!
CAUTION
Exercise caution with laser beams of the optical plug-in modules.
The laser beams can damage your eyes. If you do not comply with the safety notes, this will result in
medium severe or slight injuries.
²
Do not look directly into the optical fiber terminals of the active optical plug-in modules, not even with
optical devices.
i
i
NOTE
Laser class 1 is adhered to in compliance with EN 60825-1 and EN 60825-2, in the case of ≤ 62.5 μm/
125 μm optical fibers.
Connection to a Multiplexer via FO-Box
[dwconswf-280611-01.tif, 1, en_US]
Figure 2-14
Connection of the SWT 3000 via Fiber-Optic Cable to a FO-Box
The SWT 3000 is operating via fiber-optic cable and a Fiber-Optic Box (FO-Box) for the interface conversion
with a PDH- or SDH-Multiplexer. For each transmission direction, a separate fiber is necessary. The FO-Box
contains the FOM with the electrical/optical conversion, the interface to the multiplexer, and a power supply.
An adaptor is installed for the conversion from the system connector to the alarm relay, the connectors for the
digital interface (X.21/G703.1/G703.6), and the power supply connector.
Table 2-18
Specification of the Fiber-Optic Box (FO-Box)
Fiber-optic module
SFP module
Fiber type
multi-mode with modules using 850-nm wavelength, single-mode with modules
using 1300-nm wavelength
Wavelength
850 nm or 1300 nm
Optical connector
LC-connector
Range
Up to 2 km at 850 nm (depending on the attenuation of the fiber)
No minimum attenuation limit for 1300 nm
2 x LED
Tx-Alarm and Rx-Alarm (RX + F6UE-Alarm)
Digital interface
X.21, G703.1, or G703.6 selectable with jumpers
Bit rate
64 Kbps or 2 Mbps
2.9.4
Functional Description
2.9 Fiber-Optic Connection
Smart Communication, SWT 3000 Teleprotection, Equipment Manual
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C53000-G6040-C605-1, Edition 03.2020
