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Iridium Communications, Inc.
Iridium 9523 Product Developers' Guide
Revision 2.6
2.3 Environmental
2.3.1
Environmental Specification
The environmental specifications of the Iridium 9523 are summarized in Table 3 below.
Operating Temperature Range
Storage Temperature Range
2.3.2
Environmental Tests Performed
It is expected, based on testing performed on a system that incorporates the Iridium 9523, that the Iridium
9523 would pass the tests listed in Table 4. A later revision of this document will specify which of these the
Iridium 9523 has been tested to in conjunction with a test interface board that offers no protection.
Test Name
Test Reference
IEC
Vibration (IEC60068-2-64)
Low Pressure (500.4 - II)
High Temperature (501.4 - I)
High Temperature (501.4 - II)
Low Temperature (502.4 - I)
Low Temperature (502.4 - II)
Mil Spec 810F
Temperature Shock (503.4 - I)
Vibration (514.5 - I, Cat. 8)
Shock (516.4 - I)
Iridium Communications, Inc.
Proprietary & Confidential Information
Only
Table 3: Environmental Specifications
Parameter
Operating Humidity Range
Storage Humidity Range
Table 4: Environmental Tests
Mount unit to a vibration table and excite between 15
and 500 Hz
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
Over 24 hours, cycle the unit from 33ºC to 71ºC and
back to 33ºC. Repeat 7 times.
Test is a subset of High Temperature 501.4 - Part I,
focused on the first three cycles.
Soak unit for 24 hours at -45ºC
Soak unit for 4 hours at -10ºC
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.
Secure unit to a vibration table and excite randomly
from 15-2000 Hz at 0.01 - 0.03 g^2/Hz.
Expose unit to 3 shocks of 40g over approximately
11ms in each of 3 primary axes (9 total shocks).
Page 18 of 115
Information Contained in this Guide
is Subject to Change Without Notice
Value
-30ºC to +70ºC
≤ 75% RH
-40ºC to +85ºC
≤ 93% RH
Test Description
Distribution of Guide Restricted
to Product Developers
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