EXPRESS DAS
Installation and Operations Manual
22
EXPRESS DAS Installation and Operations Manual – Version 2.2 November 2013
3.2.4
Main Power Supply Unit (MPSU)
The BIU requires -48v power, which is provided by a rack mounted DC power supply unit connected to
the Main Power Supply Unit (MPSU) in the BIU. The MPSU de6V and +9V DC power for
components in the BIU and ODU. On the front panel, the MPSU has an output test port and LEDs to
indicate power to the unit, DC Alarms and other fault conditions. You can also access the power on/off
switch for the unit at the front panel.
Figure 3.7 – MPSU at a Glance
Содержание EXPRESS Single-Carrier DAS
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