DPU/DO - Page 10 - REV. 5/25/00
Power Connection
A.) INTERNALLY POWERED: The System Diagnostic Unit can be run on internal battery
power. The battery is charged by a
UL Listed
120VAC to 12VDC wall-mount transformer
which must be connected to a 120 VAC outlet. The output of the transformer is class 2, 12 VDC
at 800 ma. The cord from the transformer plugs into a special power connector on the front of
the unit. The battery will reach a full charge after twelve hours of charging time, which gives up
to eight hours of continuous battery-powered operation. The unit need not be turned on during
battery charging. The unit comes equipped with an automobile cigarette lighter adapter. This
allows the unit to be charged while in transit. The unit may also be run directly with the power
transformer plugged into a wall outlet. The unit will need to be charged when the display begins
to fade or go blank. Another indication the unit needs to be recharged is when the diagnostic
creates a bad left sweep on the controller to which it is connected. The illustration below shows
the System Diagnostic Unit and its cables and connections.
B.) EXTERNALLY POWERED: As of October 1998, Spacesaver has changed the diagnostic unit
to get its power from the logic board eliminating the need for internal batteries, the charger unit
and power jack. The logic board provides power to the unit from either J10 or J26 (J12 or J13 for
Power Pro entry sensor transmitters) via a separate connector. In most cases the logic board will
have sufficient power. If excess power draw is encountered, extra options (entry sensors etc.) may
be unplugged and temporarily jumped out during diagnostic use only. Be sure to restore jumped
out options and test when finished.
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Spacesaver
SWITCH
POWER
120VAC
12VDC
POWER
TRANSFORMER
COMMUNICATION
CABLE
CABLE
STORAGE
TRANSFORMER
STORAGE
AUTO ADAPTOR
STORAGE
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-- Internally Powered Unit--
