Datasheet

6. Physical Characteristics
Test Item Test Conditions Performance Requirements
6-1. Vibration
Sounder shall be measured after being applied
vibration of amplitude of 1.5 mm with 10 to
55 Hz band of vibration frequency to each
three mutually perpendicular directions for
2 hours.
The measured values shall
meet Table 1.
6-2.
Wire
Pull Strength
On the ceramic disc, Horizontal: 500g min.
Vertical: 300g min.
No break on the wire.
No electrode dislodge on
the disc.
7. Environmental Characteristics
Test Items Test Conditions Performance Requirements
7-1.
High
Temperature
After being placed in a chamber with +85 ±
2°C for 240 hours and then being placed in
natural condition for 4 hours, sounder shall be
measured.
7-2.
Low
Temperature
After being placed in a chamber with -40 ± 2°C
for 240 hours and then being placed in natural
condition for 4 hours, ringer shall be measured.
7-3. Humidity
After being placed in a chamber with 90 to 95%
R.H. at + 40 ± 2°C for 240 hours and
then being placed in natural condition for 4
hours, sounder shall be measured.
The measured values
shall meet Table 1.
7-4.
Temperature
Cycle
After being placed in a chamber at -40 ± 2°C
for 30 minutes, sounder shall be placed at room
temperature (+20°C). After 15 minutes at this
temperature, sounder shall be placed in a
chamber at +85 ± 2°C. After 30 minutes at
this temperature, sounder shall be returned to
room temperature (+20°C) for 15 minutes.
After 5 above cycles, sounder shall measured
after being placed in natural condition for
hours.
Table 1
Items Performance Requirements
Sound Pressure Level
Initial Value ± 10 dB
P3/5