
Chapter 2 Hardware Installation
Chapter 5
www.dfi.com
Chapter 5 Ports and Connectors
24
Power Connector (power board)
The 3-pole power connector connects to a car battery for power supply. Note that the system
accepts a wide power range of 9 to 36V with in-vehicle power management that includes ig-
nition on/off and system on/off delay time control; please refer to the table on the right for
more information.
System-on/off Delay Switch
The DIP switch (SW1) on the
power board
(
X103- DC36) can be used to turn on or off the sys-
tem at a specific on/off delay time via car ignition. Note that this table shows that same informa
-
tion as the one in Chapter 4 - Jumper Settings.
SW1-2: System-on delay enable/disable
On (Default)
Enable (delay time setting adjust-
able by SW1-4 and 1-5 as shown in
the table below)
Off
Disable (System-on delay = 3 sec)
SW1-4 and 1-5: System-on delay time setting
4 5 Time
On On 10 sec (default)
Off On 30 sec
On Off 1 min
Off Off 5 min
SW1-3: System-off delay enable/disable
On (Default)
Enable (delay time setting adjust-
able by SW1-6, 1-7 and 1-8 as
shown in the table below)
Off
Disable (System-off delay = 0 sec)
SW1-6, 1-7 and 1-8: System-off delay time setting
6 7 8 Time
On On On 30 sec (default)
Off On On 1 min
On Off On 3 min
Off Off On 5 min
On On Off 10 min
Off On Off 15 min
On Off Off 30 min
Off Off Off 1 hr
Note:
The OS will start the shut-down procedure after the car ignition switches off and
will complete the shutdown procedure within the specified system-off delay time.
Please make sure that system-off delay time is sufficient to allow the OS to shut
down completely.
System startup process with in-vehicle power control
System shutdown process with in-vehicle power control
Ignition Off
System shuts down
& finishes shutdown
process at the
specified
delay time
System
On
System
Off
System
Off
Ignition On
System
On
System boots
Counts down
System-on
delay time
GND
S1
2
3
1
DC-IN
1
1
Power
Switch
(J2)
1
System-on/system-off delay
(SW1)
ON
1 2 3 4 5 6 7 8
H4
H3
H1
DC-in
VCC
IGN
DC-out
(to the system board)