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ACP Adjacent Channel Power
ACP
Adjacent Channel Power
Performs the adjacent channel power measurement.
Syntax
ACP
XACP
Equivalent
Softkey:
AD3
CfiAN
POWER.
Related Commands: ACPPAR, ACPSP, ACPBW, ACPSNGLM, ACPCONTM, ACPGRAPH,
ACPGR, ACPMK.
Example
OUTPUT
718;"ACP;"
F&forms the adjacent channel power
masurewsnt.
Description
ACP measures the power of the carrier and the power of the channels that are adjacent to the
carrier, and then computes a power ratio for each of the adjacent channels, using the carrier
power as a reference. ACP performs the adjacent channel power measurement using the values
for channel spacing (ACPSP) and channel bandwidth (ACPBW).
To use ACP:
1. Set the center frequency to the carrier’s frequency.
2. For best accuracy, set the reference level so that the carrier signal peak is within the first
(top) division of the display graticule.
3. Select the channel spacing with the ACPSP command.
4. Select the channel bandwidth with the ACPBW command.
5. If you want the spectrum analyzer settings to be set automatically, ensure that ACPPAR is
set to 1. If you want to set the spectrum analyzer settings manually, set ACPPAR to 0. (See
“ACPPAR” for more information about selecting the spectrum analyzer settings manually.)
6. If the spectrum analyzer is in the continuous-sweep mode, use the single sweep command
(SNGLS) to select the single-sweep mode.
7. Execute the ACP command.
8. Query ACPERR to determine if there is a setup error for the ACP measurement. See the
following table for more information about ACPERR.
9. If no error occurred, query ACPPWRTX, ACPMAX, ACPLOWER, and ACPUPPER variables
for the numeric results of the ACP measurement. See the following table for more
information about these variables.
10. If no error occurred, query trace A (TRA) for the trace results of the ACP measurement.
Measurement Results: The results of the ACP command are stored in the variables and trace
in the following table.
Programming Commands
5-33