Digital/Contact Closure Fiber Optic Link AFL-160
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AFL-160 Digital/Dry contact closure Fiber Optic Link


Actual Size: TX:75 x 60 x 23mm, RX:115 x 90 x 23mm (box only)
Price starts from $936.- per pair (Transmitter and receiver units, TTL I/O), basic configuration, Multi-Mode.

When you need to:
point   Transfer 16 Digital Control signals from a noisy environment,
point   Isolate digital signal from high voltage sources,
point   Control systems over a long distance,
point   Reduce wiring costs,
point   Get rid of interferences and spikes
point   Get fast and accurate response to your control signals,

The AFL-160 digital/Dry contact fiber optic link Can tranmit 16 Contact closures or 16 TTL signals over a long range at a 93 KHz update speed.

The AFL-160 was primarily designed for industrial and control application. The product is sampling the 16 Digital TTL input at a rate of 93 KHz. simultaneously and transmit all control signals to 16 digital outputs. Those outputs are available as 16 Form C relay contacts or as 16 TTL compatible outputs (0-5V or 0-3.3V). A "LINK" led and relay contacts enables the user to know if the link was disconnected and take any precautions needed to halt the system.
Input sampling and output updates may be synchronized to external circuits or controllers by using the "SAMPLE" pin at the Transmitter or at the Receiver.

The AFL-160 consists of the following components:
point   A digital input Fiber Optic Transmitter - AFL-160/TX,
with TTL compatible inputs.

point   A digital Fiber Optic Fiber Optic Receiver - AFL-160/RX,
This unit can be configured with Dry contacts (1 change-over per TTL input)
or with TTL outputs.
point   Up to 3 km of Multi-mode glass fiber or 50 Km of Single-mode fiber (optional).
Optical budget with Single Mode transceivers: 30 dB

point   2 power supplies of 12V - one for each side.
point   Can be modified to 24V supplies + DIN rail holder for DIN rail mounting.

The link is connected between the TTL inputs at the transmitter , and the Relay contact outputs at the receiver.

Block AFL-160

point   Excellent signal isolation.Prevents ground loops and computer spikes.
point   Very fast response - up to 100 uSec at TTL version, 1-2mSec @ contact closure version.
point   Transfers digital control signals to distances of up to 1.6 Km (50Km with Single Mode transceivers)
point   Input signal: 0-5V @ DC-20 KHz.
point   2 Versions available: TTL outputs or Contact Closures

point   Very small size: TX: 75 x 60 x 23mm, RX: 115 x 90 x 23mm
point   Low cost: from $936.- per pair (Rx + Tx units for only $936).
point   Relay ON/Off time: Hold- 2mSec, Release- 0.9mSec (average)
point   TTL output On/Off time: 50nSec (rise or fall time)
point   TTL output update rate: 93 KHz.
point   Form C contacts - Can be connected as Normally Open or Normally Closed .

point   Low noise transfer of 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 Single mode transmitter and receiver allows 30dB optical budget for longer range.
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 lightning, High Voltage spikes etc.
point  Replaces bulky multi-wire cables with compact fiber optic cable - especially important when rewiring existing ducts .

Technical Specifications
point  Input Range: 0-5V related to TX common ground.
point  Output contacts: Normally open, Common, Normally Closed.
Each relay is isolated from the others.
point  Contacts rating:
30VDC @ 1A
Form C contacts (Common, Normally Open, Normally Closed)

point  Frequency Response: DC to 20 KHz .
point  Timing jitter: 10.5 microseconds maximum
point  Supply Voltage: 12 V
regulated, floating power supply.
point  Optical Fiber: Glass, 62.5/125 micron dia. Standard (up to 3 Km),
ST connector standard, SMA 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  5V output terminal current: Up to 100 mA .
point  Relay ON/Off time: Hold- 2mSec, Release- 0.9mSec (average)
point  Voltage Isolation:
- Input to Output - infinite voltage isolation,
- Input/ Output to Mains - standard 800V, Optional up to 2500 V,
- Battery operated - infinite voltage.

point  Relay to Relay isolation voltage: 800V maximum.

Both, the receiver and the transmitter
are ready for wall mounting.



DIN rail holders + converters for 24Vdc power input are available.

DIN rail holders

Ordering Information

The AFL-160 may be ordered with Single-Mode or Multi-Mode receivers and transmitters.
Single mode transmitters work in a different wavelength than Multi-mode transmitters and they cannot be combined!
point  Each side needs a separate power supply or battery. All units, on the same side, which share the same common ground, may use the same power supply
point  A stabilized power supply may supply power for up to 5 (optionally 10) receivers or transmitters (with 16 I/O lines each)

AFL-160 - TT - REL - MM - R

point TT = TTL Input voltage range(0-5V).
point REL = Relay Outputs(standard). TT = TTL outputs.
MM= Multi-Mode Transceivers. SM = Single Mode Transceivers

point  R = Range in meter

AFL-160 - O3
point  Power supply for 3 links (for one side - 3 Transmitters or 3 receivers or mixed)


point Power supply for powering up to 10 units(for one side, Receivers or Transmitters)
Linear Power supplies are also available.


Battery operated power supply:
Can run up to 4 Rx or Tx units for up to 10 hours.
Includes a 12 V/ 6.5 AH battery, charger + cables.
Available in OEM version:

Battery + Charger OEM

Or housed in metal case:
Battery + Charger metal case


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

Analog Fiber Optic Links

The following options are available:
* DIN rail holders
* Internal converters for 24Vdc power input
* Singlemode optics (instead of Multi-Mode)
* Custom assembled mixed units - TTL +
Contact closures in one board.
* 110VDC power supplies (usually for flamabe environment)
* Power splitters - allows sharing of power supplies for few modules.

Download Datasheet Download PDF file


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.