Target Selection - Fluke Calibration 9500B Calibration Manual

9500B
Calibration Manual
Do not press the ACCEPT CALIB softkey while using the Adjustment
screen unless you are sure that you wish to perform an authorized
recalibration of the selected hardware configuration at the selected target
value. To prevent accidental calibrations due to inadvertent use of the
CALIB key, initial use of the Adjustment screen takes place with the 9500B
output OFF. If you accidentally press the ACCEPT CALIB key, or attempt a
calibration without first turning the 9500B output on, the following error
message will be shown:
Under output-off conditions, the existing, stored calibration corrections will remain
unchanged.
Limits are placed on the extent to which the Output Amplitude value can be
changed. In our example at 1.0000 mV, the amplitude cannot be set above
1.4500 mV, nor below 0.8880 mV. Beyond these limits the error message
'Outside amplitude range' is given.

Target Selection

On the Adjustment screen, using the NEXT TARGET and PREV TARGET soft keys, it
is possible to move backwards and forwards along the current target list for the selected
function without returning to the Target Selection screen. The lists are in Front Panel
Base Calibration by Functions.
For example: if the present Cal Range in DC/Square function DC Positive target is Cal
Range 2, and the Target 1 (low — +2.3000 mV) is selected, then pressing the NEXT
TARGET soft key transfers to Cal Range 2, Target 2 (high — +5.0000 mV).
On the other hand: from the same target, then pressing the PREV TARGET soft key
transfers to Cal Range 1, Target 2 (high — +1.9000 mV).
94
Output must be ON for CAL
•
Ensure that the Adjustment screen is displayed, with the cursor on the O/P
Amplitude value.
•
Set the Output ON. The displayed output value has already followed to match the
target value, so the external Standard measurement will include the error between
the output value and the target value.
• With the cursor on the O/P Amplitude value, use the ϑ, Κ, Λ and Μ keys to
adjust the output amplitude until the external Standard measurement is the same
as the target value. Note that the O/P Amplitude display will now include the
error.
•
Once you are satisfied that the external measurement matches the Target value,
perform the adjustment by pressing the ACCEPT CALIB soft key. The displayed
O/P Amplitude value returns to the Target value, the external Standard
measurement remains the same as the Target value and the adjustment at this
target is complete.
Note
Note