SERA Hare Scrambles Scoring Information

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SERA Hare Scrambles Scoring Information

• Answers to these questions
• How does SERA score Hare Scrambles?
• What is a transponder?
• How do I carry the transponder?
• How much does the transponder it cost?
• What are the SERA numbers?
• Other important information.

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How does SERA score Hare Scrambles?
Answer SERA is now using RFID (Radio Frequency
Identification). The system is custom software
run on a PC that reads transponder information
when the rider enters the scoring tent. The PC
turns the off the RED stop light and turns on the
GREEN light for 0.8 seconds. The PC also
calculates the riders position in the class and
displays the riders number and position on a
sign.
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Scoring Tent
RF field
Sign with number and position
Rider entry
RFID Antenna
Top view (birds eye)
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What is a transponder?
Simple Answer The electronic doo-hickey that
carries the riders number. It looks like a
plastic cigar case. Better Answer A transponder
is an electronic device that carries a number.
We use the number to identify the rider. The
transponder does not have a battery. When the
rider enters the antenna RF field the transponder
charges up and sends the number internal to the
transponder to the PC. The transponder must be
within the RF field for 0.1 seconds. It then can
send the number to the RFID reader. This all
takes about 0.2 seconds. The computer then
processes the data and turns the light green and
puts the rider number and position within his
class on the sign.
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How do I carry a transponder?
The best place to carry the transponder is on the
front/center of your chest protector. The
transponder must not be covered by any metal.
You may cover the transpoder with tape, cloth or
other non-metallic items. The suggested method to
attach the transponder to the chest protector is
with zip ties. The scoring team can then still
read your number in case the transponder
fails. Please put your transponder number on
your left number plate as a minimum. It is
suggested that you place the number on all number
plates. SERA will still issue a bar coded number
for the left front of your helmet. The system
has the capability to read bar codes,
transponders and manual entry.
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How much does the transponder cost?
Answer The transponder cost the rider 15. If
you do not wish to keep the transponder, then
return it to the sign up area after the race and
you will receive 10. The transponder can be
reprogrammed at any time. If you change classes
then the transponder must be reprogrammed for
your new class. The transponder does not wear
out. You only need to buy one.
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SERA numbers
Class No. Range Class No. Range AA
Expert 1-49 Senior 400-499 201-Open A
50-99 Super Senior 700-799 86-200 A
100-149 201-Open C 1200-1399 Veteran A
150-199 86-200 C 100-1199 201-Open
B 200-299 Junior 550-599 86-200
B 500-549 Beginner 1400-1599 Veteran
B 300-399 Masters 600-699
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Important Information
1. The rider MUST wait for the light to turn
green before leaving the scoring tent. 2. The
scoring tent has steel fence posts protecting the
tent and workers. If you hit the posts they
hurt, if you hit the workers, they might hit
back. 3. The sign position is only for reference.
The printed results at the end of the race are
the only official results. 4. All scoring related
issues must be resolved during the protest period.