Iridium Communications, Inc. Information Contained in this Guide
Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice
Revision 2.6
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2.3 Environmental
2.3.1 Environmental Specification
The environmental specifications of the Iridium 9523 are summarized in Table 3 below.
Table 3: 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 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.
Table 4: 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 Spec 810F
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 chambe
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).
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