Document No. 538-588
Installation Instructions
Rev. 3, December, 2001
Page 2 of 3
Siemens Building Technologies, Inc.
Prerequisites
CAUTION:
Avoid mounting the hub in a position that
forces the fiber to make turns tighter than a
three-inch radius. The mounting surface
must also be vibration free.
•
Fiber cables installed and terminated with
the proper connectors.
•
Individual fibers identified as Transmit and
Receive.
•
A report from the installer showing the loss
of optic power per section of fiber cable,
including all connectors. The loss must be
less than the required link budget.
•
Source of transient protected for 115 Vac or
230 Vac. All Field Panel outlets are
protected or an MOV protected 120 Vac
duplex outlet (529-804), or three 250V
MOVs (527-969) connected for 230V
operation (refer to Figure 6) can be ordered.
•
The BLN or FLN trunk has been checked for
opens, shorts, and proper shielding.
•
The mounting bracket (if used), or other
locally fabricated bracket, is available.
Instructions
1.
If wall or rack mounting brackets are being
used, refer to the installation instructions for the
brackets (P/N 538-718).
2.
Remove the protective cap from the transmit
port and transmit fiber, and connect the fiber to
the port labeled “TX1” (refer to Figure 2). Do not
use any tools to tighten the connectors.
3.
Remove the protective cap from the receive
port and receive fiber, and connect the fiber to
the port labeled “RX1” (refer to Figure 2). Do
not use any tools to tighten the connectors.
4.
Repeat Steps 2 and 3 for the remaining ports.
Remember to keep the transmit and receive
fibers together on the same numbered TX and
RX ports for a remote interface.
5.
Connect the DC power cord of the power pack
and plug the power pack into the transient
protected for 115 Vac or 230 Vac source.
6.
If multiple hubs are to be configured on the
same logical trunk, then repeat Steps 1 through
5 for as many trunks as required. Then use the
hub inter-connect cables to connect the hubs
together into one logical network.
When connecting an inter-hub trunk to an older
style hub (the older style uses two RJ11
connectors) use the following pin connections:
on the OUT port pin 3 is “+” and pin 4 is “-“; on
the IN port pin 4 is “+” and pin 3 is “-.“ Use a
locally obtained RJ11 cable with one end cut to
connect the OUT or IN port of the older hub to
the new style hub.
Use trunk terminators at each end of the trunk
when either more than two hubs are connected
via the inter-hub trunk, or the inter-hub trunk
connects to a local trunk.
7.
Connect the earth ground wire (2’ green wire,
included) from the trunk shield connection to
earth ground. The ground can be either the field
panel chassis using the nutdriver to put the
ground terminal under the chassis mounting
nut, or the electrical box which powers the
interface.
The installation is now complete.
NT0214R1
BRACKET
FACE
BRACKET
INTERFACE
MOUNTING
SCREW
INTERFACE
BACK
END BEZEL
Figure 3. Rack Mount of Fiber Optic Hub (Side View).
