Rohde & Schwarz FSV3000, User Manual

Page: 181 / 1489

Measurements and results
R&S
®
FSVA3000/ R&S
®
FSV3000
181 User Manual 1178.8520.02 ─ 08
The spacings between all Tx channels can be defined individually. When you change
the spacing for one channel, the value is automatically also defined for all subsequent
Tx channels. This allows you to set up a system with equal Tx channel spacing quickly.
For different spacings, set up the channels from top to bottom.
Tx1-2 Spacing between the first and the second carrier
Tx2-3 Spacing between the second and the third carrier
… …
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 spacing
value). Again, only enter one value for equal channel spacing. For different spacing,
configure the spacings from top to bottom.
For details, see Chapter 5.3.6.2, "How to set up the channels" , on page 200
Remote command:
[SENSe:]POWer:ACHannel:SPACing:CHANnel<ch>
on page 871
[SENSe:]POWer:ACHannel:SPACing[:ACHannel]
on page 870
[SENSe:]POWer:ACHannel:SPACing:ALTernate<ch>
on page 871
Limit Check
During an ACLR measurement, the power values can be checked whether they
exceed user-defined or standard-defined limits. A relative or absolute limit can be
defined, or both. Both limit types are considered, regardless whether the measured lev-
els are absolute or relative values. The check of both limit values can be activated
independently. If any active limit value is exceeded, the measured value is displayed in
red and marked by a preceding asterisk in the result table.
The results of the power limit checks are also indicated in the
STAT:QUES:ACPL
sta-
tus registry (see Chapter 11.2.2.6, "STATus:QUEStionable:ACPLimit register" ,
on page 783).
Remote command:
CALCulate<n>:LIMit<li>:ACPower[:STATe]
on page 881
CALCulate<n>:LIMit<li>:ACPower:ACHannel:ABSolute:STATe
on page 876
CALCulate<n>:LIMit<li>:ACPower:ACHannel:ABSolute
on page 875
CALCulate<n>:LIMit<li>:ACPower:ACHannel[:RELative]:STATe
on page 878
CALCulate<n>:LIMit<li>:ACPower:ACHannel[:RELative]
on page 876
CALCulate<n>:LIMit<li>:ACPower:ALTernate<ch>:ABSolute:STATe
on page 879
CALCulate<n>:LIMit<li>:ACPower:ALTernate<ch>:ABSolute
on page 878
Channel power and adjacent-channel power (ACLR) measurement