Power Modes - Ublox EVK-M101 User Manual

Figure 13: EVK-M101/C receiver internal LNA mode configuration

8.5 Power modes

EVK-M101/C supports the following power modes and can be configured with the CFG-PM-
OPERATEMODE configuration key.
• Continuous mode (FULL): This is the full power mode and the default mode of the receiver. No
power save mode is active in this mode.
• On/Off mode (PSMOO): This is a power save mode for reducing the power consumption of
the receiver. In this mode, the receiver is configured to be periodically turned on or off for
applications that require less frequent position updates. Typically used for update periods
longer than 10 seconds.
• Cyclic tracking mode (PSMCT): This is also a power save mode for applications that require
more frequent position updates. Typically used for short update periods in the range of 0.5 to
10 seconds. In this mode, the receiver does not shut down completely between position fixes,
but uses low-power tracking instead.
BeiDou B1C is not supported in power save mode (PSM). Some PSM states clear the RAM
memory. Store receiver configuration in BBR to maintain the settings. In addition, it is
recommended to disable SBAS because the receiver is unable to download or process any
SBAS data in PSM.
Figure 14 shows the configuration window for selecting the receiver power mode and configuring
the position update period. For the On/Off power mode, the position update period is defined with
the CFG-PM-POSUPDATEPERIOD configuration key and must be saved in RAM and BBR layers or
permanently in the Flash layer. This way, the configuration is maintained afer the receiver wakes up
from the inactive state.
The CFG-PM-OPERATEMODE configuration is applied last after other required power mode
configuration items are defined in the CFG-PM group.
UBX-21003949 - R04
C1-Public
8 Device configuration
EVK-M101, EVK-M101C - User guide
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