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Iridium 9523/9523N L-Band Tra nsce iver Integrator Devel opme nt Guide
Revis ion 7 .4
2.3
Environmental
2.3.1
Environmental Specification
The environmental specifications of the Iridium Core 9523/9523N are summarized in Table 5 below.
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.
Test Name
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-STD-810GF
Temperature Shock (503.4 - I)
Vibration (514.5 - I, Cat. 8)
Shock (516.4 - I)
Proprietary & Confidential Information
Distribution of guide restricted to product dev elopers only . Inf ormation contained in this guide is subject to change without notice.
.
Table 5: Environmental Specifications
Parameter
Operating Temperature Range
Operating Humidity Range
Storage Temperature Range
Storage Humidity Range
Table 6: Iridium Core 9523 Environmental Tests
Test Reference
Value
-30ºC to +70ºC
≤ 75% RH
-40ºC to +85ºC
≤ 93% RH
Test Description
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).
20
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