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FIBOCOM NL668-AM Hardware User Manual
Page 50 of 62
Signal
VL
VH
Unit
Min
Max
Min
Max
Digital input
-0.3
0.6
1.2
2.0
V
Digital output
-
0.45
1.35
-
V
Parameter
I/O
Min
Typ
Max
Unit
VBAT
I
3.3
3.8
4.3
V
SIM_VDD
O
1.7/2.75
1.8/2.85
1.9/2.95
V
Table 5-3 Electrical Characteristics of the Interface in Operating Status
5.4 Environmental reliability requirements
Test items
Test conditions
Low temperature storage test
Temperature -40
℃
±3
℃
, 24 hours in shutdown state
High temperature storage test
Tempe85
℃
±3
℃
, 24 hours in shutdown state
Temperature shock test
In shutdown state, 0.5 hour at -40
℃
and +85
℃
environment
respectively, the temperature conversion time <3min, for 24 cycles
High temperature and humidity
test
Tempe85
℃
±3
℃
, humidity 90 ~ 95% RH, 24 hours in
shutdown state
Low temperature operating test
Temperature -30
℃
±3
℃
, 24 hours in operating state
High temperature operating test
Tempe75
℃
±3
℃
, 24 hours in operating state
Vibration test
Conduct vibration test according to the requirements shown in the
table below:
Frequency
Random vibration ASD
(Acceleration Spectral Density)
5~20Hz
0.96m
2
/s
3
20~500Hz
0.96m
2
/s
3
(20Hz), other
-3dB/octave
Connector life test
30 times of insertion/removal for RF antenna interface cable
Table 5-4 Environmental Reliability Requirements
