HTC DM-97 Digital Multimeter Documentation
The HTC DM-97 Digital Multimeter is a versatile and accurate measuring instrument designed for various IoT applications. It measures voltage, current, resistance, continuity, and temperature with high precision. This documentation provides a comprehensive guide on how to use the HTC DM-97 Digital Multimeter in different contexts, along with code examples to get you started.
Measurement ranges:
+ Voltage: 0.1mV to 1000V
+ Current: 0.1mA to 10A
+ Resistance: 0.1 to 40M
+ Temperature: -20C to 1000C
Resolution: 0.1mV, 0.01mA, 0.1, 0.1C
Accuracy: 0.5% for voltage and current, 1% for resistance and temperature
Connectivity: USB (CDC and FTDI compatible)
The HTC DM-97 Digital Multimeter can be controlled and data can be read using various programming languages, including Python, C++, and Java. The device is supported by multiple operating systems, including Windows, macOS, and Linux.
### Example 1: Basic Measurement using Python
This example demonstrates how to read voltage measurements from the HTC DM-97 Digital Multimeter using Python.
# Open the serial connection to the multimeter
ser = serial.Serial('COM3', 9600, timeout=1) # Replace COM3 with your device's serial port
# Set the multimeter to voltage measurement mode
ser.write(b'VOLT
')
# Read the voltage measurement
response = ser.readline()
voltage = float(response.decode().strip())
print(f'Voltage: {voltage:.2f} V')
# Close the serial connection
ser.close()
```
### Example 2: Temperature Measurement using C++
This example shows how to read temperature measurements from the HTC DM-97 Digital Multimeter using C++.
```cpp
#include <iostream>
#include <serial/serial.h>
int main() {
// Open the serial connection to the multimeter
serial::Serial ser;
ser.setPort("COM3"); // Replace COM3 with your device's serial port
ser.setBaudrate(9600);
ser.setTimeout(serial::Timeout::simpleTimeout(1000));
ser.open();
// Set the multimeter to temperature measurement mode
ser.write("TEMP
");
// Read the temperature measurement
std::string response = ser.readline();
float temperature = std::stof(response);
std::cout << "Temperature: " << temperature << " C" << std::endl;
// Close the serial connection
ser.close();
### Example 3: Continuity Testing using Java
This example demonstrates how to use the HTC DM-97 Digital Multimeter for continuity testing using Java.
```java
import java.io.IOException;
import jssc.SerialPort;
import jssc.SerialPortException;
public class ContinuityTest {
public static void main(String[] args) {
// Open the serial connection to the multimeter
SerialPort serialPort = new SerialPort("COM3"); // Replace COM3 with your device's serial port
try {
serialPort.openPort();
serialPort.setParams(9600, 8, 1, 0);
// Set the multimeter to continuity testing mode
serialPort.writeBytes("CONT
".getBytes());
// Read the continuity test result
byte[] response = serialPort.readBytes();
String result = new String(response);
if (result.contains("CONT")) {
System.out.println("Circuit is continuous");
} else {
System.out.println("Circuit is not continuous");
}
// Close the serial connection
serialPort.closePort();
} catch (SerialPortException e) {
e.printStackTrace();
}
}
}
```
These examples demonstrate the basic usage of the HTC DM-97 Digital Multimeter in various programming languages. For more advanced usage and customization, refer to the device's documentation and the programming language's libraries.
