3 Short-Range Comms & IoT Mode
3.9 Occupied BW Measurement
Power Integration Method
Selects the power integration method:
Normal
NORMal
By integrating the linear power bucket values from the lower edge of
the trace, and interpolating to find the point where the integrated
power equals (1 – [Occ BW % Pwr]) / 2 (0.5% if, for example, the
99% occupied bandwidth is to be found) of the total power,
frequency f1 is obtained. This procedure is repeated from the upper
trace edge to find frequency f2. This calculation uses linear
interpolation to find the lower and upper carrier boundary point
within the width of a sweep point (the span divided by the number of
sweep points), f1 and f2
From
Center
ICENter
Measures the power spectrum distribution within two times or more
frequency range over the requirement for Occupied Bandwidth
specification centering on the current carrier frequency
Remote Command
[:SENSe]:OBWidth:INTegration[:METHod] NORMal | ICENter
[:SENSe]:OBWidth:INTegration[:METHod]?
Example
:OBW:INT NORM
:OBW:INT?
Preset
For 5GNR Mode, Uplink:
ICENter
All other Modes
NORMal
State Saved Yes
Range
NORMal|ICENter
Spur Avoidance
Because VXT models M9410A/11A/15A/16A and M9410E/11E/15E/16E 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 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 in the
multiple capture case.
You can disable this function to speed up your measurement by setting Spur
Avoidance to “Disabled.”
1296 Short Range Comms & IoT Mode User's &Programmer's Reference
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