Crest Factor Reduction Settings
R&S
®
SMBVB-K548
12
User Manual 1179.0922.02 ─ 01
Generate Waveform
With enabled signal generation, triggers the instrument to store the current settings in a
waveform file. Waveform files can be further processed.
The filename and the directory it is stored in are user-definable; the predefined file
extension for waveform files is
*.wv
.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:CFR:WAVeform:CREate
Algorithm
Displays the algorithm used for the crest factor reduction. The "Clipping and filtering"
algorithm performs a hard clipping. It is followed by a low pass filtering of the result in
an iterative manner until the target crest factor is reached. You can define the settings
of the filter that is used for the calculation.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:CFR:ALGorithm
Desired Crest Factor Delta
Sets the value difference by which you want to change your crest factor.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:CFR:DCFDelta
Max Iterations
Sets the number of iterations that are used for calculating the resulting crest factor. The
iteration process is stopped when the desired crest factor delta is achieved by 0.1 dB.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:CFR:ITERations
Original Crest Factor
Displays the original crest factor of the waveform after the calculation of the resulting
crest factor is completed. The original crest factor is calculated as an average over the
whole waveform, including any idle periods that might be present in TDD waveforms.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:CFR:OCFactor?
Resulting Crest Factor
Displays the resulting crest factor of the waveform after the calculations are completed.
The resulting crest factor is calculated as an average over the whole waveform, includ-
ing any idle periods that might be present in TDD waveforms.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:CFR:RCFactor?
Filter Mode
Selects which filter mode is used for the filtering.
