Detailed accuracy specifications – Fluke 189 User Manual

Page 89

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Specifications

Detailed Accuracy Specifications

7

7-5

Detailed Accuracy Specifications

Accuracy is specified for a period of one year after calibration, at 18

°

C to 28

°

C (64

°

F to 82

°

F), with relative humidity to 90

%. Accuracy specifications are given as:

±

( [ % of reading ] + [ number of least significant digits ] )

AC mV, AC V, AC µA, AC mA, and AC A specifications are ac coupled, true rms and are valid from 5 % of range to
100 % of range. AC crest factor can be up to 3.0 at full-scale, 6.0 at half-scale except the 3000 mV and 1000 V ranges
where it is 1.5 at full scale, 3.0 at half-scale.

Accuracy

Function

Range

Resolution

45 Hz-1 kHz

20-45 Hz

1 kHz-10 kHz

10 kHz-20 kHz 20 kHz-100 kHz

AC mV

1, 2

50.000 mV

0.001 mV

0.4 % + 40

2 % + 80

5 % + 40

5.5 % + 40

15 % + 40

500.00 mV

0.01 mV

0.4 % + 40

2 % + 80

5 % + 40

5.5 % + 40

8 % + 40

3000.0 mV

0.1 mV

0.4 % + 40

2 % + 80

0.4 % + 40

1.5 % + 40

8 % + 40

AC V

1, 2

5.0000 V

0.0001 V

0.4 % + 40

2 % + 80

0.4 % + 40

1.5 % + 40

8 % + 40

50.000 V

0.001 V

0.4 % + 40

2 % + 80

0.4 % + 40

1.5 % + 40

8 % + 40

500.00 V

0.01 V

0.4 % + 40

2 % + 80

0.4 % + 40

Not specified

Not specified

1000.0 V

0.1 V

0.4 % + 40

2 % + 80

0.4 % + 40

Not specified

Not specified

dBV

52 to

6

0.01 dB

0.1 dB

0.2 dB

0.5 dB

0.5 dB

1.4 dB

6 to +34

0.01 dB

0.1 dB

0.2 dB

0.1 dB

0.2 dB

0.8 dB

+34 to +60

0.01 dB

0.1 dB

0.2 dB

0.1 dB

Not specified

Not specified

1. For the 5,000 count mode, divide the number of least significant digits (counts) by 10.
2. A residual reading of 8 to 180 digits with leads shorted, will not affect stated accuracy above 5 % of range.

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