HP 83480A - Timing de Nitions

Waveform Measurements
Standard Waveform Denitions
Timing denitions
Once the edges and transition points have been dened, timing
measurements are made. Timing measurements are made on the rst rising
or falling edge on the display.
Rise time Rise time = time at the upper threshold 0 time at the lower threshold on the
rst rising edge
Fall
time F
all
time
=
time
at
the
lower
threshold
0
time
at
the
upper
threshold
on
the
rst
falling
edge
P
eriod
If
the
rst
edge
is
rising,
period
=
mid-threshold
crossing
of
second
rising
edge
0
mid-threshold
crossing
of
rst
rising
edge
Else
,
period
=
mid-threshold
crossing
of
second falling
edge
0
mid-threshold
crossing
of
rst
falling
edge
F
or
an
eye
measurement
period,
period
=
time
of
second
eye
crossing
0
time
of
rst
eye crossing
Frequency Frequency = 1/period
7-17