SANWA CD800A Digital Multimeter Documentation

Voltage

AC/DC voltage measurement with a range of 0.1mV to 1000V

Current

AC/DC current measurement with a range of 0.1mA to 10A

Resistance

Resistance measurement with a range of 0.1 to 20M

Capacitance

Capacitance measurement with a range of 10nF to 20mF

Frequency

Frequency measurement with a range of 10Hz to 10MHz

Continuity

Continuity testing with audible buzzer

Diode test

Diode test with voltage and current measurement

Key Features

High-accuracy measurement: The SANWA CD800A offers high-precision measurements with an accuracy of 0.5% for voltage and current measurements.
True RMS measurement: The multimeter can measure True RMS values for AC voltage and current, ensuring accurate readings even in non-sinusoidal waveforms.
Auto-ranging: The device features auto-ranging, which automatically adjusts the measurement range for optimal accuracy and speed.
Data hold function: The multimeter has a data hold function that allows users to freeze measurements on the display for easy reading and recording.
Large backlit LCD display: The device features a large, clear LCD display with backlighting, making it easy to read measurements in low-light environments.
Safety features: The SANWA CD800A has built-in safety features, including overload protection and automatic shut-off, to prevent damage and ensure user safety.
Battery-powered: The device is powered by a 9V battery, making it portable and convenient for on-site measurements.
Compact design: The multimeter has a compact, ergonomic design that fits comfortably in the hand, making it easy to use in tight spaces.

Specifications

Measurement ranges

+ Voltage	0.1mV to 1000V (AC/DC)
+ Current	0.1mA to 10A (AC/DC)
+ Resistance	0.1 to 20M
+ Capacitance	10nF to 20mF
+ Frequency	10Hz to 10MHz

Accuracy

0.5% for voltage and current measurements

Resolution

0.1mV, 0.1mA, 0.1, 1nF, 1Hz

Operating temperature

0C to 40C (32F to 104F)

Storage temperature

-20C to 60C (-4F to 140F)

Power supply

9V battery ( included)

Dimensions

155 x 75 x 38mm (6.1 x 2.9 x 1.5 inches)

Weight

Approximately 250g (8.8 oz)

Applications

The SANWA CD800A Digital Multimeter is suitable for a wide range of applications, including

Electrical troubleshooting and diagnosis

Circuit analysis and design

Quality control and inspection

Education and training

Hobbyist and DIY projects

Certifications and Compliance

The SANWA CD800A meets the following certifications and standards

CE certified

RoHS compliant

IEC 61010-1 and IEC 61010-2-030 safety standards

By offering a comprehensive range of measurement functions, advanced features, and high accuracy, the SANWA CD800A Digital Multimeter is an ideal tool for professionals and hobbyists in various fields.

Pin Configuration

SANWA CD800A Digital Multimeter Pinout Guide
The SANWA CD800A Digital Multimeter is a popular and versatile multimeter used for measuring various electrical parameters. The device has a set of pins that enable connections to different circuits and devices for measurement. This guide provides a detailed explanation of each pin, their functions, and how to connect them properly.
Pinout Structure:
The SANWA CD800A Digital Multimeter has a 4-mm diameter probe connector with 4 pins, labeled as follows:
Pin 1: Black (COM)
Function: Common ground or negative terminal
Description: This pin is the common ground or negative terminal for all measurements. It serves as a reference point for voltage, current, and resistance measurements.
Connection: Connect to the ground or negative terminal of the circuit or device being measured.
Pin 2: Red (VmA)
Function: Voltage, Ohm, and milli-Ampere measurement
Description: This pin is used for measuring voltage, resistance, and current (in milli-Ampere range). It is the positive terminal for voltage and resistance measurements and the current input for current measurements.
Connection:
+ For voltage measurement: Connect to the positive terminal of the circuit or device being measured.
+ For resistance measurement: Connect to one end of the resistor or component being measured.
+ For current measurement (in mA range): Connect in series with the circuit or device being measured, ensuring the current flows into the multimeter.
Pin 3: Yellow (A)
Function: Ampere measurement
Description: This pin is used for measuring current in the Ampere range (up to 10A).
Connection: Connect in series with the circuit or device being measured, ensuring the current flows into the multimeter. Note that this pin should only be used for current measurements in the Ampere range.
Pin 4: No connection
Function: Not connected internally
Description: This pin is not internally connected and should not be used for any measurements.
Important Connection Guidelines:
Always ensure the multimeter is set to the correct measurement function and range before making connections.
Use the correct probes or leads for the measurement being made.
Connect the probes or leads to the correct pins to avoid damage to the multimeter or the circuit being measured.
Never connect the multimeter to a live circuit without proper safety precautions.
Always follow the manufacturer's instructions and safety guidelines for the multimeter and the circuit being measured.
By following this pinout guide and connection guidelines, you can safely and accurately use your SANWA CD800A Digital Multimeter for various electrical measurements.

