3 Short-Range Comms & IoT Mode
3.7 ACP Measurement
Res BW
Activates the resolution bandwidth active function, which allows you to manually set
the resolution bandwidth (RBW) of the instrument.
Normally, Res BW (Auto) selects automatic coupling of Res BW to "Span" on page
849. To decouple the resolution bandwidth, press the Auto/Man toggle on the Res
BW control, or simply enter a different value for Res BW.
When Res BW is manually selected, it may be returned to the coupled state by
pressing the Auto/Man toggle on the ResBW control. This may also be done by
pressing "Auto Couple" on page 1709 or by performing a Preset.
For more Mode-specific details, see: "More Information" on page 832
Remote Command
[:SENSe]:ACPower:BANDwidth[:RESolution] <bandwidth>
[:SENSe]:ACPower:BANDwidth[:RESolution]?
Example
:ACP:BAND 5 MHz
:ACP:BAND?
Notes For numeric entries, all Res BW Types choose the nearest (arithmetically, on a linear scale, rounding
up) available Res BW to the value entered
The setting and querying of values depend on the current bandwidth type
This parameter is preset by "Meas Method" on page 863. Preset values are:
Modes Values
5GNR, LTEAFDD/TDD, MSR, VMA, SRCOMM IBW 100 kHz
IBWR 30 kHz
SA IBW 220 kHz
IBWR 30 kHz
WCDMA IBW 100 kHz
IBWR 27 kHz
FAST 390 kHz
When Meas Method is FPOWer and Fast Power RBW mode is “Best Speed,” RBW is calculated as
follows:
RBW = Span × 2.442 × 10
-3
Dependencies Disabled when Meas Method is RBW, FAST, or FPOWer, and Fast Power RBW mode is Best Speed
If pressed, an advisory message is generated. If the equivalent SCPI command is sent, a "Setting
conflict" warning is generated
Couplings Sweep time is coupled to RBW. As RBW changes, the sweep time (if set to Auto) is changed to
maintain amplitude calibration
"Video BW" on page 833 is coupled to Res BW. As the resolution bandwidth changes, the video
bandwidth (if set to Auto) changes to maintain the ratio of VBW/RBW (10:1)
Short Range Comms & IoT Mode User's &Programmer's Reference 831
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