Sutherland Hubble - Manual (Page 7)

OPERATION
Installing Batteries
Power is furnished with sixteen alkaline ‘D’ cell batteries. With
normal operation, each set will last for approximately 1,000 hours
of ON time. Install the batteries end-to-end with the negative
terminals toward the large spring. Orient them as shown in the
photo. If they are installed incorrectly, no damage will be done.
Low Battery Indication
It is unlikely battery voltage will drop significantly within a year of
listening time. However, if batteries do need replacement, the
front panel power light will dim and then extinguish. When it is
fully
extinguished, battery voltage is down about 15%.
TO AVOID ANY POSSIBLITY OF DAMAGE FROM LEAKING
BATTERIES, IT IS A WARRANTY
REQUIREMENT THAT ALL
BATTERIES BE REPLACED ANNUALLY
YOUR WARRANTY DOES NOT COVER ANY DAMAGE
CAUSED BY BATTERY LEAKAGE
Power Control
Move the momentary toggle switch to the right to turn on power. The green light will then illuminate
to show power is ON (if batteries are low it will dim, or become fully extinguished). The Hubble will
remain ON for one hour and then automatically power down. If you wish to add more operating time,
each time the toggle switch is moved to the right, another hour will be added. Yellow lights indicate
how many additional hours have been added. After initial setting, they also indicate how many hours
of ON time remain. Additional hours can
be added at any time. The yellow lights
will blink when there are fewer than 10
minutes of ON time remaining.
Move the momentary toggle switch to
left to remove ON time. Each time it is
moved, one hour will be subtracted from
the remaining .
operating time.