A Prototype of High-Precision Carbon Isotopic Ratio Sensing System for CO₂ Dissolved in Water




  • Details

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.


HPLIA PLUS supports both the PC display and the high-resolution touch screen on the module

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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