BGS2-E/BGS2-W Hardware Interface Overview
5.2 Operating Temperatures
26
BGS2_HIO_v01.300
Page 21 of 29
2011-03-08
Confidential / Released
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 restriced temperature range. A special URC reports whether the module
enters or leaves the restriced 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 quad band module variant 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
Restricted operation
-40 to -30
+85 to +90 °C
Automatic shutdown
1
Temperature measured on BGS2-E/BGS2-W
board
1. Due to temperature measurement uncertainty, a tolerance of ±3°C on the thresholds may occur.
<-40
---
>+90
°C
Table 11:
Ambient temperature according to IEC 60068-2 (w/o forced air circulation)
Parameter
Min
Typ
Max
Unit
GSM Call @ max. RF-Power
-40
+75
°C
GPRS Class 8 @ max. RF-Power
-40
+75
°C
GPRS Class 10 @ max. RF-Power (quad band only)
-40
+60
°C
Table 12:
Ambient temperature with forced air circulation (air speed 0.9m/s)
Parameter
Min
Typ
Max
Unit
GSM Call @ max. RF-Power
-40
+80
°C
GPRS Class 8 @ max. RF-Power
-40
+80
°C
GPRS Class 10 @ max. RF-Power (quad band only)
-40
+70
°C
