Publication No. HRMCR11 Rev. B.0
About This Manual 61
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Maxi.tnwn height usage
Table 33: Marunum height usage
Styles 1-6
Style 8
Maximulll height
4
.
5
kill
Vacuulll
Operating
Storage
12 kill
Vac
u
ulll
Only the conduction cooled board
(
Style 8) is capable to be used in a vacuwn
envirolllllent. All other styles contai.t1 batteries or do not have the possibility to
be cooled without airflow
.
For highest operati.t1g temperatures (Styles 1-6) please refer to the following
diagralll:
8
0
,
0
�---------------------�
60
,
0
50
,
0
CR11 V1
no PMC
,
no HDD
,
next slot occupied
,
worst thermal contact
,
both cores at 100
°
C
are running a
thermal design power
instruction mix
,
final measurements
PS 27.08.2007
--l2400 Core
™
Duo 1.67GHz
..-L7400 Core
"'
20uo 1.5GHz
--
T2SOO Core
"'
Ouo 2.0GHz
-T7400 Core
"'
20uo 2.16GHz
30
,
0
+-----�-----�----�-------l
1
,
5
2
2
,
5
3 free A
i
rspeed
i
nto S
l
ot
m/s
Figure 21: Temperature vs. airspeed
•
The above diagram is valid for a usage at heights up to
1
000
Ill
above sea
level. For higher heights the lllaxi.tnulll temperature values have to be
reduced in an appropriate way.
•
The core
t
e
lll
perature of the CPU can be read out via the on board
telllperature sensor. The value lllUSt be kept below 100 °C for all operating
condition
s.
This value is already included i.t1 the airspe.ed diagralll above. If
this telllperature limit is violated, the Core
™
Duo CPUs will start to reduce
its internal frequency telllporarily. This can be heard by a short click of the
speaker whic
h
occurs every
0
.
8
seconds. The Celeron processor will not
automatic switch down to lower frequencies but will stop its i.t1temal clock
in preprogralllmed intervals.
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