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Instrument Function
R&S
®
SMJ100A
338
Operating Manual 1403.7458.32 ─ 14
●
A "Cut Off Frequency Shift" = -1 results in a very narrow-band filter
●
Increasing the value up to 1 makes the filter more broad-band
●
By "Cut Off Frequency Shift" = 0, the -3 dB point is at the frequency determined by
the half of the selected "Sample Rate".
User filter
The user filter file must have extention
*.vaf
and can be created with the R&S filter
wizard.
The filter wizard (filtwiz) is a tool from Rohde & Schwarz designed for creating filter
files that can be imported on a R&S
SMJ. Its main purpose is the conversion of user-
defined finite impulse response (FIR) filters into the filter format (
*.vaf
). Beyond this
filtwiz provides designs for standard filters, e.g. Root Raised Cosine, Gaussian.
The program was developed on a 32-bit Microsoft Windows platform under MATLAB.
For more information, refer to the description "Introduction to "filtwiz" Filter Editor" on
the Rohde&Schwarz Internet page.
5.8.2.5
Conflicting Settings - Custom Digital Mod
Having selected a modulation procedure, not every combination is possible when
selecting the settings for the modulation parameters "Symbol Rate" and "Coding".
These restrictions inevitably give rise to conflicting settings if a parameter is changed
and leads to a prohibited combination.
A conflicting setting is indicated by a message on the Info line in the display. The
R&S
SMJ displays the setting entered by the user, but the modulation signal actually
generated does not correspond to this display. A conflict of settings can be triggered if
the user changes a parameter inappropriately. The message disappears as soon as a
conflict-free setting is entered.
A list of the possible settings conflicts and messages in digital modulation can be found
in
Chapter 9, "Status Information, Error Messages and Troubleshooting"
5.8.2.6
Custom Digital Mod User Interface
Baseband Signal - Baseband Block
Содержание SMJ100A
Страница 34: ...Preface R S SMJ100A 18 Operating Manual 1403 7458 32 14 Notes on Screenshots...
Страница 86: ...Preparing for Use R S SMJ100A 70 Operating Manual 1403 7458 32 14 LXI Configuration...
Страница 139: ...Manual Operation R S SMJ100A 123 Operating Manual 1403 7458 32 14 Legend of Front Panel Controls...
Страница 140: ...Manual Operation R S SMJ100A 124 Operating Manual 1403 7458 32 14 Legend of Front Panel Controls...
Страница 454: ...Instrument Function R S SMJ100A 438 Operating Manual 1403 7458 32 14 Baseband Signal Baseband Block...
Страница 826: ...Remote Control Commands R S SMJ100A 810 Operating Manual 1403 7458 32 14 UNIT Subsystem...
Страница 828: ...Maintenance R S SMJ100A 812 Operating Manual 1403 7458 32 14 Storing and Packing...
Страница 843: ...Hardware Interfaces R S SMJ100A 827 Operating Manual 1403 7458 32 14 Figure A 2 BERT circuit diagram BERT Connector...
Страница 844: ...Hardware Interfaces R S SMJ100A 828 Operating Manual 1403 7458 32 14 BERT Connector...