R&S FSH
Spectrum Analyzer Mode
Performing Spectrum Measurements
Operating Manual 1309.6275.12 - 14
69
The spectrogram result display is filled with results until you change a measurement
setting. As soon as a setting is changed, the spectrogram clears and starts to fill again.
You can also clear the spectrogram manually.
M
Press the MEAS key.
M
Press the "Clear" softkey.
2.1.8.2 Browsing Through the Signal History
There are two ways to view parts of the measurement result history that have moved
outside the visible area of the spectrogram.
M
Press the MEAS key.
M
Press the "Spectrogram Settings" softkey.
M
Select the "[ ] Spectrogram Full Screen" menu item.
The R&S FSH now uses the full diagram area of the screen for the spectrogram.
The number of lines in the spectrogram and therefore the displayed time period
more than doubles.
M
The "Spectrogram Full Screen" menu item is marked by an [X].
It may, however, be necessary that the spectrum result display is still visible to
evaluate measurement results. For this purpose, the spectrogram has an (invisible)
scrollbar that you can use to scroll up and down the spectrogram to the frame that
you'd like to see.
Scrolling through the spectrogram
Turn the rotary knob or use the UP and DOWN cursor keys whenever you are viewing
the spectrogram.
The R&S FSH scrolls through the spectrogram history.
Note that this is only possible as long as no input field or menu is active. To resume
the spectrogram scroll function in this case,
M
Press the CANCEL key
M
Use the rotary knob or the UP and DOWN cursor keys again.
The R&S FSH resumes scrolling through the spectrogram history.
The symbols on the right side of the spectrogram indicate the position of the
spectrogram part currently displayed on the screen:
C
A single down arrow in the right lower corner of the spectrogram indicates that the
uppermost frame still represents the most recently recorded trace.
C
Two arrows (one up, one down) indicate that the spectrogram area displayed is
somewhere in the middle of the available history.
C
A single up arrow in the upper right corner of the spectrogram indicates that the
lowest line of the spectrogram represents the end of the history buffer.
