Environmental - Iridium Certus 9770 User Manual

ambient environment to ensure that both the Iridium Certus 9770's ambient and case temperature
does not exceed the temperatures in Table 4.6-1. If the Iridium Certus 9770 gets too hot, its
thermal protection circuitry can shut the transceiver off and put it into a fault mode. Once the
Iridium Certus 9770 enters a fault mode, a reset or power up is required to recover. Reference 1
describes how to read the status of internal temperature sensors and the notifications that are
generated if the Iridium Certus 9770 goes into fault mode.
Maximum Case Temperature
Maximum Ambient Temperature
Table 4.6-1: Thermal Management Temperature Specifications
When transmitting or when ambient temperatures exceed 60 degrees C, the Iridium
Certus 9770's caseworks can be hot to the touch. Avoid direct contact with the
transceiver in order to avoid burns.
5

Environmental

The environmental specifications for the Iridium Certus 9770 are summarized in Table 5-1 below.
Parameter
Operating Temperature Range
Operating Humidity Range
Storage Temperature Range
Storage Humidity Range
Operational Vibration
Shock
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IR3142-ICD-006 Issue 1 v2.1
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Parameter
40 Hz to 500 Hz dropping 6dB per octave
21 Hz to 500 Hz dropping 3 dB per octave
10 G peak shock over a period of 11 ms,
3 shocks in 3 perpendicular orientations
Table 5-1: Environmental Specifications
Value
75 ºC
70 ºC
Value
-40 ºC to + 70 ºC
≤ 95% RH
-40 ºC to + 85 ºC
≤ 93% RH
0.02 g²/Hz from 10 Hz to 40 Hz,
0.96 m²/s³ from 5 Hz to 20 Hz,
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