Air Ventilation Unit (Avu); Figure 2-11: Avu Drawer Front Panel - Nera WiLink-I Series System Manual

Connect the DATA port of the NPU to the backbone data equipment (use a
6
straight Ethernet cable to connect to a hub/switch/router). The maximum
length of the Ethernet cable is 100m when operating at 100 Mbps and 70m
when operating at 1 Gbps.
If the MGMT port will be used for remote management, connect it to the
7
appropriate data equipment (use a straight Ethernet cable to connect to a
hub/switch/router). The maximum length of the Ethernet cable is 100m.
Connect the DC power cable to the power jack of the PIU module. If a
8
redundant PIU is installed, connect a DC power cable also to the second PIU
module. Connect the power cord(s) to the 48 VDC power source(s), as follows.
¯
¯
¯
For regular AU-ODU(s): Connect the IF cable(s) (already connected at the other
9
end to the AU-ODU(s)) to the ODU-1/ODU-2 connector(s) of the applicable
AU-IDU module(s). If only a single AU-ODU per AU-IDU is used, connect the IF
cable(s) to the appropriate ODU-1 connector(s). To avoid transmissions at
undesired frequencies, verify that the frequency and bandwidth parameters
are properly configured before connecting the IF cables.
For High Power AU-ODU-HP units: Refer to

2.2.11 Air Ventilation Unit (AVU)

The 2U high, 84 HP wide AVU includes a 1U high integral chamber for inlet
airflow and a 1U high fan tray with an internal alarm module. To support a high
availability Base Station, the fan tray includes 10 brush-less fans, where 9 fans
are sufficient for cooling a fully loaded chassis. To further support high
WiLink-I Modular Base Station System Manual
Connect the black wire to the 48 VDC contact of the power source.
Connect the red wire to the + (Return) contact.
Connect the ground wire to the ground.

Figure 2-11: AVU Drawer Front Panel

Installing the Base Station Equipment
Section 2.3.3.
47