PINTECH N1140Apro High Voltage Differential Probe

Introduction

Thank you for purchasing the PINTECH High Voltage Differential Probe. We are dedicated to serving you!

Please read this user manual carefully before use and pay attention to safety measures.

Meaning of Symbols

A Warning! Please refer to the user manual before using the instrument. Failure to comply with the instructions or operating before reading this user manual may result in personal injury or damage to equipment and devices.

A Caution! Be careful of electric shock hazards and note the maximum input voltage.

• Do not use in humid environments or under risk of explosion.
• Ensure the circuit under test is off before connecting the probe.
• After measurement, turn off the circuit under test first, then turn off the probe switch.
• Before use, check if the differential probe is damaged. If so, stop using it.
• Please select the standard adapter for this product.

1. Overview

The N1140Apro differential probe provides a safe instrument for all oscilloscopes. It can convert high input differential voltage (≤ 14 kVp-p) into low voltage (≤ 7 V) and display the waveform on the oscilloscope. It operates at frequencies up to 50 MHz, making it ideal for high-power testing, R&D, and maintenance.

The differential probe's output is designed for the oscilloscope's 1 MΩ input impedance with a relative attenuation. When using a 50 Ω impedance matcher, the attenuation is exactly doubled.

It is also recommended to purchase the PL-10 impedance converter produced by PINTECH to extend the application range of the differential probe. This allows for more accurate actual measured voltage values to be observed on the multimeter (oscilloscope accuracy is 3%, digital multimeter is about 3 times more accurate).

It can be widely used in the R&D, debugging, or maintenance of switching power supplies, inverters, electronic ballasts, variable frequency home appliances, and other electrical power devices.

2. Specifications

Mechanical Specifications

3. Operating Environment and Conditions

Double insulation. Installation Category III. Pollution Degree 2. Related voltage or max grounding: 5000 V RMS. Can be powered by battery or 6 V adapter. Standard adapter included.

4. Operating Procedure

1. Connect the BP-250 to the output of the N1140Apro and then to the oscilloscope.
2. Adjust the vertical switch on the oscilloscope if necessary.
3. Adjust the attenuation ratio and vertical switch on the oscilloscope to the same position.
4. Estimate the voltage value to be measured before testing. Exceeding the voltage range may damage the probe.
5. Before turning on the probe, it is best to set the probe gear to maximum. Connect the power adapter to the probe, toggle the power switch, the green light will turn on. When the test voltage exceeds the range, the light will turn red.
6. Set the oscilloscope's attenuation ratio according to the probe's selected ratio.
7. Connect the probe hook to the object under test to start measurement.
8. After the test is completed, turn off the circuit under test first, then turn off the probe switch, disconnect the probe hook from the object under test, and unplug the BNC connector from the oscilloscope.

(Note)

• The power must be turned on.
• The actual vertical deflection is equal to the attenuation multiplied by the vertical deflection selected on the oscilloscope. It is twice that of a 50 Ω load.
• When connecting the differential probe's BNC output cable to an oscilloscope or other equipment, ensure the BNC terminal is reliably grounded.

5. Precautions for Use

When measuring, try to wind the input lead. This can better eliminate lead inductance and external noise, improving high-frequency response and anti-interference capabilities. The winding method is shown in the figure below:

[Image: Diagram showing the input leads of the differential probe wound together in a twisted pair configuration.]

Try not to extend the input lead, as this will introduce more noise.

6. Accessories

• 6V Adapter (W&T-AD1806A060030K) (6 V / 0.3 A)
• Probe Hook BP-368N (1000 V / 3 A)

7. Maintenance

Servicing

When servicing this product, please use tools specified by the original manufacturer. The original manufacturer will not be responsible for repairs made by unauthorized personnel.

Cleaning

This product does not require any specific cleaning. If necessary, use a soft, clean cloth dampened with a small amount of cleaning solution to gently wipe the exterior of the product.

Warranty

Except for intentional human damage, this product is warranted and repairable, but does not include responsibility for safety regulations. The warranty is limited to the replacement of parts and shipping costs, not exceeding the invoice amount. The warranty is only for damage caused by normal operation and does not include any intentional damage, operational errors, mechanical misuse, improper maintenance, overload, or overvoltage. The original manufacturer's warranty is valid for 36 months after sale. If any unauthorized repairs or replacement parts are made, the original manufacturer's warranty will be automatically voided.

Repair

For any repairs, maintenance, or replacement of parts outside of the warranty period, please return the product to the original manufacturer for repair.

8. Packing List

Note: The product accessories are the probe hooks by default. If you need to replace them with other accessories such as alligator clips or IC clips, please contact our sales staff!