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Introduction and Specifications
Electrical Specifications 1
1-13
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 + 0.03 1.0 + 0.04 1.0 + 0.04 0.10 + 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 0.2 + 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
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
750 V
100 – 300 kHz
[1] [2]
4.0 + 0.5 4.0 + 0.5 4.0 + 0.5 0.2 + 0.02
[1] Typically 30 % reading error at 1 MHz
[2] 750 Volt range is limited to 8 X 10
7
volt-Hertz
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
Resistance
Specifications are for 4-wire resistance function, 2 x 4-wire resistance, or 2-wire resistance with zero. If zero is not used,
add 0.2 Ω for 2-wire resistance plus lead resistance, and add 20 mΩ for 2 x 4-wire resistance function.
Measurement Method ........................................... Current source referenced to LO input.
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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