Keithley 177 Instruction Manual page 38

Table
5-11.
Adjustment
of
Battery
Charge Voltage
Step
Item/Component Required Condition
Remarks
1
Instrument
off.
2
R301
Turn
full
CCW
(maximum
charge
rate).
3
BT301
Monitor
battery voltage
for>9.8V.
Fully
charged
cells
require several
minutes to
reach
this level.
Dis-
charged
cells
require several
hours.
CAUTION
Charging
to
>
10V
for
longer
than 30 minutes
will
reduce battery
life.
4 R301
When
cells
reach 9.8V,
turn
DMM
on and
adjust to maintain
9.8V
across
BT301