R&S FSH
Spectrum Analyzer Mode
Performing Spectrum Measurements
Operating Manual 1309.6275.12 - 14
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2.1.4.5 Selecting the Reference Channel
When determining relative power values for the adjacent channels, you can set a
specific transmission channel as the reference channel.
M
Press the MEAS key.
M
Press the "Channel Settings" softkey.
M
Select the "ACLR Ref Setting" menu item.
The R&S FSH opens a another submenu to select the reference channel.
M
Select the method of determining the reference channel.
The following methods are available:
-
Tx Channel
Select a specific transmission channel by entering its number as the reference.
-
Min Power Tx Channel
The channel with the lowest power level is the reference channel.
-
Max Power Tx Channel
The channel with the highest power level is the reference channel.
-
Lowest Highest Channel
The outer left-hand transmission channel is the reference channel for the lower
adjacent channels. The outer right-hand transmission channel is the reference
channel for the upper adjacent channels.
2.1.4.6 Setting and Checking the Limits
Limit checks in ACLR measurement mode are independent of limit line handling. You
can define a limit for each of the adjacent channels. Limits for adjacent channels can
be set either in absolute or relative terms.
Defining relative limits
M
Press the MEAS key.
M
Press the "Channel Settings"
softkey.
M
Select the "Channel Limit Relative"
menu item.
The R&S FSH opens a dialog box
to define the relative limits for each
adjacent channel.
M
Select the channel you want to
define a limit for.
