UNI-T UT-P35 & UT-P36 High Voltage Isolating Probes
Instruction Manual
Preface
At first, thank you very much for using our product UT-P35&UT-P36 high voltage isolating probes. This instruction manual includes safety summary, brief introduction, main specifications and operating basics etc. Please read the manual carefully prior to use the product.
Warranty
UNI-T warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this warranty period, UNI-T, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product. Parts, modules, and replacement products used by UNI-T for warranty work may be new or reconditioned to like new performance. All replaced parts, modules and products become the property of UNI-T.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care.
THIS WARRANTY IS GIVEN BY INSTRANCE WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED. INSTRANCE AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. INSTRANCE AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER INSTRANCE OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
1. Safety Summary
Please Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it.
Use proper AC adapter
Use only the AC adapter specified for this product.
Connect and disconnect properly
Connect the probe output to the measurement instrument before connecting the probe to the circuit under test. Disconnect the probe input from the circuit under test before disconnecting the probe from the measurement instrument. Do not connect or disconnect probes while they are connected to a voltage source.
Ground the product
This product is indirectly grounded through the grounding conductor of the mainframe power cord. To avoid electric shock, the grounding conductor must be connected to earth ground. Before making connections to the input or output terminals of the product, ensure that the product is properly grounded.
Do not operate without covers
Do not operate this product with covers or panels removed.
Power disconnect
The power cord disconnects the product from the power source. Do not block the power cord; it must remain accessible to the user at all times.
Do not operate in an explosive atmosphere
Do not operate in an explosive atmosphere.
Do not operate in wet/damp conditions
Do not operate in wet/damp conditions.
2. Brief Introduction
UT-P35&UT-P36 high voltage isolating probe applies differential input mode. It is used at the location need to measure high voltage or isolate from ground usually.
UT-P35 high voltage isolating probe supplies two attenuation ranges 1/50 and 1/500 to be selected. The Maximum measurable differential voltage are 130V (DC + peak AC) and 1300V (DC + peak AC) accordingly. UT-P36 isolating probe supplies two attenuation ranges 1/200 and 1/2000 to be selected. The Maximum measurable differential voltage are 560V (DC + peak AC) and 5600V (DC + peak AC) accordingly.
UT-P35&UT-P36 high voltage isolating probe has over range alarm function. It indicates with a red LED.
UT-P35&UT-P36 high voltage isolating probe is small and robust. It has very high stability, reliability and accuracy.
Applications
- Measure without connect to ground
- Measure a high voltage or strong electricity
- Switch-mode power supplies design
- Power convert design
- AC inverter and UPS
- Transducer design
- Electronic ballast design
- Electromotor drive design
- CRT display design
- Electric and electronic experiment
3. Main Specifications
Electrical Specification
| Model | UT-P35 | UT-P36 |
|---|---|---|
| Bandwidth (-3dB) | 50MHz | 100MHz |
| Rise time | 7ns | 3.5ns |
| Accuracy | ± 2% | |
| Attenuation | 1/50, 1/500 | 1/200, 1/2000 |
| Input resistance | Between each input to ground: 4MΩ Between inputs: 8MΩ |
Between each input to ground: 16MΩ Between inputs: 32MΩ |
| Input capacitance | Between each input to ground: 7pF Between inputs: 3.5pF |
Between each input to ground: 4pF Between inputs: 2pF |
| Maximum measurable differential voltage | 1/50: 130V (DC + peak AC) 1/500: 1300V (DC + peak AC) |
1/200: 560V (DC + peak AC) 1/2000: 5600V (DC + peak AC) |
| Maximum input voltage-to-earth | 1000Vrms, CAT I 600Vrms, CAT II |
2800Vrms, CAT I 1400Vrms, CAT II |
| Noise | 1/50: ≤ 1.5mVrms 1/500: ≤ 1mVrms |
1/200: ≤ 1.5mVrms 1/2000: ≤ 1mVrms |
| Linearity | ±1% | |
| Delay time | 20ns±1ns | |
| CMRR | DC: ≥80dB | |
| Differential overvoltage detection level | 1/50: 140V ± 4V (DC + peak AC) 1/500: 1400V ± 40V (DC + peak AC) |
1/200: 580V ± 16V (DC + peak AC) 1/500: 5800V ± 160V (DC + peak AC) |
| AC adapter output | DC9V, 1000mA | |
| AC adapter input | AC100~240V, 50~60Hz | |
Typical mechanical specification
- Input cable length: UT-P35: 60cm; UT-P36: 30cm
- Output cable length: 90cm
- Alligator clips: 85×40×13 mm
- Pincer clips: 160×45×13 mm
- Probe body: 120×55×24 mm
- Weight (probe only): 160g
Environment Specification
- Operating temperature: 0~40°C
- Storing temperature: -10~45°C
- Operating humidity: 85%RH
- Storing humidity: 90%RH
- Operating altitude: 3000m
- Storing altitude: 12000m
4. Unpacking and Preparation for Use
4-1 Unpacking
This product has been checked and tested for the quality before it comes out of the factory. Please check if there is damage during the transportation when unpacking. If there is, please inform the transportation company and the local agent immediately.
