Nady Systems MPA-400, Руководство пользователя

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6
SYSTEM OPERATION AND SETUP
Powering the MPA-400
Turn on the unit using the Power ON/OFF Switch (8). The Power ON
LED (11) is lit up red indicating the MPA-400 is receiving power. The
MPA-400 is powered internally by the 12V/3.3A rechargeable battery.
A fully charged battery can power the unit for up to 2 hours of normal
operation. The unit will start charging the internal battery automatically
when the internal rechargeable battery is low. When the Low Battery ON
LED (9) is on, this means the MPA-400 needs to be charged as soon as
possible.
When charging, observe that the Battery Charging LED (10) remains
red and the LED turns green when it is completed. Do not turn on the
MPA-400 unit until the Battery Charging LED (10) indicator lights green,
the battery is fully charged and ready to power the MPA-400 alone. For
optimum use, the MPA-400 should be fully charged each time. Discon-
nect the adapter cord when charging is complete.
(Note: Shut off the unit and disconnect the AC adapter cord if the unit is
not to be used for a long period of time, making sure the battery is fully
charged before putting it away for future use.)
(Note: When the Battery Charge LED (10) does not turn green for
an extended of time (more than 7 hours) while charging or the opera-
tion time under battery power alone is less then 2 hours, the internal
12V/3.3A rechargeable battery might need replacing.)
External Power for Charger
Plug the external provided power cord (TIP +) into DC Input Socket (12).
Then plug the AC adapter plug into a standard 115VAC or 240VAC outlet
(The AC adapter will detect the line voltage automatically).
(Note: To avoid damaging your unit, use only the provided adapter cord
to be connected to the power DC Input Jack (12).
External 12V DC Supply
The MPA-400 can be powered externally supply via the DC Input Jack
(12). Connect the external power supply plug to this input jack, observing
the correct polarity as marked (TIP +). The power source should provide
16VDC regulated at 3A current. The 3A Fuse (7) is used to protect the
unit from any internal overload. Should the fuse blow, replace with the
same type 3A/250V SB (Slow-Blow).
(Note: External DC Supply will charge the internal 12V/3.3A rechargeable
battery.)