929955-00 Rev A
40
Cleaning
Clean the outside of the oscilloscope using a soft cloth moistened
with water or isopropyl alcohol solution. Do not use harsh or abrasive
cleansers. Dry thoroughly before using. Do not submerge the instrument
or allow moisture to penetrate it.
CAUTION.
Do not attempt to clean internal parts.
Language Selection
To change the language that appears on the oscilloscope touch screen, from
the menu bar, choose
Utilities > Preference Setup > Preferences
and make
your
Language
selection.
You can also select at power on by touching the Language icon
when it appears at the upper-right of the touch screen.
Reboot the oscilloscope after changing language.
Calibration
The HDO4000A is calibrated at the factory prior to being shipped. This
calibration is run at 23° C (± 2° C) and is valid for temperatures ± 5° C of
the original calibration temperature. Within this temperature range, the
HDO4000A will meet all specifications.
Warm up the HDO4000A for at least 20 minutes prior to use. During the
warm-up period, the oscilloscope will automatically initiate calibrations to
ensure that it is always calibrated.
When the oscilloscope is used outside of the factory calibration
temperature range, a user-invoked temperature dependent calibration is
recommended. There are two options for this calibration: Calibrate All or
Calibrate Current Setting.
Calibrate All
- All possible combinations of vertical and horizontal settings
are calibrated at the current temperature. This calibration is valid for the
current temperature ± 5° C and takes about 50 minutes.
Calibrate Current Setting
- The oscilloscope is calibrated at the current
vertical and horizontal settings only. This calibration is valid for these
settings at the current temperature ± 5° C and takes under 30 seconds.
It is also recommended that the HDO4000A be calibrated when it has
been more than one month since the previous calibration.
CAUTION.
Remove all inputs from the oscilloscope prior to
calibration.
MAINTENANCE
