Specifications

Cinterion
®
ALAS5V Hardware Interface Description
4.2 Power Up/Power Down Scenarios
96
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ALAS5V_HID_v00.030a 2019-03-20
Confidential / Preliminary
Page 81 of 124
4.2.4.3 Undervoltage Shutdown
If the measured battery voltage is no more sufficient to set up a call the following URC will be
presented:
^SBC: Undervoltage.
The URC indicates that the module is close to the undervoltage threshold. If undervoltage per-
sists the module keeps sending the URC several times before switching off automatically.
This type of URC does not need to be activated by the user. It will be output automatically when
fault conditions occur.
4.2.4.4 Overvoltage Shutdown
The overvoltage shutdown threshold is 100mV above the maximum supply voltage V
BATT+
specified in Table 4.
When the supply voltage approaches the overvoltage shutdown threshold the module will send
the following URC:
^SBC: Overvoltage warning
This alert is sent once.
When the overvoltage shutdown threshold is exceeded the module will send the following URC
^SBC: Overvoltage shutdown
before it shuts down cleanly.
This type of URC does not need to be activated by the user. It will be output automatically when
fault conditions occur.
Keep in mind that several ALAS5V components are directly linked to BATT+ and, therefore, the
supply voltage remains applied at major parts of ALAS5V, even if the module is switched off.
Especially the power amplifier is very sensitive to high voltage and might even be destroyed.