Cisco BR1400 Deployment Manual page 44

Bridge LED Status
Figure 36.
When aligning Bridge links, the BR-1400 has a BNC connector that allows for a DC voltmeter to
be used to align the antenna. Older analog volt meters work best as you can see the "swing" while
moving the antenna. Note: RSSI voltage is not used when aligning a Root bridge in a Point to
Multi-Point link.
Tip: Move the antenna slowly as there is a slight delay while the bridge samples the RSSI.
Antenna Alignment Chart- RSSI signal to DC voltage comparison
Figure 37.
6.12 Configuring the Power Injector
The Power injector contains an Ethernet switch which governs the job of handling packet buffering,
auto-negotiation, and link status information. Two Ethernet switch ports are used. Port 0 is
connected to the ODU through 75 ohm coax cables and Port1 is connected to the internal LAN
through Cat5 cable as shown in the Figure below. The purpose of this switch is to pass data
between two dissimilar network interfaces in both physical and data rate capabilities. Data being
received from one port is rate and duplex adjusted and then forwarded to the appropriate interface.
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