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5730A
Operators Manual
5730A Calibration
The 5730A Calibrator makes use of internal check standards and measurement systems.
As a result, it can be completely calibrated in place to full specifications with a small
number of convenient, portable, environmentally-tolerant standards available from Fluke
Calibration. This procedure is traceable to military standard requirements.
When manufactured, each Product is calibrated and thoroughly verified with process
metrology and calibration standards traceable to the International System of units (SI)
through well-recognized national metrology institutes. A certificate of calibration that is
accredited to ISO 17025 is included.
The calibration verification procedure is recommended every 2 years or as required by
established policies. This procedure involves no adjustments. It ensures internal processes
are in control, and establishes parallel external traceability paths for internal functions
such as ac transfers that are never adjusted or corrected.
The Artifact Calibration Process
Calibration requires only three external standards or artifacts: 10 V, 1 Ω, and 10 kΩ.
Environmentally-controlled internal check standards provide the primary reference
points. A stored table of calibration constants defines additional reference points for
controlling the output. Traceable calibration and adjustment to the specified level of
performance is accomplished in a semi-automated process that revises this table.
When finished with artifact calibration, but before the new constants are saved, the
5730A Calibrator presents the proposed adjustments as +/- ppm of range and percentage
change in specification for each range and function. A list of changes can be sent to the
computer through the serial port, USB device port, Ethernet port, or the IEEE-488 port
using the remote command: CAL_RPT? CHECK. Also on completion of calibration, the
Calibrator shows the largest proposed change.
Calibration can be completed as far as deriving and printing the proposed adjustments
without entering the calibration protection passcode. To save the changes in non-volatile
memory to adjust future outputs from the Calibrator, the passcode must be entered from
the front panel or with a remote command. The passcode entry menu is shown on the
display when necessary.
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