100MHz/7000V High Voltage Differential Probe_Differential probes_Measuring Instrument_Products

Product Details

High performance differential probe

50mVrms ultra-low noise and 2% accuracy allow BNC differential probes to accurately analyze uA sensor signals. Hall effect technology combined with differential amplification can directly measure the micro voltage difference of strain gauge, which is suitable for low power verification of medical ECG equipment and industrial automation control system.

Measuring advantages

The differential probe realizes high impedance isolation between the signal end and the oscilloscope ≥ 1MΩ, directly measures the 4000V floating system in the development of cardiac defibrillator, and accurately captures the defibrillation pulse waveform with 80dB common mode rejection ratio, thus completely isolating the risk of electric shock to medical staff. The probe has passed IEC 61010 medical safety certification, meeting the insulation requirements of BF type equipment, ensuring zero missed diagnosis of defibrillation energy analysis.

CMRR Common Mode Rejection Capability

When measuring GaN/SiC half-bridge circuit with sub-probe, 80dB ultra-high common mode rejection ratio can compress 500V common mode voltage to mV level interference, and accurately capture Vgs drive details with 5ns dead time. The probe supports 100V/ns ultra-fast dV/dt change, and the aluminum nitride ceramic isolation medium withstands the double pulse test of 1700V silicon carbide devices, ensuring zero distortion in the loss analysis of the third generation semiconductor switch.

low voltage power supply

Through the oscilloscope built-in USB interface or external 5V power adapter power supply, using Type-C interface to achieve positive and negative blind plug, support plug and play function. Can provide up to 2A stable current, built-in overvoltage/overcurrent protection circuit. The Type-C cable is widely compatible with existing digital equipment, and the mobile phone charging cable can be directly borrowed to achieve rapid deployment in the laboratory environment.

pulse signal measurement

When comparing the rising edge responses of different probes, it is found that the waveform of the contrast probe has obvious ringing phenomenon. This phenomenon is mainly caused by insufficient probe bandwidth or transmission line impedance mismatch, and high-speed signals produce reflection superposition in the probe-oscilloscope path. It is recommended to use an active differential probe with a bandwidth ≥ 3 times the signal frequency to ensure that the input impedance is ≥ 1MΩ, which can effectively suppress ringing. With the oscilloscope 20MHz bandwidth limit function, can further optimize the signal integrity, so that the rise time measurement error ＜5%, in line with the IEEE1155 standard requirements.