User's Manual
Table Of Contents
- Contents
- Figures
- Tables
- Document history
- Introduction
- Product concept
- GSM application interface
- GSM/GPRS operating modes
- Power supply
- Power up / down scenarios
- Automatic GPRS Multislot Class change
- Charging control of the GSM part
- Power saving
- Summary of state transitions (except SLEEP mode)
- RTC backup for GSM part of XT55/56
- Serial interfaces of the XT55/56 GSM part
- Audio interfaces
- SIM interface
- Control signals
- GPS application interface
- GSM and GPS antenna interfaces
- Electrical, reliability and radio characteristics
- Mechanics
- Reference approval
- Example applications
- List of parts and accessories
XT55/56 Hardware Interface Description
Confidential / Released
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XT55/56_hd_v02.06a Page 109 of 125 17.12.2004
6.8 Reliability characteristics
The test conditions stated below are an extract of the complete test specifications.
Table 36: Summary of reliability test conditions
Type of test Conditions Standard
Vibration Frequency range: 10-20 Hz; acceleration: 3.1mm
amplitude
Frequency range: 20-500 Hz; acceleration: 5g
Duration: 2h per axis = 10 cycles; 3 axes
DIN IEC 68-2-6
Shock half-sinus Acceleration: 500g
Shock duration: 1msec
1 shock per axis
6 positions (± x, y and z)
DIN IEC 68-2-27
Dry heat Temperature: +70 ±2°C
Test duration: 16 h
Humidity in the test chamber: < 50%
EN 60068-2-2 Bb
ETS 300019-2-7
Temperature
change (shock)
Low temperature: -40°C ±2°C
High temperature: +85°C ±2°C
Changeover time: < 30s (dual chamber system)
Test duration: 1 h
Number of repetitions: 100
DIN IEC 68-2-14 Na
ETS 300019-2-7
Damp heat cyclic High temperature: +55°C ±2°C
Low temperature: +25°C ±2°C
Humidity: 93% ±3%
Number of repetitions: 6
Test duration: 12h + 12h
DIN IEC 68-2-30 Db
ETS 300019-2-5
Cold (constant
exposure)
Temperature: -40 ±2°C
Test duration: 16 h
DIN IEC 68-2-1