Differential voltage probes allowing safe isolation with high  voltages - Safe measurement with any oscilloscope or logger

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The DP differential isolation probes are an important accessory for any laboratory involved in power electronics and high voltage systems.  These probes allow isolated and floating measurements with any oscilloscope or data recorder, whilst the oscilloscope can remain grounded. Using a DP150 or DP200pro probe, differential and floating measurements can be made on a variety of ac power systems like 230V/110V ac input power supplies, chopped and switching power supplies, thyristor controllers, variable speed motor drives (PWM signals), motor inrush current and measurement across current shunts. The isolated input is made via two 4mm/banana safety sockets.  The BNC output allows easy connection to an oscilloscope. The DP probes can be powered from a 9V battery or external power supply.


Get DP150/DP200pro datasheet pdf  |  Get DP150/DP200pro User Manual



High Range Performance Model

Measuring Range: 10mV-4kVpeak

Bandwidth: DC~150MHz (-3dB)

5 Range: x10, x30, x100, x300, x1000

Input Impedance: 100MΩ//1PF

Over Range Indicate LED

External Adapter Power Input


High Frequency Performance
Measuring Range: 20mV-800Vpeak
Bandwidth: DC~200MHz(-3dB)
4 Range: x20, x50, x100, x200
Input Impedance: 18MΩ//1.7PF
Over Range Indicate LED
External Adapter Power Input



DP150pro and DP200pro Differential Probes

Function / Model DP-200pro DP150pro
Differential Voltage DC + AC (peak) 800V 4kV
Bandwidth (50Ω load -3dB) 200MHz 150MHz
Common Mode Voltage DC + AC peak 800V 4kV
Common Mode Voltage AC RMS 560V 2.8KV
Range (Switchable) 4(X20, X50, X100, X200) 5(X10, X30, X100, X300, X1000)
Input Impedance 18MΩ // 1.7 PF 100MΩ // 1 PF
Input R // C 9MΩ // 3.4 PF 50MΩ // 2 PF
Common Mode Rejection Ration (CMRR) 60Hz: >10000:1
100Hz: >1000:1
1MHz: >300:1
60Hz: >10000:1
100Hz: >1000:1
1MHz: >300:1
Noise (Into 50Ω load) <1mV <1mV
Accuracy 2% 2%
Output Voltage 0-5V 0-5V
Output Impedance 50Ω 50Ω
Input Over range Indication Any Range Any Range
Power Auto Regulation System 5V-12V 5V-12V
Power Source External DC 9V/300mA External DC 9V/300mA
Accessories BP-250, BP-265N, BP276N, BP-286, BP-356N, PX-501, ADP-110(or ADP-220) BP-250, BP-266, BP276N, BP-286, BP-366, PX-502, ADP-110(or ADP-220)

Get DP150/DP200pro datasheet pdf  |  Get DP150/DP200pro User Manual

Other Differential Probe Models Available:
Model/Datasheet Current Range Bandwidth(50Ω load -3dB)
DP14k and DP20k datasheet DP-14K: 14kV
DP-20K: 20kV
DP-14K: 75MHz(x400,x1000, x2000)
DP-20K: 20MHz
(x600, x1500, x3000)
DP22kpro datasheet 22KV 120MHz
(x100, x300, x1000, x3000)
DP30HS and DP40LV datasheet DP-30HS: 65V
DP-40LV: 650V
DP-30HS: 30MHz
(x2, x10)
DP-40LV: 40MHz
(x20, x100)
DP35 datasheet 1600V 35MHz(20MHz at x10)
DP65pro and DP25 datasheet DP-65pro:1000V
DP-25: 1300V
DP-65pro: 25MHz
(x50, x200)
DP-25: 65MHz
(x50, x200)

All products are CE marked and have IEC, EN or UL approvals.

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