User's Manual

Iridium Communications, Inc. Information Contained in this Guide
Iridium Core 9523/9523N Product Developer’s Guide is Subject to Change Without Notice
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2.3 Environmental
2.3.1 Environmental Specification
The environmental specifications of the Iridium Core 9523/9523N are summarized in Table 5 below.
Table 5: Environmental Specifications
Parameter
Value
Operating Temperature Range
-30ºC to +70ºC
Operating Humidity Range
≤ 75% RH
Storage Temperature Range
-40ºC to +85ºC
Storage Humidity Range
≤ 93% RH
2.3.2 Environmental Tests
An Iridium system that incorporates the Iridium Core 9523 has passed the tests listed in Table 6. The
Iridium Core 9523N has passed the tests in Table 7. It is expected that a system incorporating the Iridium
Core 9523/9523N designed according to this document should also pass these tests.
Table 6: Iridium Core 9523 Environmental Tests
Test Name
Test Reference
Test Description
IEC
Vibration (IEC60068-2-64)
Mount unit to a vibration table and excite between 15
and 500 Hz
MIL-STD-
810GF
Low Pressure (500.4 - II)
Decrease pressure to 57.2 kPa (equivalent to 15,000 ft)
at a rate not to exceed 10 m/s and hold for 1 hour
High Temperature (501.4 - I)
Over 24 hours, cycle the unit from 33ºC to 71ºC and
back to 33ºC. Repeat 7 times.
High Temperature (501.4 - II)
Test is a subset of High Temperature 501.4 - Part I,
focused on the first three cycles.
Low Temperature (502.4 - I)
Soak unit for 24 hours at -45ºC
Low Temperature (502.4 - II)
Soak unit for 4 hours at -10ºC
Temperature Shock (503.4 - I)
Soak unit at -40C for 4 hours. Transfer to 85C chamber
and soak additional 4 hours. Repeat 3 times. Each
transfer from one temperature environment to the other
should be made in less than 1 minute.
Vibration (514.5 - I, Cat. 8)
Secure unit to a vibration table and excite randomly
from 15-2000 Hz at 0.01 - 0.03 g^2/Hz.
Shock (516.4 - I)
Expose unit to 3 shocks of 40g over approximately
11ms in each of 3 primary axes (9 total shocks).