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MAX-M10M - Integration manual
Some messages, such as UBX-MON-VER, are non-periodic and will only be output as an answer to
a poll request.
The UBX-INF-* and NMEA-Standard-TXT information messages are non-periodic output messages
that do not have a message rate configuration. Instead they can be enabled for each communication
interface via the CFG-INFMSG-* configuration group.
All message output is additionally subject to the protocol configuration of the
communication interfaces. Messages of a given protocol will not be output unless the
protocol is enabled for output on the interface. See
Communication interface configuration
for details.
2.1.1.6 Antenna supervisor configuration
This section gives an overview of the antenna supervisor configuration keys. The implementation of
the antenna supervisor and a detailed description can be found in
.
The antenna supervisor is used to control an active antenna. The configuration of the antenna
supervisor allows the following:
• Control voltage supply to the antenna, which allows the antenna supervisor to cut power to the
antenna in the event of a short circuit or optimize power to the antenna in power save modes.
• Detect a short circuit in the antenna and automatically recover the antenna supply after the
short circuit is no longer present.
• Detect an open circuit, which can be used to indicate if the antenna has been disconnected.
Using some antenna supervisor features may require disabling the UART or I2C interface
and reconfiguring the PIOs as antenna supervisor pins.
describes the configuration items.
Configuration item
Description
Comments
CFG-HW-ANT_CFG_VOLTCTRL
Enable active antenna voltage control
CFG-HW-ANT_CFG_SHORTDET
Enable short circuit detection
CFG-HW-ANT_CFG_SHORTDET_POL Short antenna detection polarity
Set to 1 if the required logic polarity is
active-low (default).
CFG-HW-ANT_CFG_OPENDET
Enable open circuit detection
CFG-HW-ANT_CFG_OPENDET_POL
Open antenna detection polarity
Set to 1 if the required logic polarity is
active-low (default).
CFG-HW-ANT_CFG_PWRDOWN
Power down antenna supply if short
circuit is detected
Requires CFG-HW-
ANT_CFG_VOLTCTRL and CFG-HW-
ANT_CFG_SHORTDET to be enabled.
CFG-HW-ANT_CFG_PWRDOWN_POL Power down antenna logic polarity
Set to 1 if the required logic polarity is
active-high (default).
CFG-HW-ANT_CFG_RECOVER
Enable auto-recovery in the event of a
short circuit
To use this feature, enable short
circuit detection and CFG-HW-
ANT_CFG_PWRDOWN.
CFG-HW-ANT_SUP_SWITCH_PIN
PIO number of the pin used for switching
antenna supply
PIO5 is recommended if available. This
pin can be used as an LNA_EN signal
to control an external LNA, especially
if software standby mode or power
save mode on/off (PSMOO) operation is
used.
CFG-HW-ANT_SUP_SHORT_PIN
PIO number of the pin used for detecting
a short circuit in the antenna supply
UART or I2C pins can be used for the
short detection, depending on which
interface is used for communication.
UBX-22038241 - R01
2 Receiver functionality
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