4 Thor VM1A Vehicle-Mounted Computer
Power Management Modes
The Thor VM1A has three power modes: On, Sleep, and Off.
On Mode
When the computer is attached to vehicle power, external power supply, or is oper-
ating from the UPS battery and the power button is pressed, the computer is in the
On mode. In this mode, the keypad, touch screen, and any attached peripherals,
such as a scanner, function normally. The display remains On unless the unit tran-
sitions to Sleep Mode or screen blanking is activated.
When in On mode, the status LED is solid green.
Sleep Mode
When the computer enters Sleep mode, all LEDs are off. Sleep mode occurs when
the power button is pressed momentarily or the inactivity timer expires.
When in Sleep Mode, the status LED:
• is green, if external power is attached.
• is off, if external power is not attached.
To wake the computer from Sleep Mode, momentarily press the power button.
Off Mode
When the power button is held, an option menu appears, and Power Off is selected.
The computer is also Off when it is not connected to a power source and the UPS
battery is depleted. However, an internal Real Time Clock (RTC) powered by an
internal battery, maintains the date and time while the computer is Off.
About the Power Supply
Vehicle DC Power Supply
Vehicle power input for the dock is 10V to 60V DC and is accepted without the need
to perform any manual operation within the dock, see
12-48 VDC Vehicles (10-60
VDC Direct Connection)
. The dock provides a regulated power output for the VM1A.
By using a specified DC/DC power supply, input voltage of 50-150V DC can be
accepted, see
60-144 VDC Vehicles (50-150 VDC Power Supply, Screws on Top of
Lid)
or 60-144 VDC Vehicles (50-150 VDC Power Supply, Screws on Side of Lid).
Input power to VM1A is fused for protection and the fuse is externally accessible,
see
Fuse.
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