Cinterion
®
DGL61-W Hardware Interface Description
4.7 Automatic thermal shutdown
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DGL61-W_HID_v07
2021-02-17
Public / Preliminary
Page 27 of 42
4.6.4
Disconnecting power supply
The DGL61-W can be disconnected at any time because the DGL61-W is protected against
sudden power loss (USB disconnection).
4.7
Automatic thermal shutdown
An on-board NTC measures the temperature of the built-in Java module. If over- or under-tem-
perature is detected on the module the DGL61-W automatically reseted to avoid thermal dam-
age to the system.
specifies the ambient and internal board temperature threshold for
the DGL61-W.
The automatic restart procedure is equivalent to the power-down initiated with the AT^SMSO
command, i.e. DGL61-W log off from the network and the software enters a secure state avoid-
ing loss of data.
Alert messages transmitted before the DGL61-W switch off are implemented as Unsolicited
Result codes (URCs). For details see the description of AT^SCTM command provided in
.
4.8
RTC
The internal Real Time Clock (RTC) of the DGL61-W retains the time and date as long as the
DGL61-W is connected to the Host and handles the alarm function. The AT+CCLK command
serves to set the time and date, and AT+CALA specifies a reminder message. See
for de-
tails.
However, please note that the Alarm function described in
, Section AT+CALA, can only be
used to set a reminder message, but not to configure the DGL61-W to wake up from Power
Down mode, because the DGL61-W will be started automatically after shutdown.
