Iso-Tech IDM 97 Manuel D'instructions page 11

A.C. voltage (Va.c.)
Range
3V
30V
300V
600V
* Frequency range for 3V range : 40 to 300Hz.
** Frequency response : 40Hz to 1kHz; for the 3V range: 40 to 300Hz.
Input impedance : 10M
IDM 97 a.c. voltage conversion : Mean measured - r.m.s. value displayed
IDM97RMS : A.c. voltage coupled measurement, true r.m.s. readings, calibration to the r.m.s. value of a sinusoidal
input voltage, basic accuracy is for full scale deflection for sinusoidal voltages and half scale deflection for non-
sinusoidal voltages (for sinusoidal voltages only in the case of the 3V range). In the case of non-sinusoidal voltages,
the following amounts should be added to the figures for accuracy:
Resolution Accuracy (97)
1mV ±(1.3% + 5D)*
10mV
100mV
1V
è
in parallel with 100pF.
±(1.3% + 5D)
40 to 500Hz
11
Accuracy(97RMS)
±(1.3% + 3D)**
Over voltage
600V a.c. or
600 V rms