Overview

The 2251D fiber links transmit a single channel of switch/status
information or control-function signals over one single-mode fiber.

Programmable Outputs

Outputs are Normally Open (NO) and Normally Closed (NC) reed
relays. A complete system consists of a transmitter and a receiver,
configured as standalone units or as rack cards.

Superior Diagnostics

The SMARTS™ diagnostic technology provides system status LEDs
that monitor the status of the data path and the optical signal.

Standard Features

• One-way transmission over one multimode fiber
• Single-channel contact closure
• FM transmission
• Operates up to 3.2 miles (5.2 km)
• 13 dB optical budget
• Optical AGC
• SMARTS diagnostics
• Standalone and rack configurations