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Measurement Characteristics
Accuracy is ± (% reading + number of digits) at 23°C ± 5°C, less than 80% R.H.
DC Volts
Range Resolution Accuracy
Over voltage
protection
600.0mV 100µV
6.000V 1mV
60.00V 10mV
600.0V 100mV
1000V 1V
±(0.5% + 2dgt) 1000V rms
AC Volts
Range Resolution Accuracy
Over voltage
protection
600.0mV 100µV Unspecified
6.000V 1mV
60.00V 10mV
600.0V 100mV
750V 1V
±(0.9% + 5dgt)
50Hz ~ 500Hz
*
1000V rms
Input Impedance: 10MΩ // less than 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: 61-320: Average sensing rms indication.
61-322 / 61-324: AC conversions are ac-coupled, true rms responding, calibrated to
the sine wave input.
* The basic accuracy is specified for sine wave below 4000 counts. Over 4000 counts, need to add 0.6% to the
accuracy for non-sine waves below 2000 counts, refer to the following for accuracy:
Crest Factor (C.F.):
+1.5% addition error for C.F. from 1.4 to 3
+3.0% addition error for C.F. from 3 to 4 where C.F.=Peak / RMS
Form number TM61320-2-4 Rev 2 September 2002