MeiG_SLM320_Hardware Design Manual
MeiG Smart Technology Co., Ltd
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6.5 Environmental reliability requirements
Table 29 Environmental reliability requirements
Test Item
Test Condition
LTST
The temperature is -40
ȭ
, and the shutdown lasts for 24 hours
HTST
The temperature is +85
ȭ
, and the shutdown lasts for 24 hours
ermal shock-TST
In the shutdown state, the temperature was -40
ȭ
and +85
ȭ
for 1h
respectively.
Temperature conversion time <3min, a total of 24 cycles
High temperature and
humidity test
Tempe85
ȭ
, humidity 95%RH, shutdown state for 48 hours
Low temperature
running test
The temperature is -40
ȭ
, and the working condition lasts for 24 hours
High temperature
running test
The temperature is +85
ȭ
, and the working condition lasts for 24 hours
Connection life test
Board to board connector interface plugs and unplugs for 50 times; RF
antenna interface cable plug and unplug 30 times
ESD
test
1. The module tests the power PAD and large area under the call state.
ESD meets the following requirements:
ʒ
Contact discharge shall pass ±4KV, ±5KV test grades
ʓ
The air discharge shall pass ±8KV, ±10KV test grades
2
、
Under the shutdown state, THE EVB SIM card holder is tested. ESD
meets the following requirements:
ʒ
Contact discharge shall pass ±4KV test grade
ʓ
Air discharge shall pass ±8KV test grade
3
、
Other interfaces of the module, ESD meets:
ʒ
Contact discharge shall pass ± 0.5kV test grade
ʓ
Air discharge shall pass ±1KV test grade
6.6 ESD
character
Although SLM320 module design has been considered the ESD problem, and added the ESD protection,
but consider SLM320 module during transportation and secondary development, it may also come
across ESD problem. So, developers need to take into account of the final product ESD problem,
besides the antistatic packaging processing, please refer to the reference design/recommended circuit
of each hardware interface in this document.
Refer to the following table for the discharge range allowed by ESD for SLM320 module.
Table 30 ESD performance parameters (temperature: 25
℃
, humidity: 45%)
Test point
Contact discharge
Units
Test point
