Bosch PRAESENSA, Руководство по установке

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PRAESENSA Fiber transceiver | PRA-SFPLX, PRA-SFPSX | en 163
Bosch Security Systems B.V. Installation manual 2019.11 | V1.00 |
distances up to 40 km, using light with a wavelength of 1550 nm for lowest attenuation of
light. However, for EN54‑16 compliant PRAESENSA systems only the PRA-SFPLX and PRA-
SFPSX are certified for use.
Make sure to use the correct combination of fiber and connector for both sides of the cable,
matching the fiber transceivers. A connection between a multi‑mode fiber transceiver on one
end and a single‑mode fiber transceiver on the other end will not work, because the
wavelength of the light that is produced by the transmitter does not match the wavelength of
the light the receiver is sensitive to.
Fiber optic cables are exceptionally vulnerable. Dust, dirt or tampering might cause physical
damage. To avoid physical damage, avoid extreme bends in fiber optic cables when storing
them and put dust‑caps on the cable ends after disconnection. Also, see subsection
Cable type
recommendations, page 23 for safety precautions when working with fiber optic cables.
Notice!
The SFP transceiver is not standardized by any official standards body, but rather is specified
by a multi‑source agreement (MSA) among competing manufacturers. Some networking
equipment manufacturers engage in vendor lock-in practices whereby they deliberately break
compatibility with generic SFPs by adding a check in the device's firmware that will enable
only the vendor's own modules. As a result, this means that the PRA-SFPLX and PRA-SFPSX
may not work in some brands of Ethernet switches.
15.4.3 Transceiver
To install an SFP transceiver, follow the procedure below:
1.
An SFP transceiver can be damaged by static electricity. Be sure to observe all standard
electrostatic discharge (ESD) precautions, such as wearing an antistatic wrist strap, to
avoid damaging the transceiver.
2. Remove the transceiver from its packaging.
3. Position the SFP transceiver with the label facing up. The transceiver can be
hot‑swapped; there is no need to power‑off the host device to install a transceiver.
4. With the handle on the transceiver oriented towards the host device, slide the transceiver
into the SFP socket and push until it clicks into place.
5. Verify that the handle on the transceiver is in the position that secures the transceiver
and prevents it from being dislodged from the socket.
15.4.4 Fiber cable
To insert a fiber cable with LC connector, follow the procedure below:
1.
Verify that the type of cable is appropriate for the SFP transceiver that is installed.
2. The SFP transceiver has two connectors. Each connector connects to a separate fiber
strand. One is for receiving data and the other is for transmitting data. When connecting
a fiber optic cable to the SFP module, be sure that the receive fiber connector is
connected to the transmitter connector on the remote end‑node device, and the transmit
fiber connector is connected to the receiver connector on the remote node.
3. Remove the dust plugs from the LC fiber cable and save the dust plugs for future use.
Then inspect and clean the cable end‑face.