4.RELIABILITY
4.1 DROP CHARACTERISTICS
CONDITION: HEIGHT 50CM,3 TIMES,TEST AFTER 1 HOUR
EQUIPMENT:S&A250B,THICKNESS 3CM HARD WOOD
STANDARD:FREQUENCY CHANGE+/-5PPM,
RR AS SPECIFICATION
4.2 SHAKE CHARACTERISTICS
CONDITION:SHAKE FREQUENCY10~55HZ, CYC1~2 MINUTES,SWING 1.5MM,
DIRECTION X/Y/Z,ALL 30 MINUTES . TEST AFTER 1 HOUR
EQUIPMENT:S&A250B,TEST MACHINE
STANDARD:FREQUENCY CHANGE+/-5PPM,
RR AS SPECIFICATION
4.3 AIRPROOF CHARACTERISTICS
CONDITION: PUT CRYSTAL INTO THE PRESSURE CABIN WITH
ALCOHOL,KEEP PRESSURE 0.4-0.5Mpa 10 MINUTES,THEN
TAKE OUT AND BLOW FOR 5 MINUTES
EQUIPMENT: IR MACHINE
STANDARD:IR≥ 500 MΩ
4.4 BEND CHARACTERISTICS
CONDITION: 5N，90°，3 TIMES
EQUIPMENT:TEST MACHINE
STANDARD:NO DAMAGE
4.5 WELD CHARACTERISTICS
CONDITION: 235±5℃、3 SECONS
EQUIPMENT:TEST MACHINE
STANDARD:90% ADHIBIT TIN OK
4.6 HUMIDITY CHARACTERISTICS
CONDITION:40℃+/-2℃, HUMIDITY 90-95%,250 HOURS.
EQUIPMENT:S&A250B,TEST CABIN
STANDARD:FREQUENCY CHANGE+/-5PPM,
RR AS SPECIFICATION
4.7 LOW TEMPERATURE CHARACTERISTICS
SHOULDER [ SHOULDER ELECTRONICS LIMITED. ]
