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8CH USB Logic Analyzer

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Component Name

8CH USB Logic Analyzer

Overview

The 8CH USB Logic Analyzer is a powerful and versatile tool designed for debugging, testing, and analyzing digital circuits and microcontrollers. This device captures and displays the logical signals of up to 8 channels simultaneously, providing a comprehensive understanding of digital signal behavior. The analyzer connects to a computer via a USB interface, making it easy to use and integrate into various development environments.

Functionality

The 8CH USB Logic Analyzer is used to

Capture and display digital signal waveforms of up to 8 channels

Analyze and decode digital protocols such as SPI, I2C, UART, and more

Measure signal frequency, pulse width, and duration

Trigger on specific events or patterns in the signal

Log and save signal data for later analysis

Interface with various development software and tools

Key Features

  • 8-Channel Input: The analyzer can capture and display up to 8 digital channels simultaneously, allowing for the analysis of complex digital circuits and interactions.
  • High-Speed Sampling: The device can sample digital signals at speeds of up to 100MSa/s (100 million samples per second), providing a detailed and accurate representation of signal behavior.
  • Protocol Analysis: The analyzer can decode and display various digital protocols, including SPI, I2C, UART, and more, making it easier to understand communication between devices.
  • Triggering: The device supports various trigger modes, including edge, pulse, and pattern triggering, allowing users to focus on specific events or conditions in the signal.
  • USB Interface: The analyzer connects to a computer via a USB interface, providing a convenient and easy-to-use connection.
  • Software Compatibility: The device is compatible with various software tools, including Sigrok, Saleae Logic, and PulseView, making it easy to integrate into existing development environments.
  • Compact Design: The analyzer is compact and lightweight, making it easy to use in a variety of settings, from laboratory benches to embedded systems development.

Input Channels

8

Sampling Rate

Up to 100MSa/s

Input Voltage

0-5V

Input Impedance

100k

Trigger Types

Edge, pulse, and pattern

Interface

USB 2.0

Operating System

Windows, macOS, and Linux compatible

Dimensions

60mm x 40mm x 20mm

Weight

50g

Applications

The 8CH USB Logic Analyzer is suitable for a wide range of applications, including

Digital circuit design and debugging

Microcontroller development and testing

Embedded system development and integration

IoT development and prototyping

Digital signal processing and analysis

Conclusion

The 8CH USB Logic Analyzer is a powerful and versatile tool that provides a comprehensive understanding of digital signal behavior. With its high-speed sampling, protocol analysis, and compact design, it is an essential tool for anyone working with digital circuits and microcontrollers.

Pin Configuration

  • 8CH USB Logic Analyzer Documentation
  • Pinout Explanation
  • The 8CH USB Logic Analyzer is a versatile tool for debugging and analyzing digital signals in various electronic devices. It features 8 channels for simultaneous signal capture, making it an ideal choice for troubleshooting complex digital systems. The device has a total of 16 pins, which are explained below:
  • Channel Pins (1-8)
  • CH0-CH7: These 8 pins are the input channels for the logic analyzer. Each channel can capture digital signals with a maximum frequency of 100 MHz. The channels are labeled from CH0 to CH7, and each channel has a corresponding LED indicator on the board.
  • Ground and Power Pins (9-12)
  • GND: Pin 9 is the ground pin, which is used as a reference point for the device's power supply and signal measurements.
  • 3.3V: Pin 10 is the power pin, which provides a 3.3V DC power supply to the device.
  • 5V: Pin 11 is an optional power pin, which can be used to provide a 5V DC power supply to the device (not recommended, as the device is designed to operate at 3.3V).
  • GND: Pin 12 is another ground pin, which provides additional grounding for the device.
  • USB Connection Pins (13-16)
  • D-: Pin 13 is the USB data minus (D-) pin, which is used for USB communication.
  • D+: Pin 14 is the USB data plus (D+) pin, which is used for USB communication.
  • ID: Pin 15 is the USB ID pin, which is used for device identification and configuration.
  • VCC: Pin 16 is the USB VCC pin, which provides power to the device from the host computer.
  • Connecting the Pins
  • To connect the 8CH USB Logic Analyzer to a target device, follow these steps:
  • 1. Connect the ground pin (GND, Pin 9) to a suitable ground point on the target device.
  • 2. Connect the power pin (3.3V, Pin 10) to a 3.3V power source on the target device (if required).
  • 3. Connect the channel pins (CH0-CH7, Pins 1-8) to the digital signals on the target device that need to be analyzed.
  • 4. Connect the USB connection pins (D-, D+, ID, and VCC, Pins 13-16) to a host computer using a standard USB cable.
  • Important Notes
  • Make sure to connect the ground pin (GND, Pin 9) to a suitable ground point on the target device to prevent damage to the logic analyzer or the target device.
  • Use caution when connecting the power pin (3.3V, Pin 10) to ensure that the target device's power supply is compatible with the logic analyzer's power requirements.
  • Avoid connecting the 5V power pin (Pin 11) to the target device, as it may cause damage to the logic analyzer or the target device.
  • By following these guidelines, you can successfully connect the 8CH USB Logic Analyzer to a target device and start analyzing digital signals.

