Handheld Oscilloscope (2 Channel, 40MHz) User Manual

1. Introduction

Thank you for choosing the multicomp PRO MP720780 Handheld Oscilloscope. This device is a versatile, portable instrument combining the functions of a 2-channel, 40MHz digital oscilloscope and a full-featured digital multimeter (DMM). Designed for engineers, technicians, and hobbyists, it offers high performance and ease of use for various electrical measurement and troubleshooting tasks. Please read this manual thoroughly before operating the device to ensure safe and correct usage.

2. Safety Information

Always observe the following safety precautions to prevent personal injury and damage to the instrument:

• Do not exceed the maximum input ratings: AC 750V, DC 1000V for DMM functions.
• Use only specified probes and accessories: Ensure probes are rated for the voltage and current being measured.
• Inspect the device before use: Check for any physical damage, exposed wiring, or loose connections. Do not use if damaged.
• Avoid wet or damp conditions: Do not operate the device in rain or wet environments.
• Power off before connecting/disconnecting: Always turn off the device and disconnect from the power source before connecting or disconnecting probes or cables.
• Service by qualified personnel only: Refer all servicing to qualified service personnel.
• Observe all local safety codes: Follow all applicable local and national safety regulations.

3. What's in the Box

Upon unpacking, please verify that all items listed below are included:

• Handheld Oscilloscope (DSO)
• Mains Cord
• User Manual
• Oscilloscope Probe
• USB Type-C Cable
• Multimeter Test Leads
• Carrying Bag

4. Product Overview

The multicomp PRO MP720780 features a compact design with a clear display and intuitive controls. Below are images illustrating the device's key components and ports.

Figure 4.1: Front view of the oscilloscope, showing the display, function buttons, navigation keys, and multimeter input jacks.

Figure 4.2: Angled view of the device, demonstrating the integrated kickstand for convenient desktop use.

Figure 4.3: The oscilloscope held in hand, highlighting its compact and portable design.

Figure 4.4: Side view of the device, illustrating the USB Type-C communication interface for data transfer and charging.

Figure 4.5: Rear view of the oscilloscope, showing the kickstand mechanism and ventilation.

5. Setup

Follow these steps for initial setup of your handheld oscilloscope:

1. Charging the Device: Connect the provided USB Type-C cable to the device's USB port and the other end to a suitable USB power adapter (not included) or a computer. The battery indicator on the screen will show charging status.
2. Power On/Off: Press and hold the power button (usually marked with a power symbol) to turn the device on or off.
3. Probe Connection (Oscilloscope): For oscilloscope measurements, connect the BNC end of the oscilloscope probe to the CH1 or CH2 input on the top of the device. Ensure the connection is secure.
4. Test Lead Connection (Multimeter): For multimeter measurements, insert the red test lead into the VΩ+C jack and the black test lead into the COM jack. For current measurements, use the A or mA jacks as appropriate.
5. Probe Compensation (Oscilloscope): Before making accurate measurements, compensate your oscilloscope probe. Connect the probe to a channel and the probe tip to the probe compensation output (usually a square wave signal on the device). Adjust the probe's compensation trimmer until the square wave is flat-topped on the display.

6. Operating Instructions

The MP720780 offers both oscilloscope and digital multimeter functionalities. Use the 'Mode' button to switch between these modes.

6.1 Oscilloscope Mode

In oscilloscope mode, the device displays waveforms, allowing for detailed analysis of electrical signals. Key features include:

• Channel Selection: Use the 'CH1/2' button to toggle between Channel 1 and Channel 2, or view both simultaneously.
• Vertical Scale (Voltage): Adjust the vertical scale (Volts/Div) using the navigation buttons to fit the waveform on the screen. Input couplings include DC, AC, and Ground.
• Horizontal Scale (Time): Adjust the horizontal scale (Time/Div) using the 'HOR' button and navigation keys to view the desired time duration of the signal.
• Triggering: The device supports Edge trigger type. Use the 'Trig/Δ' button to adjust trigger level and position. Trigger modes include Auto, Normal, and Single.
• Acquisition Modes: Select between Sample and Peak Detect acquisition models for different signal characteristics.
• Record Length: The device offers 6K record lengths for capturing detailed waveforms.
• Waveform Refresh Rate: Experience a fast 10,000wfrms/s waveform refresh rate for dynamic signal observation.
• Auto Setup: Press the 'Auto' button for automatic adjustment of vertical and horizontal settings to display a stable waveform.
• Measurement: Use the 'Measure Range' button to display automatic measurements like frequency, peak-to-peak voltage, etc.
• Saving Waveforms: Use the 'Save' button to store waveform data for later review.

6.2 Digital Multimeter (DMM) Mode

In DMM mode, the device functions as a precise digital multimeter. It offers 4½ digits resolution and supports the following measurement modes:

• Voltage (V): Measure DC and AC voltage. Maximum input voltage is AC 750V and DC 1000V.
• Current (A): Measure DC and AC current using the appropriate input jacks (A or mA).
• Resistance (Ω): Measure resistance.
• Capacitance (Farad): Measure capacitance.
• Diode Test: Test diodes for forward voltage drop.
• Continuity Test: Check for circuit continuity with an audible buzzer.

Use the navigation buttons to select the desired DMM function after entering DMM mode.

7. Maintenance

Proper maintenance ensures the longevity and accuracy of your device.

• Cleaning: Use a soft, dry cloth to clean the exterior of the device. For stubborn dirt, a slightly damp cloth with mild detergent can be used, ensuring no liquid enters the device. Do not use abrasive cleaners or solvents.
• Battery Care: For optimal battery life, avoid fully discharging the battery frequently. If storing the device for an extended period, charge it to about 50% and recharge every few months.
• Storage: Store the device in a cool, dry place, away from direct sunlight, extreme temperatures, and high humidity. Use the provided carrying bag for protection during transport.
• Calibration: While the device is factory calibrated, periodic calibration by qualified personnel may be necessary to maintain measurement accuracy over time, especially in professional applications.

8. Troubleshooting

If you encounter issues with your multicomp PRO MP720780, refer to the following common problems and solutions:

9. Specifications

Detailed technical specifications for the multicomp PRO MP720780 Handheld Oscilloscope:

• Model Number: MP720780
• Product Dimensions: 1.5 x 3.78 x 7.8 inches
• Weight: 1.32 Pounds
• Oscilloscope Channels: 2
• Bandwidth: 40MHz
• Sample Rate: 250MSa/s
• Record Length: 6K
• Waveform Refresh Rate: 10,000wfrms/s
• Input Couplings: DC, AC, Ground
• Trigger Type: Edge
• Trigger Models: Auto, Normal, Single
• Acquisition Model: Sample & Peak Detect
• Digital Multimeter Function: 4½ digits
• DMM Measurement Modes: V, A, Ohm, Farad, Diode, Continuity
• Maximum Input Voltage (DMM): AC 750V, DC 1000V
• Communication Interface: USB Type-C

10. Warranty and Support

This multicomp PRO product is designed and manufactured to high-quality standards. For specific warranty details, please refer to the documentation provided at the time of purchase or contact your retailer. In general, a 30-day return policy is typically offered by sellers for new products.

For technical support, troubleshooting assistance beyond this manual, or service inquiries, please contact multicomp PRO customer support or your authorized distributor. You can often find contact information on the manufacturer's official website or through your purchase platform.

Manufacturer: Multicomp Pro

First Available Date: December 12, 2022