Power Modes 41
E-EQ-MX3RFIDRG-A MX3-RFID Reference Guide
Critical Suspend Mode
The purpose of the Critical Suspend mode is to reduce power consumption to a lower level that
still retains the contents of SDRAM. The device enters Critical Suspend Mode only when the main
battery has failed or is removed/hot-swapped. The backup battery is supplying power to the unit
during Critical Suspend Mode.
When hot-swapping (the main battery is removed and replaced), the display turns off, the BATT
M LED begins to flash red, all peripherals are shut down, the CPU clock is stopped, and power is
removed from the PCMCIA card.
When the device is in the Critical Suspend state (the main battery is in place and the device is
being powered by the backup battery), the display turns off, the BATT M LED begins to flash red,
all peripherals are shut down, the CPU clock is stopped, and power is removed from the PCMCIA
card. The operating system is saving the state prior to the main battery failing and cannot be used.
If a fully charged main battery is installed before the backup battery is depleted (approximately 5
minutes) the device transitions to the Suspend state. To resume operation tap the Power key.
If the backup battery is depleted before a fully charged main battery is inserted, the device
immediately turns itself Off and all unsaved information is lost. Insert a fully charged main battery
and press the Power button to turn the device On.
Off Mode
The unit is in Off Mode when the main battery and the backup battery are depleted.
Insert a fully charged main battery and press the Power button to turn the device On. The mobile
device reverts to the last saved default (factory) values. Follow the steps in “Getting Started”.
