Vivax Metrotech FLS-2, Руководство пользователя

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6 Rack Installation of the Transmitter
WARNING
The intra-building ports of the FLS-2 or subassembly are suitable
for connection to intra-building or unexposed wiring or cabling
only. The intra-building ports of the FLS-2 or subassembly MUST
NOT be metallically connected to interfaces that connect to the
OSP or its wiring. These interfaces are designed as intra-building
interfaces (Type 2 or Type 4 ports as described in GR-1089-CORE,
Issue 6) and require isolation from the exposed OSP cabling.
Adding Primary Protectors is insufficient protection to connect
these interfaces metallically to OSP wiring.
6.6.1 NEBS Installing the Transmitter with grounding
Follow these instructions when installing the transmitter into a rack with grounding:
1. Select the right bracket set for the rack width.
2. The brackets' unpainted sides (facing chassis and rack) should be cleaned and
coated with an anti-oxidant solution.
3. Attach the bracket on each side of the chassis with the supplied screws.
4. Attach the rack mounting brackets to the rack with a paint-piercing washer.
5. For instructions, see section 6.4, “Attaching the Rack Mounting Brackets.” Have
one person lift and hold the transmitter in the selected rack position.
6. Have the second person secure each mounting bracket to the rack using the
Philips-head screwdriver and two thread-forming screws per bracket.
Other details can refer to 6.5 Installing or Replacing the Transmitter.
6.6.2 NEBS Requirements
• The FLS-2 shall be located in a restricted access location where only crafts
personnel are allowed access.
• The FLS-2 shall be installed and connected to the CBN (Common Bonding
Network).
• The FLS-2 is suitable for connection to the Central Office.
• The battery returns of the FLS-2 shall be connected as DC-I (Isolated DC return).
• The FLS-2 shall be grounded via a copper ground conductor.
• All bare grounding connection points to the FLS-2 shall be cleaned and coated
with an anti-oxidant solution before connections are made.
• All surfaces on the FLS-2 that are un-plated shall be brought to a bright finish and
treated with an anti-oxidant solution before connections are made.
• To ensure electrical continuity, all non-conductive surfaces on the FLS-2 shall be
removed from all threads and connection points.
• The FLS-2 utilizes two side rack mounting brackets with two thread-forming
screws and two paint-piercing washers on each side to secure it on the frame. The
grounding is through the rack frame.
• The FLS-2 can operate from 48 Vdc at a maximum current level of 3 A with a 10 A
built-in circuit breaker protection.