Document
www.DataSheet4U.com
CEPT/T1
TEW4976 is designed and recommended to be used as a transmit transformer in T1 and CEPT applications with the following devices: CRYSTAL CS61575 Level One CS61535A, CS61574A, CS6158A. LXT304A, LXT305A
Output Transformer
Typical applications are:
TEW4976
• • •
Primary rate ISDN network nodes. PBX or computer to T1/CEPT Digital Trunks. TDM Multiplexers.
Complies with ANSI T1.408 and CCITT I.431.
BABT certified for reinforced insulation to EN60950 & EN41003
Cert # : CR/T/0052
MECHANICAL
6 Device 4
1 2 Line 3
WHITE DOT AT PIN 1
All dimensions are in inches
ELECTRICAL SPECIFICATIONS
TEW4976.chp
TEW4976 - 1
-2
-3
-4
Line Impedance Turns ratio Inductance Pulse Mask Longitud. Bal. (dB ) (mH)
(1 - 3) (1 - 2) (6 - 4) : (1 - 3) (6 - 4) : (1 - 2) (1 - 3)
100 Ω 1: 1.16 c.t > 1.5 T1
75 Ω 1 : 1 c.t > 1.2 CEPT > 40 4000
120 Ω 1 : 1.26 c.t > 1.8 CEPT > 40 4000
120 Ω 75 Ω 1 : 1.26 1:1 >1.8 CEPT > 40 4000
ISSUE: C,
95/04/25
50 - 1.544 KHz
> 40 4000
Dielectric Strength (Vrms)
Filtran Limited
229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3, Tel : (613) 226 1626 Fax : (613) 226 7124
2-17
.