Description
The American Fibertek 89D Series transmits one channel of high-quality low distortion bi-directional audio/contact closure on one multimode optical fiber. Designed to be completely transparent, the system field microphone and audio levels can be adjusted to balance and optimize signal levels. Diagnostic indicators provide a quick visual indication of system status. Equipment may be ordered as stand alone modules or rack cards that are mounted in the American Fibertek Card Cages: SR-20/2 or SR-20R/1.
Features
Rack Card Receiver – Master
Interface for Dukane Intercom Systems
Bi-directional Audio and Contact Closure Transceivers
Diagnostics: Power and Optical Presence
Voice Operated (VOX) Transmission
FM Modulated Audio
Specs
Manufacturer American Fibertek Inc.
Condition New
Audio Bandwidth 300 Hz to 10 KHz
THD @ 1 KHz 2%
SNR 50 dB
Connector 5 Pin Screw Terminal
Contact Closure InputSwitch Closure to Ground
Contact Closure Output Dry Contact
Response Time 2 ms
Connector 5 Pin Screw Terminal
Optical Wavelength 850/1300 nm
Loss Budget (62.5/125¼) 12 dB
Connector ST
Temperature (Operating)-20°C to +70°C, non-condensing
Power Supply Module – 24 VAC Center Tap (AFI Part#: PS-24-CT-T). Rack Card – (See AFI Part #: SR-20D/2).
Size Module – 5 3D4” x 6 3D4” x 1 3D8”. Rack Card – 6 1D2” x 1” x 5”.
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