A 24-bit temperature measurement card with a USB 2.0 bus, supporting 1-channel RTD mode and 6-channel thermocouple mode, with no external conditioning required. It also supports multi-range voltage measurement, 16-channel bidirectional I/O, 2-channel counter/frequency measurement, and 3-channel PWM output.

Features Overview

The USB-XM2403 is a USB interface temperature data acquisition card. The USB-XM2403 features 7 analog inputs (configurable for temperature measurement or small signal measurement), 16 DIO channels, two counter/frequency measurement channels (DIO pins multiplexed), and 3 PWM outputs. The ADC chip supports programmable gain (×1, ×2, ×4, ×8, ×16, ×32, ×64, ×128), and each channel's amplification factor can be set individually via software. The logic control of the USB-XM2403 is implemented using a Field-Programmable Gate Array (FPGA) to enhance reliability. Additionally, digital ground (GND) and analog ground (AGND) are separated with single-point grounding to eliminate ground loop interference.

The USB master control chip of the USB-XM2403 card uses CYPRESS's CY68013A. This board is a high-speed, high-precision data acquisition board with a USB 2.0 bus, supporting hot-swapping and plug-and-play functionality.

Product Applications

The USB-XM2403 acquisition card can be directly connected to a computer's USB port to form data acquisition, temperature measurement, waveform analysis, and processing systems in various fields such as laboratories and product quality inspection centers. It can also be used to build industrial production process monitoring systems. Its main application scenarios include:

Temperature Measurement

Small Signal Measurement

Pulse Counting

Square Wave Frequency Measurement

I/O Control

Performance Features

1. Analog Input

A/D Converter: AD7124-8;

Conversion Accuracy: 24-bit;

Sampling Method: Multi-channel asynchronous sampling;

Effective Resolution: 18.9 bits;

Sampling Rate: 1 SPS to 4.8K SPS;

Temperature Measurement Accuracy: ±0.5℃;

Temperature Measurement Rate: 10 SPS;

Input Impedance: >10MΩ

AD Trigger Mode: Software trigger;

Analog Signal Input Mode: Differential;

Analog Signal Input Voltage Range: 0-3.3V;

Measurement Types: 6-channel thermocouple sensors + 1-channel RTD sensor, also suitable for small signal measurement;

RTD Type: 1-channel 3-wire PT100 (385);

Thermocouple Types: B, E, J, K, R, S, T, N-type thermocouples;

Configurable Analog Input Channels;

Flexible acquisition control, provides ADC internal register control interface for easy secondary development.

Programmable Ranges: ±2.5V, ±1.25V, ±625mV, ±312.5mV, ±156.25mV, ±78.125mV, ±39.0625mV, ±19.53125mV;

FIFO up to 2K words, supports continuous acquisition for real-time monitoring;

2. Digital Input/Output

Number of I/O Channels: 16 channels;

Logic Level: 5V TTL;

Channels can be arbitrarily configured to switch between DI/DO functions;

Input protection circuit, maximum input voltage 10V;

Single-channel current drive capability: 8mA;

Digital input TVS protection to prevent surge noise from damaging analog components;

3. Counter/Frequency Meter

Number of Channels: 2 channels;

Maximum Counting Frequency: 1 MHz;

Resolution: 32-bit;

Counting Method: Down-counting;

Counting Range: 0 to (2^32-1);

Counter initial value setting, initial value cannot be 0;

Counter functionality multiplexed with DIO8-15 pins;

Frequency Measurement: Automatic measurement of counter signals;

Frequency Measurement Duty Cycle: 1%-99%;

Logic Level: 5V TTL;

Measurement Frequency Range: 1.1 Hz - 1 MHz;

4. PWM Output

Number of Channels: 3 channels;

Output Frequency: 1 Hz – 2 MHz;

Output Duty Cycle: 1%-99%;

Logic Level: 5V TTL;

Continuous output / Specified number of pulses output;

5. System Parameters

Operating Voltage: DC 5V power supply / USB 5V power supply;

Power Consumption: <1W;

Board ID (0-15), supports multi-card operation;

Communication Interface: USB 2.0;

Operating Temperature: 0℃～70℃;

Storage Temperature: -10℃～85℃;

Dimensions:

Without casing: 122(L) ×87.5(W) (mm);

With casing: 145(L) X90(W) X 40(H) (mm);