Electrical Characteristics - Iso-Tech IDM 203 RMS Instruction Manual

3.2 Electrical characteristics

Accuracy is given as ± (measurement error + display error) and applies at 23°C ±5°C and less than 70% RH.
Measurement error (%) is given as a percentage of the current measurement.
Display error (D) is given in units equal to the smallest increment able to be shown on the display.
Voltage
d.c. voltage
400mV
4V,40V,400V,600V
a.c. voltage
4V,40V,400V,600V
50 to 60Hz
40Hz to 1KHz
Resolution : 0.1mV on 400mV range
Input impedance : 10M Ω, <100pF
Overload protection : 1100V or V (peak)
Conversion of a.c. voltages : 203 :
205 :
The accuracy specified is for full-scale deflection for sinusoidal voltages and half-scale deflection for non-sinusoidal voltages,
of frequencies less than 500Hz and crest factors of up to 2.
203
± (0.75% + 2D)
± (0.5% + 2D)
203
± (1% + 5D)
± (1.5% + 5D)
Mean measured - R.m.s. value displayed
Measurements are a.c. voltage coupled and represent a true r.m.s. value. Calibration
is to the r.m.s. value of a sinusoidal a.c. voltage.
7
205
± (0.3% + 2D)
± (0.1% + 2D)
205
± (0.5% + 5D)
± (1% + 5D)