Datasheet

8 Fluke Corporation 8845A and 8846A
8845A 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
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
3 – 5 Hz 1.1 + 0.06 1.1 + 0.06 1.1 + 0.06 0.1 + 0.006
5 – 10 Hz 0.35 + 0.06 0.35 + 0.06 0.35 + 0.06 0.035 + 0.006
10 Hz – 5 kHz 0.15 + 0.06 0.15 + 0.06 0.15 + 0.06 0.015 + 0.006
3 A
[1][2]
5 – 10 kHz 0.35 + 0.7 0.35 + 0.7 0.35 + 0.7 0.03 + 0.006
3 – 5 Hz 1.1 + 0.04 1.1 + 0.04 1.1 + 0.04 0.2 + 0.006
5 – 10 Hz 0.35 + 0.04 0.35 + 0.04 0.35 + 0.04 0.1 + 0.006
10 Hz – 5 kHz 0.15 + 0.04 0.15 + 0.04 0.15 + 0.04 0.015 + 0.006
10 A
[2]
5 – 10 kHz 0.35 + 0.7 0.35 + 0.7 0.35 + 0.7 0.03 + 0.006
[1] Part of the 10 A range
[2] Available only at front panel connectors
Additional Low Frequency Errors
Error is stated as % of reading.
AC Filter
Frequency
3HZ (slow) 20HZ (medium) 200HZ (fast)
10 – 20 Hz 0 0.25 –
20 – 40 Hz 0 0.02 –
40 – 100 Hz 0 0.01 0.55
100 – 200 Hz 0 0 0.2
200 Hz – 1 kHz 0 0 0.02
> 1 kHz 0 0 0
Frequency
Gate Times .....................................................................Programmable to 1 s, 100 ms, and 10 ms.
Measurement Method..................................................Flexible counting technique. AC-coupled input using the ac voltage measurement
function.
Settling Considerations ..............................................When measuring frequency or period after a dc offset voltage change, errors may occur.
For the most accurate measurement, wait up to 1 second for the input blocking capacitor
to settle.
Measurement Considerations....................................To minimize measurement errors, shield inputs from external noise when measuring low-
voltage, low-frequency signals.
8846A Accuracy
Accuracy is given as ± % measurement
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 0.1 0.1 0.1 0.005
5 – 10 Hz 0.05 0.05 0.05 0.005
10 – 40 Hz 0.03 0.03 0.03 0.001
40 Hz – 300 kHz 0.006 0.01 0.01 0.001
100 mV to
1000 V
[1][2]
300 kHz – 1 MHz 0.006 0.01 0.01 0.001
[1] Input >100 mV. For 10 – 100 mV, multiply percent measurement error by 10.
[2] Limited to 8 X 10
7
volt-Hertz