| Item |
Test Conditions |
Evaluation Standard |
|
| 1 |
High Temp. Test |
After exposure at 70¢J for 100 hours, and expose to room
temperature for 6 hours, sensitivity to be within ¡Ó3dB from
initial sensitivity. |
After any tests , the sensitivity to be within ¡Ó3dB of
initial sensitivity after 3 hours of conditioning at 20¢J and
shall keep their initial operation and appearance. |
| 2 |
Low Temp. Test |
After exposure at -25¢J for 100 hours, and expose to room
temperature for 6 hours, sensitivity to be within ¡Ó3dB from
initial sensitivity. |
|
| 3 |
Temp.Cycle Test |
After exposure at 70¢J for 1 hour, at room temp. for 1
hour, at -25¢J for 1 hour, at room temp. for 1 hour, at 10
cycles, and expose to room temp. for 6 hours, sensitivity to
be within ¡Ó3dB from initial sensitivity. |
|
| 4 |
Humidity Test |
After exposure at 40¢J and 90¡Ó5% relative humidity for 240
hours, and expose to room temperature for 6 hours, sensitivity
to be within ¡Ó3dB from initial sensitivity. |
|
| 5 |
Vibration Test |
The microphone unit must be subjected to each 30 minutes
vibrations at three axises 3 mm dynamic rang.
1000cycles/minute. |
|
| 6 |
Drop test |
The microphone unit without packaged must be subjected to
each 3 drops at three axises from the height of 1 meter to
20mm thick hardwood. |
|
| 7 |
Pull Strength Test |
The microphone assembly shall suffer no change from a pull
strength of 0.5 kg for 3 seconds applied between the connector
and the microphone. |
Application of the "pin" type |
