Micsig DP750 User manual

High Voltage Dierential Probe User Manual
DP750
1、Oveiew
Designed with unconventional appearance, the DP750 adopts the solution by building in the test
line and probe which with shielding function, integrated the interface end in a compact box, no
need to twist the cables, leads to a lower noise oor and has less inteerence.
Max 100MHz bandwidth, Max input voltage 750V, switchable 50X / 500X attenuation ratio, high
accuracy, the noise floor is low and is not affected when switching ratio, support one-press
Zero calibration, and overvoltage alarm. Support USB power supply, suitable for any brand of
oscilloscope. Support direct power supply with Micsig UPI multi-function interface oscilloscope.
Automatically matches the scope attenuation coecient without manual adjustment.
The DP750 can be widely used in the research and development, commissioning or maintenance
of switching power supplies, frequency conveers, electronic ballasts, frequency conversion home
appliances and other electrical power devices.
5、Precautions
1) Before staing the measurement, the zero point of the probe needs to be calibrated:
First sho-circuit the two input terminals, power on, press and hold the "Zero" button for 3s, the
two indicators will sta ashing at the same time, and the Zero point calibration is successful after
3s.
2) When the differential probe output is connected to the oscilloscope, the bandwidth of the
oscilloscope is required to be no less than 100MHz, and the input impedance of the channel is no
less than 1MΩ.
3) It is recommended to use it after warming up for 10 minutes to get more accurate data.
4) If there is a functional failure of the product, please contact local dealer or Micsig directly.
6、Warranty
1) The main body of this dierential probe is guaranteed for 1 year. During the product warranty
period, under normal use, the company will be responsible for free maintenance without dismantling
and repairing the fault caused by the quality of the product itself.
2) The warranty is invalid in the following cases, but maintenance seices are provided, labor costs
are waived, and only spare pas are charged:
a. Consumers damage any accessories due to improper use, maintenance and storage.
b. Damage caused by force majeure factors, such as natural disasters, etc.
3) In the following cases, the company will refuse to provide maintenance services or provide
maintenance seices for a fee:
a. Unable to provide product packaging or anti-counteeiting labels on product packaging.
b. The content of the anti-counteeiting label has been altered, or is blurred and unrecognizable.
c. It has been dismantled by any person not authorized by Micsig (eg: changing wires, dismantling
internal components, etc.).
d. No sales voucher or the content of the sales voucher does not match the product.
7、Safety
1) Non-professionals should not open the product shell
2) Do not use with the product shell open
3) When measuring, do not touch any bare metal
4) When overload occurs, please disconnect the power supply and input immediately
5) Do not use in ammable and explosive environments
Shenzhen Micsig Technology Co., Ltd.
Phone: [phone]
Email: [email protected] Web: www.micsig.com
Add: 1F, Huafeng International Robot Industrial Park, Hangcheng Rd, Bao'an District, Shenzhen,
Guangdong, China

4、Operation Steps
1) When the oscilloscope has a Micsig UPI (universal probe inteace), connect the dierential probe
output end to the oscilloscope input channel to power the probe.
2) When the oscilloscope does not have a Micsig UPI: Firstly, connect the dierential probe to the
power adapter PA05, then connect the two to the oscilloscope input channel; Secondly, connect the
Type-C cable to the 5V DC power supply to power the adapter.
3) Select the appropriate attenuation ratio on the power box of the dierential probe, according to
the voltage range of the signal under test.
4) Connect the signal input line on the signal box of the dierential probe to the signal under test to
sta the measurement. If the signal exceeds the voltage range of the current ratio, the indicator will
ash, please turn o the signal under test and disconnect the dierential probe power supply.
5) Set up the oscilloscope to obsee the signal tested by the dierential probe.
3、Panel Description
1) Dierential probe power supply box
2) Dierential probe signal box
3) Power Adapter
BNC po: Signal Output
Spring Pin:
Power Input Button: Ratio Switch Cable: to Signal Box
Button: Auto Zero
Indicator: Current Ratio
- Zero
- Overrange
Signal Input Cable: –
Signal Input Cable: +Cable: to Power Supply Box
Type-C po: Connect to 5V power supply
Contact: Connect to power box spring pinBNC po: To oscilloscope BNC po: To probe
power supply box
Model name DP750 -100 DP750 -50
Bandwidth 100MHz 50MHz
Rise Time ≤ 3.5ns ≤ 7ns
Attenuation Ratio 50X; 500X
Gain Accuracy ±2%
Max Dierential Test Voltage（DC+AC PK） 50X: 75V; 500X: 750V
Max Common Mode Input Voltage CAT II 600V
Input Referred Noise ≤ 12mVrms(50X); ≤ 120mVrms(500X)
Common Mode Rejection Ratio (CMRR) ＞ 80dB(DC); ＞ 80dB(100KHz); ＞ 60dB(1MHz)
Input Resistance Dierential input impedance: 8MΩ||1.25pF;
Each input ground: 4 MΩ||2.5pF
Output Voltage ≤ 1.5V
Power Rate 1W
Power Supply Micsig UPI Inteace; USB (Adaptor)
Overrange Alarm Indicator ashes
Dimensions Power Supply Box: 80*37*22 mm
Signal In/Output Box: 49*25*12.5 mm
Input Cable Length 33mm
Output Cable Length 100mm
Working Temperature 0℃ -40℃
Working Humidity 10%-85%
2、Specications