ADCMT 7451A User Manual

7451A/7461A/7461P Digital Multimeter Operation Manual
7.1.2 AC Voltage Measurement (ACV, ACV(AC+DC))
7-6
ACV(AC+DC)
Additional error depending on the crest factor (For a non-sinusoidal input voltage)
Additional error depending on the AC filter Integration time: 10 PLC
Maximum allowable applied voltage
Additional error depending on the integration time AC filter: SLOW
Input
terminal
Range
Maximum
display
Resolution Input impedance
Measurement accuracy *1 ( of reading digits)
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 300 mV 319.99 10V1 M2%,
140 pF or less
0.28+12 0.1+12 0.06+12 0.2+15 0.6+24 4+150
3000 mV 3199.9 100 V1 M2%,
140 pF or less
0.28+12 0.1+12 0.06+12 0.2+15 0.6+24 4+150
30 V 31.999 1 mV 1 M2%,
140 pF or less
0.28+12 0.1+12 0.06+12 0.2+15 0.6+24 4+150
300 V 319.99 10 mV 1 M2%,
140 pF or less
0.28+12 0.1+12 0.06+12 0.2+15 0.6+24 4+150
700 V 749.9 100 mV 1 M2%,
140 pF or less
0.28+3 0.1+3 0.06+3 - - -
*1 AC filter: SLOW, Integration time: 10 PLC, Display digit: 4 1/2, Sinusoidal input voltage
The input voltage is restricted to 2.2  10
7
V•Hz in the 300 V and 700 V ranges.
*2 100 kHz-200 kHz in the 300 mV and 3000 mV ranges
1 - 2 0.05% of range
2 - 3 0.15% of range
Frequency bandwidth
Additional error (% of reading)
Response time *1
20 Hz - 45 Hz 45 Hz - 100Hz 100 Hz - 1 kHz More than 1 kHz
SLOW 20 Hz - 300 kHz 0 0 0 0 3 s
MED 20 Hz - 300 kHz 0.7 0.23 0.04 0 500 ms
FAST 300 Hz - 300 kHz - - 0.1 0 100 ms
*1 Time until the measurement value reaches within 0.1% of the final value in the same range
Between V and COM terminals
700 Vrms, 1000 Vpeak, 2.2  10
7
VHz
Between COM terminal and chassis 500 V
Integration time Additional error (digit)
100 s  IT < 200 s - In a 3 1/2-digit display 2
200 s  IT  2 ms Includes FAST1 and FAST2. In a 4 1/2-digit display 10
2.01 ms < IT < 9.99 ms - In a 5 1/2-digit display 20
10 ms < IT < 1 PLC - In a 5 1/2-digit display 12
1 PLC  IT < 10 PLC - In a 5 1/2-digit display 10
10 PLC < IT  10 s - In a 5 1/2-digit display 2

ADCMT 7451A Specifications

General

Brand	ADCMT
Model	7451A
Category	Multimeter
Language	English