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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).