Performance Verification - Fluke 8508A User Manual

8508A
Users Manual
To Calibrate at Spot Frequencies
Spot Calibration is available only when in AC Voltage function with Spot already
selected on the
input frequency to a non-nominal RMS value. In subsequent use, frequency response
flatness errors are reduced within ±10 % of the calibrated spot frequency.
Assuming that the 8508A is in calibration mode and the setup is connected as described
above under Initial Setup and Connections for routine calibration. The configuration
defaults to
Proceed as follows:
1. Select
2. Press the
3. Press the
4. Select
5. Select the soft key for the required spot, 1 to 6 (
6. Key in the true RMS output value of the standard, then select
7. Press
8. On the Calibrator, set
9. On the 8508A, select other spots as required, repeating the process for each selection.
10. Exit from the

Performance Verification

The 8508A is a Digital Reference Multimeter offering state of the art performance. This
procedure is intended as a guide for qualified metrology personnel who have access to a
standards laboratory with equipment available to verify the performance of an instrument
of this level of accuracy. The procedure assumes users are familiar with relevant best
measurement practice, and will take precautions to avoid introducing errors from sources
such as thermal emfs, leakages, electromagnetic interference, etc. It also assumes users
will make adequate allowance for equipment stabilization and measurement settling
times.
This routine performance verification procedure describes the test points and sequence of
operations required to check the 8508A and assumes calibration references of adequate
traceable uncertainty are available – in this case a Fluke 5720A calibrator and 5725A
amplifier used with an 8508A-7000 Calibration Kit. The procedure assumes the user is
able to calibrate and characterize the calibration standards, without describing the process
required to do so. Refer to the Routine Calibration section for more information on the
characterization process.
6-30
ACV CONFIG
and
Tfer RESL6
and select the required Range.
ACV
key and select
CONFIG
key.
CAL
The menu is displayed.
CALIBRATION
.
Set
The menu is displayed.
SPOT CAL
The SPOT (x = 1 to 6) RMS menu is displayed.
The
SPOT FREQUENCY
spot will be calibrated.
to initiate the calibration operation.
SAMPLE
Calibration is complete when the
measurement is displayed. The menu display reverts to the
STANDBY
SPOT CAL
menu. Each spot (six per range) can be calibrated at a valid
(both required).
.
Spot
menu is displayed, showing the frequency at which the
legend goes out and the calibrated
Busy
.
menu by pressing any hard key.
to ).
Sp1 Sp6
.
Enter
menu.
SPOT CAL