3 IQ Analyzer (Basic) Mode
3.1 Complex Spectrum Measurement
channel values are copied to the Q channel, so at the time Q Same as I is Off, the I
and Q channel setups will be identical.
Remote
Command
[:SENSe]:VOLTage|POWer:IQ:MIRRored OFF | ON | 0 | 1
[:SENSe]:VOLTage|POWer:IQ:MIRRored?
Example Turn off the mirroring of I Range to Q Range
:VOLT:IQ:MIRR OFF
:POW:IQ:MIRR OFF
Couplings When ON, the "I Range" on page 309 value is mirrored (copied) to the "Q Range" on page 311
Preset
ON
State Saved Saved in instrument state
Range
OFF|ON
3.1.3.5 Signal Path
Contains controls that pertain to the routing of the signal through the frontend of
the instrument.
In general, only appears in instruments whose hardware supports this signal routing.
For example, this tab does not appear in many of the modular instrument products,
including VXT Model M9420A, or UXM.
This tab does appear in VXT Models M9410A/11A/15A/16A and
M9410E/11E/15E/16E, because "Software Preselection" on page 330 is under this
tab, and VXT Models M9410A/11A/15A/16A and M9410E/11E/15E/16E implement
a version of Software Preselection.
Presel Center
Adjusts the centering of the preselector filter to optimize the amplitude accuracy at
the frequency of the selected marker. If the selected marker is not on when Presel
Center is pressed, the instrument turns on the selected marker, performs a peak
search, and then performs centering on the marker’s center frequency. If the
selected marker is already on and between the start and stop frequencies of the
instrument, the instrument performs the preselector calibration on that marker’s
frequency. If the selected marker is already on, but outside the frequency range
between Start Freq and Stop Freq, the instrument first performs a peak search, and
then performs centering on the marker’s center frequency.
The value displayed on "Preselector Adjust" on page 317 changes to reflect the new
preselector tuning.
Certain considerations should be observed to ensure proper operation, as detailed
in "Proper Preselector Operation" on page 168.
167 IQ Analyzer Mode User's &Programmer's Reference
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