Usart-Af-1Ldfo; Usart-Ag-1Ldfo - Siemens SIPROTEC 5 Series Hardware Description

The attainable distance in multimode optical fibers is limited by 2 factors.
•
Bandwidth length product
Typical for 62.5 μm/125 μm optical fibers: 400 MHz x km to 800 MHz x km
Typical for 50 μm/125 μm optical fibers: 400 MHz x km to 1200 MHz x km
•
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.
4.2.4.2

USART-AF-1LDFO

Description
Product code
Figure
Connector type
Wavelength
Baud rate
Protocol
Max. distance
Distance 4 km
Laser class 1 as per EN 60825-1/-2
Transmitter power coupled in
multimode optical fiber
Receiver sensitivity
Optical budget
Distance 25 km
Laser class 1 as per EN 60825-1/-2
Transmitter power coupled in
singlemode optical fiber
Receiver sensitivity
Optical budget
4.2.4.3

USART-AG-1LDFO

Description
Product code
SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-C, Edition 10.2017
Protection-interface module for synchronous operation with an optical
interface
P1Zxxxxxxxxxx
1 x duplex LC
λ = 1300 nm
2 Mbit/s for the protection-interface communication
Protection-interface communication
25 km for singlemode optical fibers or
4 km with multimode optical fiber
With the use of 62.5 μm/125 μm and 50 μm/125 μm optical fibers
Minimum
-15.0 dBm
avg
-28.0 dBm
avg
13.0 dB
With the use of 9 μm/125 μm optical fibers
Minimum
-15.0 dBm
avg
-28.0 dBm
avg
13.0 dB
Protection-interface module for synchronous operation with an optical
interface
P1Zxxxxxxxxxx
Plug-In Modules
4.2 Communication Modules
Maximum
-8.0 dBm
avg
-31.0 dBm
avg
–
Maximum
-8.0 dBm
avg
-31.0 dBm
avg
–
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