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RS232 Fiber Optic Multiplexer ("Micro" 4/8 ch; Async/Sync)


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The pocket-sized 8 channel TC1880 "Micro" RS232 Fiber Optic Multiplexer offers the lowest per-channel cost of any comparable fiber optic mux currently available.

The remarkably small (2" X 4") TC1880 "Micro" RS 232 Fiber Optic Multiplexer is extremely useful for connectivity applications including linking or extending 4 or 8 asynchronous or synchronous terminals, printers and status collecting devices. It can also be used to extend up to eight telephone lines to remote locations with the Model TC1900 RS-232 Phone Extender.

Product version may differ from current manual. For assistance or proper manual version please contact Technical Support.


  • Multiplexes Async/Sync Simultaneously
  • Data Rates up to 56 Kbps
  • Multimode or Single Mode (850/1300/1550nm)
  • Small Size (5/6" x 4" x 13/4")
  • Up to 8 Async Channels
  • Up to 4 Sync Channels (Ext. Clock)
  • Extend Up to 8 Telephones with TC1900 Quick-Talk Telephone Extender
  • Hardened Temperature


The TC1880 Micro Multiplexer is a simple and cost effective method for connecting large numbers of async or synchronous terminals, printers and status collecting devices. It is typically used in harsh environments where ground loops, EMI/RFI interference and lightning conditions may affect transmission signal quality.
TC1880 - 4/8 Channel Sync/Async RS-232 Fiber Optic Micro-Mux
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Data Rates (per channel)
  1. Async or Sync (w/ ext. clock)up to 56 Kbps
Channel Capacity
  1. Channel Capacity8
  1. TransmitterLED/ELED
  2. ReceiverPIN Diode
  3. Wavelength850/1300nm MM, 1300/1550nm SM
  4. Fiber Optic ConnectorsST, Optional FC
  5. Loss Budget * - 850/1300/1550nm
  6. Multimode @ 62.5/125µm15dB
  7. Single Mode @ 9/125µm20dB
  1. ConnectorDB25 Female
  2. Interface(DCE) RS-232
  1. Bit Error Rate1 in 109 or better
Visual Indicator
  1. LEDsPower, Sync, Signal Presence of Each Channel
  1. Standard12VDC @250mA
  2. Optional24VDC, 115/230VAC (w/external power cube)
  1. Operating-10°C to 50°C
  2. Hi-Temp (optional)-20°C to 70°C
  3. Storage-40°C to 90°C
  4. Humidity95% non-condensing
Physical (Standalone Unit)
  1. Height(2.24 cm) 0.88"
  2. Width(10.05 cm) 3.96"
  3. Depth(4.40 cm) 1.73"
  4. Weight(104.0 gm) 3.67 oz
  5. Cable Assembly*1 Foot Long
* Contact factory for higher requirements


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