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30/60 Mbps Backhaul
18
Appendix A: The 45 Mbps Backhaul Power Indoor Unit
(PIDU)
Users upgrading from the 45 Mbps Backhaul to the 60 Mbps Backhaul may continue to use
the 45 Mb BH PIDU. This section contains information on the 45 Mb BH PIDU.
The PIDU is used to generate the ODU supply voltage from building AC (mains). The PIDU
also houses status indicators driven from the ODU over the blue & blue/white pair connected
to pins 4 and 5 of the RJ45 plugs and sockets employed.
Figure 87: 45 Mbps Backhaul Power Indoor Unit (PIDU)
The front panel contains indicators showing the status of the power and Ethernet
connections.
The power indicator is illuminated when the PIDU is receiving AC (mains) power.
The Ethernet indicator normally illuminates when the Ethernet link is working; Flashing when
there is Ethernet activity; the fact that it lights also indicates that the ODU is powered. At
power up the LED will flash 10 times to indicate that a correct start up sequence has
occurred. See Section 9 for further fault finding information.
The bottom of the PIDU houses the Ethernet connection via RJ-45 socket, an entry point for
PIDU/ODU cabling and the reset button.
Figure 88: 45 Mbps Backhaul Reset Switch Location
◦
The reset switch is used for various purposes identified in Table 3.
Issue 3.1, July 2006
User Guide
Page 160 of 162
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