Fluke 8845A FE 8845A & 8846A Users Manual - Page 21

A Accuracy, Additional Errors, AC Voltage Specifications

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1 Introduction and Specifications Electrical Specifications 8846A Accuracy Accuracy is given as ± (% measurement + % of range) Range 100 mV 1 V 10 V 100 V 1000 V 24 Hour (23 ± 1 °C) 0.0025 + 0.003 0.0018 + 0.0006 0.0013 + 0.0004 0.0018 + 0.0006 0.0018 + 0.0006 90 Days (23 ± 5 °C) 0.0025 + 0.0035 0.0018 + 0.0007 0.0018 + 0.0005 0.0027 + 0.0006 0.0031 + 0.001 1 Year (23 ± 5 °C) 0.0037 + 0.0035 0.0025 + 0.0007 0.0024 + 0.0005 0.0038 + 0.0006 0.0041 + 0.001 Temperature Coefficient/ °C Outside 18 to 28 °C 0.0005 + 0.0005 0.0005 + 0.0001 0.0005 + 0.0001 0.0005 + 0.0001 0.0005 + 0.0001 8845A Accuracy Accuracy is given as ± (% measurement + % of range) Range 100 mV 1 V 10 V 100 V 1000 V 24 Hour (23 ± 1 °C) 0.003 + 0.003 0.002 + 0.0006 0.0015 + 0.0004 0.002 + 0.0006 0.002 + 0.0006 90 Days (23 ± 5 °C) 0.004 + 0.0035 0.003 + 0.0007 0.002 + 0.0005 0.0035 + 0.0006 0.0035 + 0.0010 1 Year (23 ± 5 °C) 0.005 + 0.0035 0.004 + 0.0007 0.0035 + 0.0005 0.0045 + 0.0006 0.0045 + 0.0010 Temperature Coefficient/ °C Outside 18 to 28 °C 0.0005 + 0.0005 0.0005 + 0.0001 0.0005 + 0.0001 0.0005 + 0.0001 0.0005 + 0.0001 Additional Errors Digits 6½ 6½ 5½ 5½ 4½ NPLC 100 10 1 .2 0.02 Additional Noise Error 0 % of range 0 % of range 0.001 % of range 0.001 % of range + 20 µV 0.01 % of range + 20 µV AC Voltage Specifications AC Voltage specifications are for ac sinewave signals >5 % of range. For inputs from 1 % to 5 % of range and

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Introduction and Specifications
Electrical Specifications
1
1-11
8846A Accuracy
Accuracy is given as
±
(% measurement + % of range)
Range
24 Hour
(23
±
1
°
C)
90 Days
(23
±
5
°
C)
1 Year
(23
±
5
°
C)
Temperature
Coefficient/
°
C
Outside 18 to 28
°
C
100 mV
0.0025 + 0.003
0.0025 + 0.0035
0.0037 + 0.0035
0.0005 + 0.0005
1 V
0.0018 + 0.0006
0.0018 + 0.0007
0.0025 + 0.0007
0.0005 + 0.0001
10 V
0.0013 + 0.0004
0.0018 + 0.0005
0.0024 + 0.0005
0.0005 + 0.0001
100 V
0.0018 + 0.0006
0.0027 + 0.0006
0.0038 + 0.0006
0.0005 + 0.0001
1000 V
0.0018 + 0.0006
0.0031 + 0.001
0.0041 + 0.001
0.0005 + 0.0001
8845A Accuracy
Accuracy is given as
±
(% measurement + % of range)
Range
24 Hour
(23
±
1
°
C)
90 Days
(23
±
5
°
C)
1 Year
(23
±
5
°
C)
Temperature
Coefficient/
°
C
Outside 18 to 28
°
C
100 mV
0.003 + 0.003
0.004 + 0.0035
0.005 + 0.0035
0.0005 + 0.0005
1 V
0.002 + 0.0006
0.003 + 0.0007
0.004 + 0.0007
0.0005 + 0.0001
10 V
0.0015 + 0.0004
0.002 + 0.0005
0.0035 + 0.0005
0.0005 + 0.0001
100 V
0.002 + 0.0006
0.0035 + 0.0006
0.0045 + 0.0006
0.0005 + 0.0001
1000 V
0.002 + 0.0006
0.0035 + 0.0010
0.0045 + 0.0010
0.0005 + 0.0001
Additional Errors
Digits
NPLC
Additional Noise Error
6½
100
0 % of range
6½
10
0 % of range
5½
1
0.001 % of range
5½
.2
0.001 % of range + 20
µ
V
4½
0.02
0.01 % of range + 20
µ
V
AC Voltage Specifications
AC Voltage specifications are for ac sinewave signals >5 % of range. For inputs from 1 % to 5 % of range and <50 kHz,
add an additional error of 0.1 % of range, and for 50 to 100 kHz, add 0.13 % of range.
Maximum Input
......................................................
750 V rms or 1000 V peak (8845A), 1000 V rms or 1414 V peak
(8846A) or 8 x 10
7
Volts-Hertz product (whichever is less) for any
range.
Measurement Method
...........................................
AC-coupled true-rms. Measures the ac component of input with up to
1000 V dc bias on any range.
AC Filter Bandwidth:
Slow
....................................................................
3 Hz – 300 kHz
Medium
...............................................................
20 Hz – 300 kHz
Fast
.....................................................................
200 Hz – 300 kHz
Common Mode Rejection
.....................................
70 dB at 50 Hz or 60 Hz
±
0.1 % (1 k
Ω
unbalance)
Maximum Crest Factor
.........................................
5:1 at Full Scale
Additional Crest Factor Errors (<100 Hz)
...........
Crest Factor 1-2, 0.05 % of full scale
Crest Factor 2-3, 0.2 % of full scale
Crest Factor 3-4, 0.4 % of full scale
Crest Factor 4-5, 0.5 % of full scale