Introduction; Measurement Setup; Making Measurements - HP 54501A Programming Reference Manual
Digitizing oscilloscope
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Also See for 54501A:
- Operation reference (146 pages) ,
- Service manual (90 pages) ,
- Getting started manual (46 pages)
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Algorithms
A
Introduction
One of
the
HP
54501A's primary
features
is
its
ability
to make automatic
measurements
on
displayed waveforms.
This appendix provides details on
how
automatic measurements are calculated and offers some tips on how
to
improve
results.
Measurement
Setup
Measurements typically
should be
made
at
the fastest
possible sweep
speed for
the most accurate measurement results.
The entire portion of
the
waveform
that
is
to be measured must be displayed
on the
oscilloscope.
That
is:
•
at least
one complete cycle
must be
displayed for period or
frequency
measurements
•
the entire pulse must be
displayed
for width measurements
•
the leading edge
of
the waveform
must be
displayed for risetime
measurements and
all
other edge
measurements
•
the trailing edge
of
the waveform
must
be
displayed
for falltime
measurements and all other edge measurements
Making
Measurements
If
more than
one
waveform, edge, or pulse
is
displayed,
the measurements
are made on the first
(leftmost) portion of the displayed waveform
that
can
be used.
If
there are not enough data points the oscilloscope will
display
s
with the measurement
results.
This
is
to remind you that the
results
may not be
as
accurate
as
possible.
It
is
recommended that
you
re-scale the
displayed waveform and make your measurement again.
HP
54501A
Programming
Algorithms
A-1
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