1117
Peak Search
More Information
When Continuous Peak Search is turned on a peak search is immediately performed and then is repeated
after each sweep. If Continuous Peak Search is turned on with the selected marker off, the selected
marker is set to Normal at the center of the screen, and then a peak search is immediately performed and
subsequently repeated after each sweep.
When in Continuous Peak Search, *OPC will not return true, nor will READ or MEASure return any
data, until the sweep is complete and the marker has been re-peaked. Note further that if the test set is in
a measurement such as averaging, and Continuous Peak Search is on, the entire measurement is allowed
to complete (i.e., all the averages taken up to the average number) before the repeak takes place, and only
THEN will *OPC go true and READ or MEASure return data.
When Continuous Peak Search is turned on for a marker, a little “hat” is placed above the marker.
Pk-Pk Search
Finds and displays the amplitude and frequency (or time, if in zero span) differences between the highest
and lowest y-axis value. It places the selected marker on the minimum value on its selected trace. And it
places that marker’s reference marker on the peak of its selected trace. This function turns on the
reference marker and sets its mode to Fixed if it is not already on. (These markers may be on two
different traces.)
The rules for finding the maximum peak are exactly the same as for Peak Search, including the use of
the peak criteria rules. However, the minimum trace value is not required to meet any criteria other than
being the minimum y-axis value in the trace.
When Pk-Pk Search is successful, a message is displayed on the message line.
If the selected marker is off, a delta type marker is turned on and the peak-to-peak search is done. If the
selected marker is on, but it is not a delta marker, then it is changed to delta which turns on the reference
marker if needed, and then it performs the peak-to-peak function.
Key Path Peak Search
Remote Command :CALCulate:MARKer[1]|2|3|4|5|6|7|8|9|10|11|12:PTPeak
Example CALC:MARK:PTP
CALC:MARK:Y? queries the delta amplitude value for marker 1.
Notes Turns on the Marker Δ active function.
Notes Sending this command selects the subopcoded marker.
Dependencies Pk-Pk Search is grayed out when Coupled Markers is on.
Couplings The selected marker becomes a delta marker if not already in delta mode.
State Saved Not part of saved state.
Initial S/W Revision Prior to A.02.00