Skip to main menu Skip to main content Skip to footer


The FIM-S222 optical fiber interface allows one or two digital matrix intercom user panels, interface modules or 4-wire sources to be remotely connected to Eclipse, Eclipse HX and Matrix +3 intercom systems over optical fiber. A pair of FIM-S222 interfaces is required for each fiber link; one at the matrix frame and the other at the matrix user panel. See FIM-4W2 as a replacement for the FIM-S222.


  • For use with Eclipse HX Digital Matrix systems
  • Interfaces with one or two digital matrix panels
  • Highly secure connections
  • 24-bit digital DEMUX
  • 48kHz audio sampling rate
  • Sends and receives RS-422 control data
  • Flat frequency response up to 20kHz, S/N >80dB
  • Up to 20km (12 miles) range with fiber using single mode
  • Up to 5km (3 miles) using multi-mode fiber
  • Works in demanding environmental conditions
  • RJ45 connectors for direct connection with matrix panels, frames and interfaces
  • Can be used to extend any line level 4-wire audio signal / RS-422 signal
  • Can be used with the earlier FIM-102D but the audio will require 5dB of gain.
  • Can be used with the FIM-1222 Fiber cards

Item Code




Transmission Method: Digital, TDM, 24-bit, 48k samples/sec

Input Impedance: 600 Ohms, balanced

Output Impedance: 30 Ohms, balanced

Maximum Input Level (600 Ohms): +18dBm (peak)

Maximum Output Level (from 30 Ohms): +18dBm into 600 Ohms

Frequency Response (@0dBm from 50Hz to 15kHz): ±0.2 dB

Total Harmonic Distortion + Noise: from 20Hz to 20kHz @ +8dBm, <0.2% at 1kHz @ +18dBm, <0.007%

CMRR (Common Mode Rejection Ratio): ±55db @ 1kHz

Signal to Noise Ratio: unweighted, 20Hz - 20kHz, ref. to +18dBm clip level, >80dB

Aggregate Digital Data Rate: 147.456 MB

Electro-Optical System Margin Data

Operating Wavelength: 1300nm

TX output into cable: -8 to -15dBm

RX sensitivity: =31dBm

OP Margin Single Mode: 19dBm

OP Margin Multi Mode: 12dBm

Matrix Data Communications (Frame-to-Panel Digital Data)
Transmission Rate

RS-422, Balanced TTL Levels: 0 to 150 kBits/sec

Jitter: 1.12 msec* *Higher rates possible dependent upon user system jitter tolerance


Connectors: RJ-45, coaxial

Optical Connectors: ST-type

Power Connector: 2.5mm Circular

Power Supply

Input Voltage Range: 9-18V DC

Power Consumption: @13.8V per end, all channels at full level; <5 watts

A/C Adapter: Supplied


Operating: -40° - +149°F (-40° - +65°C)

Humidity: 0 – 95%, non-condensing


7.1 x 3.3 x 1.1in (WxHxD)

(180.3 x 83.8 x 27.9mm)

0.5lbs (0.23kg)

Ready to get

Our team of communications professionals are here to support your project. Contact us today to start designing your custom intercom solution.

Sales Contacts Where to Buy/Rent