7-4
Setting and Viewing Advanced Functions
Model 820 Technical Reference Manual
section. In this example we are
viewing the Leq and Peak data
that was gathered during the his-
tory period.
Step 1
To access Time History, press
H
, and a screen sim-
ilar to the following will appear:
This display contains History
information about the measure-
ment. It was started by a key
stroke.
Step 2
Press the
d
key to sequence through the stored his-
tory data:
Press the
d
key to view other
readings.
Log
The Log key function is a Run/Stop log. It indicates how many
times the measurement was started and stopped, and at what
time.
Once a measurement is in progress, information can be exam-
ined as follows:
Step 1
Press
U
and
H
to access Log screens:
This screen gives you information
about the most current readings.
This measurement was started by a
key stroke. If it had been started by
preset alarm, “Key” would have
been replaced with “Alm”.
