Rohde & Schwarz FSW13, Руководство пользователя

Страница: 172 / 1150

Measurements
R&S
®
FSW
172 User Manual 1173.9411.02 ─ 19
Limit Checking ← Gap (CACLR) Channel Definition
During an ACLR measurement, the power values can be checked whether they
exceed user-defined or standard-defined limits. A relative or absolute limit can be
defined, or both, for each individual gap channel. Both limit types are considered,
regardless whether the measured levels are absolute or relative values. The check of
both limit values can be activated independently. If any active limit value is exceeded,
the measured value is displayed in red and marked by a preceding asterisk in the
result table.
Note that in addition to activating limit checking for individual channels, limit checking
must also be activated globally for the MSR ACLR measurement (see
"Limit Checking"
on page 168).
Remote command:
CALCulate:
​
LIMit:
​
ACPower[:
​
STATe]
​
on page 711
CALCulate:
​
LIMit:
​
ACPower:
​
GAP<gap>:
​
ABSolute:
​
STATe
​
on page 714
CALCulate:
​
LIMit:
​
ACPower:
​
GAP<gap>:
​
ABSolute
​
on page 713
CALCulate:
​
LIMit:
​
ACPower:
​
GAP<gap>[:
​
RELative:
​
]STATe
​
on page 715
CALCulate:
​
LIMit:
​
ACPower:
​
GAP<gap>[:
​
RELative]
​
on page 714
CALCulate:
​
LIMit:
​
ACPower:
​
GAP<gap>:
​
RESult?
​
on page 715
5.3.6 How to Perform Channel Power Measurements
The following step-by-step instructions demonstrate the most common tasks when per-
forming channel power measurements.
● How to Perform a Standard Channel Power Measurement ..................................172
● How to Set up the Channels ................................................................................. 173
● How to Configure an MSR ACLR Measurement ...................................................174
● How to Manage User-Defined Configurations .......................................................175
● How to Compare the Tx Channel Power in Successive Measurements ...............176
5.3.6.1 How to Perform a Standard Channel Power Measurement
Performing a channel power or ACLR measurement according to common standards is
a very easy and straightforward task with the R&S
FSW.
1. Press the MEAS key or select "Select Measurement" in the "Overview".
2. Select "Channel Power ACLR".
The measurement is started immediately with the default settings.
3. Select the "CP / ACLR Standard" softkey and select a standard from the list.
The measurement is restarted with the predefined settings for the selected stand-
ard.
4. If necessary, edit the settings for your specific measurement as described in chap-
ter 5.3.6.2, "How to Set up the Channels" , on page 173, or load a user-defined
configuration (see "To load a user-defined configuration" on page 176).
Channel Power and Adjacent-Channel Power (ACLR) Measurement