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Chapter 5 259
Language Reference
MEASure Group of Commands
Adjacent Channel Power Ratio (ACP) Measurement
This measures the total rms power in the specified channel and in 5
offset channels. You must be in Basic, cdmaOne, cdma2000, W-CDMA
(3GPP), W-CDMA (Trial & Arib), iDEN, NADC or PDC mode to use
these commands. Use INSTrument:SELect to set the mode.
The general functionality of CONFigure, FETCh, MEASure, and READ
are described at the beginning of this section. See the SENSe:ACP
commands for more measurement related commands.
:CONFigure:ACP
:FETCh:ACP[n]?
:READ:ACP[n]?
:MEASure:ACP[n]?
For Basic mode, a channel frequency and power level can be defined in
the command statement to override the default standard setting. A
comma must precede the power value as a place holder for the
frequency when no frequency is sent.
History: Added to Basic mode, version A.03.00 or later
Front Panel
Access:
Measure, ACP or ACPR
After the measurement is selected, press Restore Meas
Defaults
to restore factory defaults.
Measurement Results Available
Measurement
Type
n Results Returned
0 Returns unprocessed I/Q trace data, as a series of
comma-separated trace points, in volts. The I values are listed
first in each pair, using the 0 through even-indexed values. The
Q values are the odd-indexed values.
not
specified
or n=1
NADC and
PDC mode
Returns 22 comma-separated scalar results, in the following
order:
1. Center frequency – absolute power (dBm)
2. Center frequency – absolute power (W)
3. Negative offset frequency (1) – relative power (dB)
4. Negative offset frequency (1) – absolute power (dBm)
5. Positive offset frequency (1) – relative power (dB)
6. Positive offset frequency (1) – absolute power (dBm)
...
1. Positive offset frequency (5) – relative power (dB)
2. Positive offset frequency (5) – absolute power (dBm)