ALIENTEK DM40C 디지털 멀티미터, 오실로스코프 및 신호 발생기 사용 설명서

1. 서론

Thank you for choosing the ALIENTEK DM40C. This device is a professional 4.5-digit digital multimeter, oscilloscope, and signal generator integrated into a single handheld unit. It offers high precision measurements, a 50M sample rate oscilloscope, and various waveform generation capabilities, making it suitable for a wide range of electrical testing and diagnostic applications.

This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your DM40C device. Please read it thoroughly before use.

2. 안전 정보

Always observe safety precautions when using electrical testing equipment to prevent personal injury or damage to the device.

• 일반 안전: Ensure the device is in good working condition before use. Do not operate if damaged.
• 권tage 측정: For DC-DC or high voltage measurements above 36V, it is recommended to use the 자동+ mode. This mode skips the millivolt (mV) range to prevent mismeasurement, sparking, and potential damage. The default AUTO mode includes the mV range, which may not be suitable for higher voltag에스.
• MCX Connector Usage: The MCX pin sizes for the alligator clip and oscilloscope probe differ. The alligator clip's inner pin is larger. Do not attach the alligator clip to the CHA/CHB (oscilloscope analog channels). The alligator clip is intended only for the OUT channel (waveform output) to avoid poor contact or damage to the oscilloscope's analog channels.
• 전류 측정 : Ensure the circuit is de-energized before connecting the device for current measurements.
• 퓨즈 : The unit is fused. If a fuse blows, replace it with one of the specified type and rating.
• 테스트 리드: Use only the provided or equivalent high-quality test leads. The included leads are fine-tipped, suitable for small electronics. For higher-current or heavier work, consider investing in more robust leads.

3. 제품 오버view

The ALIENTEK DM40C combines three essential tools into one compact device: a digital multimeter, an oscilloscope, and a signal generator. It features a high-resolution IPS touchscreen for clear data display and intuitive control.

그림 3.1: The ALIENTEK DM40C unit shown with its standard accessories, including test leads, probe leads, and a USB-C cable.

그림 3.2: This image illustrates the core capabilities of the DM40C: a high-precision multimeter, a 10-bit ADC oscilloscope with 50M sampling rate, and a signal generator.

주요 특징:

• 멀티미터: 4.5-digit (59999 count) with high precision and 5ppm reference source.
• 오실로스코프: 10-bit ADC, 50MHz sampling rate, 10MHz bandwidth, 64kpts memory.
• 신호 생성기: Generates various waveforms (Sine, Sawtooth, Triangular, Square).
• 표시하다: 3.5-inch IPS touchscreen (480x320 resolution).
• 힘: Rechargeable battery providing over 10 hours of operation.

그림 3.3: The device features a 3.5-inch IPS touchscreen (480x320 resolution) for clear display and intuitive interaction.

4. 설정

4.1. 배터리 충전

The DM40C is powered by an internal rechargeable battery. Before first use, fully charge the device using the provided USB-C cable and a compatible USB power adapter (not included). The charging indicator on the device will show the charging status.

4.2. 테스트 리드 연결

Connect the test leads to the appropriate input jacks on the right side of the device. The common (COM) jack is typically used for the black lead. The VΩHz°C jack is for voltage, resistance, frequency, and temperature measurements. The A mA uA jack is for current measurements. Ensure connections are secure.

4.3. 초기 전원 켜기

Press and hold the power button to turn on the device. The IPS touchscreen will illuminate, displaying the main interface. Follow any on-screen prompts for initial setup or calibration if presented.

5. 사용 설명서

5.1. 일반 운영

• 전원 켜기/끄기: 전원 버튼을 길게 누르세요.
• 메뉴 탐색: 터치스크린을 사용하여 메뉴를 탐색하고 기능을 선택하세요.
• 데이터 보유 : 디스플레이에 현재 표시되는 값을 고정합니다.
• Relative Measurement (RLE): Measure the difference between a stored reference value and the current reading.
• 데이터 로깅: Record measurement data over time.
• 추세 그래프: Visualize measurement data trends graphically.

5.2. 멀티미터 모드

The DM40C offers a comprehensive range of multimeter functions. Select the desired measurement mode from the main interface.

그림 5.1: The automatic measurement feature simplifies operation by automatically selecting the correct range for voltage (0.01mV-1000V DC, 0.01mV-750V AC) and current (0.01uA-10A) without manual mode switching.