Code Examples

8CH USB Logic Analyzer Documentation
Overview
The 8CH USB Logic Analyzer is a powerful tool for debugging and analyzing digital signals in various electronic systems. It provides 8 channels of logic analysis, allowing users to capture and analyze signals from multiple sources simultaneously. This documentation provides an overview of the component's features, specifications, and code examples to help users integrate it into their projects.
Features and Specifications
8 channels of logic analysis
 Maximum sampling rate: 24MHz
 Input voltage range: 0V to 5V
 USB 2.0 interface for connection to PC
 Compatible with Windows, macOS, and Linux operating systems
 Includes software for capturing, analyzing, and exporting data
Code Examples
### Example 1: Using the 8CH USB Logic Analyzer with Python for Signal Capture
In this example, we will use the `pyusb` library in Python to communicate with the 8CH USB Logic Analyzer and capture a signal on all channels.
Python Code
```python
import usb.core
import usb.util
# Find the device
dev = usb.core.find(idVendor=0x03eb, idProduct=0x6124)
# Set the configuration
dev.set_configuration()
# Claim the interface
cfg = dev.get_active_configuration()
intf = cfg[(0,0)]
# Set the sampling rate and trigger mode
intf.write(0x01, b'x01x00x00x00')  # 24MHz sampling rate, trigger mode = 0
# Capture data on all channels
data = intf.read(0x81, 1024, 1000)  # Read 1024 bytes of data from all channels
# Print the captured data
for i in range(8):
    channel_data = data[i128:(i+1)128]
    print(f"Channel {i}: {', '.join([f'0x{x:02x}' for x in channel_data])}")
```
This code example assumes that the 8CH USB Logic Analyzer is connected to the PC and configured for 24MHz sampling rate and trigger mode 0. The code captures 1024 bytes of data from all channels and prints the data in hexadecimal format.
### Example 2: Using the 8CH USB Logic Analyzer with C++ for Triggered Capture
In this example, we will use the `libusb` library in C++ to communicate with the 8CH USB Logic Analyzer and capture a signal on all channels using a triggered capture mode.
C++ Code
```c
#include <libusb.h>
#include <iostream>
int main() {
    libusb_context ctx = libusb_init(NULL);
    libusb_device_handle devh = libusb_open(0x03eb, 0x6124, NULL);
// Set the configuration
    libusb_claim_interface(devh, 0);
// Set the sampling rate and trigger mode
    unsigned char cmd[] = { 0x01, 0x00, 0x00, 0x00 };  // 24MHz sampling rate, trigger mode = 1
    libusb_control_transfer(devh, 0x21, 0x09, 0x01, 0x00, cmd, 4, 1000);
// Set the trigger condition (e.g., rising edge on channel 0)
    unsigned char trig[] = { 0x02, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00 };
    libusb_control_transfer(devh, 0x21, 0x09, 0x01, 0x01, trig, 8, 1000);
// Capture data on all channels
    unsigned char data[1024];
    libusb_bulk_transfer(devh, 0x81, data, 1024, &transferred, 1000);
// Print the captured data
    for (int i = 0; i < 8; i++) {
        std::cout << "Channel " << i << ": ";
        for (int j = 0; j < 128; j++) {
            std::cout << std::hex << (int)data[i128 + j] << " ";
        }
        std::cout << std::endl;
    }
libusb_release_interface(devh, 0);
    libusb_close(devh);
    libusb_exit(ctx);
    return 0;
}
```
This code example assumes that the 8CH USB Logic Analyzer is connected to the PC and configured for 24MHz sampling rate and trigger mode 1 (triggered capture). The code sets the trigger condition to capture data on all channels when a rising edge is detected on channel 0. The captured data is then printed to the console in hexadecimal format.
Note: The code examples provided are for illustration purposes only and may require modification to suit specific use cases and project requirements.