User Guide
28
3. Adjust the settings based on the following table:
P
ARAMETER
D
ESCRIPTION
O
PTIONS
Ext DC Ref
Calibrates the power level indicator accord-
ing to the type of external DC source. By
default, this is set to 12V Ext DC.
Select the appropriate option for the
external DC power.
• 12V Ext DC
• NiMH
• Expanded NiMH
• 12V Lead Acid
• 14V Li-ion
• Full Range
Ext DC Loss
Choose what action the 688 should take
when external power is removed or voltage
drops below the set threshold. By default,
this is set to Switch Power Source.
• Switch Power
Source
• Shut down
L
If the Ext DC Loss setting is con
fi
gured to Switch Power Source when
external power is lost, but there are no internal batteries with ade-
quate voltage in the 688, then automatic PowerSafe shutdown will
occur.
L
SL-6 settings are only enabled when an SL-6 is attached to the 688.
PowerSafe
When all connected power sources are depleted or power is lost unexpectedly,
the PowerSafe™ circuitry activates. The 688 displays a warning, stops any ac-
tive recordings,
fi
nishes writing
fi
les, and shuts down. The PowerSafe battery
powers the 688 during this time. This feature ensures that
fi
les are protected
even in the event of unexpected power loss.
L
The PowerSafe battery recharges from the active power source only when the 688
is powered on.