DP-30HS and DP-40LV High‑Performance Differential Probes

High‑Performance Differential Voltage Probes DP‑30HS & DP‑40LV for accuracy and isolation when monitoring floating voltage signals

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DP-30HS and DP-40LV differential voltage probes, for isolation
DP-30HS and DP-40LV differential voltage probes

Highlights

DP30HS Low‑Voltage Precision Differential Probe:

  • 65Vp-p differential voltage range
  • Bandwidth: 30MHz
  • High Input Impedance: 1Mohm//3.5pF
  • Attenuation ranges: x1, x2, x10
  • Excellent common-mode Noise Rejection
  • Safe Floating Measurements
  • Universal BNC Output
  • Perfect for precision low‑voltage diagnostics

DP40LV Mid‑Voltage High‑Bandwidth Differential Probe:

  • 650Vp-p differential voltage range
  • Bandwidth: 40MHz
  • High Input Impedance: 1Mohm//3.5pF
  • Attenuation ranges: x10, x20, x100
  • Strong common-mode Noise Rejection
  • CATIII 230V Safty rating
  • Standard BNC Output
  • Ideal for mid‑range power electronic

About the DP-30HS Low‑Voltage Precision Differential Probe:

The DP‑30HS is a high‑sensitivity, low‑voltage differential voltage probe engineered for precision measurements in control electronics, instrumentation and small‑signal systems. With a 30 MHz bandwidth and 65Vp‑p differential voltage capability. It delivers clean, accurate waveform capture for applications where signal integrity is critical.

Its high input impedance (1MΩ // 3.5pF) ensures minimal loading on delicate circuits, while its excellent common‑mode noise rejection provides stable measurements even in electrically noisy environments. The DP‑30HS offers three selectable attenuation settings ×1/×2/×10, giving engineers the flexibility to analyze a wide range of low‑voltage signals without sacrificing accuracy.

Designed for universal compatibility, the probe features insulated differential inputs and a standard BNC output, making it easy to integrate with virtually any oscilloscope or DAQ system. Compact, reliable and optimized for precision. The DP‑30HS is the ideal tool for engineers working with sensors, control loops, analog front‑ends and other low‑voltage circuits where accuracy and safety matter.

About the DP-40LV Mid‑Voltage High‑Bandwidth Differential Probe

The DP‑40LV is a robust, mid‑voltage differential voltage probe designed for engineers working in power electronics, motor‑drive systems, inverter control, and industrial automation. With a 40MHz bandwidth and a generous 650Vp‑p differential voltage range. It provides the performance needed to analyze switching waveforms, PWM signals and mid‑voltage control circuitry with confidence.

Its high input impedance (1MΩ // 3.5pF) and strong common‑mode noise rejection ensure accurate, noise‑free measurements across a wide range of operating conditions. The DP‑40LV includes three attenuation options ×10/×20/×100, allowing safe scaling of higher‑voltage signals into the oscilloscope’s input range while maintaining excellent fidelity.

Built with safety in mind, the probe carries a CATIII 230V rms rating, making it suitable for mains‑related diagnostics and industrial environments. Dual insulated input connectors and a standard BNC output ensure compatibility with most oscilloscopes and data acquisition systems. Rugged, versatile, and engineered for demanding applications. The DP‑40LV is the go‑to solution for mid‑voltage differential measurements in modern power‑electronics systems.

Applications

DP-30HS Low‑Voltage Precision Differential probe:

  • Low‑Voltage Differential Measurements
  • Analog front‑end and small‑signal circuit development
  • Measurement of low‑voltage PWM and switching signals
  • Noise‑sensitive circuit diagnostics where high CMRR is essential
  • Floating measurements in low‑voltage isolated systems
  • Troubleshooting microcontroller‑based and embedded control circuits
  • Sensor signal and instrumentation testing
  • Control‑circuit and automation signal analysis

DP-40LV Mid-Voltage High Bandwidth Differential probe:

  • Mid‑voltage differential measurements in power‑electronics systems
  • Industrial control and automation diagnostics
  • Mid‑voltage current‑shunt and power‑stage measurements
  • Measurement across mid‑voltage switching devices like MOSFETs, IGBTs, etc
  • Motor‑drive and inverter PWM waveform analysis
  • Floating measurements in isolated mid‑voltage circuits
  • Mains‑related signal analysis in CATIII environments
  • Troubleshooting variable‑speed drives and industrial power modules

Specifications

DP-30HS and DP-40LV Differential Probe
Functions DP-30HS DP-40LV
Differential Voltage DC/AC pk 65V 650V
Bandwidth (50ohm load -3dB) 30MHz (x2, x10) 40MHz (x20, x200)
Common Mode Voltage DC/AC pk 65V 650V
Common Mode Voltage RMS CATII / CATIII 23Vrms 230Vrms
Attenuation x1, x2, x10 x10, x20, x100
Input R (Each Input) 1MΩ ±1% 1MΩ ±1%
Input C (Each Input) 3.4pF ±5% 3.4pF ±5%
Maximum Operation Voltage (DC + AC pk) ≤±6.5V at x1 ≤±65V at x10
≤±13V at x2 ≤±130V at x20
≤±65V at x10 ≤±650V at x100
Common Mode Rejection Ratio(CMRR) 60Hz > 10000:1 60Hz > 20000:1
100Hz > 1000:1 60Hz > 2000:1
1MHz > 300:1 1MHz > 600:1
Noise (Into 50Ω Load) ≤1mVrms ≤1mVrms
Input Impedance(Between Input) 2MΩ // 1.7pF 18MΩ // 1.7pF
Accuracy (at 20-30°C 70%RH after 20minutes) ≤ ±2% ≤ ±2%
Noise (Into 50ohm Load) ≤ ±7.0V ≤ ±7.0V
Power Source External 6V~9V DC External 6V~9V DC

Datasheets:

DP30HS and DP40LV Datasheet

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