Reliability Specifications - Sierra Wireless AirLink LS300 Hardware User's Manual

Rev 5 Apr. 13
Table 4-10: Environmental Specifications
Category
Thermal Shock
Water Resistance Test

Reliability Specifications

The LS300 has a MTBF of 10.7 years for both CDMA and HSPA versions.
MTBF calculations are performed per:
• Telcordia "Reliability Prediction Procedure for Electronic Equipment"
document number SR-332, Issue 1
• Method I (parts count) is used
MTBF is based on Accelerated Life Test (ALT). The ALT sequence acceleration
factor is calculated using classical reliability formulas like:
• Arrhenius Temperature Acceleration Model
• Peck Temperature Humidity Acceleration Model
• Coffin–Manson Temperature Cycle Acceleration Model
• Power Spectral Density Power Law–Vibration Acceleration Model
AirLink LS300 Specifications
Reference
MIL-STD-810, Method 501.4, 502.4
IEC 60529
37