914-FOS Optical Card


The 914-FOS card is a 2 x 1 fiber optic switch available in a standard 914-X series credit card size form-factor. When combined with a 914-SPLIT fiber optic splitter, they create a redundant fiber optic path for multiplexer systems and other optical data links.

The 914-FOS is a powered fiber optics card typically installed at the console end of the fiber optic link. It is controlled by either a manual onboard toggle switch or with a TTL compliant input signal. The 914-FOS will select one of the two fiber optic paths or outputs and route all communications to a single fiber.



  • Supports ITU-T G694.2 CWDM wavelengths
  • Manual or TTL controlled fiber optic switch
  • Singlemode or multimode versions available
  • On-board LED indicating active fiber optic link


  • Creates a redundant fiber optic link, improving system reliability
  • Allows remote selection of active fiber
914-FOS Specification
Fiber Type Singlemode (9/125 μm)
Wavelength 1310/1550 nm, ITUT G694.2 CWDM
Return Loss > 40 dB
Insertion Loss < 1.0 dB
Switching Time < 100 ms, including debounce
Power Voltage +4.5 to +13 VDC, regulated
Power Current 0.07 A (typical), 0.09 A (max.)
Power Used 0.25 W (typical), 0.5 W (max.)
Protection Overvoltage, reverse polarity, 1 A timedelay fuse
Switch Control TTL compatible 2.4 V threshold (others available)
LEDs Power (electrical), active fiber
Dimensions 3.5” x 1.6”
Weight < 120 g (0.26 lb)
Optical 2 x ST in (F2, F3), 1 x LC out (F1)
Control and Power 6-pin Wago
Stacking Header PC/104 (for stacking 907 cards only)
Temperature 0°C to +60°C (operational)
-40°C to +85°C (storage)
Humidity 85% RH, non-condensing
Vibration 5 g, 25 - 1000 Hz, 3 axis
Shock 5 g, 25 - 1000 Hz, 3 axes


Technical Support

Telephone:  +1-902-468-2263