Siemens AC75 - Manual (Page 489)

AC75 AT Command Set
19.5 AT^SBV
s
AC75_ATC_V01.002 Page 489 of 569 10/30/06
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19.5 AT^SBV Battery/Supply Voltage
The
AT^SBV
execute command allows to monitor the supply (or battery) voltage of the module. The voltage is
continuously measured at intervals depending on the operating mode of the RF interface. The duration of a mea-
surement period ranges from 0.5s in TALK / DATA mode up to 50s when AC75 is in IDLE mode or Limited Ser-
vice (deregistered). The displayed value is averaged over the last measuring period before the
AT^SBV
command was executed.
The measurement is related to the reference points of BATT+ and GND, both accessible on a capacitor located
close to the module's board-to-board connector. For details please refer to the Hardware Interface Description
[2] .
Syntax
Parameter Description
Supply (or battery) voltage in mV
Test Command
AT^SBV=?
Response(s)
OK
ERROR
+CME ERROR:
Exec Command
AT^SBV
Response(s)
^SBV: <value>
OK
ERROR
+CME ERROR:
Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge
4
Last
SIEMENS - + + + + + + - + -
<value>
(num)