Spectrum Measurements
R&S
®
ESR
234
User Manual 1175.7068.02 ─ 12
Configuring a Limit Check
During an ACLR measurement, the power values can be checked whether they
exceed user-defined limits. A relative or absolute limit can be defined, or both. Both
limit types are considered, regardless whether the measured levels are absolute or rel-
ative 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.
To configure a limit check
1. In the "Channel Setup" dialog box, select the "Limits" tab to define a limit check.
2. For each channel, define a relative or absolute value that should not be exceeded.
3. Select the channels to be included in the limit check by activating the "Check"
option.
4. Activate limit checking for the selected channels by setting "Limit Checking" to
On
.
Performing a Channel Power Measurement
A channel power measurement is started automatically according to the currently
selected standard when you press the "Ch Power ACLR" softkey in the [MEAS] menu.
► To start a new measurement after changing the settings, press the [RUN Single] or
[RUN CONT] hardkeys.
Alternatively, you can save your settings as a user standard (see
on page 234), then select that standard and start the measure-
ment as usual by pressing the "Ch Power ACLR" softkey.
The configured measurement is performed (depending on the number of defined chan-
nels, see
on page 237) and the results are displayed in the graphic
and the result table.
User-Defined Configurations
You can define measurement configurations independently of a predefinded standard
and save the current ACLR configuration as a "user standard" in an xml file. You can
then load the file and thus the settings again at a later time.
User-defined standards are not supported for "Fast ACLR" and Multi-Carrier ACLR
measurements.
Measurements
