* A.c. current conversion:
IDM97: 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, basis accuracy is for full scale deflection for sinusoidal voltages and half scale deflection for non-
sinusoidal voltages. In the case of non-sinusoidal voltages, the following amounts should be added to the figures for
accuracy:
C
r
e
s
t
2
2.5 to 3: +4%
f
a
c
t
o
r
t
o
:
1 . 4
2
.
14
t o
2 :
5
:
+ 0 . 5 %
+
2
%