Brand: Altai Technology

Model: USB2381

The Altai Technology USB2381 is a buffered multifunctional counter module specifically designed for industrial applications. Its core functions and features can be systematically summarized as follows:

I. Core Function Design

1. Multi-Channel Counter Configuration
Supports 4 independent 32-bit counters, each equipped with three PFI (Programmable Function Interface) multiplexed input channels and one PFI multiplexed output channel. The input channels support a maximum input frequency of up to 5MHz, with a minimum detectable pulse width of 100ns, meeting the requirements for high-frequency signal acquisition.

2. PFI Channel Multiplexing Mechanism

Static Digital I/O: Supports 20 programmable digital inputs/outputs (TTL level compatible), configurable as general-purpose DI/DO ports.
Dynamic Function Expansion: Multiplexed channels can serve as counter trigger sources (e.g., edge triggering, external clock input) or pulse generation outputs (e.g., PWM control), enabling flexible signal scheduling.

3. Multifunctional Counter Modes
Function Type                                                 Specific Modes
Input Measurement (CI)           Edge counting, frequency/period measurement, pulse width detection, encoder position measurement (incremental)
Output Generation (CO)         Programmable pulse output (PWM), finite/continuous waveform generation
II. Key Performance Parameters
1. Signal Processing Capability

Sampling Methods: Supports on-demand single-point sampling, finite continuous sampling, and deep continuous acquisition (1K-point FIFO buffer ensures data integrity).
Trigger Control: Input channels support pause triggering, output channels support start/pause triggering, suitable for precision timing control scenarios.

2. Electrical and Environmental Adaptability
Protection Design: Built-in signal protection circuitry with strong anti-interference capability, meeting industrial field reliability requirements.
Operating Temperature: Industrial-grade wide-temperature design (typical range: -40℃ to +85℃).
III. Typical Application Scenarios

Electronic Product Quality Testing
Used for circuit board signal timing verification and pulse width consistency testing, leveraging PFI multiplexed channels for synchronous multi-parameter monitoring. For example, simultaneously acquiring pulse frequencies from four sensors on a production line and controlling test process start/stop via DIO channels.

Servo Control and Motion Systems

Encoder Interface: Directly interfaces with incremental encoders (e.g., Omron E6B2-CWZ1X), enabling closed-loop motor position feedback via A/B/Z phase inputs.
PWM Output Control: Generates precise pulse signals for driving servo motors, supporting speed curve adjustment in position mode.

Industrial Process Monitoring
In fluid control or mechanical assembly lines, utilizes counter functions to count workpieces passing through, while coordinating actuators (e.g., cylinder start/stop) via DIO to build automated response chains.

IV. Selection and Deployment Recommendations

Expansion Requirements Matching

For higher channel density (8 counters), the same series USB2383 module is available.
For complex system integration scenarios, it is recommended to pair with multifunctional DAQ cards such as Altai Technology's USB3160A for synchronized analog acquisition and control.

Development Support
Provides standard API interfaces and LabVIEW drivers, supporting rapid secondary development. User cases demonstrate compatibility with Java or Python for data retrieval, adapting to custom analysis platforms.