SWT 3000 Equipment Manual Functional Description
© SIEMENS AG 2008 Edition p3_3_2x 08/09 Page - 7
Combination of analog and digital interfaces
Multipath transmission can also be implemented in the SWT 3000 system by using the analog in-
terface (LIA) and the digital interface (LID-1). This combination, like only analog or only digital
transmission is possible for stand-alone SWT 3000 units and for units integrated (iSWT3) in the
PLC system PowerLink.
You will find a detailed overview of the equipment combinations with the resulting applications
in the section <Possible ways of using SWT 3000>.
Transmission paths
The following transmission paths can be used depending of the nature of the supply networks:
High-voltage and medium-voltage overhead lines
High-voltage and medium-voltage cables
Aerial and (buried) underground cables
Radio relay routes
Digital networks (SDH/PDH)
FO modem
This results in the following possible applications:
Table 2: Possible applications of the SWT 3000
Configuration Option
SWT 3000 stand-alone for analog route digital alternate route
SWT 3000 stand alone for digital route analog or digital alternate route
SWT 3000 integrated in PLC unit PowerLink analog digital alternate route
SWT 3000 integrated in PLC unit PowerLink digital analog or digital alternate route
SWT 3000 stand alone with connection via FOM digital alternate rout
SWT 3000 stand alone with connection via FOM to the Pow-
erLink
digital alternate rout
SWT 3000 stand alone with connection of the digital interface
via FOM to a PDH or SDH multiplexer
analog or digital alternate route
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