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Line Powering

The Single Channel T1 card can be line powered via 60mA simplex current on the T1 line. When an HDSL

or T1 NIU is placed at the CO side of the Fiber Link it must provide span-through line power to the T1

fiber interface card. When line power is available, no external or local power is required to operate the

fiber card. An active T1 line with 60mA line power connected to the fiber interface card should typically

measure 22-30VDC between transmit and receive pairs. If voltage is not present verify the NIU model

number using the NIU Compatibility Chart listed in this document, or contact RLH to ensure span-

through power compatibility.

Installing card housing

Mount housing in equipment rack or attach to backboard.

When installing an RLH card housing, leave room for the door to open and provide enough slack in wiring

and fiber to allow for card access.

! RLH Industries, Inc. • Tel. 866-DO-FIBER • Fax 714 532-1885 • www.ﬁberopticlink.com! Page 6

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ADTRAN T200 FNID Guía de usuario Pagina 6