Model 820 Technical Reference Manual
Turning Off the Model 820
2-11
Step 1
To manually check battery voltage, simply press the
U
B
keys. Information similar to the follow-
ing will display:
Remember, pushing a button can
produce small low-level noises
which can affect your readings. In
addition, the Model 820 momen-
tarily pauses the current measure-
ment whenever a key is pressed (in
order to interpret the keyboard
event). Therefore, where possible,
do not press the
B
key during a
valid event you wish to measure.
The first screen (a) displays the
percentage of power left in the bat-
tery, an internal power source,
“INT”; or indicates external
power is being used, “EXTV.”
The second screen (b) gives revi-
sion number and date.
Turning Off the Model 820
To turn off the Model 820, simply press the
UO
key.
The instrument will not allow itself
to be turned off until in (Stop)
mode. This feature will insure that
no important data is lost.
