Measurements
R&S
®
FSW
156
User Manual 1173.9411.02 ─ 19
Channel Bandwidths
The Tx channel bandwidth is normally defined by the transmission standard. The cor-
rect bandwidth is set automatically for the selected standard. The bandwidth for each
channel is indicated by a colored bar in the display.
For measurements that require channel bandwidths which deviate from those defined
in the selected standard, use the IBW method ("Fast ACLR Off"). With the IBW
method, the channel bandwidth borders are right and left of the channel center fre-
quency. Thus, you can visually check whether the entire power of the signal under test
is within the selected channel bandwidth.
The value entered for any Tx channel is automatically also defined for all subsequent
Tx channels. Thus, only one value needs to be entered if all Tx channels have the
same bandwidth.
The value entered for any ADJ or ALT channel is automatically also defined for all
alternate (ALT) channels. Thus, only one value needs to be entered if all adjacent
channels have the same bandwidth.
Remote command:
Channel Spacings
Channel spacings are normally defined by the selected standard but can be changed.
If the spacings are not equal, the channel distribution in relation to the center frequency
is as follows:
Channel Power and Adjacent-Channel Power (ACLR) Measurement
