IBM 8308 Computer Hardware User Manual


 
Dimensions
Height:
110
mm
(4.3
in.)
Width:
310
mm
(12.2
in.)
Depth:
343
mm
(13.5
in.)
Weight
Minimum
configuration
as
shipped:
8.1
kg
(18
lb)
Maximum
configuration:
9.1
kg
(20
lb)
Environment
Air
temperature:
System
on:
10°
to
35°C
(50°
to
95°
F)
System
off:
10°
to
43°C
(50°
to
110°
F)
Maximum
altitude:
2134
m
(7000
ft)
Note:
The
maximum
altitude,
2134
m
(7000
ft),
is
the
maximum
altitude
at
which
the
specified
air
temperatures
apply.
At
higher
altitudes,
the
maximum
air
temperatures
are
lower
than
those
specified.
Humidity:
System
on:
8%
to
80%
System
off:
8%
to
80%
Electrical
input
Input
voltage:
Low
range:
Minimum:
90
V
ac
Maximum:
137
V
ac
Input
frequency
range:
57–63
Hz
Voltage
switch
setting:
115
V
ac
High
range:
Minimum:
180
V
ac
Maximum:
265
V
ac
Input
frequency
range:
47–53
Hz
Voltage
switch
setting:
230
V
ac
Input
kilovolt-amperes
(kVA)
(approximate):
Minimum
configuration
as
shipped:
0.08
kVA
Maximum
configuration:
0.30
kVA
Note:
Power
consumption
and
heat
output
vary
depending
on
the
number
and
type
of
optional
features
installed
and
the
power-management
optional
features
in
use.
Heat
output
(approximate)
in
British
thermal
units
(Btu)
per
hour:
Minimum
configuration:
257
Btu/hr
(75
watts)
Maximum
configuration:
497
Btu/hr
(145
watts)
Airflow
Approximately
0.40
cubic
meters
per
minute
(14
cubic
feet
per
minute)
maximum
Acoustical
noise-emission
values
Average
sound-pressure
levels:
At
operator
position:
Idle:
34
dBA
Operating:
36
dBA
At
bystander
position
-
1
meter
(3.3
ft):
Idle:
31
dBA
Operating:
34
dBA
Declared
(upper
limit)
sound-power
levels:
Idle:
4.4
bels
Operating:
4.7
bels
Note:
These
levels
were
measured
in
controlled
acoustical
environments
according
to
the
procedures
specified
by
the
American
National
Standards
Institute
(ANSI)
S12.10
and
ISO
7779
and
are
reported
in
accordance
with
ISO
9296.
Actual
sound-pressure
levels
in
a
given
location
might
exceed
the
average
values
stated
because
of
room
reflections
and
other
nearby
noise
sources.
The
declared
sound-power
levels
indicate
an
upper
limit,
below
which
a
large
number
of
computers
will
operate.
Note:
See
the
Quick
Reference
for
the
classification
of
your
computer.
Types
8303,
8304
and
8312
This
section
lists
the
physical
specifications
for
Type
8303,
8304,
and
8312
computers.
14
Hardware
Maintenance
Manual