ZQ4127 Distortion Measurement InstrumentDetailed product description：

ZQ4127 is a wideband distortion measurement instrument that can measure the nonlinear distortion of sinusoidal signals ranging from 5Hz to 200kHz, with a minimum measured distortion of 0.03%. This instrument is also a wideband effective value voltmeter, with a frequency response of 2Hz to 1MHz. This instrument uses fast tuning methods to achieve frequency tuning, with LED numbers indicating the tuning frequency, making reading extremely convenient. Adopting a piano key switch, the operation is simple, convenient, and reliable. And it is equipped with auxiliary output, which can be connected to an external oscilloscope to monitor frequency tuning and phase adjustment.

This instrument is a new generation distortion measurement device with a digital interface. It has stable performance, high reliability, and is easy to use. It is widely used in scientific research, teaching, postal and telecommunications, electronic audio manufacturing, and other fields.

Main technical performance of ZQ4127 distortion measurement instrument

Distortion measurement

Frequency range: unbalanced 5Hz~200kHz; Balance 20Hz~20kHz
Distortion measurement range: 0.03% to 100%
Input voltage range: unbalanced: 300mV~300Vrms balanced: 300mV~30Vrms
Distortion measurement error:
20Hz~20kHz: ± 10% (full scale) ± 0.01%
5Hz~20Hz, 20kHz~200kHz: ± 20% (full scale)
Noise floor: not greater than 0.25mV during input short circuit (not greater than 0.3mV from 50Hz to 100Hz)
Fundamental filtering characteristic: not less than 80dB
Second harmonic loss: 20Hz~20kHz: ≤± 5% 5Hz~200kHz: £ ± 15%

voltage measurement

Frequency range: unbalanced 2Hz~1MHz balanced 20Hz~40kHz
Voltage measurement range: unbalanced 0.3mV~300Vrms balanced 0.3mV~30Vrms
Frequency characteristics (based on 1kHz): unbalanced 20Hz-100kHz: not greater than ± 1dB 2Hz-1MHz: not greater than 1.5dB (+40dB;+50dB range for reference)
Balance between 5Hz and 300kHz: not exceeding 1.5dB
Input impedance: unbalanced ³ 500 kW balanced 600W ± 3%, 10kW ± 10%
Accuracy (1kHz): £ ± 5%
Inherent noise: not exceeding 50mV when the input terminal is short circuited

Other

Power supply voltage: 198-242Vrms
Power consumption: approximately 25VA