放大图片自动失真计 E-2001A
AUTOMATIC DISTORTION METER
厂家：日本NF
尺寸：212×126×248mm
重量：3.6Kg
Fundamental frequency range:20Hz to 20KHz in three continuous ranges with fine adjustment mechani***.
measuring range:0.1% to 100% fullscale,7 ranges
input level range:100mVr.m.s. to 100Vr.m.s.(at 100% CAL)
30mVr.m.s finely adjustable automatically
Fundamental harmonic rejection ratio:80dB and above
Higher harmonic characteristic:
secondary to quintic harmonic characteristics:
within &plu***n;1dB at a basic frequency of 20Hz to 10KHz
within &plu***n;2dB at a basic frequency of 10KHz to 20KHz
Provided,however,that the higher harmonic frequency
shall be 60KHz and below and the distortion factor 30% and below.
residual distortion factor:As shown in figure below,including hum and noise.
AC voltage measurement
Measuring range:100μVr.m.s. to 10Vr.m.s. full scale but when an input attenuator(ATT)is combinedly used.
100μVr.m.s. to 100Vr.m.s. full scale at 0dB in the input attenuator.
3mVr.m.s. to 3Vr.m.s. full scale at 30dB in the input attenuator.
100mVr.m.s. to 100Vr.m.s. full scale at 60dB in the input attenuator.
7 ranges with push-butt*** used in every case mentioned above.
accuracy:within&plu***n;3%(at 400Hz)
Frequency characteristics:
within &plu***n;0.5dB at 20Hz to 20KHz
within &plu***n;1dB at 10Hz to 200KHz
400Hz basic
Residual noise:10μVr.m.s and below(4μVr.m.s typically)in terms of input,with input short-circuited for 100μV range.
Ratings commonly applicable
input impedance:Approx.100 kilo-ohms at 70pF and below parallel capacitance
Type of input:Unbalanced binding post
output:Unbalanced binding post
"X" output:Approx.1Vr.m.s(fundamental harmonic components of input signal) in deteriming a distortion factor(at 100% calibration)
"Y" output:Approx.0.5Vr.m.s(with meter at full scale) in determining a voltage(input signal output) and a distortion factor(higher harmonic signal output)
output impedance:Aprox.2.2 kilo-ohms
meter
type of indication:mean value detected with RMS value indicated(calibrated in terms of sine-w***e signal)
classification:1.5 class with mirror
scale:0 to 3 and 0 to 10(voltage in percentage scale)
-16 to +2dB (dB scale:0dB=0.775Vr.m.s)