Installation Manual

AGS2-W Hardware Interface Overview
5.2 Operating Temperatures
28
AGS2-W_HIO_v01.000 Page 22 of 33 2012-05-16
Confidential / Preliminary

5.2 Operating Temperatures
Please note that the module’s lifetime, i.e., the MTTF (mean time to failure) may be reduced, if
operated outside the extended temperature range. A special URC reports whether the module
enters or leaves the extended temperature range (see [1]; AT^SCTM).
Note that 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
current supply voltage.
When data are transmitted over GPRS the module automatically reverts to a lower Multislot
Class if the temperature rises to the limit specified for normal operation and, vice versa, returns
to the higher Multislot Class if the temperature is back to normal.
Table 10: Board temperature
Parameter Min Typ Max Unit
Normal operation -30 +25 +85 °C
Extended operation
1
1. Extended operation allows normal mode speech calls or data transmission for limited time until automatic
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 shutdown
2
Temperature measured on AGS2-W
board
2. Due to temperature measurement uncertainty, a tolerance of ±3°C on the thresholds may occur.
<-40 --- >+90 °C