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CEPT /T1
input/output Transformer
TEW 4994
TEW4994 is designed to be used either as a transmit or a receive transformer in the ISDN primary access network, interfacing SIEMENS PEB2235 and PEB2236 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.
Typical applications are: • • • Primary rate ISDN network nodes. PBX or computer to T1/CEPT Digital trunks. TDM Multiplexers.
MECHANICAL
4
0.50 MAX
1 5
Line
DIMENSIONS ARE IN INCHES 0.50 MAX 0.10 MIN DIA 0.025
All dimensions are in inches 8
2 6
TEW4994, -1 and -2
Com. 4
8 5 DRILL 0.040 8 PLACES 1 WHITE DOT 4 GRID 0.10 x 0.
TEW4994 Datasheet
