Equipment Required For Calibration; Preparing For Calibration - Fluke 8508A Service Manual

8508A
Service Manual
used to provide calibration uncertainties to be combined with the 8508A Relative to
Standards specifications to determine the achieved Multimeter performance after
calibration. (RSS summation is recommended).
See Chapter 5 for more details of combining 8508A Relative to Standards specifications
and calibration uncertainties.
The Multimeter should be thoroughly checked to ensure it is operating
correctly before attempting calibration. A performance verification
procedure appears later in this section.

Equipment Required for Calibration

The equipment required for Calibration and Performance Verification is listed in
Table 3-1.
Table 3-1. Required Equipment for Calibration Adjustments and Performance Verification
Equipment Name
Multifunction Calibrator
[2]
Amplifier
Signal Lead Set
Calibration Kit
PC/Network Printer/ Cables
Metrology bd software
Metrology Calibration Software
[1] Availability of a 1 MHz frequency reference signal may be required for 5720A frequency locking during 8508A frequency
calibration procedure.
[2] Best uncertainties are obtained by characterizing the outputs of the 5720A and 5725A at the points used for 8508A calibration.
Alternate equipment may be used, but users should ensure it provides adequate
calibration uncertainties. Performance of the Multimeter after calibration should be
determined by combining the applicable calibration uncertainties provided by the
calibration equipment with the 8508A Relative to Standards specifications. (RSS
summation is recommended).

Preparing for Calibration

The following procedures represent the recommended order of calibration, giving all the
necessary setup commands.
1. Allow the Multimeter to warm-up under power in the specified environment for at
2. Press the
3-10
[1] [2]
One 1 G
precision low thermal emf
4-wire shorting devices, and
connecting leads.
PC/Network Printer/ Cables
least 4 hours.
key, select
CLEAR
and display the menu.
DCV
Note
Minimum Use
Specifications
(ranges and accuracy)
Standard, two
to restore the power up default configuration
Pwr Up Dflt
Recommended Models
Fluke 5720A
Fluke 5725A
Fluke 5440-7003, -7004, -7005
Fluke 8508A-7000K
Any
Fluke MetBase
Fluke Metcal v6.11 or later