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Using a Freeze Time Cable

When starting a race using a start wand (for instance, an interval start cross country ski race) you can use a Freeze Time Cable to record the time the start wand is triggered using the timing chips.  This gives you the precision of the start wand, with all the benefits of GoChip: the start wand time will be associated with a racer number, and if there is no network connection at your start line the GoChip will store the start wand time and transmit it when it comes in range of a connected phone.

How Freeze Time works

A GoChip loop is always broadcasting a time.  When a chip crosses the timing loop, it records the time that is being broadcast by the loop.  In normal operation, this is the time of day. 

When the racer triggers the start wand that is connected to the activator by a freeze time cable, the timing loop starts broadcasting the time the start wand was triggered.  Any chip that crosses the timing loop will record the “frozen” time, instead of the actual time.  After ten seconds, the loop returns to broadcasting the actual time of day.

Setting up a Freeze Time Cable

layout diagram of gochip activator, start wand, and timing loop.

Set up a timing loop as normal, approximately 2-3 metres after the start line.  You want to make sure that if you hold a loop checker on the start line, it is not lit up – you don’t want racers times to be recorded while they are still in the start gate, only after they have tripped the start wand.

Then, connect the start gate to the other port on the activator using the freeze time cable.  Our freeze time cables have banana plugs for connecting in to a standard FIS start gate.

a coiled freeze time cable
A freeze time cable.  Note the white connector for interfacing with the GoChip Activator, and the green and black banana plugs for connecting to the start gate.
GoChip activator with freeze time cable and timing loop connected
A freeze time cable (white connector) and timing loop (black connector) connected to the same activator
start wand with freeze time cable and summit timer connected
The freeze time cable connected to a start gate. 
Banana plugs can be chained together as pictured, to allow connecting a primary and backup device to the same start gate.
Updated on December 28, 2018

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