7-10
Setting and Viewing Advanced Functions
Model 820 Technical Reference Manual
Use the
d
key to scroll through the fields. Use the
m
,
r
and
e
keys to make any changes desired within each
field.
Figure 7-1
Exceedance diagram
The diagram above is an example of an exceedance with
markings of explanation.
It should be noted here that additional parameter settings have
been added out of numerical sequence to satisfy additional
needs found in the field. These will now be explained:
• 161 - Timed EXCD Per.: (mm:ss)
Exceedance Time history is
recorded from 10 samples before
exceedance to 10 samples after
this period.
• 162 - Excd Trigger: [Level, PassBy]
Must be in [Level]. [Passby]
treated later.
• 163 - Excd Time: [Start, Max]
Start: This setting will begin the
exceedance measurement as it
occurs.
Max: This setting will register the
measurement at the Exceedance
maximum point.
____________
T
max
L
max
___________Threshold______________________
________
______Duration____________
Start of
Exceedance
End of
Exceedance
Hysteresis
(T
start
)
