Fluke 5700A Series II User Manual

5700A/5720A Series II
Operators Manual
4-44
4-46. Linearity Error
Linearity error occurs when the response curve of a meter deviates from a straight line.
This type of error is measured by fixing zero and near-full-scale endpoints on the
response curve, drawing a line through the points, then measuring how far the meter
response deviates from the straight line at various points. The error value is computed
relative to the selected full-scale point. The formula for linearity error is:
Linearity Error =
(Nominal setting)-(Adjusted 5720A setting)
(Nominal full scale)
Where the “nominal setting” is calculated by subtracting the offset error and a
proportional part of the scale error.
Figure 4-9 illustrates linearity error with both offset and scale errors assumed to be zero.
The formula for linearity error yields:
Linearity Error =
10 0 9 993
19 9
..
.
−
= 0.000352 =+0.0352%
CALIBRATOR
SETTING
0
METER READING
19.9V
LINEARITY
ERROR =
+7 mV
19.9V
LINEAR RESPONSE
ACTUAL
RESPONSE
10.0V
9.993V
10.0V
Figure 4-9. Linearity Error
4-47. Combining the Error Types
The actual error of a meter is the combination of all three types of errors. The calibrator
uses
o and Sto allow you to separately display all three types of errors directly,
without having to do any calculation.

Fluke 5700A Series II Specifications

General

Type	Multifunction Calibrator
Operating Temperature	0 °C to 50 °C
Storage Temperature	-20 °C to 70 °C
Voltage Range	0 to 1100 V
DC Voltage Range	10 μV to 1100 V
Frequency Range	1 MHz
Humidity	non-condensing
Power Requirements	100 V to 240 V