Freestyle Timing Booklet

From Fiswiki

Jump to: navigation, search



[edit] Timing Devices

All timing devices used must be homologated as per the list page 17. Races using devices not mentioned on that list will not be considered for FIS points.

For all international competitions, FIS World Cup, FIS Continental Cups and FIS competitions, two synchronized electronically isolated timing systems operating in Time-of-Day must be used.

One system will be designated System A (Main system), the other System B (Back Up System) prior to the beginning of the race.

[edit] Single Moguls and Ski Cross Qualification

All time of day times must be immediately and automatically sequentially recorded on printed strips to at least the 1/1000th (0.001) precision. Both systems must allow for the calculation of net times by the mathematical comparison of each racer’s start time to finish time. The final result for each skier’s run is then expressed to 1/100th (0.01) precision by truncating the calculated net time on course.

[edit] Dual Moguls

Both systems must allow for the calculation of difference times by the mathematical comparison of the time of day of each impulse from the red and blue course. The result then shows the winning course and difference time expressed to 1/100th (0.01) precision.

[edit] Aerial Speed Trap

A single electronic timing system used for information purposes only. The system must be able to calculate the speed based on the time taken to travel over a set distance of 3 metres. A backup system is not required.

All times used for the final result must be from System A. If there is a failure of System A, a calculated net time from System B must be used following the same procedure as set out in the “Hand Timing” section later in this booklet. It is not permitted to substitute Time-of-Day times from System B for use with System A for the purpose of net time calculations.

For all events, System A must be connected to its respective photocells by hard wire connection. System B must be connected to another set of photocells by a separate pair of wires.

When the official printing timer allows manual input or correction of a time, some type of indication (star, asterisk or other)concerning any effected change must be printed on all timing documentation.

Refer to the diagram for more details regarding wiring and equipment needed.

All timing equipment and technical installation should be set up or protected in such a way that danger to the competitors is avoided where possible.

[edit] Photocells

For all events, there must be two photocell systems approved for use by the FIS installed at the start and finish line. One is connected to System A (Main), the other, connected to System B (Backup).

Location of start and finish cells to be determined in co-ordination with the Technical Delegate and/or the Jury.

Start cells to be placed squarely across the course within 1.0 – 1.5 metres downhill of the starting line.

Finish cells to be located squarely across course in line with the finish.

The snow is to be leveled (i.e. moguls removed) for a distance of 3 meters uphill of the finish line to avoid competitors jumping over the photocell’s beam.

Main and backup photocells to be secured to the same post at a height of 1.00 metre for the main and 0.80 metre for the backup at the start and 0.50 for the main and 0.30 for the backup at the finish.

Timing posts to be cut 2/3 through, below the snow, so as to shear off in the event of being skied into. Spare posts should be prepared in case of breakage.

Photocells must be connected to the timing devices by wire. No radio transmission is allowed.

There are two categories of cells:

  • Reflector Type: Both transmitter and receiver are on the same side and use a reflector on the other side. These photocells usually operate up to a maximum range of 25 meters.
  • Transmitter-Receiver Type: Transmitters can either be on opposite sides or on the same side, depending on the manufacturer's specifications. These type of photocells typically operate over a greater distance than the reflector type (up to 150 meters)

[edit] Voice Communication

In all international competitions, there must be multiple communications (i.e. Hard wire headsets, telephone or radios, etc.) between the start and finish. Voice communication between starter and finish must be assured by fixed wire connection or radio. In case of radio, this must be on a separate channel from that used by any other function of the OC.

In Olympic Winter Games, FIS World Championships and World Cup the communications between start and finish must be assured by fixed wiring.

Timing impulse and voice communication functions must be separated on different wire pairs if manufacturer’s specifications dictate.

[edit] Timing Cables

Cables should be routed so as to prevent damage by skier traffic or tampering of by any spectators next to the course.

[edit] Display Board

A timing display board or scoreboard must be provided showing the running time in seconds during the run and the net time to 1/100th second once the competitor has crossed the finish line.

The display board or scoreboard to be located in a position visible from the judges stand and public so as to communicate the time recorded by the main timing system.

[edit] During the competition

Timing of the finish With electronic timing, the time is taken when any part of a competitor crosses the finish line and triggers the beam between the photocells.

In case of a fall at the finish, the time can be taken without both of the competitor’s feet having crossed the finish line.

