Cleaning The Exterior; Calibration; Calibrating The 5700A/5720A Series Ii To External Standards - Fluke 5700A Series II Operator's Manual

5700A/5720A Series II
Operators Manual

7-4. Cleaning the Exterior

To keep the calibrator looking like new, clean the case, front panel keys, and lens using a
soft cloth slightly dampened with either water or a non-abrasive mild cleaning solution
that is not harmful to plastics.
Do not use aromatic hydrocarbons or chlorinated solvents for
cleaning. They can damage the plastic materials used in the
calibrator.

7-5. Calibration

This chapter provides procedures for calibrating the 5700A/5720A Series II to external
standards, adjusting the range if necessary, and for performing a calibration check.
Your calibrator is calibrated at the factory with constants that are traceable to the U.S.
National Bureau of Standards. In order to maintain traceability, you only need to met the
following requirements.
•
•
Calibration check and range calibration are optional procedures that are provided for
enhancing the accuracy if needed for special requirements.
For a description of the calibration process and the theory behind its use to establish
traceability to national standards, see Chapter 1 of this manual. Included in this chapter is
a description of the calibration check feature, and how it can be used to develop a
performance history for the calibrator. Detailed calibration theory can be found in the
5700A/5720A Series II Service Manual.

7-6. Calibrating the 5700A/5720A Series II to External Standards

You must calibrate to external standards at the beginning of the calibration cycle. The
length of the cycle (24 hours, 90 days, 180 days, or one year) is selected in a setup menu
described in Chapter 4.
To calibrate the 5700A/5720A Series II, you apply three portable standards to the output
binding posts: a 10V dc voltage standard, a 1Ω resistance standard, and a 10 kΩ
resistance standard. The following standards are recommended:
•
•
•
Use the following Low Thermal Leads for all connections:
•
•
7-6
Calibration to external standards must be completed at the beginning of the
calibration cycle
Performance verification must be completed every two years. (See the 5700A/5720A
Series II Service Manual for procedures.)
Model 732A or 732B DC Reference Standard
Model 742A-1 1Ω Resistance Standard
Model 742A-10k 10Ω Resistance Standard
When calibrating the 5700A, use either the connector set 5440A-7002 (banana plugs)
or the set 5440A-7003 (spade lugs).
When calibrating the 5720A, use the set 5440A-7003 (spade lugs).
Caution