Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.5 ACP Measurement
Option Parameters Description
Auto See "Detector
Select
Auto/Man" on
page 1127
Detector selected depends on marker functions, trace functions, average type, and
the trace averaging function
When in AUTO, the detector selected is set to AVERage, unless the Radio Standard
defaults state otherwise, for example, it is set to POS for Radio Standard = PDC when
Device = both MS and BTS, and when Radio Standard = NADC and Device = MS
Normal
NORMal
Detector determines the peak of the CW-like signals, and yields alternating
maximums and minimums of noise-like signals. This is also referred to as Rosenfell
detection
Average
AVERage
RMS
Detector determines the average of the signal within the sweep points, using RMS
averaging
Peak
(Positive)
POSitive
Detector determines the maximum of the signal within the sweep points
Sample
SAMPle
Detector indicates the instantaneous level of the signal at the center of the sweep
points represented by each display point
Negative
Peak
NEGative
Detector determines the minimum of the signal within the sweep points
Because they may not find a spectral component's true peak, neither Average nor
Sample detectors measure amplitudes of CW signals as accurately as Peak or
Normal, but they do measure noise without the biases of peak detection.
When Meas Method is Fast Power, Auto, Peak and Average are selectable.
Remote
Command
[:SENSe]:ACPower:DETector[:FUNCtion] NORMal | AVERage | POSitive | SAMPle |
NEGative | RMS
[:SENSe]:ACPower:DETector[:FUNCtion]?
Example
:ACP:DET NORM
:ACP:DET?
:ACP:DET RMS
Sets the detector to AVERage. In ACP, AVERage uses RMS averaging, so this is equivalent to
selecting an RMS detector
Notes The query returns a name that corresponds to the detector type, as shown below
The RMS selection sets the detector type to AVERage with RMS averaging. Therefore, if RMS has been
selected, the query returns AVER
String Returned Definition
NORM
Normal
AVER
Average (RMS)
POS
Peak
SAMP
Sample
NEG
Negative Peak
1126 Spectrum Analyzer Mode User's &Programmer's Reference

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)