Measurements and result displays
R&S®VSE-K144
20User Manual 1178.9103.02 ─ 08
If you analyze only one frame, the results are the same in both cases.
Note that analyzing all component carriers is slower compared analyzing the viewed
component carriers, because of the post-processing that occurs during the analysis.
Thus, if time is an issue, you can select two component carriers to analyze, and, if you
are later interested in the characteristics of another component carrier, analyze that
component carrier later (the data of the other carriers is available, just not analyzed).
Units
Most of the units of the results are fixed.
The unit of the EVM results depends on the selected EVM unit.
Remote queries.............................................................................................................20
EVM PUSCH.................................................................................................................20
EVM DMRS PUSCH..................................................................................................... 21
EVM PUCCH.................................................................................................................22
EVM DMRS PUCCH.....................................................................................................22
BLER (%)...................................................................................................................... 22
TPUT (%)...................................................................................................................... 23
EVM PRACH.................................................................................................................23
Frame Start Offset.........................................................................................................23
EVM All......................................................................................................................... 23
EVM Peak..................................................................................................................... 23
EVM Phys Channel.......................................................................................................24
EVM Phys Signal.......................................................................................................... 24
Frequency Error............................................................................................................ 24
Sampling Error.............................................................................................................. 24
Power............................................................................................................................24
I/Q Offset.......................................................................................................................25
I/Q Gain Imbalance....................................................................................................... 25
I/Q Quadrature Error..................................................................................................... 25
Crest Factor.................................................................................................................. 25
Remote queries
The remote commands to query individual results and limit check results are indicated
in the description of the respective result.
Alternatively, you can query all results or limit check results at the same time using a
single command.
Remote command:
Results: FETCh[:CC<cc>][:ISRC<ant>][:FRAMe<fr>]:SUMMary:ALL?
on page 171
Limit check: CALCulate<n>:LIMit<li>[:CC<cc>][:ISRC<ant>][:
FRAMe<fr>]:SUMMary:ALL:RESult? on page 193
EVM PUSCH
Shows the EVM for all PUSCH resource elements with a certain modulation in the ana-
lyzed frame (PI/2 BPSK, QPSK, 16QAM, 64QAM, 256QAM).
3GPP release 17 adds 1024QAM modulation.
Result summary