49
Installing the Wireless Bridge
Optimizing the Distance, Orientation and Channel
4. If the unit's elevation adjustment needs to be reversed, remove the 4 bolts mating
the two mounting bracket pieces together. Remove the 4 mounting screws
attaching the bracket to the ZoneFlex 7731 enclosure, rotate the bracket 180º and
reattach the bracket to the enclosure. Repeat steps 2 through 7. Adjust the
ZoneFlex 7731 to your desired orientation.
NOTE: The cable end of the ZoneFlex 7731 should always be pointing down.
5. Once the ZoneFlex 7731 is in the proper orientation, tighten the thumb screws
flush to the bracket.
6. Using a 10mm ratchet wrench, tighten the two hex bolts to fix the unit's orientation.
The bolt torque value must be 0.6-0.8 Newton meter (Nm).
7. Verify that the ZoneFlex 7731 link performance has not changed.
8. Press the blue Aiming button once again to stop aiming.
9. Repeat steps 1-8 for the other bridge unit.
NOTE: If the unit is mounted in a position that does not allow the user to view the
LEDs, the Web UI can be used for Aiming. On the Status > Wireless page, pressing
the “Start Aiming” link is the same as pressing the blue Aiming button. The Signal
Strength is shown on the Web page. More green bars indicate higher signal strength.
10.If using the Web interface for aiming, adjust the orientation of the units to
maximize the green bars under “Signal Strength.”
11.For more precise aiming, the value under “ACK RSSI” can also be used. A higher
ACK RSSI indicates better signal strength. Both the green bars in the Web interface
and the LEDs on the outside of the bridge units serve as indicators of ACK RSSI
values.
NOTE: For best results, it is important to perform the aiming procedure for both
units.
Aiming in a Point to Multipoint Deployment
In a point to multipoint installation, the procedure is slightly different.
1. Choose the “optimal pair” (one Root and one Non-Root) for your network. The
“optimal pair” can be determined by placement location, throughput require-
ments, or other factors.
• For example, if you are installing three Non-Root Bridges spaced approxi-
mately even in angle from the Root Bridge, you would likely want to choose
the middle one, as shown, for an optimal balance of performance for all three.
2. Complete the point to point aiming procedure for this “optimal pair” first, as
described in “Optimizing the Distance, Orientation and Channel”
on page 47.
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