1 to 10 Mbps Multi-mode to Single Mode Fiber Optic Converter

TC3020 Multi-mode to Single Mode Fiber Optic Converter converts multi-mode formats to single mode, or  single mode to multi-mode - to up to 20 Mbps.

Lower Speed Fiber Optic
multi-mode to single-mode converter

TC3020 -series 
30 bps to 1 Mbps
1 Mbps to 10 Mbps
1.2 Kbps to 5 Mbps

  • Supports Burst Data
  • Data Rates up to 10 Mbps
  • Distances up to 30km*
  • Multimode & Single Mode (850/1300/1550nm)
  • Multiple Diagnostic  LED Indicators
  • Test Signal Generator
  • Built-In Loopback Functions
  • Local Dry Contact Alarm Relay
  • Stand Alone or Rackmount
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The TC3020 Mode Converter is frequently used to convert multimode to single mode, or vice versa, for various low speed devices in SCADA, Automation and Process Control communication environments.  It is also used for Burst Data applications.  This conversion is done to cross-connect different fiber types, regenerate optical signals and/or extend transmission distances.



Intended for low speed and Burst Data applications, the TC3020 Multimode-to-Single Mode Fiber Optic Converter converts multimode formats to single mode formats, or vice versa, for data transmission up to 5 Mbps.

The TC3020 is also used to regenerate or extend optical signals.  It will convert, regenerate or extend 850nm, 1300nm or 1550nm wavelengths up to distances of 30 km*.

Eleven LEDs are provided for diagnostics, monitoring optic signals in both directions and indicating system status.  A Test Signal Generator is available to help technicians conduct various installation tests including fiber link verifications.  A Dry Contact Relay Alarm is also provided as a standard feature.

The TC3020 works with all popular types and sizes of fiber optic cable.  Fiber optic connectors are ST or FC type.  Power is 12VDC or 115/230VAC with an external power cube. The TC3020S is a Standalone Unit. The TC3020R is the Rackmount Card Unit that requires TCRM192 or TCRM196 Rackmount Card Cages. An extreme temperature version (-20C to 70C), Model TC3020T, is also available.

A terminal block connector on the rear panel provides for the dry contact relay alarm.  Normally in the OPEN position, any loss of electrical or optical signal will trigger an alarm condition and force the switch to the CLOSED position.  This relay can be used in conjunction with an external device to monitor the condition of the link.

Technical Specifications    

Data Rates
TC3021: 30 bps to 1 Mbps
TC3022: 1 Mbps to 10 Mbps
TC3023: 1.2 Kbps to 5 Mbps
Transmitter LED/ELED
Receiver PIN Diode
Wavelength 850/1300nm Multimode
1300nm Single Mode
Fiber Optic Connectors ST or FC
Loss Budget* (850/1300nm) Multimode @ LED/ELED: 15dB
Single Mode @ ELED: 15dB 
Bit Error Rate 1 in 1010 or better
Visual Indicators
System PWR A, PWR B, Vcc, Alarm
Optical Signal Status MM RX, MM TX, MM LB, SM RX, SM TX, SM LB, SIGGEN
Dry Contact Normal Open
Diagnostic Functions
Single Mode and Multimode Loopback, Signal Generator, Disable Alarm
Standard 12VDC @ 200mA 
Optional 24VDC, -48VDC, or 115/230VAC (with external power cube)
Operating -10 to 50C
Hi-Temp (optional) -20 to 70C
Storage -40 to 90C
Humidity 95% non-condensing
Physical (Standalone/Wallmount Unit)
Height (3.53 cm) 1.4"
Width (18.14 cm) 7.1"
Depth (16.57 cm) 6.5"
Weight (532 gm) 1.5 lbs.


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