HP 54501A Operation Reference page 115

meas
meos
d e
I i m i t
s t a n d a r d
d e f i n e d
t h r e s h o l ds
m e a s u r ements
+w i dth
I
_ i dth
f c om
1 a t m i d
f r om edge
2 o t m i d
545011WF67
Threshold settings apply to all user der med front panel measurements.
This is useful when measuring for excessive overshoot or ringing.
feature
By defining your own measurements you
your own choosing and test from the front panel, or set the
the limit test and allow the oscilloscope to report without your supervision.
I f the user defined upper and lower thresholds are placed too
it
is possible the H P 54501A will not be able to
close together
determine the mid-point. The message 'not found' will be
displayed in the measurementf actors area.
Measurements
allows you to der me more parameters, the horizontal test
conditions, for three specific front panel keypad measurements:
•
Delay
•
+ width
•
-
width
When any of the three measurements are selected the measurement
made on the selected edge count, slope, and transition point. The
5450lA
starts counting edges from the left edge of the screen, not at the
reference point. The selected edge must be displayed.
displayed, the message not found
area below the screen.
can
test for pass/fail criteria of
Note
If
is displayed in the measurement results
Define Measure Menu
HP 5450lA
in
is
HP
is
the edge not
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