User's Manual

66 4Motion System Manual
Chapter 2 - Installation
2.3.3 Power Requirements
Use the following table to calculate worst-case power source requirements for the
BTS equipment:
Power Calculation Example:
Configuration: A 2.x GHz BTS with 3 AU cards and 4 1x1 ODUs connected to each
AU. Uplink-Downlink split (allocation ratio) of 12-34.
Maximum power consumption that should be supplied by PSUs:
NPU: 68W
3 AUs: 3*46=138W
AVU: 40W
GPS Receiver: 6w
Total maximum power supplied by PSUs: 252W
Table 2-7: Power Requirements, BTS Equipment
Unit Details
Power Source -40.5 to -60 VDC
PIU Power Consumption: 35W maximum (active PIU)
Maximum Supplied Current: 58 A
PSU 300W max output power
Efficiency: 80% minimum
NPU 68W maximum, excluding GPS Receiver (6W maximum)
AU-4CH 46W maximum
ODU-2.x GHz Tx (DL): 89W maximum
Rx (UL): 15W maximum
ODU-3.x GHz Tx (DL): 90W maximum
Rx (UL): 20W maximum
AVU 40W maximum, 23W typical
Outdoor GPS Receiver 6W maximum
NOTE
The PSU(s) do not supply power to the ODUs that are powered directly from the PIU via the
backplane and the AU cards. The PIU can support up to a maximum of 20 1x1 ODUs. Additional
ODUs should be powered from ODU Power Feeders (not applicable for current release).