3 VMA Mode
3.1 Digital Demod Measurement
When Spur Avoidance is enabled (the default), the instrument 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 Info BW <= maxBW/2.5. See "More Information" on page 302.
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 Info BW > 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]:DDEMod:SAVoid[:STATe] ON | OFF | 0 | 1
[:SENSe]:DDEMod:SAVoid[:STATe]?
Example
:DDEMod:SAVoid ON
:DDEMod: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
Option B3X 380 MHz ~ 550 MHz 100 MHz
550 MHz ~ 1310 MHz 200 MHz
1310 MHz ~ 5930 MHz 300 MHz
5930 MHz ~ 6000 MHz (6080 MHz- center frequency) * 2
Option B6X 380 MHz ~ 550 MHz 100 MHz
550 MHz ~ 1310 MHz 200 MHz
1310 MHz ~ 5780 MHz 600 MHz
5780 MHz ~ 6000 MHz (6080 MHz- center frequency) * 2
Option B12 380 MHz ~ 550 MHz 100 MHz
550 MHz ~ 1310 MHz 200 MHz
1310 MHz ~ 2000 MHz 600 MHz
2000 MHz ~ 5480 MHz 1200 MHz
5480 MHz ~ 6000 MHz (6080 MHz- center frequency) * 2
Vector Modulation Analyzer Mode User's &Programmer's Reference 302
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