Installation Instructions

Figure 9: BBU Rear View
2.5
TEKO DAS Fan Rack
The TEKO DAS fan rack is mounted below the TEKO DAS shelf and cools the modules located
therein. The air direction is low to high vertically. Power to this rack is supplied from the LTE
Transceiver Power Supply and the health monitoring is done with a connection to the supervisory
module in the TEKO DAS shelf.
For full specifications, see TEKO DAS Platform - Master Unit Components.
Figure 10: TEKO DAS Unit – Front View
Figure 11: TEKO DAS Unit – Rear View
Table 5: TEKO DAS Unit Description
Access Point Description
LED Forced-air cooling sub-rack general operating
LED status:
Green: normal operation
Blinking Orange: presence of active alarms
with warning severity level
Orange: presence of active alarms with mi-
nor severity level
Blinking Red: presence of active alarms with
major severity level
Red: presence of active alarms with critical
severity level
RS485 RJ45 connector for RS485 connection to the
Supervision Module
28V ; 10A MAX
23VDC ± 0.5VDC input (max 10A)
Protective earthing terminal
TBD
Chapter 2 : 900 MHz eNodeB
Description
18
Exhibit D page 19 of 38