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Range, Resolution and Integration Time (shown in Aperture and NPLCs)
The following three tables show the integration time (in PLC and seconds) for each range and resolution.
To determine the PLC for a specified range and resolution:
1. Locate the range in the left column. Measurement units do not apply (i.e. for 1 V or 1 A, use the 1
range; for 100 V or 100 Ω, use the 100 range).
2. From the range value, follow the corresponding row of resolutions to the right until the specified res-
olution lies within two adjacent columns for your DMM model.
3. The NPLC value at the top of the left-adjacent column is the NPLC "setting" for the given range and
resolution.
For example: for the 34461A, a specified 10 VDC range and 10 µV resolution, locate range 10 in the table.
Moving to the right, the 10 µV resolution (1E-5) is found in the column under 10 NPLC.
Model
PLC
100
Aperture (60 Hz Power) 1.67s
Aperture (50 Hz Power)
2s
1
ResFactor
3ppm
Range
1 m
3E-9
10 m
3E-8
100 m
3E-7
1
3E-6
10
3E-5
100
3E-4
1 k
3E-3
10 k
3E-2
100 k
3E-1
1 M
3
10 M
30
100 M
300
1
ResFactor x Range = Resolution.
Keysight Truevolt Series Operating and Service Guide
34460A
10
1
0.2
0.167s
16.7ms
3ms
0.2s
20ms
10ppm
30ppm
100ppm
300ppm
1E-8
3E-8
1E-7
1E-7
3E-7
1E-6
1E-6
3E-6
1E-5
1E-5
3E-5
1E-4
1E-4
3E-4
1E-3
1E-3
3E-3
1E-2
1E-2
3E-2
1E-1
1E-1
3E-1
1
1
3
10
10
30
100
100
300
1 k
1 k
3 k
10 k
34461A
0.02
100
10
1.67s
0.167s
16.7ms
0.3ms
2s
0.2s
20ms
0.3ppm
1ppm
3ppm
Resolution
3E-7
3E-10
1E-9
3E-9
3E-6
3E-9
1E-8
3E-8
3E-5
3E-8
1E-7
3E-7
3E-4
3E-7
1E-6
3E-6
3E-3
3E-6
1E-5
3E-5
3E-2
3E-5
1E-4
3E-4
3E-1
3E-4
1E-3
3E-3
3
3E-3
1E-2
3E-2
30
3E-2
1E-1
3E-1
300
3E-1
1
3 k
3
10
30 k
30
100
SCPI Programming Reference
1
0.2
0.02
3ms
0.3ms
10ppm
100ppm
1E-8
1E-7
1E-7
1E-6
1E-6
1E-5
1E-5
1E-4
1E-4
1E-3
1E-3
1E-2
1E-2
1E-1
1E-1
1
1
10
3
10
100
30
100
1 k
300
1 k
10 k
453
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