58
7
−
3. How to use the filter
The instrument has the digital filter to which the data converted into digital is stabilized by the
calculation processing.
Warning
●
When setting filter is not suitable, correct measurement can’t be made
and it may cause an unexpected accident, so care should be taken
fully.
7
−
3
−
1. Digital filter
The digital filter for the instrument can be set from “00000” to “00007”.
The averaged
−
out times of digital filter can be decided from the set value (Related function
F
−
04)
As for default, “00004” is selected.
The relations between the setting and the averaged
−
out times are as follows
:
(
Averaged
−
out times
)=
2
n
n
:
Set value
For example, when “00004” is selected, averaged out times is as follows
:
(
Averaged
−
out times
) =
2
4
=
16
(
Times
)
The tendency to the characteristic by the leveling frequency is shown in the table below.
:
Averaged out times
low
high
Resist to noise
rapid
stable
Response speed
quick
slow
7
−
4. Zero tracking
The instrument prepares the zero tracking in order to compensate for slow drift of zero.
●
Effective only when the A/Z mode is selected. (Related function
F
−
70)
7
−
4
−
1. What is zero tracking?
D
Zero tracking is a function to cancel the slow drift of zero within the constant conditions,
and also to follow the zero point of the instrument in order to stabilize zero point.
D
When the data variation within the set time with function F
−
09 is within the set value set
with the function F
−
08 against the zero point, then the input will be cancelled as the zero
point. However, when the zero point compensation for the total “
±
10 % of the maximum
display value” at the zero tracking and zero set are completed until that time, the further
directional zero tracking will not executed.