Display Mode Key; Norm - HP 54501A Operation Reference

Display Mode
Key

norm

DISPLAY
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Display Menu
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The Display mode key allows you to select from one of the three display
modes. They are:
•
normal
•
averaged
•
envelope
The nonn mode allows you to set the time parameters for displaying data,
or persistence. The range in the variable persistence mode is from
minimum,
very fast overwriting and upating the display, to infinite
variable. settings in between, from
can
you preset your data display records to any of the persistence settings.
Settings less than inf inite will display data for the specified period of time
and then overwrite old data.
•
Minimum persistence
is displayed it overwrites the previous data. The current display
always the most recent acquisition.
•
Fast persistence settings are useful when the input signal is cbanging
and you need immediate feedback.
•
More persistence is useful when observil)g long-term changes in the
signal or low signal repetition rates.
•
Infinite persistence
signal'noise, jilter,
storage oscilloscope.
If
you use the keypad to change persistence settings, any entry longer
10 seconds will display the message
infinite
persistence to
message and set persistence to
200 ms
to 10 seconds.
is very fast overwrite.
can
be used for worst
drift,
etc. In this mode the
value out o f
and any entry less than 200
minimum.
with
This means that
As
each new acquisition
-
case
characterizations of
used
HP 5450lA is
range,
set to limit
and set
ms
will display the same
is
as a
than