Markers - HP 8712ET User Manual Supplement

Displaying Measurement Results

Markers

Markers
Well-designed use of the analyzer's marker features in an automated
system can enhance the data gathering process, as well as provide
important visual feedback to the operator.
The active marker's value is displayed in the upper right area of the
graticule. If marker bandwidth (or notch) search is selected, the
bandwidth (or notch) information is displayed instead. This marker
information can be used to view exact measured data at critical
frequency points. Note the customized measurement channel notation in
Figure 7-1. In addition to the active marker's readout, four of the
marker's values are displayed in the softkey area during front panel use.
This makes it easy to quickly read the measured data at several marker
positions.
The triangular marker symbols can also be used to graphically indicate
critical frequency points of the measurement. For example, a marker can
be set at the desired center frequency for a notch filter, and the operator
can tune the filter until the notch is at the same frequency as the marker.
Marker search types include:
• max search
• min search
• target search
• bandwidth
• notch
• multi peak
• multi notch
When marker tracking is turned on, these searches will be automatically
performed at the end of each sweep. This can be useful in tuning
applications.
7-10 Automating Measurements