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