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Cisco Aironet 1400 Series Wireless Bridge Hardware Installation Guide. OL-4072-03
OL-4072-04
Chapter 3 Mounting and Alignment Overview
Aligning the Antenna Using LED Indications
Use the Install LED to determine when the bridge successfully associates with a remote bridge and to
verify its mode of operation. After association, the other three LEDs indicate signal strength (see
Table 3-3).
The startup and association sequence depends on the bridge configuration, which can be one of the
following types:
• Default—The bridge attempts to associate with a root bridge for 60 seconds. If it does not associate
with a root bridge, it then attempts to associate with a non-root bridge.
• Preconfigured—The bridge attempts to associate with a remote bridge in the configured mode,
either root or non-root. Because there are no timeouts, it is easier to align the antenna.
Aligning the Antenna Using LED Indications
You can align the integrated antenna using LEDs after the bridge successfully associates with a remote
bridge. In the installation mode before association to another bridge, the Install LED blinks amber. If the
bridge associates to a root bridge, the Install LED turns continuous amber. If the bridge does not
associate to a root bridge in the first 60 seconds, the Install LED blinks green to indicate beacons are
being transmitted and the bridge is waiting for another non-root bridge to associate. After association,
the Install LED turns into continuous green and the Ethernet, status, and radio LEDs then display signal
strength as shown in Table 3-3).
Note For the signal level (dBm), a smaller number represents a stronger signal because the signal level is given
as a negative value.
Table 3-3 LED Installation Mode Signal Strength Display
Signal Level (dBm) Ethernet LED Status LED Radio LED
>–44 On On On
–47 to –44 Fast blink
1
1. Slow blinking rate of 1 blink/sec.
On On
–50 to –47 Medium blink
2
2. Medium blinking rate of 2 blinks/sec.
On On
–53 to –50 Slow blink
3
3. Fast blinking rate of 4 blinks/sec.
On On
–54 to –53 Off On On
–57 to –54 Off Fast blink
1
On
–60 to –57 Off Medium blink
2
On
–63 to –60 Off Slow blink
3
On
–66 to –63 Off Off On
–69 to –66 Off Off Fast blink
1
–72 to –69 Off Off Medium blink
2
–75 to –72 Off Off Slow blink
3
< –75 Off Off Off