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IR3142-ICD-006 Issue 1 v2.1
Page 13 of 16
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.
Parameter
Value
Maximum Case Temperature
75 ºC
Maximum Ambient Temperature
70 ºC
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
Value
Operating Temperature Range
-40 ºC to + 70 ºC
Operating Humidity Range
≤ 95% RH
Storage Temperature Range
-40 ºC to + 85 ºC
Storage Humidity Range
≤ 93% RH
Operational Vibration
0.02 g²/Hz from 10 Hz to 40 Hz,
40 Hz to 500 Hz dropping 6dB per octave
0.96 m²/s³ from 5 Hz to 20 Hz,
21 Hz to 500 Hz dropping 3 dB per octave
Shock
10 G peak shock over a period of 11 ms,
3 shocks in 3 perpendicular orientations
Table 5-1: Environmental Specifications
