41110590
Rev 6.1
January 28, 2019
48
Product Technical Specification and
User Guide
Reliability Compliance and
Recommendations
8.2.
Reliability Prediction Model
Note:
Information in the following sub-sections may be subject to change.
8.2.1.
Life Stress Test
The following tests the modem’s product performance.
Table 32.
Life Stress Test
Designation
Condition
Performance Test
PT3T & PTRT
Standard: N/A
Special conditions:
•
Temperature:
Class A: -30°C to +70°C
Class B: -40°C to +85°C
Rate of temperature change: ± 3°C/min
•
Recovery time: 3 hours
Operating conditions: Powered
Duration: 14 days
8.2.2.
Environmental Resistance Stress Tests
The following tests the modem’s resistance to extreme temperature.
Table 33.
Environmental Resistance Stress Tests
Designation
Condition
Cold Test Active
COTA
Standard: IEC 680068-2-1, Test Ad
Special conditions:
•
Temperature: -40°C
•
Temperature variation: 1°C/min
Operating conditions: Powered ON with a power cycle of 1 minute ON and 2
minutes OFF
Duration: 3 days
Resistance to Heat Test
RH
Standard: IEC 680068-2-2, Test Bb
Special conditions:
•
Temperature: +85°C
•
Temperature variation: 1°C/min
Operating conditions: Powered ON with a power cycle of 15 minutes ON and
15 minutes OFF
Duration: 50 days
