Systems, Subsystems & Solutions

TEW-4976 Series Output Transformer

TEW-4976 is designed and recommended to be used as a transmit transformer in T1 and CEPT applications with the following devices:

  • CRYSTAL CS61535A, CS61574A, CS61575 CS6158A.
  • Level One LXT304A, LXT305A
Features: 
  • Complies with ANSI T1.408 and CCITT I.431.
  • Primary rate ISDN network nodes.
  • PBX or computer to T1/CEPT Digital Trunks.
  • TDM Multiplexers.
  • Designed to meet reinforced insulation to EN60950 & EN41003

TEW-4974 Series Input/Output Transformer

TEW-4974 and TEW-4974-1 are designed to operate in the 64 kbit mode of the CCITT recommendation G703 for Hierarchical Digital Interfaces.

Features: 
  • Codirectional Interface
  • Contradirectional Interface
  • TEW4974 is specifically designed to meet the stringent BS6301 requirements for reinforced barrier insulation.
  • TEW4974 is fully encapsulated in epoxy to ensure 4000V dielectric strength.
  • TEW4974-1 has an electrostatic shield for improved noise rejection.

TEW-4962 Series U-BUS Input/Output Transformer

TEW-4962 is designed to interface with the subscribers premises (NT) and the 2- wire line side of the Central Office Equipment (LT) in the ISDN Network. TEW-4962 & -1 meet the electrical requirements for the National TP3410 device.

Features: 
  • Low profile construction.
  • Up to 50 mA line current.
  • TEW4962-1 exceeds the requirements on EN60950 and EN41003.

TEW-4923 Series Input/Output Transformer

TEW-4923 is designed/approved for use as an input/output transformer in the ISDN S-Interface.

Features: 
  • Certified to the safety requirements of: EN41003 and EN60959.
  • Fully encapsulated in epoxy for mechanical protection and to insure the dielectric strength requirements.

TEW-4922 Series Input Transformer

TEW-4922 is designed and approved to be used as a receive transformer with MITEL MT89760/-60B and MT89790/-90B devices. Fully encapsulated in epoxy. Also suitable as input/output transformer for other makes of T1/CEPT interface devices.

Features: 
  • Primary rate ISDN network nodes.
  • PBX or computer to T1/CEPT Digital Trunks.
  • High speed data link using T1/CEPT Digital Trunk.
  • Designed to meet reinforced insulation to EN60950 & EN41003

TEW-4921 Series Output Transformer

TEW-4921 is designed and approved to be used as a transmit transformer with the Mitel MT89760/-60B and MT89790/- 90B devices in T1 and CEPT applications. Complies with ANSI T1.408 and CCITT I.431., with regards to Longitudinal Balance. TEW-4921-2 is designed for MT89790B when operating from a single 5 Vdc supply.

Features: 
  • Primary rate ISDN network nodes.
  • PBX or computer to T1/CEPT Digital Trunks.
  • TDM Multiplexers.
  • Fully encapsulated in epoxy.
  • Designed to meet reinforced insulation to EN60950 & EN41003

TEW-4914 Series U-BUS Input/Output Transformer

TEW-4914 is designed to interface with the subscribers premises (NT) and the 2- wire line side of the Central Office Equipment (LT) in the ISDN Network. TEW-4914 & -1 meet the electrical requirements for the MOTOROLA MC145472 device.

Features: 
  • Low profile construction.
  • Up to 50 mA line current.
  • TEW4914-1 is certified to EN60950 and EN41003.

TEW-4855 Series U-BUS Input/Output Transformer

TEW-4855 is designed to interface with the subscribers premises (NT) and the 2- wire line side of the Central Office Equipment (LT) in the ISDN Network. TEW-4855 meets the electrical specifications of ANSI TI.601-1988 and is approved for the Mitel MT8910 DSLIC device.

Features: 
  • High performance 2B1Q line code.
  • Up to 50 mA line current.
  • High insulation between line and equipment side.
  • Exceeds the requirements of: EN60950 and EN41003

TEW-4840 Series U-BUS Input/Output Transformer

TEW-4840 is designed to interface with the subscribers premises (NT) and the 2- wire line side of the Central Office Equipment (LT) in the ISDN Network. TEW-4840 meets the electrical specifications of ANSI TI.601-1988 and is approved for the SIEMENS PEB2091 (V.C1) device.

Features: 
  • Designed to meet EN60950 & EN41003
  • High performance 2B1Q line code.
  • Up to 50 mA line current.
  • High insulation between line and equipment side.

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Features: 

 

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