3 Short-Range Comms & IoT Mode
3.7 ACP Measurement
When Res BW is set to Auto, the resolution bandwidth is auto-coupled to the span. The ratio of
Span/RBW is approximately 106:1 when auto coupled. When Res BW is set to Man, and the
bandwidths are entered manually, these bandwidths are used regardless of other instrument settings
Preset Auto, unless noted in "RBW Presets" on page 832
State Saved Saved in instrument state
Min 1 Hz
Max 8 MHz is the max equivalent –3 dB RBW, which means that the named RBW (the one shown on the
control etc.) can actually exceed 8 MHz if using a filter other than –3 dB Gaussian
Annotation A “#” mark appears before “RBW” in the annotation when it is switched from Auto to Manual coupling
Backwards
Compatibility
Notes
For backwards compatibility, this command accepts both the BANDwidth and BWIDth forms
For ESA, the maximum Res BW was 5 MHz; for X-Series it is 8 MHz
The following command is supported
[:SENSe]:ACP:SWEep:BANDwidth|BWIDth[:RESolution]
Auto Function
Remote
Command
[:SENSe]:ACPower:BANDwidth[:RESolution]:AUTO ON | OFF | 1 | 0
[:SENSe]:ACPower:BANDwidth[:RESolution]:AUTO?
Example
:ACP:BAND:AUTO ON
:ACP:BAND:AUTO?
Preset See "RBW Presets" on page 832
RBW Presets
Unless noted in the table below, the Preset value of Res BW is Auto.
Mode Preset Value
WCDMA 100 kHz
MSR 100 kHz
SA 220 kHz
5GNR 100 kHz
More Information
When Res BW is set to Auto, the bandwidth selected depends on "RBW Filter Type"
on page 834.
Only certain discrete resolution bandwidths are available. The available bandwidths
are dependent on the RBW Filter Type or the EMC Standard. If an unavailable
bandwidth is entered with the numeric keypad, the closest available bandwidth is
selected.
In some PowerSuite measurements, in the LTE-Advanced (both FDD and TDD)
Modes, when Res BW is Auto, the resolution bandwidth is predefined based on the
832 Short Range Comms & IoT Mode User's &Programmer's Reference
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