Code Examples

SANWA CD800A Digital Multimeter Documentation

Overview

The SANWA CD800A is a high-precision digital multimeter designed for measuring various electrical parameters such as voltage, current, resistance, continuity, and capacitance. This component is widely used in various industries, including electronics, automotive, and industrial automation.

Pinout and Interfaces

The SANWA CD800A has a compact design with a 3-digit LCD display and a rotary switch for selecting measurement functions. The device has the following interfaces:

Rotary switch: Selects measurement function (V, A, , etc.)
 LCD display: 3-digit display for measuring values
 Test leads: Red (positive) and black (negative) leads for connecting to the device under test

Code Examples

### Example 1: Measuring Voltage using an Arduino Board

In this example, we will use an Arduino board to measure the voltage across a resistive load using the SANWA CD800A.

Hardware Requirements:

SANWA CD800A Digital Multimeter
 Arduino Board (e.g., Arduino Uno)
 Resistive load (e.g., 1 k resistor)
 Breadboard and jumper wires

Software Requirements:

Arduino IDE (version 1.8.x or later)

Code:
```c++
const int multimeterPin = A0;  // Analog input pin for multimeter reading

void setup() {
  Serial.begin(9600);
  pinMode(multimeterPin, INPUT);
}

void loop() {
  int multimeterValue = analogRead(multimeterPin);
  float voltage = multimeterValue  (5.0 / 1023.0);
  Serial.print("Voltage: ");
  Serial.print(voltage);
  Serial.println(" V");
  delay(1000);
}
```
Explanation:

1. Connect the positive (red) lead of the SANWA CD800A to the analog input pin (A0) of the Arduino board.
2. Connect the negative (black) lead of the SANWA CD800A to the ground pin of the Arduino board.
3. Connect the resistive load (1 k resistor) across the test leads.
4. Upload the code to the Arduino board and open the serial monitor.
5. The Arduino board will read the voltage value from the SANWA CD800A and display it on the serial monitor.

### Example 2: Measuring Current using a Raspberry Pi

In this example, we will use a Raspberry Pi to measure the current drawn by a DC motor using the SANWA CD800A.

Hardware Requirements:

SANWA CD800A Digital Multimeter
 Raspberry Pi (e.g., Raspberry Pi 4)
 DC motor
 Breadboard and jumper wires

Software Requirements:

Raspberry Pi OS (version 2020-02-13 or later)
 Python 3.x

Code:
```python
import time
import RPi.GPIO as GPIO

# Set up GPIO library
GPIO.setmode(GPIO.BCM)

# Define multimeter pin
multimeter_pin = 17

# Set up multimeter pin as input
GPIO.setup(multimeter_pin, GPIO.IN)

while True:
    # Read multimeter value
    multimeter_value = GPIO.input(multimeter_pin)
    # Convert to current value (assuming 10mA/V)
    current = multimeter_value  10
    print("Current: {:.2f} mA".format(current))
    time.sleep(1)
```
Explanation:

1. Connect the positive (red) lead of the SANWA CD800A to a GPIO pin (e.g., GPIO 17) on the Raspberry Pi.
2. Connect the negative (black) lead of the SANWA CD800A to the ground pin on the Raspberry Pi.
3. Connect the DC motor to a power source and connect the motor leads to the test leads.
4. Run the Python script on the Raspberry Pi.
5. The Raspberry Pi will read the current value from the SANWA CD800A and display it on the console.

Important Notes:

Always follow proper safety precautions when working with electrical circuits and devices.
 Ensure the SANWA CD800A is set to the correct measurement function and range before taking readings.
 The code examples provided are for illustration purposes only and may require modifications for specific use cases.