Aeroflex 9102 - Changing the Main Menu for Different Frequency Parameters; Performing Measurements in the Time Domain; Selecting the Step Size for the Frequency Input; Viewing the Complete Frequency Band

Chapter 3 Spectrum Analysis Operation
Changing the frequency settings
58 9102 Handheld Spectrum Analyzer Software version 5.31
Changing the main
menu for different
frequency parameters
The main menu shows two softkeys for the definition of the frequency
range on the display. Different methods exist to define the range as
depicted above; you can configure these softkeys to one of the two
allowable combinations as follows:
1 From the main menu, select
Freq > Freq Mode.
2 Select the combination of softkeys that you want to see in the main
menu (
Start/Stop or Center/Span).
3 Return to the main menu by pushing the
Main ... softkey.
The main menu appears and displays the selected combination of
keys.
Note that the description of the horizontal frequency axis changes with
the selected parameter set.
Viewing the complete
frequency band
To change the frequency range to the full bandwidth supported by the
9102, proceed as follows:
1 From the main menu, push the
Freq softkey.
The Frequency menu is displayed.
2 Push the
Full Span softkey.
The leftmost frequency changes to 0 Hz and the rightmost
frequency to 4 GHz, or to 7.5 GHz if the Frequency Extension
7.5 GHz option is installed.
Performing
measurements in the
time domain
Measurements on a selected center frequency can also be displayed
in the time domain.
1 From the main menu, push the
Freq softkey.
The Frequency menu is displayed.
2 Push the
Center softkey and enter the desired center frequency;
close the input field by selecting the appropriate unit with one of
the enter keys.
3 Push the
Zero Span softkey.
The horizontal axis becomes the time axis. The scale width is iden-
tical to the sweep time. See Figure 17 on page 65 for an example.
Selecting the step size
for the frequency input
The center, start and stop frequencies can be set by either entering a
new value with the numeric keys, or by using the arrow keys (U
P,
D
OWN) to increase or decrease the current setting. The step size for an
arrow keypress can be either automatically selected by the 9102, or
manually adjusted.
Manually setting the frequency step size
1 From the main menu, select
Freq.