Has any progress been made in the use of optical fibre for start timing cables?

The current FIS timing booklet mentions "Optical Cables: If a converter is necessary between timing cables and optical cables, then the converter must be approved by the FIS."

I read James' response to a similar question several years ago: http://timingguys.com/eve/foru...117044973#7117044973

I understand the technical hurdles, however there are possible solutions.

Does anyone know of converters? Either approved by FIS, or adequate for local fun races?
Original Post
Hi Fred, I'm curious if testing of impulses over fibre might have happened?

Also curious if you've come across a device which can send an impulse over mobile network- I saw one once which wasn't homoligated but good enough for local races, have been trying to track it down.

Hi,  Is it too late for responding ?

I had a discussion last week with D.Defago IT at the FIS headquaeter. 

No optical converter has been approved by FIS at this moment and I guess there won't be any on the future. You would use one optical fiber for each system A and B for timing purpose only (no voice comm on the same fiber).

It would be very expensive to equip a slope with at least 3 fibers (without any intermediate timing) . More , what about a star or finish at different levels .

For all these reasons,  Wengen re equiped its slope with good old wires two years ago.

D.Defago told me optical fiber will never be used for WC races.

Sory for my English.

Philippe Guérindon FFS French Skiing Federation .

Thank you for contributing to the forum! I believe that people are not looking at the best and legal method of using optical fibre. Everyone seems to be focused on transmitting impulses as opposed to data. Why not just adopt the current rules for wireless timing and use fiber instead.

All you need is a serial>udp converter such as a Moxa to take the data from any brand of timer and send it down the fiber to software doing the time calculations. Or you could use a timer such as a CP 545 that has the Ethernet built in. Assign different ports to the timing locations and make it all work.

These converters work happily on DC voltage and it would not be difficult to create a combination battery- carry case- timer in a Pelican or similar plastic case. 

 

 

 

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