EGS5 Hardware Interface Description
5.2 Operating Temperatures
104
EGS5_HD_v02.004
Page 81 of 123
2012-02-09
Confidential / Released
5.2
Operating Temperatures
Note: See
for further information about the NTCs for on-board and battery tem-
perature measurement, automatic thermal shutdown and alert messages.
When data is transmitted over GPRS the EGS5 automatically reverts to a lower Multislot Class
if the temperature increases to the limit specified for normal operation and, vice versa, returns
to the higher Multislot Class if the temperature is back to normal. For details see
.
Table 21:
Board / battery temperature
Parameter
Min
Typ
Max
Unit
Normal operation
-30
+25
+80
°C
Restricted operation
1
1.
Restricted operation allows normal mode speech calls or data transmission for limited time until au-
tomatic thermal shutdown takes effect. The duration of emergency calls is unlimited because automatic
thermal shutdown is deferred until hang up.
-30 to -40
---
+80 to
+90
°C
Automatic shutdown
2
Temperature measured on EGS5 board
Temperature measured at battery NTC
2.
Due to temperature measurement uncertainty, a tolerance on the stated shutdown thresholds may occur.
The possible deviation is in the range of ±3°C at the overtemperature limit and ±5°C at the undertem-
perature limit.
-40
-20
---
---
>+90
+60
°C
Table 22:
Ambient temperature according to IEC 60068-2 (without forced air circulation)
1
1.
Temperature values are based on a setup with EGS5 mounted onto an adapter without any heat genera-
ting components and connected via flex cable to the Cinterion DSB75 Evaluation Kit.
Parameter
Min
Typ
Max
Unit
Normal operation
-30
+25
+75
°C
Restricted operation
2
2.
Restricted operation allows normal mode speech calls or data transmission for limited time until au-
tomatic thermal shutdown takes effect. The duration of emergency calls is unlimited because automatic
thermal shutdown is deferred until hang up.
-30 to -40
---
+75 to
+85
°C
Table 23:
Charging temperature
1
1.
Outside the given temperature range (0°C to +45°C) no charging is possible.
Parameter
Min
Typ
Max
Unit
Battery temperature for software controlled fast
charging (measured at battery NTC)
0
---
+45
°C
