Iso-Tech IIT 1500 Manuel D'utilisation page 9

IIT 1500 English
Voltage Measurement
Function
DCV
ACV
LPF ACV
Start measuring voltage: ≥ AC 0.6V.
Over voltage protection:
600V rms or dc.
Low pass filter cut-off frequency: 1 kHz.
Input Impedance:
3MΩ // < 100pF.
CMRR / NMRR:
(Common Mode Rejection Ratio)
(Normal Mode Rejection Ratio)
V :
AC
CMRR > 60dB at DC, 50Hz / 60Hz
V :
DC
CMRR > 100dB at DC, 50Hz / 60Hz
NMRR > 50dB at DC, 50Hz / 60Hz
AC Conversion Type:
AC conversions are ac-coupled, true rms responding, calibrated to the sine
wave input.
Non-sine wave Crest
Factor corrections:
For Crest Factor of 1.4 to 2.0, add 1.0% to accuracy.
For Crest Factor of 2.0 to 2.5, add 2.5% to accuracy.
For Crest Factor of 2.5 to 3.0, add 4.0% to accuracy.
Maximum permissible
Crest Factor:
3 @ 330V; 2 @ 500V
8
Range
600.0V
600.0V
600.0V
Accuracy
±(1%+5dgt)
±(1.5%+5dgt) (50~60Hz)
±(2%+5dgt) (61~500Hz)
±(1.5%+5dgt) (50~60Hz)
±(5%+5dgt) (61~400Hz)