HP 54501A - Frequency; Duty Cycle; Risetime; Falltime

•
width
The
-
width
algorithm
has
standard and
user-defined considerations:
if
first
edge is
rising
then
-
width
=
second rising
edge
•
first
falling
edge
else
•
width
=
first
rising
edge
•
first falling
edge
Period
if
first
edge
is
rising
then
period
=
second
rising
edge
-
first
rising
edge
else
Frequency
Duty
Cycle
Risetime
Falttime
Vmax
Vmin
Vp-p
Vtop
period
=
second
falling
edge
•
first
falling
edge
frequency
=
I/period
duty
cycle
=
(+
width/period)
*
100
Note
+
width
is
always
calculated
using
mid-threshold.
risetime
=
time
at
upper
threshold
-
time at
lower
threshold
falltime
=
time
at
lower
threshold
-
time
at
upper
threshold
Vmax
=
voltage
of
the
maximum
point
on
screen
Vmin
=
voltage
of
the
minimum point
on screen
Vp-p
=:
Vmax
•
Vmin
Vtop
=
most prevalent point above
waveform
midpoint
HP
54501A
Programming