Fluke 5730A User Manual

Front-Panel Operation
Linearity Check with Offset and Scale 4
4-41
Linearity Check with Offset and Scale
With the 5730A Calibrator offset and scaling features, a UUT offset and scale errors can
be removed to isolate and display linearity error. The subsequent procedure is an example
that uses the Offset and Scale selection to determine both scale and linearity error of a 4
1/2-digit DMM. In this example, the DMM is set to the 20 V dc range, and the Calibrator
is connected to the DMM. Figure 4-10 illustrates all three types of errors that are detected
by the Calibrator. The numbers in the graph correspond to the conditions encountered in
the example.
Calibrator Voltage
0
-1.3 mV
Meter Reading
Offset Error =
+1.3 mV
10.000
10.007
19.900
19.9017
19.8987
10.000208
9.993208
Linear
Response
Actual Meter
Response
Linearity
Error
Scale Error
19.9000
Ideal
Response
hhp020.eps
Figure 4-10. Meter Response vs. Stimulus
1. Set the Calibrator to 0 mV in standby.
2. Use the output adjustment controls (the rotary knob and ) to adjust the
Calibrator output for a reading of 0 V on the DMM. The displays shows:
dBm
kHz
1.0000
42.00000
+/- 3% (1 year) 213 days since calibration
12/21/12 10:52am
External
Sense
OFF
External
Guard
OFF
Wideband
OFF
Setup
Menu
Standby
Error
> +999.9999%
mV
Auto Range 220 mV
- 1.30000
External
Sense
OFF
Reference
0.00000 mV
hhp136.eps

Fluke 5730A Specifications

General

Type	Multifunction Calibrator
Resistance Range	0 to 1 GΩ
AC Voltage Frequency	10 Hz to 1 MHz
Display	Color LCD
Interfaces	RS-232, Ethernet
Weight	18 kg
DC Voltage Range	0 to ±1100 V
Dimensions	172 mm H x 432 mm W x 457 mm D (6.8 in H x 17 in W x 18 in D)