Fiber Optic Links

AFL - 300 Analog Fiber Optic Link

Actual Size: 61 * 61 * 28mm (Box Only)

  1. AFL - 300 is the right choice when you need to:
  2. Transfer an Analog Signal from a Noisy Environment.
  3. Isolate the Signal from High Voltage Sources.
  4. Eliminate Ground Loops.
  5. Transfer Analog Signals Accurately at High Signal / Noise Ratio.
  6. Have Excellent System Reliability.

By combining Fiber Optic Technology with Advanced Proprietary Hardware, we provide Researchers and Industry with the means to Isolate a Signal from Electrically Hostile Environment, transmit it over upto 1.6km to the Data Acquisition System, while Conditioning the Signal (over 50km using Single-mode Transceivers). This method eliminates the Addition of Noises Generated by Electrical Machinery, Line Noises, Ground Loops and Digital Noise to your Analog Signals. The AFL - 300 Analog Fiber Optic Link is used for transferring Analog Signals over a Fiber Optic Link. This product is also known as “Analog Optical Link” or “Analog Fiber Link”. The unit has optional Interface to 4 - 20mA (or 0 - 20mA) Current Loop Signals. The Input may be 4 - 20mA (or 0 - 20mA) from a Sensor and the Output may be 4 - 20mA to your Controller (or 0 - 10V proportional to the Current Input).

  1. The AFL - 300 Consists of the Following Components:
  2. An Analog Fiber Optic Transmitter: AFL - 300 / Tx
  3. An Analog Fiber Optic Receiver: AFL - 300 / Rx
  4. Upto 3km of Multi-mode Glass Fiber or 50km of Single-mode Fiber (Optional)
  5. Optical Budget with Single Mode Transceivers: 30dB

The Link is Connected between the Signal Source at the Transmitter and the Signal Output at the Receiver

  1. Features:
  2. Excellent Signal Isolation.
  3. Prevents Ground Loops and Computer Noise Effects on your Analog Signals.
  4. Transfers Analog Signals to distances of upto 3km (50km with Single-mode Transceivers).
  5. Linearity: Better than ±0.05%
  6. Low Noise S/N Ratio: 86dB.
  7. Input Signal: Upto ±10 Volt @ DC - 5kHz.
  8. Low Offset Temperature Drift: Better than 100ppm/°C
  9. Very Small Size: Only 61 * 61 * 28mm
  10. Low Cost
  11. Differential Option with 1 - 100 Gain for Low Level Signals and Better Noise Immunity.
  12. 4 - 20mA Current Loop Interface (Optional).
  1. Advantages:
  2. Low Noise Transfer of Analog or Digital Data, particularly beneficial in Electrically Noisy Environments and for Transmission over Long Distance.
  3. For medical Tests: The Patient is Isolated from Data Acquisition System and from any other High Voltage Source.
  4. Optional Instrumentation Amplifier Input Stage provides a Differential Input, with an Adjustable Gain of 10 - 500, for Direct Connection of any Sensor such as: Strain Gage, Piezo, EEG & ECG, Temperature, Humidity, Pressure, etc.
  5. Isolates Delicate Test Equipment from Computer generated Noise and Spikes: Noises from Computer do not return into your System.
  6. Eliminates the Formation of “Ground Loops” (when Two Instruments are Connected to Separate Power Lines or have a difference between their Ground Voltage Potentials).
  7. Total Protection of Signal Processor's Input Stage from Accidental Sensor Malfunction (e.g. Short to Mains Voltage or a Lightning Shock).
  8. Replaces bulky coaxial cables with compact Fiber Optic Cables - especially important when rewiring existing ducts.
  9. Transfers Analog Signals to distances of upto 1.6km - with Very High Accuracy.

Block Diagram
  1. Technical Specifications:

Input/output Range:

±10V Standard; ±1V ±100mV Optional


±0.05% Min.

Frequency Response:

DC to 5kHz (-3dB)

Output Noise:

<1mV ptp (for 1:1 transmission ratio)

Supply Voltage:

12V Regulated, Floating Power Supply

Optical Fiber:

Glass, 62.5/125 micron Dia. Standard (upto 1.6km)
SMA Connector Standard, ST Optional

Transmission Range:

Upto 1.6km Standard;
3km Optional with Multi-mode Fiber

Optical Budget with Single-mode Transceivers:


Dynamic Range:

86dB (±10V Range)

Voltage Isolation

Input to Output:

Infinite Voltage Isolation

Input / Output to Mains:

Standard 800V, Optional upto 2,500V

Battery Operated:

Infinite Voltage

  1. Ordering Information:
  2. The AFL - 300 is Input Single-ended, in 3 Ranges: ±10V (Standard) or ±1V or ±100mV.
  3. Single Ended Input (S) is Standard. Differential Input (D) may be ordered with Input Range of ±10V, ±1V, ±100mV, ±20mV or Adjustable (A).
  4. A Stabilized Power Supply is also required for each side. It can supply Power for upto 5 (optionally 10) Receivers or Transmitters.
  1. Power Supplies:

AFL - 300 - 05: 5 Channel Power Supply
(For one side)

AFL - 300 - 10: 10 Channel Power Supply
(For One Side)

AFL - 300 - BAT
(Battery Operated Power Supply):

Can run upto 5 Channels for upto 10 hours. Includes a 12V / 6.5AH Battery, Charger + Cables. Larger batteries with Higher Capacity are available. (Available in OEM version)

Battery Operated Power Supply
Housed in a Metal Case

  1. Rack Mounting (AFL - 300 Rack):

19″ Rack Front

19″ Rack Back

A Standard 19″ Rack Mounting Case for upto 10 AFL - 300 Units (Receivers or Transmitters)
With ON/OFF Switch and Power Supply / Charger Input

All Specifications are subject to change without a Prior Notice

For any sort of clarifications kindly contact: