1. Introduction
This manual provides detailed instructions for the safe and effective use of the Micsig DP/DP Series High Voltage Differential Probes. These probes are designed for measuring high voltage differential signals with oscilloscopes, offering features such as low noise floor, excellent high-voltage amplitude-frequency characteristics, and industry-leading common mode rejection capability.
The DP/DP Series probes are built with cutting-edge SigOFIT technology, ensuring high accuracy, excellent bandwidth flatness, and low noise performance. They feature a BNC interface and Type-C power input for versatile connectivity.
2. Package Contents
Verify that all items listed below are present in your package. If any items are missing or damaged, contact Micsig support.
Image 2.1: The complete package contents of the Micsig High Voltage Differential Probe DP/DP Series, including the probe unit, input leads, power adapter, and USB-C cable.
- High Voltage Differential Probe Unit
- Input Test Leads (Red and Black)
- Alligator Clips (Red and Black)
- USB Type-C Power Cable
- Power Adapter
- User Manual (this document)
3. Product Components
Familiarize yourself with the main components of the differential probe.
Image 3.1: A close-up view of the Micsig High Voltage Differential Probe unit, showing the main body, input terminals, and output BNC connector.
Image 3.2: Detailed view of the Micsig High Voltage Differential Probe's output section, highlighting the BNC Interface, 5MHz Bandwidth Limit button, Quick Zero button, and Dual Range Selection button.
- Probe Unit: The main body containing the differential amplifier circuitry.
- Input Terminals: Connect the test leads to these terminals (red for positive, black for negative).
- BNC Interface: Connects the probe output to the oscilloscope input.
- 5MHz Bandwidth Limit Button: (Available on 100MHz-200MHz versions, except DP7000) Limits the bandwidth to 5MHz for noise reduction when measuring lower frequency signals.
- Quick Zero Button: Used to quickly zero the probe's output offset.
- Dual Range Selection Button: Toggles between different attenuation ranges (e.g., 50X, 500X) to accommodate various input voltage levels.
- Type-C Power Input: For connecting the USB Type-C power cable.
4. Setup Instructions
- Power Connection: Connect the USB Type-C power cable to the probe unit and the power adapter. Plug the power adapter into a suitable power outlet.
- Oscilloscope Connection: Connect the BNC interface of the differential probe to an input channel of your oscilloscope using a BNC cable.
- Input Lead Connection: Attach the red and black test leads to the corresponding input terminals on the differential probe. Ensure a secure connection.
- Attaching Probes to Circuit: Connect the alligator clips or other appropriate accessories to the test leads. Carefully attach the red clip to the positive test point and the black clip to the negative test point of the circuit under test.
- Power On: Ensure the oscilloscope is powered on and configured for the appropriate input settings (e.g., 1MΩ input impedance).
Image 4.1: The Micsig High Voltage Differential Probe connected to an oscilloscope, demonstrating a typical setup for differential voltage measurements.
5. Operating Instructions
5.1. Powering On and Initial Check
Once connected, the probe's power indicator LED should illuminate. Before making measurements, perform a quick zero adjustment.
5.2. Quick Zero Adjustment
With the input leads disconnected from any circuit, press the Quick Zero button on the probe unit. This calibrates the probe to output zero volts when no differential voltage is present, ensuring accurate measurements.
5.3. Range Selection
The Dual Range Selection button allows you to switch between different attenuation ratios (e.g., 50X, 500X). Select the appropriate range based on the expected voltage of the signal you are measuring. A higher attenuation ratio is used for larger input voltages.
- Lower Attenuation (e.g., 50X): For smaller differential voltages, providing higher sensitivity.
- Higher Attenuation (e.g., 500X): For larger differential voltages, preventing saturation and ensuring safe operation.
5.4. Bandwidth Limit (Optional)
For models that support it (100MHz-200MHz versions, except DP7000), the 5MHz Bandwidth Limit button can be pressed to reduce the probe's bandwidth to 5MHz. This is useful for reducing high-frequency noise when measuring lower frequency signals, improving signal clarity on the oscilloscope.
5.5. Making Measurements
After selecting the appropriate range and performing a quick zero, connect the probe leads to the desired test points on the circuit. Observe the waveform on the oscilloscope. Adjust the oscilloscope's vertical scale and time base as needed to properly display the signal.
6. Maintenance
- Cleaning: Keep the probe unit and accessories clean. Use a soft, dry cloth to wipe surfaces. Do not use abrasive cleaners or solvents.
- Storage: Store the probe in a dry, dust-free environment when not in use. Protect the BNC connector and input terminals from damage.
- Cable Care: Avoid sharp bends or kinks in the cables. Inspect cables regularly for signs of wear or damage.
- Calibration: While the Quick Zero function provides on-demand calibration, periodic professional calibration may be required for applications demanding the highest accuracy. Refer to Micsig's official support for calibration services.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No signal on oscilloscope |
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| Noisy or unstable signal |
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| Probe power LED off |
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8. Specifications
The following table details the technical specifications for the Micsig DP/DP Series High Voltage Differential Probes.
Image 8.1: Detailed specifications table for various models within the Micsig DP/DP Series, including Bandwidth, Differential Voltage (DC+AC PK), CMRR, and Input Impedance.
Note: Specific models may have variations in performance. Refer to the table for details. When placing orders, please handle them according to the new model numbers.
- Manufacturer: Shenzhen Micsig Technology Co., Ltd.
- Model Number (DP703): SM-DP703
- Package Dimensions: Approximately 11.02 x 9.45 x 3.15 inches
- Weight: Approximately 2.2 Pounds
- Date First Available: September 13, 2024
9. Warranty and Support
Micsig products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the official Micsig website or contact your local distributor.
For the most up-to-date information and support resources, please visit the Micsig Official Store on Amazon or the manufacturer's website.
