Filter
Top Products
Chapter 4: Calibrating and Adjusting
4–3
Operating Hints
Some knowledge of operating the Agilent Technologies 54835A/45A/46A oscilloscope is
helpful. However, procedures are written so that little experience is necessary. The
following hints will speed progress of the procedures.
When using many averages, it often takes awhile for a waveform display to stabilize after
a change. When a front panel control on the oscilloscope is changed, averaging
automatically restarts. When the input signal or an adjustment is changed, the
oscilloscope averages new data with the old, so it takes longer for the waveform to
stabilize to the new value. Press the Clear Display key while changing input signals or
adjustments. Clearing the display restarts averaging, which gives a quicker indication
of the result of the change.
Loading Default Oscilloscope Settings
To reset the oscilloscope to default conditions, press the Default Setup key.
Loading New Software
This oscilloscope stores its operating system code on a hard disk drive. New code is
loaded into the oscilloscope by using the floppy disk drive. It is rarely necessary to reload
the code. You should load the code only if prompted by a troubleshooting procedure, or
if you want to load a later version of code.
To load new code, enable the graphical interface, then select Upgrade Software from
the Utilities menu. You can then follow the instructions on the screen, inserting diskettes
as necessary.
Calibration Procedures
The procedures start with the next paragraphs. Unless specified elsewhere, procedures
must be followed in the order given. Display checks are optional and independent of
other procedures.
WARNING SHOCK HAZARD!
Read the Safety information at the back of this guide before performing adjustment procedures.
Failure to observe safety precautions may result in electrical shock.
WARNING INJURY CAN RESULT!
Install the fan safety shield (included in the Service Kit) if you remove the oscilloscope cover.
Without this shield, the oscilloscope fan blades are exposed and can cause injury.
Let the Oscilloscope Warm Up Before Adjusting
Warm up the oscilloscope for 30 minutes before starting adjustment procedures. Failure to allow warm-
up may result in inaccurate calibration.