Measurements and Results
R&S
®
FSVA3000/ R&S
®
FSV3000
203
User Manual 1178.8520.02 ─ 01
The remote commands required to perform these tasks are described in
ter 14.5.5, "Measuring the Occupied Bandwidth"
Search Limits ( Left / Right )
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Deactivating All Search Limits
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% Power Bandwidth
Defines the percentage of total power in the displayed frequency range which defines
the occupied bandwidth. Values from 10
% to 99.9
% are allowed.
Remote command:
Channel Bandwidth
Defines the channel bandwidth for the transmission channel in single-carrier measure-
ments. This bandwidth is used to optimize the test parameters (for details see
on page 203). The default setting is 14
kHz.
For measurements according to a specific transmission standard, define the bandwidth
specified by the standard for the transmission channel.
For multicarrier measurements, this setting is irrelevant.
Remote command:
[SENSe:]POWer:ACHannel:BANDwidth[:CHANnel<ch>]
Adjust Settings
Optimizes the instrument settings for the measurement of the occupied bandwidth
according to the specified channel bandwidth.
This function is only useful for single carrier measurements.
All instrument settings relevant for power measurement within a specific frequency
range are optimized:
●
Frequency span: 3 × channel bandwidth
●
RBW ≤ 1/40 of channel bandwidth
●
VBW ≥ 3 × RBW
●
Detector: RMS
The reference level is not affected by "Adjust Settings" . For an optimum dynamic
range,select the reference level such that the signal maximum is close to the reference
level.
(See
" Setting the Reference Level Automatically ( Auto Level )"
The adjustment is carried out only once. If necessary, the instrument settings can be
changed later.
Remote command:
Search Limits ( Left / Right )
If activated, limit lines are defined and displayed for the search. Only results within the
limited search range are considered.
Occupied Bandwidth Measurement (OBW)