Internal Lna Mode Configuration - Ublox EVK-M101 User Manual

Increase the communication baud rate and reduce the number of messages that are
enabled when high navigation update rates are used. The maximum baud rate of 921600 or
460800 baud rate should be sufficient for most use cases.
Figure 12: EVK-M101/C receiver navigation update rate configuration
8.4 Internal LNA mode configuration
The u-blox M10 receiver provides the following internal LNA modes for optimizing the receiver
performance and power consumption based on the available external gain from the selected RF
front-end and active antenna. The appropriate LNA mode can be configured with the CFG-HW-
RF_LNA_MODE configuration key as shown in
• NORMAL: The internal LNA of the receiver is configured to high-gain mode. Due to the external
LNA on the RF path of the EVK, this mode is not recommended to be used on the EVK.
• LOWGAIN: The internal LNA of the receiver is configured to low-gain mode. This mode can be
used on the EVK with a passive or an active antenna. This mode is also suitable when a GNSS
simulator is connected to the EVK. This is the default mode on EVK-M101/C.
• BYPASS: The internal LNA of the receiver is bypassed. Consider using this mode to save power
if an active antenna with high gain is used like the antenna included in the EVK package.
Changing the internal LNA mode requires a reset or power-cycle of the receiver for the new
configuration to take effect. The reset can be done by pressing the RST button on the EVK
front panel if the configuration is saved in Flash. Otherwise, power-cycle the receiver if the
configuration is saved to BBR.
UBX-21003949 - R04
C1-Public
Figure
8 Device configuration
EVK-M101, EVK-M101C - User guide
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