16 SBC330 3U VPX Single Board Computer
Publication No. SBC330-0HH/3
3.2 Cooling
CAUTION
SBC330 boards dissipate too much power to remain within operational temperatures if used
without a cooling mechanism at room temperature.
SBC330
build
levels
1
to
3
must
not
be
powered
unless
there
is
airflow
of
300
LFM
(levels
1
and
2)
or
600
LFM
(level
3)
present.
SBC330
build
levels
4
and
5
must
not
be
powered
unless
the
wedge
‐
locks
securing
them
to
the
conduction
‐
cooled
chassis
have
been
tightened
to
provide
a
path
for
heat
flow.
CAUTION
Do not use SBC330 on an extender card unless there is a suitable fan to provide the required
airflow.
3.3 Power-up
3.3.1 Checklist
Before
powering
‐
up,
check
that
the
user
jumpers
are
configured
as
desired
for
boot.
This
is
described
in
detail
in
Chapter
4 •
.
(If
slot
guides
are
missing
in
the
rack,
ensure
that
the
board
is
orientated
correctly)
3.3.2 Power-up
The
SBC330
board’s
power
requirements
are
up
to
15
A
@
5
V
(50
W)
from
VS3(VCC),
operating
within
the
VPX
Specification
limits
(5
V
+5
%
‐
2.5
%).
The
VPX
P3V3_AUX
voltage
rail
is
required
only
for
supplying
the
Real
Time
Clock
in
the
absence
of
system
power.
WARNING
Do not exceed the maximum rated input voltages or apply reversed bias to the assembly. If
such conditions occur, toxic fumes may be produced due to the destruction of components.
You
can
now
power
‐
up
the
unit.
As
the
SBC330
runs
through
its
boot
sequence,
the
monitor
(COM1,
COM2)
should
display
the
initialization
progress.
3.4 Connecting to SBC330
To
interact
with
the
SBC330,
the
minimum
requirement
is
a
control
terminal
such
as
PC
‐
based
Windows
‘HyperTerminal’
connection
present
on
the
serial
COM1
port.
An
Ethernet
connection
is
required
for
Host/Target
interaction
until
the
kernel/application
software
is
stored
in
Flash.
At
GEIP,
TeraTerm
is
used
as
it
allows
long
scroll
buffers,
which
is
useful
in
debug.
For
development
systems,
connection
to
the
Serial
and
Ethernet
I/O
can
be
achieved
using
the
SBC330RTM
‐
11
Rear
Transition
Module.
This
converts
the
pinout
of
the
SBC330
in
the
VPX
backplane
connectors
to
industry
‐
standard
I/O
connectors.