• 자동 측정: The device can automatically detect and select the appropriate range for voltage (DC: 0.01mV-1000V, AC: 0.01mV-750V) and current (0.01uA-10A).
• 권tag측정 방식(AC/DC): Connect leads to COM and VΩHz°C. Select AC or DC voltage mode. Remember to use 자동+ 높은 볼륨의 경우tage measurements (refer to Safety Information).
• 전류 측정(AC/DC): Connect leads to COM and A mA uA. Ensure the circuit is open and the device is connected in series. The innovative 3-hole design allows fully automatic current measurement across μA/mA/A ranges.
• 저항 측정: Connect leads to COM and VΩHz°C.
• 정전용량 측정: Connect leads to COM and VΩHz°C.
• 다이오드 테스트: Connect leads to COM and VΩHz°C. The device provides a 4-stag전자 권tag뚜렷한 청각적 표시기가 있는 전자파 낙하 측정.


그림 5.2: This screen capture details the diode measurement function with multiple voltage drop indications and the fast continuity test feature, including resistor measurement capabilities.

• 연속성 테스트: Connect leads to COM and VΩHz°C. An ultra-fast test with an audible indicator.
• 주파수 측정: Connect leads to COM and VΩHz°C.
• 온도 측정 : Requires a compatible temperature probe (not included). Connect the probe to the VΩHz°C and COM jacks.
• AC+DC Mixed Measurement: The DM40C supports simultaneous display of both AC and DC components for complex signals.


그림 5.3: The display demonstrates the device's ability to perform True RMS measurements, simultaneously display AC and DC components, and visualize data trends over time with adjustable time bases.

5.3. 오실로스코프 모드

The integrated oscilloscope provides waveform visualization and analysis. Connect the oscilloscope probe to the CHA/CHB input.

• 기본 설정: Select oscilloscope mode from the main menu. Adjust vertical scale (V/div) and horizontal time base (s/div) as needed.
• 트리거링: Set trigger level and type (edge, pulse, etc.) to stabilize waveforms.
• 측정: The oscilloscope can display various waveform parameters such as peak-to-peak voltage, 주파수, 듀티 사이클.

5.4. 신호 발생기 모드

The DM40C can generate various test signals. Connect the output to the OUT channel using the alligator clip (refer to Safety Information regarding MCX connector usage).

• 파형 선택: Choose from Sine wave, Sawtooth wave, Triangular wave, or Square wave.
• 주파수 조정 : Set the desired output frequency (1Hz to 50KHz for most waveforms, up to 10MHz for square wave).
• Amp광도 조정: Adjust the peak-to-peak voltage (0.5Vpp to 3.0Vpp).
• 듀티 사이클: Adjustable for Square wave (0-100%).

6. 유지관리

6.1. 청소

부드러운 천으로 정기적으로 장치를 청소하십시오.amp 천을 사용하십시오. 연마성 세제나 용제는 사용하지 마십시오. 청소하기 전에 기기의 전원을 끄고 모든 전원에서 분리하십시오.

6.2. 배터리 관리

To prolong battery life, avoid fully discharging the battery frequently. If storing the device for an extended period, charge it to approximately 50% and store in a cool, dry place.

그림 6.1: The DM40C incorporates safety isolation for multimeter communication and is powered by a rechargeable battery providing over 10 hours of operation.

6.3. 펌웨어 업데이트

ALIENTEK may release firmware updates to add features or fix bugs. Check the official ALIENTEK website for the latest firmware and instructions on how to update your device. Exercise caution when installing third-party applications or firmware not directly from the manufacturer.

7. 문제 해결

• 기기의 전원이 켜지지 않습니다: Ensure the battery is charged. Connect the USB-C cable and attempt to power on while charging.
• 부정확한 판독값: Check test lead connections. Ensure the correct measurement mode is selected. Verify the battery level.
• No oscilloscope waveform: Check probe connection to CHA/CHB. Adjust vertical scale and time base. Verify trigger settings.
• Sparking during voltag전자 측정: Immediately switch to 자동+ mode for high voltage measurements (above 36V) to prevent this. Refer to Safety Information.
• Damage to oscilloscope input: Ensure alligator clips are ~ 아니다 connected to CHA/CHB. Alligator clips are for the OUT channel only. Refer to Safety Information.
• 블루투스 연결 문제: Ensure your device has the latest firmware (version 2.2 or higher for Bluetooth functionality, if available for your model). Note that Bluetooth may only support multimeter functions.

8. 사양

The following table outlines the key specifications for the ALIENTEK DM40C.

그림 8.1: A comprehensive table outlining the technical specifications, measurement ranges, and accuracy for the DM40A, DM40B, and DM40C models across various functions including voltage, 전류, 저항, 커패시턴스, 주파수 및 온도.

9. 보증 및 지원

ALIENTEK products are designed for reliability and performance. For warranty information, please refer to the documentation included with your purchase or visit the official ALIENTEK website. For technical support, troubleshooting assistance, or inquiries about replacement parts, please contact ALIENTEK customer service through their official channels.