TEW-4994 Series Input/Output Transformer
TEW-4994 is designed to be used either as a transmit or a receive transformer in the ISDN primary access network, interfacing SIEMENS PEB2235 and PEB-2236 to a 75, 100 or 120 ohm line. When in transmit mode, connect the two primary windings in parallel, pin 1 to 2 and pin 5 to 6. When in receive mode, connect the two primary windings in series, pin 5 to pin 2, thus forming a center tap at pin 5/2.
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