R&S FSW Series, Руководство пользователя

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Measurements and Results
R&S
®
FSW
164 User Manual 1173.9411.02 ─ 43
Figure 7-26: Sub block definition
As opposed to common ACLR channel definitions, the Tx channels are defined at
absolute frequencies, rather than by a spacing relative to the (common) center fre-
quency. Each transmit channel can be assigned a different technology, used to prede-
fine the required bandwidth.
Gap channels and CACLR
If two or more sub blocks are defined, the power in the gaps between the sub blocks
must also be measured. Gap channels are defined using bandwidths and spacings,
relative to the outer edges of the surrounding sub blocks.
If the upper and lower gap channels are symmetrical, only two gap channels must be
configured. The required spacing can be determined according to the following formula
(indicated for lower channels):
Spacing = [CF of gap channel] - [left sub block CF] + ([RF bandwidth of left sub
block] /2)
Channel Power and Adjacent-Channel Power (ACLR) Measurement