Input Characteristics - Fluke 8845A User Manual

8845A/8846A
Users Manual

Input Characteristics

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