Unipulse F331, Руководство по эксплуатации

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18
5 SETTING OF FUNCTIONS
18
SETTING OF FUNCTIONS
Chapter
5
5-3.
Near zero
By this function, it is detected that the indicated value is near zero.
ON condition: | indicated value | ≦ near zero setting value (0 is excluded.)
OFF condition: | indicated value | > near zero setting value
5-4.
Comparison timing
Set the operating condition of HI-LO limit comparison.
Always: Comparison is always performed.
NZ: Comparison is performed when near zero is OFF.
Hold/Judge: Comparison is performed when indicated value is held
(external judging input is ON when hold mode is OFF).
NZ:+Hold/Judge Comparison is performed when near zero is off and indicated value is held
(external judging input is ON when hold mode is OFF).
5-5.
Digital offset
This function subtracts a set value from the indicated value. If you make digital offset , the value
which is obtained by subtracting the set value from the indicated value will be displayed. This is
convenient when you cannot obtain zero by unloading the equipment for some reason or when you
want to give offset.
(Indicated value to be displayed) = (Actual indicated value) - (Digital offset setting value)
5-6.
Moving average filter
This function restrains the indicated value from fluctuating by moving-averaging the A/Dconverted
data. The moving average times can be selected in the range of OFF (1 time) - 512 times. With an
increasing number of moving average times, the indicated value becomes more stable, while the
response becomes slower. On the other hand, with a decreasing number of moving average times,
the response becomes faster, while the indicated value becomes easier to fluctuate.
5-7.
Digital low pass filter
This low pass filter cancels undesired noise components by filtering the A/D-converted data. Set
the cutoff frequency like a low pass filter in an analog circuit. The cutoff frequency can be selected
from 3, 6, 12Hz. Select an optimum value according to the type of measurement and setting
environment.
Near zero ON/OFF is closely related to the Comparison timing.
See "5-4.Comparison timing" on page 18.
Point