On December 31st, 2016, just before midnight, a positive leap second was inserted into the Coordinated Universal Time (UTC). This leap second added to GLONASS may have introduced disruption at the exact moment. Arrow Series™ receivers affected (e.g., Arrow 200, Arrow Gold) will automatically update a new almanac.
For iOS and Bluetooth™ to be useful together, an accessory (like the high-accuracy Arrow GNSS receiver) and a device (e.g., a tablet) must support in common one of Bluetooth's standard profiles. A Bluetooth headset, for instances, would use HeadSet Profile (HSP).
Atlas™ is a worldwide GNSS differential correction service, offering the most innovative base station-free corrections via L-Band satellites at accuracies ranging from meter level to a few centimeters. The Eos Arrow 200 GNSS provides worldwide decimeter positioning to your device.