930536-00 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 oscilloscope is calibrated at the factory prior to shipment. Schedule
an annual factory calibration as part of your routine maintenance.
HDO9000 incorporates automatic calibration routines to maintain
accuracy in between factory calibrations. Go to
Utilities > Preference
Setup > Calibration
to select the method used:
Stored Calibration
uses cached calibration files to recalibrate the
instrument at start-up. As long as the oscilloscope is used at or near
sea level within a temperature range of 19-30 °C, this calibration routine
should be sufficient to maintain specified performance. The instrument
will dynamically recalibrate if the temperature goes outside of the
stored calibration range. If you know you will be operating outside this
temperature range, do a Calibrate All to minimize recalibration.
Dynamic Calibration
recalibrates the oscilloscope at start-up and every
time there is a change to any of the acquisition settings that directly
affect the performance of the ADCs. When one setup is calibrated at a
particular ambient temperature, the calibration is entered in a calibration
table and reused for the duration of the session. These calibration entries
persist only for a single session; Dynamic Calibration restarts when the
instrument is restarted or you change the principal acquisition settings.
Two manual calibration routines can be used to recalibrate immediately
before sensitive measurements or when there is a significant change of
environmental characteristics that could affect the performance of the
ADCs:
Calibrate Current State
calibrates at the current vertical and horizontal
settings. This calibration takes 5 seconds but is valid for only this setup
at the current temperature ±2.5 °C.
Calibrate All
calibrates all possible combinations of vertical and
horizontal settings. This calibration is valid for the current temperature
and takes about four to five hours. Perform it when the ambient
temperature is stable from the time of calibration to the time of
operation. We recommend that you run Calibrate All when:
•
The instrument is operating outside the 19-30 °C range and the
operating temperature changes while outside that range. Calibrate
All is only valid for ± 2.5 °C of the last calibration temperature when
operating outside of the 19-30 °C range.
•
The instrument is moved to a new operating environment.
•
It has been six months since the previous manual calibration.
CAUTION.
Remove all inputs from the oscilloscope prior to manual
calibration.
MAINTENANCE
