Model 820 Technical Reference Manual
Understanding the Model 820 Screen
2-9
Understanding the Model 820 Screen
The operating screen for the Model 820 has several fields
which vary according to the keys pressed on the keypad.
The most pertinent information is generally at the top and cen-
ter to left and instructions are generally on the bottom center to
left. Several characters are consistent in their appearance. We
will now turn the Model 820 on and examine a variety of pos-
sible screens.
Turning On the Model 820
Step 1
Press
O
to power the Model 820 and initiate a self
test:
Three successive displays will
appear while the meter stabilizes
for 10-45 seconds. The first dis-
play has copyright information
and appears only 1 to 2 seconds
Step 2
The next display automatically appears.
The second display shows the pro-
duction date and the serial number
uniquely assigned to your Model
820. This message appears for
only 1 or 2 seconds.
S12
U
key active (secondary function in
Orange lettering).
SrS
If the Model 820 is still stabilizing upon
warm-up and the R/S (Run) button is pushed,
(r) will flash alternately with (S).
Symbol
Functionality
M
