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CHP Channel Power
CHP
Channel Power
Performs the channel power measurement.
Syntax
CHP
XCHP
Equivalent
Softkey:
ClUNNEL
PCIVER
.
Related Commands: ACPPAR, ACPCONTM, ACPSNGLM, ACPSP, ACPBW, CHPGR, ACPMK.
Example
OUTPUT
718*"CHP*"
,
,
Flyforms the channel power
rneasur~t.
Description
CHP measures the total power in the specified channel bandwidth (ACPBW). The power
spectral density per Hz is also computed and displayed. This value is the average-power
spectral density in the specified channel bandwidth.
‘lb use CHP:
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 screen graticule.
3. Select the channel bandwidth with the ACPBW command.
4. Select the channel spacing with the ACPSP command. (For the channel power
measurement, ACPSP is only used to set the center frequency step size.)
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 CHP command.
8. Query ACPERR to determine if there is a setup error for the CHP measurement. See the
following table for more information about ACPERR.
9. If no error occurred, query the CHPWR variable for the numeric results of the CHP
measurement. See the following table for more information about CHPWR.
10. If no error occurred, query trace A (TRA) for the trace results of the CHP measurement.
Measurement Results: The results of the CHP command are stored in the variable and trace
described in the following table.
Programming Commands 5-95