CAM-M8 - Data Sheet
1.18.2 Power Mode Setup
u-blox M8 modules can be configured to run in either continuous or a choice of Power Save mode
configurations. A template of power mode settings can be used to easily select typical power mode
setups to cover the majority of users’ requirements.
For specific power saving applications the user has the option to fully configure via the power save
mode configuration. For more information, see section 1.18.2.2.
The u-blox M8 modules’ power mode setup offers a choice of continuous operation and preset Power
Save Mode Configurations.
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Continuous (default) mode for best GNSS performance vs power consumption
Continuous with no compromise in power consumption
A 1 Hz cyclic tracking mode for aggressive power reduction
Choice of 2 or 4 Hz 9 cyclic tracking modes for typical wearable applications
ON/OFF interval mode
1.18.2.1 Continuous Mode
Continuous Mode uses the acquisition engine at full performance resulting in the shortest possible
TTFF and the highest sensitivity. It searches for all possible satellites until the almanac is completely
downloaded. The receiver then switches to the tracking engine to lower power consumption.
Thus, a lower tracking current consumption level will be achieved when:
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A valid GNSS position is obtained
The entire almanac has been downloaded
The ephemeris for each satellite in view is valid
1.18.2.2 Power Save Mode
For specific power saving applications outside the typical preset power mode setups, users can
configure a tailored Power Save Mode.
Power Save Mode provides two dedicated methods, ON/OFF and Cyclic tracking, that reduce average
current consumption in different ways to match the needs of the specific application. These
operations can be set by using a specific UBX message.
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For more information about power management strategies, see the u-blox 8 / u-blox M8 Receiver
Description Including Protocol Specification [2].
9
Single GNSS constellation configuration only
UBX-15031574 - R04
Production Information
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