Fluke 5730A User Manual

Operator Maintenance and Calibration
Range Adjustment 7
7-13
16. If the largest shift is acceptable, touch Save to save the results, thus adjusting the
Calibrator. If the security passcode has not already been entered, the Calibrator will
prompt to do so before the results are saved. Touch Discard to discard the results
from the calibration.
Range Adjustment
Once calibration is complete, it may be necessary to make further adjustments to the
range. Range adjustment is accomplished by adjusting a range constant, which is an
additional gain multiplier. Although range calibration is not needed in order to meet total
uncertainty specifications, they are useful for tuning the 5730A Calibrator so that its
values are closer to in-house standards.
Use an in-house laboratory standard to adjust the range constants. The subsequent
procedure for adjusting the range constants is designed for laboratory standard values that
are between 45 % and 95 % of the range’s full-scale value.
Once the range constant is adjusted, the new constant remains active until the next
calibration, at which time all range constant multipliers are restored to 1. All range
adjustments can be erased by selecting Restore Factory Defaults from the Calibration
Menu.
Before the subsequent procedure is started, make sure the equipment necessary including
in-house laboratory standards where necessary, are on hand.
The subsequent example procedure adjusts the 220 V dc range constant with the listed
equipment:
• 732B DC reference standard
• 752A Reference Divider
• Null Detector: Fluke Calibration 8508A 8.5 Digit Reference Multimeter
• Low Thermal Test Leads: 5440A-7003 (spade lugs)
Note
5440A-7002 and 5440A-7003 Low Thermal Lead sets include a third cable
specifically designed for completing Artifact Calibration. The 5730A-7002
and 5730A-7003 Low Thermal Lead sets do not include the third cable for
connection between reference standards.
Proceed as follows to adjust the 220 V dc range constant (the procedure is similar for all
ranges). The calibration to external standards must be completed before this procedure is
done.

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)