Fluke 8845A FE 8845A & 8846A Users Manual - Page 22

Input Characteristics, 8846A Accuracy, by <100 pf

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8845A/8846A Users Manual Input Characteristics Range 100 mV 1 V 10 V 100 V 1000 V Full Scale (6½ Digits) 100.0000 mV 1.000000 V 10.00000 V 100.0000 V 1,000.000 V 4½ Digits 10 µV 100 µV 1 mV 10 mV 100 mV Resolution 5½ Digits 1 µV 10 µV 100 µV 1 mV 10 mV 6½ Digits 100 nV 1 µV 10 µV 100 µV 1 mV Input Impedance 1 MΩ ±2 % shunted by

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8845A/8846A
Users Manual
1-12
Input Characteristics
Resolution
Range
Full Scale
(6½ Digits)
4½ Digits
5½ Digits
6½ Digits
Input Impedance
100 mV
100.0000 mV
10 μV
1 μV
100 nV
1 V
1.000000 V
100 μV
10 μV
1 μV
10 V
10.00000 V
1 mV
100 μV
10 μV
100 V
100.0000 V
10 mV
1 mV
100 μV
1000 V
1,000.000 V
100 mV
10 mV
1 mV
1 M
Ω
±
2 % shunted
by <100 pf
8846A Accuracy
Accuracy is given as
±
(% measurement + % of range)
Range
Frequency
24 Hour
(23
±
1
°
C)
90 Days
(23
±
5
°
C)
1 Year
(23
±
5
°
C)
Temperature
Coefficient/
°
C
Outside 18 to 28
°
C
3 – 5 Hz
1.0 + 0.03
1.0 + 0.04
1.0 + 0.04
0.1 + 0.004
5 – 10 Hz
0.35 + 0.03
0.35 + 0.04
0.35 + 0.04
0.035 + 0.004
10
Hz – 20 kHz
0.04 + 0.03
0.05 + 0.04
0.06 + 0.04
0.005 + 0.004
20 – 50 kHz
0.1 + 0.05
0.11 + 0.05
0.12 + 0.05
0.011 + 0.005
50 – 100 kHz
0.55 + 0.08
0.6 + 0.08
0.6 + 0.08
0.06 + 0.008
100 mV
100 – 300 kHz
[1]
4.0 + 0.50
4.0 + 0.50
4.0 + 0.50
0.20 + 0.02
3 – 5 Hz
1.0 + 0.02
1.0 + 0.03
1.0 + 0.03
0.1 + 0.003
5 – 10 Hz
0.35 + 0.02
0.35 + 0.03
0.35 + 0.03
0.035 + 0.003
10
Hz – 20 kHz
0.04 + 0.02
0.05 + 0.03
0.06 + 0.03
0.005 + 0.003
20 – 50 kHz
0.1 + 0.04
0.11 + 0.05
0.12 + 0.05
0.011 + 0.005
50 – 100 kHz
0.55 + 0.08
0.6 + 0.08
0.6 + 0.08
0.06 + 0.008
1 V
100 – 300 kHz
[1]
4.0 + 0.50
4.0 + 0.50
4.0 + 0.50
0.2 + 0.02
3 – 5 Hz
1.0 + 0.02
1.0 + 0.03
1.0 + 0.03
0.1 + 0.003
5 – 10 Hz
0.35 + 0.02
0.35 + 0.03
0.35 + 0.03
0.035 + 0.003
10
Hz – 20 kHz
0.04 + 0.02
0.05 + 0.03
0.06 + 0.03
0.005 + 0.003
20 – 50 kHz
0.1 + 0.04
0.11 + 0.05
0.12 + 0.05
0.011 + 0.005
50 – 100 kHz
0.55 + 0.08
0.6 + 0.08
0.6 + 0.08
0.06 + 0.008
10 V
100 – 300 kHz
[1]
4.0 + 0.50
4.0 + 0.50
4.0 + 0.50
0.2 + 0.02
3 – 5 Hz
1.0 + 0.02
1.0 + 0.03
1.0 + 0.03
0.1 + 0.003
5 – 10 Hz
0.35 + 0.02
0.35 + 0.03
0.35 + 0.03
0.035 + 0.003
10
Hz – 20 kHz
0.04 + 0.02
0.05 + 0.03
0.06 + 0.03
0.005 + 0.003
20 – 50 kHz
0.1 + 0.04
0.11 + 0.05
0.12 + 0.05
0.011 + 0.005
50 – 100 kHz
0.55 + 0.08
0.6 + 0.08
0.6 + 0.08
0.06 + 0.008
100 V
100 –- 300 kHz
[1]
4.0 + 0.50
4.0 + 0.50
4.0 + 0.50
0.2 + 0.02
3 – 5 Hz
1.0 + 0.02
1.0 + 0.03
1.0 + 0.03
0.1 + 0.003
5 – 10 Hz
0.35 + 0.02
0.35 + 0.03
0.35 + 0.03
0.035 + 0.003
10
Hz – 20 kHz
0.04 + 0.02
0.05 + 0.03
0.06 + 0.03
0.005 + 0.003
20 – 50 kHz
0.1 + 0.04
0.11 + 0.05
0.12 + 0.05
0.011 + 0.005
50 – 100 kHz
[2]
0.55 + 0.08
0.6 + 0.08
0.6 + 0.08
0.06 + 0.008
1000 V
100 – 300 kHz
[1][2]
4.0 + 0.5
4.0 + 0.50
4.0 + 0.50
0.2 + 0.02
[1] Typically 30 % reading error at 1 MHz
[2]
1000 Volt range is limited to 8 X 10
7
volt-Hertz