Positron Teleline 751109/15, Description And Installation

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15
Introduction
Q
The shelf has been successfully tested for the UL standard (94V0) for
flame retardance.
Q
The unit is lightweight and easy to install. The weight of the shelf with the
motherboards is 12.2 kg (27 lbs).
Q
The enclosure resists the infiltration of dust, mist, and water from
sprinklers.
Q
When equipped with a Plug-in Power Supply 751313MC (-24 Vdc),
751318MC (-48 Vdc), 751319MC (-48 Vdc) or 751316 (-24 Vdc), the shelf
can provide power to Station equipment through the Station cable.
Q
The CO and Station backplanes of the shelf provide increased crosstalk
immunity, better impedance matching for high-speed circuits (135
Ω ) and
better current-carrying capacity, for CSA/CAN 60950-1.
Q
Alarm on power failure when using a 751313MC, 751318MC or
751319MC power supply.