Low-Pass Filter Characteristic - KYOWA DPM-900 Series Instruction Manual

9-2 LOW-PASS FILTER CHARACTERISTIC

Section 9-2-1 shows the characteristic of the low-pass filter incorporated in the DPM-900/950 series. In
section 9-2-1, the frequency characteristic is normalized against a cutoff frequency. About the relation
between the amplitude and the phase, first obtain the ration of F/Fc, and then read it from the diagram
below.
In addition, frequency-response characteristic when cutoff frequency of the DPM-911/912/913 or
DPM-951/952 is set to FLAT is shown in the section 9-2-2 and 9-2-3.
9-2-1 Low-pass Filter Characteristic
4
2
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
0.001
Phase
0.01 0.1
[F/Fc] F: Signal Frequency
周波数[F/Fc]
44
1
Fc: Cutoff Frequency
20
10
0
-10
Amplitude
-20
-30
-40
-50
-60
-70
-80
-90
-100
10