Table 1-4: Psu Requirements, Configurations With One Npu (Excluding Psu Redundancy); Table 1-5: Psu Requirements, Configurations With Two Npus (Excluding Psu Redundancy) - Nera WILINK I System Manual

Chapter 1 - System Description
Number of AUs
1 - 2
3 - 6
Table 1-5 displays the number of PSU modules (excluding redundant units)
required for various Base Station configurations with NPU redundancy (two
NPUs, not supported in current version):
Number of AUs
1 - 5
6
1.2.6.1 Air Ventilation Unit (AVU)
The 2U high AVU includes a 1U high integral chamber for inlet airflow and a 1U
high fan tray with an internal alarm module. To support high availability Base
Station, the fan tray includes 10 brush-less fans, where 9 fans are sufficient for
cooling a fully loaded chassis. A failure in any of the fans is indicated by both the
front panel LEDs and a trap that is sent to the management system. To further
support high availability, the chassis may operate with the hot-swappable fan
tray extracted from it for a period of time sufficient for replacing it (up 10
minutes).
8
Table 1-4: PSU Requirements, Configurations with one NPU
(excluding PSU redundancy)
Table 1-5: PSU Requirements, Configurations with two NPUs
(excluding PSU redundancy)
WILINK I MODULAR BASE STATION SYSTEM MANUAL
Minimum Required Number of PSUs
1
2
Minimum Required Number of PSUs
2
3