Panasonic MINAS A6 Series Operating Instructions Manual page 331

4. Manual Gain Tuning (Basic)
Suppression of Machine Resonance
Notch width and depth
The width of the notch filter is the ratio of the width of –3dB attenuation frequency band
with respect to the notch frequency at its center when depth is 0, and the value is as
shown in the table below.
The notch filter depth indicates I:O ratio where the input at the center frequency is com-
pletely shut with setup value 0 but fully received with setup value 100. The table below
shows this value in dB on the right.
Notch width
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
10
5
0
−3[dB
−5
−10
−15
−20
−25
−30
10
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Band width/center frequency
A6 series
0.5
0.59
0.71
0.84
1
1.19
1.41
1.68
2
2.38
2.83
3.36
4
4.76
5.66
6.73
8
9.51
11.31
13.45
16
Notch filter frequency characteristics
100
Frequency [Hz]
Notch depth I/O ratio
0 0
1 0.01
2 0.02
3 0.03
4 0.04
5 0.05
6 0.06
7 0.07
8 0.08
9 0.09
10 0.1
15 0.15
20 0.2
25 0.25
30 0.3
35 0.35
40 0.4
45 0.45
50 0.5
60 0.6
70 0.7
80 0.8
90 0.9
100 1
1000
1
2
[dB]
3
−∞
−40
−34
−30.5
−28
−26
−24.4
−23.1
4
−21.9
−20.9
−20
−16.5
−14
−12
−10.5
−9.1
5
−8
−6.9
−6
−4.4
−3.1
−1.9
−0.9
0
6
Depth 0, width 4
Depth 50, width 4
Depth 0, width 8
7
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