Ningbo Kepo Electronics Co.,Ltd.
http://www.chinaacoustic.com
Model No. :
Page
Revision No.
Drawing No.
6/9
Specification for Magnetic Transducer
OEM2845R
1.0
DAP9050-E3
.
1
Table 1
7.
Environmental Characteristics
Z
!
3
+80
4
2
&
P
+
,
>
240
)
`
^_
-
`
!
.
4
)_
`
After being placed in a chamber with +80
4
2
&
for 240
hours and then being placed in natural condition for 4
hours, sounder shall be measured.
After being placed in a chamber with -30
4
2
&
for 240 hours and then being placed in
natural condition for 4 hours, sounder shall
be measured.
Z
!
3
-30
4
2
&
P
/0
,
>
240
)
`
^_
-
`
!
.
4
)_
`
Z
90%
%
95% R.H.,
!
3
+40
4
2
&
P
$
,
>
240
)
`
^_
-
`
!
.
4
)_
`
After being placed in a chamber at -30
4
2
&
for 30
minutes, sounder shall be placed at room
tempe20
&
).After 15 minutes at this
temperature ,sounder shall be placed in a chamber at
+80
4
2
&
. After 30 minutes at this temperature,
sounder shall be returned to room temperature (+20
&
)
for 15 minutes.
After 5 above cycles, sounder shall be measured
after being placed in natural condition for 4 hours.
X
Z
!
3
-30
4
2
&
P
/0
,
>
30
J]
`
^_
Z
1
!
(+20
&
)15
J]_
,
Z
+80
4
2
&
P
+
,
>
30
J]
`
2
Z
1
!
(+20
&
)15
J]
.
3
O
=
4
5
,
!.
4
)_
`
]
'H
Sound Pressure Level
+
$
Item
Temperature
Cycle
!
3
4
7.4
2
!
7.1
5
Humidity
7.3
5
!
Dry Heat Test
(Storage)
Cold Test
(Storage)
7.2
#
$
+
$
Item
$
_67
5
Specification after test
89
±
10dB
Initial Value
4
10dB
#
$
_
HW
Specification
)
R.
1
P
*
The measured
value shall meet
Table 1.
#
$
Test Condition
After being placed in a chamber with 90 to
95%R.H. at +40
±
2
&
for 240 hours and then
being placed in natural condition for 4 hours,
sounder shall be measured.
