BATTERY MODE AND DC RECHARGEABLE BATTERIES
BATTERY MODE PLAYING TIME
The
CRITERION PREAMPLIFIER
can operate in
BATTERY MODE
for 3 to 3.5 hours of playing
time when batteries have been fully charged. When the battery charge is reduced to
12.5%, the preamplifier switches automatically to AC operation and commences to
recharge its batteries. Battery run time can be increased approximately 20% when the
front panel VFD display is switched off.
BATTERY TYPE
The
CRITERION PREAMPLIFIER
has been designed to operate with industrial grade high
current NiMH rechargeable D-cells with a capacity of 9 ampere hours. Replacement
rechargeable D-cell batteries compatible with the
CRITERION PREAMPLIFIER
can be
ordered directly from the JRDG factory.
WARNING: NO OTHER BATTERY TYPES (CARBON ZINC, ALKALINE, N
i
CAD, LITHIUM) CAN BE
USED IN THE CRITERION. ATTEMPTING TO DO SO MAY CAUSE FIRES, OR SEVERE DAMAGE TO
THE PREAMPLIFIER. ANY DAMAGE TO THE CRITERION PREAMPLIFIER RESULTING FROM THE
USE OF UNAPPROVED BATTERIES IS NOT COVERED BY THE JRDG WARRANTY.
AUTO-SWITCH
When battery level is depleted to approximately 12.5% of its full charge, the
CRITERION
switches automatically to
AC MODE
and commences to recharge its battery while
playback continues uninterrupted.
BATTERY LIFE
The NiMH memory-free feature of the batteries, and the
CRITERION PREAMPLIFIER
’s
advanced power management system, guarantee an extreme long life to the
CRITERION
PREAMPLIFIER
’s batteries.(Up to 6 years under normal use).
REPLACING BATTERIES
Twist battery caps one quarter turn counter-clockwise and remove. Tilt the front of the
CRITERION PREAMPLIFIER
up so that three batteries slide out from each compartment.
Place three new batteries into each compartment with negative (button end) facing the
rear of the
CRITERION PREAMPLIFIER
. Install battery caps by pushing in and rotating one
quarter turn clockwise.
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