Measurements and results
R&S
®
FSVA3000/ R&S
®
FSV3000
170
User Manual 1178.8520.02 ─ 08
Figure 5-27: Gap channel definition for lower gap
If the gap channels are not symmetrical, you must configure up to four channels indi-
vidually. The formula indicated above applies for the lower channels. For the upper
channels, the spacing is defined as:
Spacing = [right sub block CF]- [CF of gap channel] - ([RF bandwidth of right sub
block] /2)
According to the MSR standard, the
Cumulative Adjacent Channel Leakage Ratio
(CACLR) power
must be determined for the gap channels. The CACLR power is mea-
sured in the two gap channels for the upper and lower gap. The power in the gap chan-
nels is then set in relation to the power of the two closest transmission channels to
either side of the gap. The CACLR power for the gap channels is indicated in the
Result Summary.
In addition, the ACLR power for the individual gap channels is indicated in the Result
Summary. The ACLR power of the lower gap channels refers to the TX channel to the
left of the gap. The ACLR power of the upper gap channels refers to the TX channel to
the right of the gap. A separate relative limit value can be defined for the ACLR power.
Adjacent channels
Adjacent channels are defined as in common ACLR measurements using bandwidths
and spacings, relative to the uppermost or lowermost transmit channels in the sub
blocks (see also
●
The spacing of the lower adjacent channels refers to the CF of the first Tx channel
in the first sub block.
Channel power and adjacent-channel power (ACLR) measurement
