Specifications

WA_DEV_FEX20_PTS_004 Rev 001 June 30, 2010 38
Expansion Card Product Technical
Specification
Reliability Compliance and
Recommended Standards
Table 37: ISO Failure Mode Severity Classification
Class
Definition
CLASS A
All equipment/system functions are fulfilled normally (100% functional) during and after the
constraint.
The Fastrack Xtend and the Expansion Card shall exhibit normal function during and after
environmental exposure. The Fastrack Xtend and the Expansion Card performance shall meet
the minimum requirements of 3GPP or appropriate wireless standards.
CLASS B
All equipment/system functions are fulfilled normally during application of the constraint;
however, one or several of them may be out of the specified tolerances. After application of the
constraint, all functions automatically return within standard limits. The memories shall remain
in compliance with Class A.
The Fastrack Xtend and the Expansion Card shall exhibit the possibility at all times to establish
a voice, SMS or DATA call. Unless otherwise stated, full performance should return to normal
after the external influence has been removed.
CLASS C
No functional requirement will be fulfilled during the application of the constraint; however, full
functionality will automatically be returned after the constraint has been removed.
6.3.2. Reliability Prediction Model
The following tables enumerate the different tests performed on the Fastrack Xtend and their
corresponding conditions and results.
6.3.2.1. Life Stress Test
The following tests the Fastrack Xtend’s product performance.
Table 38: Life Stress Test
Designation
Condition
Performance Test
PT3T° & PT
Standard: N/A
Special conditions:
 Temperature:
 Class A: -20 °C to +55°C
 Class B: -30 °C to +75°C
 Rate of temperature change: ± 3°C/min
 Recovery time: 3 hours
Operating conditions: Powered
Duration: 10 days
6.3.2.2. Environmental Resistance Stress Test
The following tests the Fastrack Xtend’s resistance to extreme temperature.