Freq Channel; Center Frequency - Agilent Technologies X Series Manual

FREQ Channel

Opens a menu that enables you to control the Center Frequency of the instrument
Key Path
Instrument S/W Revision

Center Frequency

Sets the frequency that corresponds to the horizontal center of the graticule (for the normal setup where
Frequency Scale Type is set to linear). While adjusting the Center Frequency the Span is held constant,
this means that both Start Frequency and Stop Frequency will change.
Center Freq also sets the frequency entry mode to Center/Span. In Center/Span mode, the center
frequency and span values are displayed below the graticule, and the default active function in the
Frequency menu is Center Freq
The
Center Frequency
able to share a global Center Frequency
key in its menu.
Mode Setup
If your analyzer has multiple inputs, the Center Freq function sets (and queries) the Center Frequency for
the currently selected input. If you select another input, the Center Freq changes to the value for that
input. SCPI commands are available to directly set the Center Freq for a specific input.
See "RF Center Freq" on page 391
See "I/Q Center Freq" on page 391
See "Center Frequency Presets" on page 390
Remote Command
Default Unit
Dependencies/Couplings
Example
Chapter
Front-panel key
Prior to A.02.00
.
setting is the same for all measurements within a
value; if this is the case, the
[:SENSe]:FREQuency:CENTer <freq>
[:SENSe]:FREQuency:CENTer?
Hz
When operating in "swept span", any value of the Center Frequency or Span
that is within the frequency range of the analyzer is allowed when the value is
being set through the front panel numeric key pad or the SCPI command. The
other parameter is forced to a different value if needed, to keep the Start and
the Stop Frequencies within the analyzer's frequency range
The Center Frequency can be limited by Start or Stop Freq limits, if the Span
is so large that Start or Stop hit their limit.
FREQ:CENT 50 MHz
FREQ:CENT UP changes the center frequency to 150 MHz if you use
FREQ:CENT:STEP 100 MHz to set the center frequency step size to 100
MHz
FREQ:CENT?
FREQ Channel
. Some modes are also
Mode
Mode will have a Global Settings
389