7451A/7461A/7461P Digital Multimeter Operation Manual
7. SPECIFICATIONS
7-1
7.
SPECIFICATIONS
7.1
Specifications
Unless otherwise specified, the measurement accuracy of this instrument is guaranteed for one year under
the following conditions: Temperature; 23
5
C, relative humidity; 85% or less (75% or less in a resistance
measurement of larger than 10 M
and low power resistance measurement of larger than 1 M
)
7.1.1
DC Voltage Measurement (DCV)
•
7461A/61P
Additional error depending on the integration time
Input
terminal
Range
Maximum
display
Resolution
Input impedance
*3
Measurement accuracy *1
(% of r digits)
Temperature coefficient
(ppm of r digits)/
C
24 hours
23
C
1
C *2
90 days
23
C
5
C
1 year
23
C
5
C
Auto-zero
ON
Auto-zero
OFF
V-COM
100 mV
119.9999
100 nV More than 1 G
/
10 M
1%
0.0030+30.0
0.0040+35.0 0.0040+35.0
5.0+5.0
5.0+7.0
1000 mV
1199.999
1
V More than 1 G
/
10 M
1%
0.0020+4.0
0.0030+5.0
0.0040+5.0
5.0+1.0
5.0+5.0
10 V
11.99999
10
V More than 1 G
/
10 M
1%
0.002+3.0
0.0030+3.0
0.0035+3.0
5.0+1.0
5.0+5.0
100 V
119.9999
100
V
10 M
1%
0.0020+5.0
0.0035+5.0
0.0045+5.0
5.0+1.0
5.0+5.0
1000 V
1099.999
1 mV
10 M
1%
0.0020+5.0
0.0035+5.0
0.0040+5.0
5.0+1.0
5.0+5.0
BchHi-
COM
10 V
11.99999
10
V
More than 1 G
0.002+3.0
0.0030+3.0
0.0035+3.0
5.0+1.0
5.0+5.0
*1
Integration time: 10 PLC, Display digit: 6 1/2, Auto-zero: ON
*2
Relative value with respect to the calibration standard
*3
In the 100 mV, 1000 mV, and 10 V ranges, the input impedance can be selected from either 10 M
or more than 1 G
.
Integration time
Additional error
(
V)
10
s
IT
200
s
-
In a 3 1/2-digit display
2+20
200
s < IT
2 ms
Includes FAST1 and FAST2. In a 4 1/2-digit display
2+20
2 ms <
IT < 1 PLC
-
In a 5 1/2-digit display
2+20
1 PLC
IT < 10 PLC
Integral multiple of 1 PLC
In a 6 1/2-digit display
1+0
10 PLC < IT
10 s
Integral multiple of 1 PLC
In a 6 1/2-digit display
2+0