Packing list:
- High voltage isolating probe: 1pcs
- Instruction manual: 1pcs
- AC adapter: 1pcs
- Red alligator clip: 1pcs
- Black alligator clip: 1pcs
- Red pincer clip: 1pcs
- Black pincer clip: 1pcs
4-2 Preparation for use
Please check the line voltage prior to connect the AC adapter to the electric outlet. The line voltage should be coincident the following list. If the incorrect line voltage is used, it will damage the product and the AC adapter.
| AC adapter input voltage | Frequency |
|---|---|
| AC100V~240V | 50~60Hz |
Warning: Use only the AC adapter specified for this product to avoid injury and prevent damage to this product.
5. General View of Product
The UNI-T UT-P35/UT-P36 high voltage isolating probe is shown. The probe body is a black rectangular unit with labels such as 'POWER', 'OVER RANGE', '1/500', '1/50', 'UNI-T', 'UT-P35 50MHz High Voltage Differential Probe', 'DC 9V', 'EXT POWER', 'INTO 1MΩ', 'OUTPUTS', and voltage ratings. It is connected to a black and red input cable with two probe tips (one red, one black) and a black output cable with a BNC connector. The input cable also features two alligator clips (one red, one black) and two pincer clips (one red, one black).
6. General View of Accessories
The UT-P35&UT-P36 high voltage isolating probe includes the following accessories: An AC adapter, a couple of alligator clips, and a couple of pincer clips.
1. AC adapter
Description of AC adapter image: A black power adapter with a cord and a connector.
2. Alligator clips
Description of alligator clips image: A pair of alligator clips, one red and one black.
3. Pincer clips
Description of pincer clips image: A pair of pincer clips, one red and one black, attached to cables.
7. Operating Basics
UT-P35&UT-P36 high voltage isolating probe is very convenient to operate. But we suggest every new user should read the manual perfectly prior to begin operating.
7-1 Operation steps
- Check and affirm the AC adapter input voltage is correct prior to use.
- Guesstimate the voltage to measure and set the correct attenuation switch. If the input voltage is over range, perhaps it will damage the probe.
- Connect the BNC output terminal to oscilloscope or other measuring instrument. Connect the input cables to the adapt clips well.
- Connect the AC adapter output to probe power input connector. The green POWER indicator lights.
- Select adapt attenuation range according to measured voltage. When the measured voltage is over range, the red OVER RANGE indicator lights, the attenuation should increase or disconnect the power and the input measured voltage.
- Set the measuring oscilloscope or other instrument sensitivity according to displayed altitude of signal.
- Connect the adapt clips to input cables.
- Connect the clips to measured targets to start measuring. The probe body should be far from high voltage pulse circuits to reduce the noise or errors.
- When the test is finished, disconnect the power at first, then disconnect input from measured target, disconnect the output BNC terminal from the oscilloscope or other measuring instrument at last.
7-2 Attention to use
- Twisting the input leads as following helps to cancel noise that is induced into the input leads and to improve the high frequency response of the inputs.
- Do not extend input cables if not necessary, this will lead to more noise. If it is necessary to extend input cables, the extend cables length should be same. And the measured signal frequency should be lower than 10MHz. Otherwise the errors will be larger.
- The probe and measuring instrument should warm up for 20 minutes if want to get high accuracy measuring result.
7-3 Troubleshooting
| Issue | Solution |
|---|---|
| The Power LED does not remain lit | Check that the AC adapter is plugged in and functional. |
| The measured waveform can't be displayed right and stability | Check that the probe accessories that you are using are fully mated. Check the probe connection on your circuit. Perform a functional check on the probe. Change a different channel on the oscilloscope or change a different oscilloscope. |
Company Information
UNI-TREND TECHNOLOGY (CHINA) CO., LTD.
No6, Gong Ye Bei 1st Road, Songshan Lake National High-Tech Industrial Development Zone, Dongguan City, Guangdong Province, China
Tel: (86-769) 8572 3888
Website: http://www.uni-trend.com
