MAX-M10M - Integration manual
The message output rate is related to the frequency of an event. For example, the output message
UBX-NAV-PVT (position, velocity, and time solution) is related to the navigation event, which
generates a navigation epoch. In this case, the rate for each navigation epoch is defined by the
configuration keys CFG-RATE-MEAS and CFG-RATE-NAV. For example, a value of 1000 ms in CFG-
RATE-MEAS indicates that a measurement is done every second. If CFG-RATE-NAV is set to one (1),
the solution is calculated for every measurement. This means that a navigation epoch is calculated
every 1000 ms. If the rate is set to two (2), only the second measurement is used and the navigation
epoch is calculated every two seconds. The same result is obtained if CFG-RATE-MEAS is set to
2000 ms, and CFG-RATE-NAV is set to one (1). Every 2000 ms a measurement is done, and in
every measurement, a navigation epoch is calculated. However, this second option demands fewer
resources and is the correct procedure when the navigation rate is changed. Setting a navigation
rate value higher than one (1) is only needed when it is required that the raw measurement data is
output at a higher rate than the navigation data.
The output rate for each message is defined in the CFG-MSGOUT-* configuration group. If
the output rate of the message is set to one (1) on the UART interface, CFG-MSGOUT-
UBX_NAV_PVT_UART1 = 1, the message is output for every navigation epoch. If the rate is set to two
(2), the message is output for every other navigation epoch. If the rate is zero (0), then corresponding
message is not output. As seen in this example, the rates of the output messages are individually
configurable per communication interface.
Some messages, such as UBX-MON-VER, are non-periodic and are only 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 are not output unless the protocol is enabled for output
on the interface. See
Communication interface configuration
2.1.6 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).
UBX-22038241 - R02
2 Receiver configuration
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