- Explain how the collar collects ephemeris data to accurately determine GPS location (and how customers should respond accordingly)
- Halo Collar
Ephemeris data is the information that the Halo Collar collects from GPS satellites, including their location and timing, which helps to provide accurate GPS readings. The collar aggregates this data over time, so that it continuously improves its tracking precision.
However, the collar can lose its stored ephemeris data in two scenarios:
- Immediately following a firmware upgrade, or
- If the collar is turned off for 5-10 hours or more (we recommend that you leave the collar turned on)
If the collar loses its ephemeris data, the GPS LED will blink Red once every three seconds, and you will get an in-app notification that your GPS needs to be calibrated.
To re-calibrate the GPS:
- Take your collar outside, preferably to an area with an unobstructed view of the sky (not a lot of overhead tree cover or surrounding buildings, etc.)
- Keep the collar outside until the GPS LED starts to blink Blue, signaling an accurate GPS calibration. This process can take as little as a minute or two, but may take longer in some scenarios.
- We recommend that you walk around with the collar during this process, so you can see the Pet Pin adjust to your location on the My Map screen once the GPS is calibrated (if the collar is idle, the Pet Pin will not move, so you can't verify GPS accuracy). That being said, the process will still work even if you simply let the collar sit outside for a few minutes.
- Once the Blue GPS LED starts to flash, your collar has once again begun to collect ephemeris data, and is ready for use.