120 Belmont Drive • Somerset, NJ 08873 • 732-302-0660 • Fax: 732-302-0667 • Toll Free: 877-AFI-7200
e-mail: mail@americanfibertek.com www.americanfibertek.com
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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.
Single Fiber Bi-directional Transceivers
Audio and Contact Closure System Interface
For Dukane Intercom Systems
89D
SERIES
MULTIMODE
FEATURES:
• Bi-directional Audio and Contact
Closure Transceivers
• Diagnostics: Power and Optical
Presence
• Voice Operated (VOX) Transmission
• FM Modulated Audio
SPECIFICATIONS:
Audio:
Bandwidth ...............................300 Hz to 10 KHz
THD @ 1 KHz..................................................2%
SNR..............................................................50 dB
Connector ...........................5 Pin Screw Terminal
Contact Closure:
Input ............................Switch Closure to Ground
Output ...............................................Dry Contact
Response Time ............................................2 ms
Connector ...........................5 Pin Screw Terminal
Optical:
Wavelength....................................850/1300 nm
Loss Budget (62.5/125µ) ..........................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-20/2
Size:
Module - 5
3
⁄4”x 63⁄4”x 13⁄8”
Rack Card requires one rack slot - 6
1
⁄2” x 1” x 5”
ORDERING INFORMATION:
MT = Module Transmitter - Station
MR = Module Receiver - Master
RT = Rack Card Transmitter - Station
RR = Rack Card Receiver - Master
Example: MT-89D to RR-89D