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Filtran - CEPT /T1 input/output Transformer

Numéro de référence TEW4994
Description CEPT /T1 input/output Transformer
Fabricant Filtran 
Logo Filtran 





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TEW4994 fiche technique
CEPT /T1
www.DataSheet4U.com
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
MECHANICAL
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.
0.50
MAX
0.50 MAX
DIMENSIONS ARE
IN INCHES
0.10 MIN
DIA 0.025
All dimensions
are in inches
0.45 MAX
85
WHITE DOT
14
WHITE DOT
AT PIN 1
DRILL 0.040
8 PLACES
GRID 0.10 x 0.10
Drill
0.040"
8 Places
41
5
Line
2
86
TEW4994, -1 and -2
Com. 4
Line
75 7
120 8
1
5
2
TEW4994-3
6
ELECTRICAL SPECIFICATIONS
Line Impedance
Inductance (mH)
(4-8)
Turns ratio
(1-5):(2-6):(4-8)
(1-5):(2-6):(4-7)
Pulse Mask
Longitud. Bal.
Return Loss
Dielectric Strength (V rms)
TEW4994
75
> 2.0
1:1:1.57
CEPT
I.431
G.703
1500
TEW4994-1
100
> 3.4
1:1:2.67
T1/DS1
T1.408
T1.408
1500
TEW4994-2
120
> 2.0
1:1: 2
CEPT
I.431
G.703
1500
TEW4994-3
75/120
> 2.0
1:1:2
1:1:1.57
CEPT
I.431
G.703
1500
Filtran Limited
229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3,
Tel : (613) 226 1626 Fax : (613) 226 7124
2-23

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