User's Manual

PCS3_HD_v01.000-03
Confidential / Preliminary
Page 24 of 101
2013-10-21
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PCS3 Hardware Interface Description
3.2 Power Supply
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3.2.1 Monitoring Power Supply by AT Command
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To monitor the supply voltage you can use the AT^SBV command which returns the averaged
value related to BATT+ and GND at the SMT application interface.
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The module continuously measures the voltage at intervals depending on the operating mode
of the RF interface. The duration of measuring ranges from 0.5s in TALK/DATA mode to 50s
when PCS3 is in Limited Service (deregistered). The displayed voltage (in mV) is averaged
over the last measuring period before the AT^SBV command was executed.