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Models LB480A/LB680A USB PowerSensor+™
Product Manual PPA (Pulse Profiling Application)
Now select Delta Marker from the Markers 1 drop down shown below and click anywhere on the trace (the falling
edge in this example) to position the second element of the marker pair. The annotation in the Results pane will now
indicate the differential marker 1(Delta Relative) value in time and magnitude as well as its absolute value (Delta
Absolute). Also, the relative marker value will appear above the grid on the measurement view (DMk1). Follow this
same process to setup the other markers. You can setup all the markers in either mode (Normal or Delta) but only one
marker can be active at a time. Simply click on the marker to activate and read its value. You can also read the
measured value in the Results pane. While the Delta Marker is convenient for measuring the time between two points
(pulse repetition time, pulse width, etc.) it can also be used to measure frequency. As the delta marker is moved you
will notice in the Results pane the inverse of the time (frequency) is also reported: So if you placed the normal marker
on one pulse and the delta marker on the next adjacent pulse you could read the PRF (pulse repetition frequency).
NOTE: You can highlight in the Panorama view without switching modes. However, if you attempt to highlight in the
Measurement view while in a different mode (Markers or Gates) you will affect the positioning of the individual
markers or gates.
The marker search feature is covered next in additon to the remaining toolbar controls.
Revision: 08/02/11
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