Siemens SWT-3000 User Manual

SWT 3000 Equipment Manual PU3 Module
© SIEMENS AG 2008 Edition p3_3_x 08/09 Page - 5
When the unit is started a self-test is carried out. A watchdog also monitors the functionability of
the internal digital signal processor (DSP). In the event of malfunctions the transmitter output and
the relay outputs of the unit are blocked. An overview of the functional units of the PU3f is shown in
the following diagram.
LIA
DLE
PU3
ISV
PU3f
ALRS
LID-1
LID-2
CLE
optional
IFC-D/P
SSI
VF
Controller
X.21/G703.1/G703.6
X.21/G703.1/G703.6
DSP
D
A
CSP
CSP
FOM
PU3f Processor and analysis module CSP Central signal processing
IFC-x Interface module FOM Fibre optic modem
iSV Internal power supply CLE Copper line equipment
DLE Interface module to digital LID-x Line interface digital
transmission paths DSP Digital signal processor
Figure 3: Functional units of the PU3 module

Siemens SWT-3000 Specifications

General

Brand	Siemens
Model	SWT-3000
Category	Industrial Electrical
Language	English