Safety Precautions
34
Humidity Tested by subjecting continuously for
10 days (95% RH)
Solar
Radiation
Tested by subjecting continuously for
20 hours to 1,120 W/m
2
followed by
shielding from radiation for 4 hours,
repeated for 10 days
Vibration Tested by subjecting to vibration for
3 hours (in 3 directions at 1 hour
each/20 to 2,000 Hz)
Icing/
Freezing
Rain
Tested by exposing to -10ºC chilled
water until coated with ice to 6 mm
Temperature
Shock
Tested by subjecting to sudden
temperature change from -21 to 50ºC
continuously for 3 hours
High
Temperature
(Operation)
Operation environment: Tested in
an operation environment of 60ºC
continuously for 3 hours, with 3 cycles
of the temperature change ranged 32
to 49℃
Storage environment: Tested in
a storage environment of 70ºC
continuously for 4 hours, with a
temperature change ranged 30 to
60ºC
High
Temperature
(Storage)
Low
Temperature
(Operation)
Operation environment: Tested in
an operation environment of -21ºC
continuously for 3 hours
Storage environment: Tested in
a storage environment of -30ºC
continuously for 4 hours
Low
Pressure
(Storage)
Low
Pressure
(Operation)
Tested continuously for 2 hours (57.2
kPa/ equivalent to altitude of about
4,572 m)
Low
Pressure
(Storage)
Freeze-
Thaw
Tested by first subjecting to -10ºC
environment with condensation and
mist for 1 hour, and then checking
operation in a 25ºC, 95% RH
environment
Withstand
load
Tested by subjecting to even surface
load of 100 kgf
Seawater
resistance
Tested by immersing in normal-
temperature, 20-kPa seawater
(maximum depth of 2.0 m) for about
60 minutes
