ADCMT 7451A User Manual

7451A/7461A/7461P Digital Multimeter Operation Manual
7.1.2 AC Voltage Measurement (ACV, ACV(AC+DC))
7-3
Maximum allowable applied voltage
Noise rejection ratio
7.1.2 AC Voltage Measurement (ACV, ACV(AC+DC))
• 7461A/61P
Measurement method True RMS measurement, RMS display
Input range 5% or more of a full scale
Crest factor 5:1 at a full scale
Temperature coefficient (1/10 of measurement accuracy that includes the additional error)/
C i
n each
range and frequency range
ACV
Between V and COM 1000 Vpeak
Between BchHi and BchLo 200 Vpeak
Between BchHi, BchLo and COM 200 Vpeak
Between COM and the chassis 500 V
Integration time
Effective CMRR *4 NMRR
DC 50/60 Hz 0.08% 50/60 Hz 0.08%
Integral multiple of 1 PLC 130 dB 120 dB 60 dB
Others 130 dB 60 dB 0 dB
*4 Unbalanced impedance of 1 k
Input
terminal
Range
Maximum
display
Resolution
Input
impedance
Measurement accuracy *1 (% of reading + digits) 23C5C
20 Hz -
45 Hz
45 Hz -
100 Hz
100 Hz -
20 kHz
20 kHz -
50 kHz
50 kHz -
100 kHz
100 kHz -
300 kHz *2
V-COM 100 mV 119.9999 100 nV 1 M2%,
140 pF or less
0.28+600 0.1+600 0.06+600 0.12+1800 0.6+2100 5+6000
1000 mV 1199.999 1V1 M2%,
140 pF or less
0.28+500 0.1+500 0.06+500 0.12+500 0.6+800 4+5000
10 V 11.99999 10 V1 M2%,
140 pF or less
0.28+400 0.1+400 0.06+400 0.12+500 0.6+800 4+5000
100 V 119.9999 100 V1 M2%,
140 pF or less
0.28+400 0.1+400 0.06+400 0.12+500 0.6+800 4+5000
700 V 749.999 1 mV 1 M2%,
140 pF or less
0.28+280 0.1+280 0.06+280 0.12+350 0.6+580 4+3500
*1 AC filter: SLOW, Integration time: 10 PLC, Display digit: 6 1/2, Sinusoidal input voltage
The input voltage is restricted to 2.2  10
7
V•Hz in the 100 V and 700 V ranges.
If the input voltage is 10% or less of the full scale, 30 V is added to the measurement accuracy as the additional error.
*2 100 kHz-200 kHz in the 100 mV and 1000 mV ranges

ADCMT 7451A Specifications

General

Brand	ADCMT
Model	7451A
Category	Multimeter
Language	English