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126
S
E
CT
ION 3
Us
ing
the L
oggin
g
Fu
nctio
n
Z550
Operation Manual
SECTION 3
Setting Measurement Conditions (Expert Menu)
Using the Logging Function
The logging function allows accumulating measurement values while skipping some of them. It is used to
observe the fluctuation in measurement results over an extended period of time using the Trend Monitor
and Profile Monitor screens.
The amount of data generated in one measurement is different for the Trend Monitor and Profile Monitor
screens. The maximum amount of accumulated data for each monitor screen is as follows.
Example 1: Accumulation of data once every 300 measurements
Data can be accumulated for up to 30 seconds when the logging function is not used. If the setting
is changed to "accumulate once every 300 measurements" using the logging function, it is possible
to accumulate data for a day because 100 ms
×
300
×
3000 = 90000 sec = 1500 min = 25h.
Example 2: Holding the peak value for every three measurements, and accumulating and outputting the
data (used in combination with the hold function)
Select the measurement value hold condition for each output.
p.111
It is not allowed to use the hold output and logging output together.
Monitor type
Data generated in one measurement
Maximum
amount of
accumulated
data
Trend Monitor screen
Eight output data points
3000
Profile Monitor screen
1024 height data points
300
30s
25h
When logging is not specified
When logging data once every
300 measurements
Accumulate and output
the held value.
Accumulate and output
the held value.
Accumulate and output
the held value.
Measurement
Measurement
value
Peak value
Peak value
Peak value
1
2
3
1
2
3
1
1
2
3
Free
Hold(External)
Hold(Self)
Logging
These four selections appears when [Extra set] and then [Hold&Logging] are selected.
Select [Free] if the hold output and logging output are not used.
operation.book Page 126 Monday, June 6, 2005 10:19 AM