Single 2W/4W AC Data Interface Card

The Single 2W/4W Interface Card isolates a single two-wire or a single four-wire AC data line using a fiber link. The interface card is provided in two variations:

• The CO side card can be powered from the line sealing current: loop sealing when operated in 2W mode, or simplex sealing when operated in 4W mode
• If line sealing current is not provided by the CO equipment, the card can be powered locally through the shelf’s supply of -48 Vdc. When line powered, the card will operate with sealing currents as low as 7 mA
• The card will not reproduce the loop or sealing current on the Station side
• The Station side card can only be powered locally, and the power source provides no more than -48 Vdc

Applications:

• Voice band or any modem compatible up to 56 kbps
• Dedicated line modems
• Supervisory control and data acquisition (SCADA) systems
• Tone relay control systems
• Analog carrier systems
• Any other equipment using tone related signalling

Features

The Single 2W/4W card uses a type of encoding on the fiber that reduces power consumption to a minimum, while still being able to transmit over 2km (1.2 miles) of multi-mode fiber and 16km (9.9 miles) of single-mode fiber.

• Station -48 Vdc Multi-mode ST Connector - Local Powered 720460MST
• Station -48 Vdc Single-mode SC Connector - Local Powered 720460SSC
• Central Office -48 Vdc Multi-mode ST Connector - Line Powered 720470MST
• Central Office -48 Vdc Single-mode SC Connector - Line Powered 720470SSC