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numbers in a different order
, such as 1, 2, and 3. Identification of the hardware ports can
be done by checking the address of the I/O resource associated with each COM port by the
OS.
VGA
The VIDEO connector has standard VGA signals. Display resolution up to 1280x1024 is
supported.
Power Management
The MOBL-D2 system hardware and BIOS support APM power management functions.
The Ignition Detect signal on the Power connector controls the power management Power on
and Shutdown functions; this signal should be connected to the vehicle ignition. If not used,
the Ignition Detect signal must be tied to VIN to allow the system to start.
Operation when the ignition terminal is connected to vehicle ignition, or a “switched” power
source is as follows: The system will remain in “soft off” – a very low power state as long as
Ignition remains low. When Ignition is raised to VIN system startup is initiated, after a
short delay to ensure Power and Ignition are stable*. Disconnecting Ignition, or connecting
to ground will signal the operating system to shut down – however the system remains on,
drawing power from the VIN terminal until shutdown occurs and the system returns to soft
off. Failure of the operating system to shutdown in a reasonable time* will result in a forced
soft off state.
Shutting down the operating system while ignition is connected to power levels (high state)
will cause the system to enter a standby low power state indicated by a yellow power LED on
the front panel, and will remain as long as ignition is applied. Removal and reapplication of
voltage to the ignition lead will restart the system.
If ignition should be removed long enough to initiate shutdown, but returns before shutdown
of the operating system is complete, the system will automatically restart.
*The Ignition Minimum Time and Force Off Timeout are programmable with a configuration
utility available from Octagon Systems (contact tech support), however are initially set to 3
seconds and 180 seconds respectively by the factory.
Digital I/O
The MOBL-D2 provides one digital output. When activated, provides a ground for external
devices connected to the vehicle voltage. When inactive it appears as an open. The line can
withstand voltages up to 100V when in the off state and can sink 100 mA when active.
The output line will provide 1A peak repetitive for 50mS for driving incandescent lamps
switching on at a rate of one per second, at a 50% duty cycle with a 50mA lamp. The output
line has inductive load protection with a 1A, 100V diode.
The MOBL-D2 also provides four digital inputs. The inputs detect connection (current sink)
to ground. The input is inactive when open (less than 100µA), and active when connected to
ground (sinking at least 1mA). The digital lines are limited 10ma external current sink.
Note that drivers written by Octagon Systems indicate a binary value of 1 when the input is
open/inactive, and 0 when grounded.
