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PDF TEW4980 Data sheet ( Hoja de datos )
| Número de pieza | TEW4980 | |
| Descripción | CEPT/T1 In/Output Transformer | |
| Fabricantes | Filtran | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TEW4980 (archivo pdf) en la parte inferior de esta página. Total 1 Páginas | ||
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CEPT/T1
www.DataSheet4U.com
In/Output Transformer
TEW4980
TEW4980 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 3 and pin 2 to 4.
When in receive mode, connect the two primary
windings in series, pin 2 to pin 3, thus forming a
center tap at pin 2/3.
Typical applications are:
• Primary rate ISDN network nodes.
• PBX or computer to T1/CEPT Digital trunks.
• TDM Multiplexers.
Certified to EN60950 & EN41003
MECHANICAL
51
2
3
84
TEW4980-1, -2, & -3
WHITE DOT
AT PIN 1
AlLL DIMENSIONS
ARE IN INCHES
Com 5
75 Ω 7
120 Ω 8
TEW4980-4
1
2
3
4
ELECTRICAL SPECIFICATION
Line Impedance
Inductance (mH)
(5-8)
Turns ratio
(1- 2):(3-4):(5-8)
(1- 2):(3-4):(5-7)
Pulse Mask
Longitud. bal.
Return Loss
Dielectric Strength, (Vrms)
TEW4980 -1
75 Ω
> 0.75
1:1: 1.57
-2
100 Ω
> 3.5
1:1: 2.67
CEPT
I.431
G.703
4000
T1/DS1
T1.408
T1.408
4000
-3
120 Ω
> 1.2
1:1: 2
CEPT
I.431
G.703
4000
-4
75/120 Ω
> 1.2
1:1:2
1:1:1.6
CEPT
I.431
G.703
4000
Filtran Limited
229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3,
Tel : (613) 226-1626 Fax : (613) 226-7124
2-21
1 page | ||
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