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High Speed Self-Healing Ring Multi-Drop Fiber Optic Modem (RS-232/422/485)

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Featuring data rates up to 1 Mbps, the TC2400 Multi Drop Fiber Modem brings maximum reliability to SCADA, Utility & Process Control Self Healing Ring networks.

The TC2400 High Speed Multi-Drop Modem provides 2 separate data & control channels and maximizes the reliability of communication links in Self Healing Ring fiber optic networks. It is often used to interconnect remote RS232, RS422 or RS-485 devices.

  • Async Data Rates to 1 Mbps
  • Sophisticated Tx/Rx Upstream, Downstream Fault Detection
  • Multimode & Single Mode (850/1300/1550nm)
  • Distances up to 100km
  • Single or Dual RS-232, RS-422 or RS-485 Ports
  • Anti-Streaming (Anti-Jabber)
  • Built-In Power Redundancy
  • Local Dry Contact Alarm Relay
  • Rackmount or Standalone


Renowned for its high reliability, the TC2400 High Speed Multi-Drop Modem is ideal for Self-Healing Ring communication links in SCADA, Traffic Control, Industrial Process Control and security networks. It is frequently used to interconnect Remote Terminal Units (RTUs) or Programmable Logic Controllers (PLCs) in Utility substation SCADA Networks.
TC2400 - 'High Speed' Self-Healing Multi-Drop Fiber Optic Modem
Click to enlarge


Data Rates
  1. Async RS-232up to 120 Kbps
  2. Async RS-422/485 "AUX1" portup to 1 Mbps
  3. Async RS-422/485 "AUX2" portup to 256 Kbps
  1. TransmitterLED/ELED/LASER*
  2. ReceiverPIN Diode
  3. Wavelength850/1300nm MM, 1300/1550nm SM
  4. Fiber Optic ConnectorsST {trademark of AT&T}; Optional FC
  5. Loss Budgets * - 850/1300/1550nm
  6. Multimode @ 62.5/125µm15dB
  7. Single Mode @ 9/125µm20dB
  1. ConnectorRJ11 Female
  2. Interface(DCE or DTE) RS-232, RS-422, or RS-485 (2 or 4-wire)
Diagnostic Functions
  1. Local & Remote LoopbackYes
  2. Signal Generator, Disable AlarmYes
  1. Bit Error Rate1 in 109 or Better
Visual Indicators
  1. BRD-1, BRD-2, RSP-1, RSP-2, RxA, RxB, Sync-A, Sync-BYes
  2. Vcc-A, Vcc-B, A2B, B2A, LPA, LPB, PWRA, PWRBYes
  1. Dry ContactNormal OPEN
  1. Standard12VDC @500mA
  2. Optional24VDC, -48VDC, or 115/230VAC w/ Power Cube
  1. Operating-10°C to 50°C
  2. Hi-Temp 1 (optional)-20°C to 70°C
  3. Hi-Temp 2 (optional)-40°C to 70°C
  4. Storage-40°C to 90°C
  5. Humidity95% non-condensing
Physical (Standalone Unit)
  1. Height(3.53 cm) 1.4"
  2. Width(18.13 cm) 7.1"
  3. Depth(24.80 cm) 9.8"
  4. Weight(544 gm) 1.2 lbs
* Contact factory for higher requirements


For more information

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