Analog Fiber Optic Link AFL-300
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Actual Size: 61 x 61 x 28mm (box only)
Price starts from $794.- per pair (Transmitter and receiver units), basic +/-10V configuration, Multi-Mode.

When you need:
point   To transfer an analog signal from a noisy environment,
point   To isolate the signal from high voltage sources,
point   Eliminate ground loops,
point   Transfer Analog signals Accurately at high Signal/Noise Ratio,
point   Have excellent system reliability,
The AFL-300 is the answer.

By combining fiber optic technology with advanced proprietary hardware, A. A. Lab Systems provides researchers and industry with the means to isolate a signal from electrically hostile environment, transmit it over up to 1.6 km 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 4-20 mA (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).

The AFL-300 consists of the following components:
point   An Analog Fiber Optic Transmitter - AFL-300/TX,
point   An Analog Fiber Optic Receiver - AFL-300/RX,
point   Up to 3 km of of Multi-mode glass fiber or 50 Km of Single-mode fiber (optional).
Optical budget with Single Mode transceivers: 30 dB

The link is connected between the signal source at the transmitter (see Figure 1), and the signal output at the receiver.

Block AFL-300

point   Excellent signal isolation.
point   Prevents ground loops and computer noise effects on your Analog Signals.
point   Transfers analog signals to distances of up to 3 Km (50Km with Single Mode transceivers)
point   Linearity: better than +/-0.05%.
point   Low noise; S/N ratio: 86 dB.
point   Input signal: Up to ±10 Volt @ DC-5 KHz.
point   Low Offset Temperature Drift: Better than 100 ppm/deg.C

point   Very small size: only 61 x 61 x 28 mm
point   Low cost: $794.- per pair (Rx + Tx).
point   Differential Option with 1-100 gain for low level signals and better noise immunity.
point   4-20 mA current loop interface (optional) .
point   Can work under Ionizing radiation (Nuclear applications)

point   Low noise transfer of analog or digital data , particularly beneficial in electrically noisy environments and for transmission over long distance.
point  For medical tests: the patient is isolated from data acquisition system and from any other high voltage source.
point  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.
point  Isolates delicate test equipment from computer-generated noise and spikes: noises from computer do not return into your system.
point  Eliminates the formation of "ground loops" (when two instruments are connected to separate power lines or have a difference between their ground voltage potentials).
point  Total protection of signal processor's input stage from accidental sensor malfunction (e.g. short to mains voltage or a lightning shock).
point  Replaces bulky coaxial cables with compact fiber optic cables - especially important when rewiring existing ducts.
point  Transfers analog signals to distances of up to 1.6 km - with very high accuracy.

Technical Specifications
point  Input/output Range: ±10 V standard; ±1 V ±100 mV optional.
point  Linearity: +/-0.05% min.
point  Frequency Response: DC to 5 KHz (-3 dB).
point  Output Noise: < 1 mV ptp (for 1:1 transmission ratio).
point  Supply Voltage: 12 V regulated, floating power supply.Can be modified to 24Vdc.
point  Optical Fiber: Glass, 62.5/125 micron dia. Standard (up to 1.6 Km), SMA connector standard, ST optional
point  Transmission Range:
- Up to 1.6 Km standard, 3Km optional with multi-mode fiber
Optical budget with Single Mode transceivers: 30 dB .
point  Dynamic Range: 86 dB (±10 V range).
point  Voltage Isolation:
- Input to Output - infinite voltage isolation,
- Input/Output to Mains - standard 800V, Optional up to 2500 V,
- Battery operated - infinite voltage.
Can work under Ionizing radiation (Nuclear applications)

Download AFL-300 Datasheet PDF

Sample Application: Battery operationApplication

Ordering Information
point  The AFL-300 is input single-ended, in 3 ranges:
±10 V (standard) or ±1 V or ±100 mV.
point  Single ended input (S) is standard. Differential input (D) may be ordered with input range of ±10 V, ±1 V, ±100 mV, ±20 mV or adjustable (A).
point  A stabilized power supply is also required for each side. It can supply power for up to 5 (optionally 10) receivers or transmitters.

Supply can be modified to 24Vdc.

AFL-300 - 1V - 10V - S - R

point 1 V = Input voltage range(10V is standard).
point 10 V = Output voltage range(standard).
point  S = Single Ended(D=Differential is optional).

point  R = Range in meter
point  SM = Single Mode Transceivers

Current loop (4-20mA or 0-20mA) interface is available. Please contact factory.

AFL-300 - O5
point  5 channel power supply (for one side)


AFL - 300 - 10
point 10 channel power supply (for one side)


Battery operated power supply:
Can run up to 5 channels for up to 10 hours.
Includes a 12 V/ 6.5 AH battery, charger + cables.
Larger batteries with higher capacity are available.
Available in OEM version:

Battery + Charger OEM

Or housed in a metal case:
Battery + Charger metal case

Rack Mounting:AFL-300-RACK

A standard 19" rack mounting case for up to 10 AFL-300 units ( receivers or transmitters) with ON/OFF switch and power supply / charger input.

Front View

Rear View

For more information about other Analog/Digital fiber optic links click here.

Analog Fiber Optic Links


A.A. Lab-Systems
Head Office: 33 Hayetzira St., Ramat-Gan 52521, ISRAEL.Tel: 972-3-5756327, Fax: 972-3-5756326
USA office: 9 Blossom drive, Kennett Square, PA19348.  Tel: (302)478-2881 Fax: (610)444-5544
© Copyright 2006, A.A.Lab Systems Ltd.