
Chapter 2 __________________________________________________________ Product Overview
VAISALA_______________________________________________________________________ 19
The systems can be one of the following types:
-
A single-CDU system with workstations
-
A single-CDU system without workstations
-
A duplicated system with two CDUs.
In a duplicated system both central data units process the same data. If one
of the CDUs fails, the other CDU continues working transparently to users
and without any disruption to system performance. A CDU may be used as
an end-user workstation, too.
Single-CDU System with Workstations
A single-CDU system with workstations contains one CDU that is installed
on a separate computer and at least one workstation.
0207-035
Figure 2
Single-CDU System with Workstations
Single-CDU System without Workstations
A single-CDU system without workstations contains a CDU without
separate workstations. The CDU serves as a workstation.
0109-020
Figure 3
Single-CDU System without Workstations
Field
Sensors
Data Collector
(Optional)
LAN
OWS
CDU
FWS
WV
RCM
FIELD
SENSORS
DATA
COLLECTOR
CDU
(WORKSTATION)