AirLink OS gives you options for managing router power usage, depending on your application and hardware configuration. For example, you can use the settings at System > MCU > Voltage Threshold and System > MCU > Power Management to configure the router to enter standby mode based on a low voltage threshold, the state of the ignition switch, or an I/O input, or configure it to operate only at certain times of day.
Voltage Threshold
ENABLE: enables Voltage Threshold settings, allowing you to configure custom values for low-voltage standby DELAY, STANDBY VOLTAGE and RESUME VOLTAGE.
DELAY: Set the time period (in seconds) that the voltage to the router must drop below the STANDBY VOLTAGE before the router goes into standby mode.
STANDBY VOLTAGE: If the incoming voltage to the router is below the value set in this field for the period of time set in the DELAY Period field, the router goes into standby mode.
RESUME VOLTAGE: Set the voltage at which the router exits standby mode and resumes normal operation.
The RESUME VOLTAGE must be higher than STANDBY VOLTAGE by more than 0.5 V. For example, if you set the Resume Voltage to 12 V, the highest number you can set for the Standby Voltage is 11.4 V.
Exercise caution when setting the Voltage Thresholds. Before setting the Resume Voltage, ensure that you have a power source readily available that can supply the configured voltage. The reset button is not available when the router is in standby mode, so you cannot use it to reset the router to factory default settings.
Power Management
Under Power Management, you can configure the router to enter standby mode and resume operating based on the ignition switch (for mobile installations), an I/O connection, or a timer.
VERSION: Firmware version running on the MCU microprocessor, which handles many aspects of Power Management. You may need to refer to the version for debugging purposes.
STANDBY LED: Enables (default) or disables the Standby LED. When enabled, the Power LED is solid red when the router is in standby mode. When disabled, the Power LED is off when the router is in standby mode, which reduces power draw.
POWER SOURCES: Lists the power sources (triggers) you can configure to control how the router enters standby mode. You can enable or disable each trigger from the table, or click Edit (
) to configure a power source. The sources are:
Ignition
Primary IO
Timer: Configures the router to wake from standby mode at a scheduled time for a defined duration. This setting is useful when the router is connected to a renewable power source. You can set the router to report at a regular interval every day while conserving power at other times.
To edit an Ignition source:
Click Edit (
) in the table on the row for Source > Ignition.
The Edit Source page appears
Enable/disable the Power Source.
Set the DELAY. This is the shutdown delay after ignition is off. For short stops, the delay can keep the router powered on while the vehicle is off.
Click UPDATE.
To edit an I/O source:
Click Edit (
) in the table on the row for Source > Primary IO.
The Edit Source page appears.
Enable/disable the Power Source.
Select the delay (in seconds) between the I/O state change and the router entering Standby mode.
Set which logical state of the GPIO makes the router enter or exit standby mode. If set to Active High, the router remains on while the GPIO is high and enters standby when the GPIO is low. If set to Active Low, the router remains on while the GPIO is low and enters standby when the GPIO is high.
Click UPDATE.
To edit a Timer source:
Click Edit (
) in the table on the row for Source > Timer.
The Edit Source page appears.
Enable or disable the Power Source.
Select a time PERIOD, which sets how often the router wakes up from standby mode.
Select an OFFSET in minutes. This sets how long after the hour the router wakes up from standby mode.
Select a DURATION. This sets how long the router operates before returning to standby mode.
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) to configure a power source. The sources are:
) to configure a power source. The sources are:
