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5-3. Low voltage monitoring

 Therearefourlowvoltagedetectionlevelsonthehardwareofthedevice.

Level Content Operation Action on next start-up

VDET1 Warning on voltage reduction of

mainbattery

Display of warning on

voltage reduction of main

battery

―――――

VDET2 Power OFF due to voltage

reductionofmainbattery

PowerOFF Resume (with warning

messageonstart-up)

VDET3 Emergency power OFF due to

voltagereductionofmainbattery

CriticalpowerOFF Warm boot (with warning

messageonstart-up)

VDETPC Power OFF due to PC voltage

reduction

PowerOFF Resume (with warning

messageonstart-up)

 Voltagemonitoringofthemainbattery

English indication Details

Status External Externalpowersource The power is supplied from an external power source

andchargingiscompleted.

Charge Batteryisundercharging The power is supplied from an external power source

andchargingisinprogress.

Normal Mainbattery Thedeviceisbatteryoperated.

Level 1 O.K. Thebatteryis fully charged orthe remaining power of

thebatteryissufcientforoperationofthedevice.

2 Low Theremainingpowerofthebatteryishalforless.

3 Verylow WhenVDET1isdetected.

 <Thestatusandthelevelofthemainbattery>

 Thebatterystatusisusuallycheckedata5-secondinterval.

 OnlyduringthepropertyofPowerManagementisdisplayed,thebatterystatusischeckedata1-second

interval.

 Calculatetheaverageoftheprevious10dataontheADconverterforthepowersupplyvoltage,categorize

thevaluesinto"Verylow(10%)","Low(25%)",and"O.K.(75%,100%)"anddisplayintext.Occurrenceof

VDET1means10%.

Casio PX-780 User Manual

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