Keysight N9020B - 3.8 ACP Measurement

3 VMA Mode
3.8 ACP Measurement
3.8 ACP Measurement
ACP is a measurement of the amount of interference, or power, in an adjacent
frequency channel. The results are displayed as a bar graph or as spectrum data,
with measurement data at specified offsets.
Measurement Commands
The general functionality of "CONFigure" on page 2551, "INITiate" on page 2552,
"FETCh" on page 2552, "MEASure" on page 2554, and "READ" on page 2553 are
described in the section SCPI Operation and Results Query in the topic
Programming the Instrument.
The following measurement commands and queries are used to configure the
measurement:
:INITiate:ACPower
Initiates a trigger cycle for the ACPower measurement,
but does not return any data. You must then use
:FETC:ACP[n]? to retrieve data
Does not change any measurement settings
:CONFigure?
Returns the long form name of current measurement, in
this case, ACPower
:CONFigure:ACPower
Selects ACP measurement with Meas Setup settings in
preset state – same as "Meas Preset" on page 1288
:CONFigure:ACPower:NDEFault
Selects ACP measurement without affecting settings
The following queries are used to retrieve the results:
:FETCh:ACPower?
Retrieves the data specified by n
:MEASure:ACPower
[n]?
Switches to ACP measurement, restores default values, starts the
measurement, then retrieves the data specified by n
:READ:ACPower[n]?
Starts the measurement, then retrieves the data specified by n
Remote Command Results
The following table describes the results returned by the :FETCh, :MEASure, and
:READ queries listed above, according to the index value n.
n Results Returned
1, or not
specified
Dependent on Mode, "Meas Method" on page 1246, "Power Ref" on page 1331 , and "Measurement Type"
on page 1330
See "Measurement Results for n = 1, or no Index Specified" on page 1158
2 Dependent on "Measurement Type" on page 1330. See "Measurement Results for n = 2" on page 1161
3 Dependent on Mode and "Measurement Type" on page 1330. See "Measurement Results for n = 3" on page
1155 Vector Modulation Analyzer Mode User's &Programmer's Reference