It's possible that the current date is updated in nonvolatile memory in the GPS module. There are other ways to handle the problem. In other words the error could happen at almost any time. If that is what is done then a rollover error would occur ~19 years after whatever that date is. One method would be to include the manufacture date in the GPS firmware. It depends upon how the GPS receiver handles the potential for an error. Thinking about this some more it occurs to me that the Aprollover date isn't the only time that an error could occur.
I could not determine who actually manufactured the GPS module or when it was manufactured but, hey, it worked. I plugged one in and watched the NMEA messages during the rollover period. I have a couple of inexpensive ($16) GPS modules that I bought for hobby purposes. Posts: 737 Joined: Tue 28 Oct, 2014 5:31 pm Region: Other Country Gender: Male I will have to remember to check my older units, those that might already have been through the first epoch without me noticing. That said, most newer handheld GPS units will not be affected. For those devices affected, the positioning accuracy will not be affected, only the incorrect date/time stamps in track logs and for computing sunrise/sunset.įor their aviation devices, Garmin had previously already rolled out a service advisory 1905 in January that informed that there were no issues with Garmin aviation devices as a result of the Apdate rollover.Īnd if you have your Tomtom automotive GPS, check it here with the serial number This is for their consumer devices and they state that for the majority of their devices the date rollover will not negatively impact the devices. For those concerned, Garmin's response is here.
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