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8845A/8846A
Users Manual
1-16
AC Current
The following ac current specifications are for sinusoidal signals with amplitudes greater than 5 % of range. For inputs
from 1% to 5 % of range, add an additional error of 0.1 % of range.
Input Protection .................................................... Tool accessible 11 A/1000 V and 440 mA/1000 V fuses.
Measurement Method ........................................... ac-coupled true-rms, dc-coupled to the fuse and shunt (no blocking
capacitor)
AC Filter Bandwidth
Slow .................................................................... 3 Hz to 10 kHz
Medium ............................................................... 20 Hz to 10 kHz
Fast..................................................................... 200 Hz to 10 kHz
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
Input Characteristics
Resolution
Range
Full Scale
(6½ Digits)
4½ Digits 5½ Digits 6½ Digits
Shunt Resistance
(Ohms)
Burden Voltage
100 µA
[1]
100.0000 µA
10 nA 1 nA 100 pA
100Ω
<0.015 V
1 mA
[1]
1.000000 mA 100 nA 10 nA 1 nA
100Ω
<0.15 V
10 mA 10.00000 mA
1 µA
100 nA 10 nA
1 Ω
<0.025 V
100 mA 100.0000 mA 10 µA
1 µA
100 nA
1 Ω
<0.25 V
1 A 1.000000 A 100 µA 10 µA
1 µA 0.01 Ω
<0.05 V
3 A[2] 3.00000 A 1 mA 100 µA
10 µA 0.01 Ω
<0.05 V
10 A 10.00000 A 1 mA 100 µA 10 µA
0.01 Ω
<0.5 V
[1] 8846A Only
[2] Part of 10 A range
8846A Accuracy
Accuracy is given as ± (% measurement + % of range)
Range
Frequency
(Hz)
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 + 0.04 1.0 + 0.04 1.0 + 0.04 0.1 + 0.006
5 – 10 Hz 0.3 + 0.04 0.3 + 0.04 0.3 + 0.04 0.035 + 0.006
10 Hz – 5 kHz 0.1 + 0.04 0.1 + 0.04 0.1 + 0.04 0.015 + 0.006
100 µA
5 – 10 kHz 0.2 + 0.25 0.2 + 0.25 0.2 + 0.25 0.03 + 0.006
3 – 5 Hz 1.0 + 0.04 1.0 + 0.04 1.0 + 0.04 0.1 + 0.006
5 – 10 Hz 0.3 + 0.04 0.3 + 0.04 0.3 + 0.04 0.035 + 0.006
10 Hz – 5 kHz 0.1 + 0.04 0.1 + 0.04 0.1 + 0.04 0.015 + 0.006
1 mA
5 – 10 kHz 0.2 + 0.25 0.2 + 0.25 0.2 + 0.25 0.03 + 0.006
3 – 5 Hz 1.0 + 0.04 1.0 + 0.04 1.0 + 0.04 0.1 + 0.006
5 – 10 Hz 0.3 + 0.04 0.3 + 0.04 0.3 + 0.04 0.035 + 0.006
10 Hz – 5 kHz 0.1 + 0.04 0.1 + 0.04 0.1+ 0.04 0.015 + 0.006
10 mA
5 – 10 kHz 0.2 + 0.25 0.2 + 0.25 0.2 + 0.25 0.03 + 0.006
3 – 5 Hz 1.0 + 0.04 1.0 + 0.04 1.0 + 0.04 0.1 + 0.006
5 – 10 Hz 0.3 + 0.04 0.3 + 0.04 0.3 + 0.04 0.035 + 0.006
10 Hz – 5 kHz 0.1 + 0.04 0.1 + 0.04 0.1 + 0.04 0.015 + 0.006
100 mA
5 – 10 kHz 0.2 + 0.25 0.2 + 0.25 0.2 + 0.25 0.03 + 0.006
3 – 5 Hz 1.0 + 0.04 1.0 + 0.04 1.0 + 0.04 0.1 + 0.006
5 – 10 Hz 0.3 + 0.04 0.3 + 0.04 0.3 + 0.04 0.035 + 0.006
10 Hz – 5 kHz 0.1 + 0.04 0.1 + 0.04 0.1 + 0.04 0.015 + 0.006
1 A
[2]
5 – 10 kHz 0.35 + 0.7 0.35 + 0.7 0.35 + 0.7 0.03 + 0.006
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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