Operating instructions

R&S ESCI SENSe:POWer Subsystem
1166.6004.12 6.185 E-1
[SENSe<1|2>:]POWer:ACHannel:PRESet ACPower | CPOWer | MCACpower | OBANdwidth |
OBWidth | CN | CN0
This command adjusts the frequency span, the measurement bandwidths and the detector as
required for the number of channels, the channel bandwidths and the channel spacings selected in
the active power measurement. If necessary, adjacent-channel power measurement is switched on
prior to the adjustment.
To obtain valid results, a complete sweep with synchronization to the end of the sweep must be
performed after the adjustment. Synchronization is possible only in the single-sweep mode.
The result is queried with the command CALCulate:MARKer:FUNCtion:POWer:RESult?.
The command is available only for measurements in the frequency domain (span > 0).
Example: "POW:ACH:PRES ACP" 'Sets the frequency span, the measurement
bandwidths and the detector as required for the
ACP measurement in screen A.
"INIT:CONT OFF" 'Switches over to single-sweep mode.
"INIT;*WAI" 'Starts a sweep and waits for the end of the
sweep.
"CALC:MARK:FUNC:POW:RES? ACP" 'Queries the result of the adjacent-channel
power measurement.
Characteristics: *RST value: -
SCPI: device-specific
Mode:A-F
[SENSe<1|2>:]POWer:ACHannel:PRESet:RLEVel
This command adapts the reference level to the measured channel power and – if required -
switches on previously the adjacent channel power measurement. This ensures that the signal path
of the instrument is not overloaded. Since the measurement bandwidth is significantly smaller than
the signal bandwidth in channel power measurements, the signal path can be overloaded although
the trace is still significantly below the reference level. If the measured channel power equals the
reference level, the signal path is not overloaded.
The command is only available in the frequency domain (span > 0).
Note: Subsequent commands have to be synchronized with *WAI, *OPC or *OPC? to the end of
the autorange process which would otherwise be aborted.
Example: "POW:ACH:PRES:RLEV;*WAI" 'Adapts the reference level to the measured
'channel power.
Characteristics: *RST value: -
SCPI: device-specific
Mode: A-F
[SENSe<1|2>:]POWer:BANDwidth|BWIDth 10 to 99.9PCT
This command defines the percentage of the power with respect to the total power. This value is the
basis for the occupied bandwidth measurement (command: POWer:ACHannel:PRESet OBW).
The command is only available in the frequency domain (span > 0).
Example: "POW:BWID 95PCT"
Characteristics: *RST value: 99PCT
SCPI: device-specific
Mode: A-F