Nicad Battery Operation - Welch Allyn Grason-Stadler GSI 17 Series Service Manual

C .
Connect the battery pack power cord (A) to the power
cord receptacle on the rear panel of the audiometer.
For line power operation (mains) or recharging, connect
the instrument power cord (B) to the receptacle on the
lower edge of the battery pack (perpendicular to the
instrument rear panel).

10.3 NiCad BATTERY OPERATION

The GSI 17 battery option is supplied with an installed,
rechargeable NiCad battery pack.
fully charge, and will provide about 22 hours of continuous
The green LED on the pack itself will be lit when
operation.
charging is in progress.
the front panel LCD when the battery charge is getting low so the
operator will know when to recharge the batteries.
is lit, the instrument will operate (continuously) for about two
hours before it shuts down completely.
In no instance will loss of battery power
affect instrument calibration.
Although no damage to the rechargeable NiCad
batteries will occur if the pack is left
charging for more than the 18 hours required
for a full charge, the batteries should not be
left charging for extended periods (i.e.
several days) because the useful life of the
rechargeable NiCad pack will be shortened.
Lucas GSI recommends unplugging the battery
pack power input cord from the rear of the
audiometer and plugging the main line power
cord into this jack if main line power is to
be used most of the time.
save battery life, the GSI 17 has a special "Sleep
To
audiometer
which the
The
operation.
because the LCD will show three dash lines (- - -).
the instrument the operator only needs to press the Present
There is no danger of presenting a loud tone to the test
when the instrument "wakes up" " because no tone is presented until
audiometer is
the
automatically resets its output to 0 dBHL.
If the GSI 17 is operated until the battery charge
below an acceptable
function at all.
The words LO BAT will be illuminated on
NOTE:
CAUTION:
will shut down after
operator will know the instrument is
awake. In
voltage level,
The display will be blank except for the LO BAT
(See Figure 10-2).
It requires about 18 hours to
5 minutes of no
addition, the
the
instrument
When LO BAT
Mode" in
"asleep"
To "wake up"
Bar.
subject
instrument
has dropped
will not