All 1080 machines have a notion of a zero point, sometimes also known as a calibration point. This is the position
where the machine will stop retracting the line.
1080 Quantum and 1080 Sprint will set the zero point when you connect the 1080 Software via bluetooth to them.
Newer 1080 Sprint 2 machines will set the zero point when turned on (without having to connect any external software).
Choosing a Zero Position
It's important that the zero position is set in such a way that the rep never enters the "no pull zone". The exact size
of the safety zone depends on the exercise.
Reps
Usually a safety zone of 10-15 cm is enough.
Resisted sprinting
The safety zone should be at least 1m wide. This is to ensure that the line is fully tensioned before the run starts
Assisted sprinting
The safety zone need to be wide enough to allow the runner to slow down before reaching the zero position.
The exact length depends on several factors, including how fast and how far you run but also things like the surface material and type of sport.
-
30 mslow down zone suggested following high speed actions (max to overspeed). -
10-20 mslow down zone is suggested following moderate to lower speed actions (short, assisted accelerations)
Calibrating a new Zero Position
With a machine connected, select Set Zero Position from the machine menu:
A dialog will appear where you have to confirm that it is safe to change the loads and speed limits needed by the
calibration sequence:
Concentric & Eccentric Load: 3 kg
Eccentric Speed Limit: 0.3 m/s
Before proceeding, make sure nobody us actively training with the machine.
Note: If the machine is in Park (0 kg load), no confirmation dialog is shown since it is not needed.
After confirming the settings, the calibration dialog is shown showing the current position.
Now pull the line to the desired new zero position and press Confirm Calibration. Once confirmed, the machine will restore the machine
settings to their previous values (loads, mode, speed limit).
It's also possible to cancel the calibration. This means that no new zero position gets set.