VK701S four-channel serial port type 24-bit data acquisition card

VK701S serial port RS232 24-bit data acquisition card       

    VK701S is a serial port type high-speed 24-bit data acquisition card developed by Shenzhen Vkinging Electronics Co., Ltd., which supports both virtual and physical serial ports. The VK701S acquisition card has features such as true differential input, 4-channel synchronous acquisition, sampling accuracy of up to 24 bits, maximum sampling rate of 400 ksps (N sampling mode), and precise pre gain. The VK701S uses multiple high-precision 24-bit ADC units and a front-end differential amplifier module developed in cooperation with our company for many years, making this product have the advantages of high speed, high resolution, high accuracy, ultra-low noise, high common mode rejection ratio, wide measurement range, and low temperature drift. It is suitable for various occasions of precision and high-speed acquisition.

 

Applications
 

*Weak signal measurement collection       *High impedance differential signal measurement
*High resolution signal measurement        *Industrial environment application data collection
 

Port diagram
 

The measured and collected sinusoidal wave vP-P is 3.5mV
 

Physical dimension drawing

And acquisition card using the software
 

    The VK701S serial port data acquisition card can work in common operating systems such as WIN11/Win10/WIN7, LINUX, and provides a dynamic link library called by common programming languages such as Python, VB, VC, C #, C++Builder, VB, Delphi, Labview/Labwindows, and Matlab. The programming function interface is simple and easy to use, and it is easy to write applications. It provides routines such as Python, VB, VC, C#, C++Builder, VB, Delphi, Labview/Labwindows, and Matlab.

Product Features

* ADC up to 24 bit resolution, USB interface *Input range: 0~±1mV, 20mV, 500mV, 1V, 2V, 5V, 10V adjustable * High rate: 400ksps; Maximum sampling rate of 100ksps per channel * 4 IO ports, configurable input and output * Configurable 2 channels PWM * Configurable 1 count input * Configurable 1 DAC output * High-precision reference standard: 2.5V ±0.05% * ADC input common mode signal rejection ratio: >130dB

* ADC input common mode signal rejection ratio: >130dB * Differential input, can measure differential signal * High-speed USB data transmission, convenient for hot swapping * ADC Non-linearity THD: >100dB * Temperature drift: <6 mmp/°C * Metal shielded shell: strong anti-interference ability * The whole machine adopts ultra-low noise industrial grade components, low temperature drift, strong anti-interference ability

                                      unit, reference value, range

USB power supply voltage: V  5 4.5~5.5

USB power supply current: mA 50 30~100

ADC analog port input voltage V +-10

Digital port input VL low level V 0 -0.3~1

Digital port input VH high level V 3.3 2~5.5

Digital port output voltage V 3.3 3.2~3.4

Digital port output drive current (when outputting high level) mA 10

Digital port input sink current (at 5V input voltage) uA 170

ADC maximum sampling rate kps 100

Minimum resolution voltage (input range selection -1mV~+1mV) uV 0.1

Aout output voltage V 0~3.3

PWM output frequency (P0.2/PWM1, P0.3/PWM2 ports) Hz 0~100k

PWM duty cycle (P0.2/PWM1, P0.3/PWM2 ports)% 0~100

Counter input maximum frequency (P0.4/CNT port) Hz 100K

Counter input maximum count value 2^64 power

Working temperature: degrees Celsius -20~85

Storage temperature degrees Celsius -40~ 105

AD analog input function
*AD type: Bipolar 24 bits (Bit) *Sampling rate: 4 channels with a total sampling rate of 400k, each channel has a maximum of 100K samples per second
*Input impedance: 1000M ohm *Voltage input range: 4 channels ±1mV ~ ±10V eight range options

DA analog output function
*Number of channels: 1 channel 10 bits (Bit), output voltage range (OutputRange): 0-3.3V

DI digital input and output function
*Number of channels: 4, compatible level voltage: +5V or +3.3V

PWM function
*Number of channels: 2 independent PWM adjustable 1~100khz range, 0.0~1.0 duty cycle adjustable

Counting function
*Pulse counting measurement: 1 way, the high level is 3.3V or 5V, the maximum count is 2^64

Product Size

Capture card size 112mm (length) * 80mm (width) * 23mm (height)
Packing size: 150 (length) * 150 (width) * 50mm (height)
Weight: 150 grams

Parts List

1. Capture card*1

2. High-speed data cable (with magnetic ring)*1

3. Data packages such as drivers and routines (download from network disk)

"VK701S_Serial Capture Card" data download:https://pan.baidu.com/s/1R3oNNzoZNyN0T2Wx4mKTew 
Extraction code:701S