3 VMA Mode
3.1 Digital Demod Measurement
In all the above cases:
–
The RBW to be used in the calculations is the equivalent –3 dB bandwidth of the
current RBW filter
–
The rules apply whether in swept spans, zero span, or FFT spans
Ranges
Option Option # Phase Noise Option Range
No EPx Option 1 Best Close-in [offset < 20 kHz]
2 Best Wide-offset [offset > 30 kHz]
3 Fast Tuning [same as Best Close-In]
EP0 4 Best Close-in [offset < 600 kHz]
1 Balanced [offset < 600 kHz]
5 Best Spurs [offset < 600 kHz]
2 Best Wide-offset [offset > 800 kHz]
3 Fast Tuning [same as Best Close-In]
EP1 1 Best Close-in [offset < 140 kHz]
2 Best Wide-offset [offset > 160 kHz]
3 Fast Tuning [single loop]
EP2, EP3, EP5 1 Best Close-in [offset < 70 kHz]
2 Best Wide-offset [offset > 100 kHz]
3 Fast Tuning [medium loop bw]
EP4 1 Best Close-in [offset < 90 kHz]
2 Best Wide-offset [offset > 130 kHz]
3 Fast Tuning [same as Best Close-In]
Mixing Mode
Changing LO mixing from high-side to low-side or vice versa.
Remote Command
[:SENSe]:DDEMod:LO:MIXMode NORMal | ALTernate
[:SENSe]:DDEMod:LO:MIXMode?
Example
:DDEM:LO:MIXM NORM
:DDEM:LO:MIXM?
Dependencies The Mixing Mode, the control is grayed out when the RF Input is set to something other than “RF”
(such as External Mixer). If you press the grayed out control, a warning message “Feature only
available with Signal Input RF” is shown
If you try to set Mixing Mode via SCPI when disabled, a message -221,”Settings conflict; Feature only
Vector Modulation Analyzer Mode User's &Programmer's Reference 370
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