检测依据标准 Test Basis Standards：
QB/T1909-2019
型式检验检测项目 Type Testing Items：
使用可靠性、平均瞬时日差或平均实走日差、工作温度、电压范围、温度系数、电压系数、电池更换周期、时间显示同步性、止秒功能、时分针协调差、耐振动性能、防磁性能、防震性能、防水或密封性能、耐光照性能、外观、闹时可靠性、背光显示可靠性、时段计时可靠性、闹时工作电压范围、闹时响度、最小背光输入电压、背光显示次数、时段计时精度、功能转换。
Operational Reliability, Mean Instantaneous Daily Rate or Mean Running Daily Rate in Wearing Conditions, Operating Temperature Range, Operating Voltage Range, Temperature Coefficient, Voltage Coefficient, Battery Replacement Cycle, Time Display Synchronization Error (Analog-Digital), Hacking Function, Hand Alignment Error (Hour-Minute), Vibration Resistance, Antimagnetic Performance, Shock Resistance, Water Resistance or Sealing Integrity, Light Exposure Resistance, Appearance Compliance, Alarm Activation Reliability, Backlight Function Reliability, Interval Timer Reliability, Alarm Operating Voltage Range, Alarm Sound Pressure Level, Minimum Backlight Input Voltage, Backlight Activation Cycles, Interval Timing Accuracy, Function Mode Switching Reliability.
检验周期 Inspection Cycle：
型式检验周期一般为一年一次，发生下列情况之一时应进行型式检验：
a) 产品停产一个生产周期以上又恢复生产时；
b) 产品的设计、结构、工艺、材料有较大变动时；
c) 国家质量监督机构提出进行型式检验要求时。
Type testing shall generally be conducted once annually. Type testing must be performed under any of the following circumstances:
a) When production resumes after being halted for more than one full production cycle;
b) When significant modifications are made to the product's design, structure, manufacturing process, or materials;
c) When formally required by the national quality supervision authority.
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