Siemens SIPROTEC 5

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Fiber attenuation
The typical attenuation of a 62.5 μm/125 μm optical fiber is from 0.9 dB/km to 1 dB/km for light with the
wavelength λ = 1300 nm. 1.5 dB/km are added for splices, aging and as a reserve. An attenuation of
2.5 dB/km is used for calculation of the distance.
USART-AF-1LDFO
Description Protection-interface module for synchronous operation with an optical
interface
Product code P1Z758
Figure
Connector type 1 x duplex LC
Wavelength λ = 1300 nm
Baud rate 2 Mbit/s for the protection-interface communication
Protocol Protection-interface communication
Max. distance 24 km for singlemode optical fibers or
4 km with multimode optical fiber
Distance 4 km
Laser class 1 as per EN 60825-1/-2 With the use of 62.5 μm/125 μm and 50 μm/125 μm optical fibers
Minimum Maximum
Transmitter power coupled in
multimode optical fiber
-15.0 dBm
avg
-8.0 dBm
avg
Receiver sensitivity -8.0 dBm
avg
-31.0 dBm
avg
Optical budget 16.0 dB –
Distance 24 km
Laser class 1 as per EN 60825-1/-2 With the use of 9 μm/125 μm optical fibers
Minimum Maximum
Transmitter power coupled in
singlemode optical fiber
-15.0 dBm
avg
-8.0 dBm
avg
Receiver sensitivity -8.0 dBm
avg
-31.0 dBm
avg
Optical budget 16.0 dB –
USART-AG-1LDFO
Description
Protection-interface module for synchronous operation with an optical
interface
Product code P1Z468
4.2.4.2
4.2.4.3
Plug-In Modules
4.2 Communication Modules
SIPROTEC 5, Hardware Description, Manual 167
C53000-G5040-C002-N, Edition 04.2022