Stop Marker - HP 54501A Operation Reference

.6.t markers
r1::N �
ma r k e r s
�"t mo c k " ,
s t o p mo c k "
54501/Wr64
start marker

stop marker

This selection key toggles the time markers on and off. With the .6.t
function turned on the next two fields are activated allowing you to control
the two markers individually
The markers are placed on the display respective of the trigger point.
Positive time values are to the right of the trigger point and negative time
values are to the left. Delta t values are determined by the following:
is no sueh thing
Remember, there
the start marker is placed later in time than the stop marker.
is
lIdelta t the inverse of delta t. Since the inverse· of time
this
ratio produces an answer in frequency, however, be alerted that
markers are placed across parts of a waveform of differing time frames the
answer may not be valid.
frequency in a burst that
can place the time markers across the burst (at similar points on the
waveform) and determine the frequency of the burst.
To set the start marker press the function selection key to bighlight the
This
field. makes the start marker field active. Set the marker using the
knob.
is
The start marker represented with long dashes.
is identical to the start marker, except that it is
The stop marker
represented by short dashes.
stop marker · start marker
as
negative delta
This is
feature useful
is different from the rest of the waveform. You
= delta t
t, this
only means that
is frequency,
if the
if
you are looking for the
Delta t!Delta V Menu
8-3