3 Spectrum Analyzer Mode
3.6 Power Stat CCDF Measurement
Center Frequency
Sets the frequency that corresponds to the horizontal center of the graticule. While
adjusting Center Frequency, Span is held constant.
The Center Frequency setting is the same for all measurements within a mode, that
is, it is Meas Global. Some Modes are also able to share a Mode Global center
frequency value. If this is the case, the Mode will have a Global tab in its Meas Setup
menu.
Center Frequency sets (and queries) the center frequency for the currently selected
input. If your instrument has multiple inputs, and you select another input, Center
Frequency changes to the value for that input. SCPI commands are available to
directly set the center frequency for a specific input.
Center Frequency is remembered as you go from input to input. Thus, you can set a
Center Frequency of 10GHz with the RF Input selected, change to BBIQ and set a
Center Frequency of 20MHz, then switch to External Mixing and set a Center Freq
of 60GHz, and when you go back to the RF Input, Center Frequency will go back to
10GHz; back to BBIQ and it is 20MHz; back to External Mixing and it is 60GHz.
See:
–
"Center Frequency Presets" on page 1194
–
"VXT Models with Radio Heads/CIU Frequency Range" on page 1196
–
"RF Center Freq" on page 1196
–
"Ext Mix Center Freq" on page 1197
–
"I/Q Center Freq" on page 1198
Remote
Command
[:SENSe]:FREQuency:CENTer <freq>
[:SENSe]:FREQuency:CENTer?
Example Set Center Frequency to 50 MHz:
:FREQ:CENT 50 MHz
Increment Center Frequency by the value of CF Step:
:FREQ:CENT UP
Return the current value of Center Frequency:
:FREQ:CENT?
Notes Sets the RF, External Mixing or I/Q Center Frequency depending on the selected input:
–
For RF input it is equivalent to :FREQ:RF:CENT
–
For I/Q input it is equivalent to :FREQ:IQ:CENT
Spectrum Analyzer Mode User's &Programmer's Reference 1193
To Next Page
Loading...
Need help?
General
