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®
Java Terminal Hardware Interface Description
4.4 Operating Temperatures
52
PLS62T-W_HID_v01 2018-06-20
Confidential / Prelimenary
Page 49 of 91
4.4 Operating Temperatures
Note: Within the specified operating temperature ranges the board temperature may vary to a
great extent depending on operating mode, used frequency band, radio output power and cur-
rent supply voltage. Note also the differences and dependencies that usually exist between
board (PCB) temperature of the Java module and its ambient temperature.
Table 23: Temperature characteristics
Parameter Min Typical Max Unit
Normal operation
1
1. Board temperature of Java module.
-30 +85 °C
Extended operation
1,
2
2. Extended operation allows normal mode speech calls or data transmission for limited time until au-
tomatic thermal shutdown takes effect. Within the extended temperature range (outside the normal
operating temperature range) the specified electrical characteristics may be in- or decreased.
-40 to -30 +85 to +90 °C
Automatic thermal shutdown
1,
3
3. Due to temperature measurement uncertainty, a tolerance of ±3°C on these switching thresholds
may occur.
<-40 >+90 °C
Thermal resistance (R
th
)
4
2G operation (with P
th
= 1.5W)
3G operation (with P
th
= 3.5W)
4. Thermal resistance (R
th
) of the Java Terminal at the highest possible thermal power (P
th
) dissipation,
i.e., at the worst possible network conditions. Measured in still air with an air gap of at least 100mm
between the Java Terminal and other objects.
10
11.5
K/W
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