An FET input probe (manufactured by PMK) that can measure high-frequency signals in high quality with a low input capacitance C (0.6pF) of the probe

FET Probe Sonic 4000


FET Probe Sonic 4000RF
* AC adapter included

FET probe Sonic 4000 specification

Model / Product Sonic 4000 / Active Single End Probe
Frequency bandwidth (-3dB) DC ~ 4GHz
Attenuation 10:1
Accuracy ±2% (single probe)
Input range ±8V
Maximum input voltage (CAT I) 20V
Input RC 1MΩ // 0.6pF
Measurement equipment side input coupling 50Ω
Cable length Approx. 1.3m

FET probe Sonic 4000RF specification

Model/Product Sonic 4000RF / Active Single End Probe
Frequency bandwidth (-3dB) 350Hz ~ 4GHz
Attenuation 10:1
Accuracy ±2% (single probe)
Input range ±8V
Maximum input voltage (CAT I) ±60V(ESD protected)
IEC 61000-4-2 Contact Discharge Lecel 2, IEC 61000-4-2 Air Discharge Lecel 3
Input RC 1MΩ // 0.6pF
Measurement equipment side input coupling 50Ω
Cable length Approx. 1.3m

Utilization scenes

  • Crystal oscillator
  • PLL synthesizer, High speed digital circuit
  • Serial communication
  • ECU circuit signal observation
  • Common mode noise measurement of differential interfaces, etc.
  • High-frequency small signal amplifier
  • Signal purity and distortion analysis in combination with a spectrum analyzer
  • Input/output impedance characteristics such as amplifiers using a network analyzer
  • Frequency characteristics analysis

Optional accessories