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4-3. Digital Filter Setting
4-3-1. Overview
Filter basic
The DL-2052 internal digital filter converts the analog input signal into digital format
before passing it to internal circuits for processing. The filter affects the amount of
noise included in the measurement result.
Filter type
The digital filter averages a specific number of input signal samples to generate one
reading. The filter type defines the averaging method. The following diagrams show
the filter difference as an example of averaging 4 samples per reading.
Moving :MOV
(default)
Moving filter takes in one new sample and discards the oldest
sample per reading. This is the default behavior when the
digital filter is not specified, and is recommended for most
applications.
1
Sample #
1st reading Sample 1 - 4
2nd reading Sample 2 - 5
3
2
4
5
6
7
8
9 10 11 12
3rd reading Sample 3 - 6
Repeating
：
REP
Repeating filter renews the whole samples per reading.
1
Sample #
1st reading
Sample 1 - 4
2nd reading
Sample 5 - 8
3
2
4
5
6
7
8
9 10 11 12
3rd reading
Sample 9 - 12
Filter count
Filter count defines the number of samples to be averaged per reading. More samples
offer low noise but long delay. Less samples offer high noise but short delay.
Range
2 ~ 100
4-3-2. Filter setting
Turn on Filter
1. Press the Shift key followed by the MX/MN
(Filter) key.
1st display
Shows the filter count
2nd display
Shows the filter type (flashing)
2.
Select the filter type using the Up/Down key.
3.
Move the cursor to filter count using the Left/Right
key. Change the value using the Up/Down key.
4.
Press the ENTER key to confirm editing. The Filter
indicator appears on the display.
