GW Instek

GW Instek GAD-201G: Automatic Distortion Meter

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Description

The GAD-201G distortion meter is aimed at total harmonic distortion (THD) and AC voltage measurement at audio frequency range, from 20 ~ 20kHz. Frequency and voltage are displayed simultaneously on dual meters, with measurement range automatically switching over full scale.
The frequency keys cover 400Hz, 1kHz, and 10kHz for commonly used measurement frequencies.
The output terminals can feed basic waveforms (X) and harmonic distortion (Y) to an external
monitoring device. Residual distortion, including hum and noise, is kept to a minimum level of
0.03%, making the GAD-201G ideal for high-end audio applications.

Features:

    •  Automatic level & distortion measurements
    •  Auto or Hold function selectable
    •  0.1% ~ 100% in 7 distortion measuring ranges
    •  20Hz ~ 20kHz in 3 continuous ranges
    •  400Hz, 1kHz, 10kHz 3 frequency spots
    •  1mVrms ~ 300Vrms in 12 ACV measuring ranges
SPECIFICATIONS
DISTORTION MEASUREMENT
Range

Fundamental Frequency Range

Input Level

Automatic Level Control Range

Fundamental Rejection

Second Harmonic Accuracy

Residual Distortion

0.1% ~ 100% full scale in 7 ranges by auto ranging 20Hz ~ 20kHz in 3 continuous ranges with fine adjustment tuning and 3 spots for 400Hz, 1kHz and 10kHz only 100mVrms ~ 300Vrms

±10dB

80dB or above Within ±1dB at a basic frequency of 20Hz ~ 20kHz (Including hum and noise) Less than 0.03%

AC VOLTAGE MEASUREMENT
Range

Frequency Response

Input Impedance

Accuracy

Residual Noise

Output Leve

Output Impedance

1mVrms to 300Vrms full scale in 12 ranges by auto ranging 20Hz ~ 200kHz 1dB

100k 10%, 70pF or less(Unbalanced) Within 3% of full scale (at 1kHz) Less than 10 V (input short circuited) X : 1Vrms, Y : 500mVrms at meter full scale Approx. 600

POWER SOURCE
AC 100V/120V/220V/240V 10%, 50/60Hz
DIMENSIONS & WEIGHT
310(W) x 165(H) x 300(D)mm, Approx. 4.6 kg

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