User's Manual

Table Of Contents
Installing the Base Station Equipment
BreezeMAX Modular Base Station System Manual 39
2.2.3 Power Requirements
Use the following table to calculate worst-case power source requirements for the
Base Station equipment (see also some examples in Table 1-13):
2.2.4 HOT SWAP Support
The NPU, AU-IDU and new PIU modules includes a blue HOT SWAP LED and a
micro-switch in the injector/ejector handle to support hot-swap control. After
releasing the ejector's button, the HOT SWAP LED should turn on, indicating that
power to/from the back-panel is disconnected and the module can be removed
safely. For more details refer to Section 2.2.9.
2.2.5 Power Interface Unit (PIU)
The single Euro PIU module is the interface between the Base Station site's DC
power source and the Base Station Chassis Power Supply Units and external
ODUs, which receive power via the IDUs.
The PIU filters and stabilizes the Base Station input power and protects the
system from power problems such as over voltage, surge pulses, reverse polarity
connection and short circuits. It also filters high frequency interference (radiated
emissions) and low frequency interference (conducted emissions) to the external
Table 2-6: Power Requirements, Base Station Equipment
Unit Details
Power Source -40.5 to -60 VDC
PIU 16W maximum (active PIU)
PSU 200W max output power
Efficiency: 80% minimum
NPU 72W maximum, including power required for GPS Adapter (1.2W maximum)
and Outdoor GPS Receiver (6W maximum)
AU-IDU-4CH 46W maximum
AU-ODU-HP 82W maximum (from PIU or Power Feeder)
AVU 24W maximum
Power Feeder 2W per Channel
NOTE
The PSU(s) do not supply power to the AU-ODUs. Up to 6 AU-ODUs can be powered directly from
the power source via the PIU and the back plane. Additional AU-ODUs are powered from ODU
Power Feeders.