With hand timing the time will be taken when any part of the competitor crosses the finish line.

If a competitor fails to finish or stops for more than 10 seconds, the Head Judge may declare that the competitor will be scored up to that point. At that time the display of the running time on the display board can be cleared. And as far as the timing is concerned may be recorded as a DNF.

[edit] Timing problems

In case of timing problems, the Chief of Timing must inform members of the jury and the Chief of Scoring immediately.

In the case of a failure of the main electronic timing system (System A), the results of the electronic back-up system (System B) will be valid after applying a correction factor. In the case that calculated net times from either System A or System B are not available for a competitor, the calculated net Hand Time will be considered valid after a correction factor has been applied.

Calculation of the Correction factor Calculate the difference between the net backup times or net hand times and the main electronic net times of the 3 competitors starting before the missing time.

The average of the 3 time differences (Correction Factor) is then added to the backup or hand time of the competitor without a main electronic time.

[edit] Following the competition

At the end of the competition, it is compulsory to give the Chief of Scoring the enclosed "Timing Report Form", as well as the printed tapes from the System A, System B and all Hand Timing Protocols.

These reports will be passed on to the head judge and kept with the judge’s cards for the event. They will be kept until the official approval of the competition or after any appeal dealing with timing or race results.

A Technical Timing Report Form as prescribed by the FIS must accompany the results and must be reviewed and signed by the Chief of Timing and reviewed and signed by the TD or Chief of Scoring.

All printed records from System A, System B and Hand Timing Protocol must be retained by the OC for a period of (1) month after the competition in case of any appeal dealing with timing or race results.

[edit] Television Graphics

A professional quality video timing signal synchronized to the main official timing system must be provided for World Championships and Olympic Winter Games by the timing company showing the running time in 1/10th seconds during the run and the net time to 1/100th second once the competitor has crossed the finish line.

[edit] Manual hand timing

In all cases hand timing is compulsory.

Manual (Hand) Timing, completely separate and independent of the Electronic Timing, must be used for all competitions listed in the FIS calendar. Stopwatches or and-held battery operated timers that are installed at both the start and the finish and capable of expressing time of day times to 1/10th (0.1) or 1/100th (0.01) precision qualify as proper hand timing devices.

They must be synchronized prior to the start of each run, preferably with the same Time-of-Day as System A and System B. Printed records, either automatic or handwritten of recorded hand times must be immediately available at the start and at the finish.

Stopwatches, with or without printers, should be synchronised to the time of day and used at the start and at the finish.

A complete list of hand times recorded at the start and the finish must be given to the Chief of Scoring at the end of each run, or immediately upon request.

Following the start of each forerunner and each competitor the start hand time will be communicated to the operator of the System B (Backup) and recorded.

After each forerunner and each competitor crosses the finish line, the hand time at the finish point will also be communicated and the net time will be calculated and recorded for both System B (Backup) and hand timing using the Hand Timing Protocol shown on Page 14.

An on-going recording and calculation process will continue for the entire event.

[edit] Synchronisation

All elements of the timing installation, must be installed, tested and be in good working order at least one hour before the beginning of the competition. Timers should be turned on 30 minutes before synchronisation to allow the quartz time bases to stabilise.

Synchronisation must be done 30 minutes prior to the start of each run and must not be re-synchronised while the run is in progress.

The synchronisation impulse for all timers must come from the start beam. One minute after synchronisation is done, a new impulse must be sent by the start beam to check synchronisation accuracy on Systems A and B.

Should any important discrepancies be observed when this check is performed, synchronisation should be redone and checked again prior to the start of the run.

Manual stopwatch synchronisation must be done before or together with the synchronisation of the whole system.

[edit] WC, WSC, OWG Single Moguls and Ski Cross Qualification Timing Plan

Image:WC, WSC, OWG Single Moguls and Ski Cross Qualification Timing Plan.PNG

[edit] Single Moguls and Ski Cross Qualification Timing Plan

Image:Single Moguls and Ski Cross Qualification Timing Plan.PNG

[edit] FIS Freestyle - Ski Cross Final Timing Plan

Image:FIS Freestyle - Ski Cross Final Timing Plan.PNG

[edit] FIS Freestyle Aerial Speed Trap


Return to Freestyle Skiing or see Timing Glossary, Data Service Requirements World Cup

Personal tools