Measurements
R&S
®
FSW
169User Manual 1173.9411.02 ─ 19
The results of the power limit checks are also indicated in the STAT:QUES:ACPL sta-
tus registry (see "STATus:QUEStionable:ACPLimit Register" on page 636).
Remote command:
CALCulate:LIMit:ACPower[:STATe] on page 711
Adjacent Channel Definition
Defines the channels adjacent to the transmission channel block in MSR signals. A
maximum of 12 adjacent channels can be defined.
For MSR signals, adjacent channels are defined in relation to the center frequency of
the first and last transmission channel in the entire block, i.e.:
The lower adjacent channels are defined in relation to the CF of the first Tx channel in
the first sub block.
The upper adjacent channels are defined in relation to the CF of the last Tx channel in
the last sub block.
Adjacent channels are named "Adj" and "Alt1" to "Alt11"; the names cannot be
changed manually.
In all other respects, channel definition is identical to common ACLR measurements.
Adjacent Channel Spacings ← Adjacent Channel Definition
Channel spacings are normally predefined by the selected technology but can be
changed.
For MSR signals, adjacent channels are defined in relation to the center frequency of
the first and last transmission channel in the entire block, i.e.:
The spacing of the lower adjacent channels refers to the CF of the first Tx channel in
the first sub block.
The spacing of the upper adjacent channels refers to the CF of the last Tx channel in
the last sub block.
If you change the adjacent-channel spacing (ADJ), all higher adjacent channel spac-
ings (ALT1, ALT2, …) are multiplied by the same factor (new spacing value/old spac-
ing value). Again, only one value needs to be entered for equal channel spacing. For
different spacing, configure the spacings from top to bottom.
For details see chapter 5.3.6.3, "How to Configure an MSR ACLR Measurement",
on page 174
Remote command:
[SENSe:]POWer:ACHannel:SPACing[:ACHannel] on page 703
[SENSe:]POWer:ACHannel:SPACing:ALTernate<ch> on page 704
Adjacent Channel Bandwidths ← Adjacent Channel Definition
The adjacent channel bandwidth is normally predefined by the transmission technology
standard. The correct bandwidth is set automatically for the selected technology. The
bandwidth for each channel is indicated by a colored bar in the display.
Channel Power and Adjacent-Channel Power (ACLR) Measurement
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