Aeroflex 9102 - Calibration

Chapter 7 Transmission Operation
Changing the frequency settings
120 9102 Handheld Spectrum Analyzer Software version 5.31
4 Conclude the entry by pushing an enter key for the unit (GHZ/DBM
for gigahertz, MH
Z/DB/ΜS for megahertz).
If the start frequency entered is lower than the stop frequency, the
horizontal axis will display the range from the new start to the stop
frequency.
If the new start frequency is higher than or equal to the stop
frequency, the start frequency is used as the center frequency with
zero span, i.e. the signal at the selected frequency will be shown in
the time domain.
5 Push the
Stop softkey and enter the frequency for the right end of
the display.
You can also place softkeys for the start and stop frequencies available
on the main menu by changing the frequency mode, see “Changing the
main menu for different frequency parameters”.
Setting center frequency
and span
1 Push the CENT function key (or the Freq softkey in the Transmission
main menu).
The vertical softkeys include Center and Span. An entry field
appears, indicating the center frequency currently set and the step
size for the up/down cursor keys.
2 Enter a new frequency using the numeric keys, the cursor keys and
the B
ACKSPACE key.
3 Conclude the entry by pushing an enter key for the unit (GH
Z/DBM
for gigahertz, MH
Z/DB/ΜS for megahertz, KHZ/DBΜV/MS for kilo-
hertz, or E
NTER for hertz).
4 Push the
Span softkey and enter the frequency for the range from
the left to the right end of the display.
You can also place softkeys for the center frequency and the span
available on the main menu by changing the frequency mode, see
section “Changing the main menu for different frequency parameters”
below.
Changing the main
menu for different
frequency parameters
The Transmission 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 Transmission 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.