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9.6. SELECTION OF ZOOM BANDWIDTH AND CENTRE FREQUENCY
Fig.9. 1.
Highlighting of selected zoom band against previous results
When selecting a new zoom frequency span and centre frequency, the position of the
span can be highlighted against previously obtained results by first selecting RECORD
"Stop". An example of the resulting display is shown in Fig.9.1. The same also applies
to selection of a new baseband frequency span.
9.7. USE OF CURSORS
114
Fig.9.2.
Simultaneous display of the Delta Cursor on the Magnitude
and Nyquist plot of a Frequency Response Function
Use of the cursors is straightforward. However, points of interest are:
1.
Always remember to press the "Cursor" pushkey prior to attempting to move the
main cursor.
2.
When using the Mask or Delta Cursor on a Nyquist or Nichols plot of a function, it
is often usefui to simultaneously display the magnitude of the function with the
Delta Cursor selected and the cursors aligned between the two traces, as shown in
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