Calibrator-meter of THD value SK6-20

ZET LLC

Production and calibration of measurement equipment of magnetic field and radio engineering parameters
phone +7-499-9950854, +7-495-9825912, e-mail info@zel-zet.ru


Calibrator-meter of harmonic distortions SK6-20.

Calibrator-meter of harmonic distortions SK6-20

Purpose:

  • Calibrator-meter of harmonic distortions is designed for
    • THD measurement;
    • measurements of first harmonic frequency and amplitude;
    • generation of sinusoidal signal with given standardized THD value with external generator-calibrator of harmonic signals SK6-122-01 attached (or Agilent Technologies arbitrary waveform generator 33220A), which is controlled through USB;
    • amplitude-frequency response and phase-frequency response calibration of quadripoles.
  • SK6-20 can be used as second grade working standard of THD value.

Technical specifications:

  • Basic specifications in THD measurement mode.
    • First harmonic frequency range in THD measurement mode 0,01 ... 200 kHz
    • THD values measurement range 0,001 100 %
    • First harmonic amplitude measurement range (under condition that RMS value of input signal is less than 1.27V) in THD measurement mode 1 ... 1,8 V
    • Maximum absolute error of THD value measurement depending on first harmonic frequency is given in following table:
    First harmonic
    frequency range
    Limits of THD measurement absolute error, %
    (10,0 199,9) Hz (0,03 × THD + 0,006 %)
    (0,2 20,0) kHz (0,02 × THD + 0,005 %)
    (20,001 200) kHz (0,04 × THD + 0,006 %)

  • Basic specifications in amplitude and frequency of first harmonic measurement mode.
    • First harmonic frequency range 0,01 200 kHz
    • First harmonic amplitude range (under condition that RMS value of input signal is less than 1.27V) 0,01 ... 2,00 V
    • Limits of first harmonic frequence measurement relative error 0,006 %
    • Limits of first harmonic amplitude measurement relative error:
           -in range form 10 mV to 1 V: 1,8 %
           -in range from 1 V to 2 V: 0,6 %
  • Basic characteristics in generating signal with given THD value mode (with external generator-calibrator of harmonic signals SK6-122-01 attached)
    • First harmonic frequency range in generation mode 0,01 200 kHz
    • THD value generation range 0,001 100 % with minimum step of 0,001 %
    • Limits of THD value generation absolute error depending on first harmonic frequency are given in following table:
    First harmonic
    frequency range
    Limits of absolute THD value generation error, %
    (10,0 199,9) Hz (0,03 × THD + 0,006 %)
    (0,2 20,0) kHz (0,02 × THD + 0,005 %)
    (20,001 200) kHz (0,04 × THD + 0,006 %)

    Documentation (in russian):