The Falcon and GCHawk are ceiling-mounted launch monitors that rely on camera calibration to accurately track balls (and clubs, if club mode is enabled).
Recalibration may be required if:
The device fails to lock or intermittently loses lock
Launch or club data is missing or inconsistent
The device was serviced, repositioned, or remounted
The hitting area or turf surface has changed
On your PC, open File Explorer.
In the address bar, type:
%AppData%and press Enter.
In the Roaming folder, click the up arrow once to go up one level.
Open LocalLow → ForesightSports → ForesightOverheadCalibration → GCHawkSetup.
Delete all .json files in this folder (examples: WandSamples.json, config.json).
Empty your Recycle Bin to complete the removal.
Download the latest Overhead Calibration Tool from our support site (Link: Falcon or GCHawk)
Launch the tool and follow the on-screen prompts.
Before starting calibration, make sure your hitting area is clear of reflective objects and lighting is consistent.
Using the calibration wand, move it through the requested positions/motions within the hitting area as directed by the tool. Keep the wand visible to the cameras and move at a steady pace.
Let the tool run to completion and save the new calibration.
Restart the device.
After restart, test ball/club tracking to confirm lock and accuracy are restored.
Q: When should I recalibrate my overhead device?
After service, relocation, hitting-area changes, or if you notice frequent lock loss or inaccurate readings.
Q: What happens if I don’t delete old calibration files first?
The new calibration may not apply correctly, leading to inconsistent data.
Q: Does Falcon use a different tool than GCHawk?
No. Both devices use the same calibration process and tool.
Q: Can I recalibrate if I only moved my mat a few inches?
Yes. Even small placement changes can impact calibration.
Still need help?
Submit a Request if you have not already!