Support Note - Nomad - Aquiring a GPS Position Fix - English

"Time to First Fix" is the time required for your Nomad GPS receiver to acquire a position fix. If the Nomad GPS receiver has had a position fix within the last two hours, then it has some knowledge of the current locations of the GPS satellites and will typically only need a few seconds to acquire a new position fix. However, if it has been more than two hours since the GPS radio has had a position fix, then the receiver's knowledge of the satellite locations is stale, and the TTFF can take several minutes or longer to establish, depending on satellite signal-to-noise ratio, number of visible satellites, and a number of other variables.