Fiber Optic Isolated Voltage Probe. ISOVP


ISOVP probe with MASTERGAN1 board


The ISOVP isolated voltage probe allows the safe and accurate measurement of floating voltages in power electronic modules or electronics. Although it is best suited for medium voltage equipment due to the isolation provided, the high common mode and EMI rejection make it a perfect choice for general low voltage measurements. The 25V input voltage range with the supplied x10 attenuator is ideal to measure gate voltage in various semiconductor switching devices and study potential problems and improvements. Also input capacitance has been kept to a minimum as this is what really hurts most high-frequency measurements, causing loading of high and medium impedance signal sources and signal degradation.

A calibrate function brings the zero automatically to its position and calibrates the gain of the probe, all this without the need to disconnect the input signal as compared to other probes. A remote standby function allows to safely reduce the power consumption and extend battery life of both probe head and receiver without accessing potentially hazardous areas. The output signal is provided via a BNC connector which allows the use of any 50Ohm input terminated scope. 

The probe head is small enough to be used inside cabinets and small modules. It also features a camera mount type tripod thread that allows easy placement and clearances from the probe to ground to be maintained. 



ISOVP Isolated Probe Brochure
Measurements with the ISOVP Probe Guide
High Voltage Isolated Probe ISOVP User Manual
Probe Accessories
ISOVP Quick Reference Guide


Models Compared

(Coming soon)
Type of probeSplit ProbeSplit ProbeModular Probe
Bandwidth175MHz, 75MHz models175MHz, 75MHz models200MHz
Input range2.5V , external attenuators2.5V , external attenuators20V, 2V (optional), external attenuators
Max. common mode50kV50kV1500V
Remote power-off of probe headYesNoN/A
Fiber cable length2m..12m2..25mN/A
Offset adjustmentFine auto adjustmentFine auto adjustment (with no signal at input)Manual adjustment
Gain adjustmentAuto adjustmentManual adjustmentManual adjustment
Input connectorTouch protected SMBTouch protected SMBTouch protected SMB
OutputCoaxial cable, BNC 50OhmCoaxial cable, BNC 50OhmCoaxial cable, BNC 50Ohm
Tripod mountYesYesYes
PowerReceiver USB powered, Transmitter uses AA batteriesReceiver USB powered, Transmitter uses AA batteriesUSB
Tripod includedYesYesYes
External attenuator includedx10NoNo


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