ADC UTU-701C User Manual
700-701-100-02
Functional
Description
UTU-701 and ETU-751 List 1
August 9, 2002
13
Power Sources
The line and desktop units receive power from the following sources:
•
A shelf-mounted UTU-701C receives power from a local source of -36 Vdc to -72 Vdc.
•
An enclosure mounted UTU-701C receives power from a local source of -36 Vdc to -72 Vdc or from the
enclosure’s built-in AC-to-DC power supply (when provided).
enclosure’s built-in AC-to-DC power supply (when provided).
•
The ETU-751C desktop unit receives power from a source of 100 to 240 volt, 50 or 60 Hz, AC power.
Input voltage for the UTU-701C line unit (nominal -48 Vdc, tolerance -36 to -72 Vdc) must be
supplied by an isolated DC source that complies with TNV or earthed SELV requirements of the
latest version of IEC 950.
supplied by an isolated DC source that complies with TNV or earthed SELV requirements of the
latest version of IEC 950.
The single-pair rate selectable HDSL units (local and remote) must be locally powered.