Digital Transmission Path
[dwdigtra-211011-01.tif, 3, en_US]
Figure 2-5
Examples Using Digital Transmission Path
DLE
Digital line equipment module
CSPi
Central signal processing unit
PDH
Plesiochronous digital hierarchy
SDH
Synchronous digital hierarchy
MUX
Multiplexer
a)
Digital network
b)
2 routes via digital network
c)
One path via fiber optic cable; second path via digital network
d)
Fiber optic module integrated
e)
One path via integrated fiber optic; second via fiber optic, MUX and digital network
f)
Through digital network via MUX and fiber optic C37.94
Example 5:
SWT 3000 digital connections
The digital interface allows the transmission of the protection signals over a PDH or SDH network.
Example 6 and 7:
SWT 3000 digital connections
The digital interface allows the transmission of the protection signals over a PDH or SDH network.
Direct fiber-optic connection between 2 SWT 3000 devices
The SWT 3000 protection signaling incorporates an internal fiber-optic module for long-distance transmission.
The maximum distance between 2 SWT 3000 devices is < 150 km (depending on the optical attenuation).
2.5.2
Functional Description
2.5 Possible Ways of Using the SWT 3000
Smart Communication, SWT 3000 Teleprotection, Equipment Manual
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C53000-G6040-C605-1, Edition 03.2020
