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2640A/2645A NetDAQ
Users Manual
6-34
ds308s.bmp
Apply Displays the suggested value to apply to the instrument from the calibrator.
Actual Enter the actual value applied to the instrument from the calibrator. Use a
value as close as possible to the suggested value for best calibration results.
Perform Calibration Step Apply the calibrator output to the instrument and then
click this button to perform the calibration.
Variations in the Display 6-37.
Under normal operation, the display presents various combinations of brightly and
dimly lit annunciators and digits. However, you may encounter other, random
irregularities across different areas of the display under the following
circumstances:
• After prolonged periods of displaying the same information.
• The display has not been used for a prolonged period
This phenomenon can be cleared by activating the entire display and leaving it on
overnight (or at least for several hours). Use the following procedure to keep the
display fully lit:
1. Turn the instrument power off.
2. Press the front panel
key and then apply power. Continue to hold the
key until the instrument beeps. The entire front panel display comes on
and stays on.
3. When you wish to return the display to normal, press any front panel key.
Service 6-38.
If the instrument fails to operate, check that operating instructions presented
earlier in this manual are being followed. If the problem cannot be remedied, send
the instrument, postage paid, to the nearest Fluke Service Center. A list of Service