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If the level of the car battery voltage is below of the Low Battery Threshold, the device will
indicate about low battery level and not power up.
CAUTION: Over-voltage
The device is operational when the car battery voltage is within valid range. If the level of
the car battery voltage is higher than the Critically High Battery Limit, the device will not
power up.
CAUTION: Over-current
The device is operational when the battery current drain is within valid range. If the level
of the car battery current drain is higher than the Critical Current Consumption Limit, the
device will not power up.
Power Off
The display can be turned off either from the CPU box or from the power button located on
the display’s front.
The
POWER OFF PREFERENCES parameter provides three options to turn off the display: CPU
REQUEST, USB 5V ABSENCE, and POWER BUTTON
. You can select any of above options or use
their combination.
• When
CPU REQUEST = ENABLE, the device will automatically shut itself down when the
CPU issues power off request.
• When
USB 5V ABSENCE = ENABLE, the device will automatically shut itself down when
the CPU deasserts USB 5V output.
• When
POWER BUTTON = ENABLE, pressure of the display power button will force power
off.
If you press display's power button while
POWER BUTTON = ENABLE, the display will turn itself
off immediately, not waiting for the end of the CPU shut down process.
This operation may (or may not) force the CPU shut down depending on setting of the
POWER OFF EVENT parameter. If your intention is to turn off the CPU when the display is off,
enable sending of Power Off notification to the CPU. If it’s not your intention, disable sending
of Power Off notification - it will prevent the CPU from shutting down.
If the system does not respond, you can turn the device off by pressing and holding the
display power button for 6 seconds or more. To permit this option, enable
CRITICAL TURN OFF.
Be aware, this uncontrolled hardware power off may damage CPU hard disk content.
CAUTION: Critical Shut Down
Some critical events such as temperature below the low or above the high operating limit or
discharged car battery might cause the device to power off.
• Internal temperature is beyond the operational limit.
If during operation the internal temperature is close to the low or high operational
limits, the display will provide critical temperature indication. If during operation the
internal temperature goes out of the operational limits, the display eventually powers
off.
• Vehicle battery is discharged.
If, during normal operation, the battery voltage drops below the Low Battery
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