Huahuan Electronics HX.PTP-GM02, Руководство пользователя

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Beijing Huahuan Electronics Co., Ltd
Figure 6-3 Upgrade interface
WARNING: the process will take quite some time to complete, DO NOT
INTERUPT THE POWER SUPPLY DURING UPGRADE! The system will
reboot after successful upgrade.
6.1.4. Configuring the Time Mode
HX.PTP-GM02 can operate under two different time modes, i.e. ‘3D Search’
mode and ‘Fixed’ mode. Although the device is designed to provide time
reference rather than navigation, the absolute position and the time are tightly
coupled variables.
When GeckoSynco is set to 3D Search mode, it constantly solves the
function set for four variables of 3D coordinates and time, according to received
satellite signals. Due to variations in environmental conditions and thermosphere,
and multi-path reflections that change with the relative positions to the moving
satellites, uncertainty in both 3D coordinates and time will also vary temporally.
This hampers the performance of the device in terms of time accuracy.
On the other hand, if the accurate 3D data are available, the GeckoSynco
may operate in ‘Fixed’ mode, with only one variable of time needs to be resolved.
This reduces calculation uncertainty, makes the device less vulnerable to
variations and interferences, and timing accuracy is improved.
Unless the device is mounted on a mobile platform, the 3D position of the
HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0 25