Ningbo Kepo Electronics Co.,Ltd.
Sounder shall be measured after being applied vibration of
amplitude of 1.5mm with 10 to30Hz band of vibration frequency
to each of 3 perpendicular directions for 2 hour.
5
Vibration
Resistance
Item
Specification
Sounder packed in the carton are dropped in six direction
from the height of 80cm to the concrete floor.
Drop Test
6
7
Terminal
Strength Pulling
The force 10 seconds of 9.8N is applied go each terminal in
axial direction.
Solderability
Lead terminals are immersed in rosin for 5 seconds and the
immersed in solder bath of +260
±
5
°
C for 3
±
0.5 seconds.
8
Model No. :
Page
Revision No.
Drawing No.
5/10
Specification for Transducer
1.2
4. Reliability Test
KPT-1420A
OEM2103SPE
S.G. : DF1010 Oscillater or equivalent
MIC : ND10 S.P.L. or equivalent
piezoelectric sounder
10cm
5. Measurement Block Diagram & Response curve
≥
1
m
Sound meter
Run continuously for 240 hours with input signal 20Vp-p,4KHz
Square wave, sounder shall be measured after being placed in
natural condition for 4 hours.
9
Run continuously
test
