3 VMA Mode
3.2 Custom OFDM Measurement
Preset ALL
State Saved Yes
Range CC0|CC1|CC2|CC3|CC4|CC5|CC6|CC7|ALL
Spur Avoidance
Because VXT models M9410A/11A are direct-conversion (zero-IF) receivers,
feedthrough leakage from the local oscillator appears as a spurious signal (spur) at
the center frequency. The Spur Avoidance function is provided to eliminate this spur,
at the expense of some measurement speed.
When Spur Avoidance is enabled (the default), the analyzer uses a software
algorithm to remove this spur from the displayed measurement data, but the
algorithm only operates under certain conditions.Specifically, it only operates when
the Component Carriers Bandwidth <= maxBW/2.5. See "More Information" on page
491.
You can disable this function to speed up your measurement by setting Spur
Avoidance to “Disabled.”
Note that when Spur Avoidance is not in effect, either because you have disabled it
or because the Component Carriers Bandwidth > maxBW/2.5, the following warning
message will appear in the status bar: “Settings Alert; Spur Avoidance Off”. This is to
alert you that measurement accuracy might be impacted by the fact that Spur
Avoidance is not in effect.
Remote Command
[:SENSe]:OFDM:SAVoid[:STATe] ON | OFF | 0 | 1
[:SENSe]:OFDM:SAVoid[:STATe]?
Example
:OFDM:SAVoid ON
:OFDM:SAVoid?
Dependencies Only appears in VXT models M9410A/11A
Preset ON
State Saved Saved in instrument state
Range ON|OFF
More Information
Option Frequency Range MaxBW
Option B40 380 MHz ~ 6000 MHz 40 MHz
491 Vector Modulation Analyzer Mode User's &Programmer's Reference
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