User Manual

CHAPTER 4. MEASUREMENT SETUP 22
Line lter It is inserted in the voltage and current measurement circuit and has direct inuence on
measurement of the voltage, current and power. When the line lter is switched on, noise and high-frequency
components from the inverter or distortion waveform can be ltered. The cuto frequency is 500Hz.
4.4 Averaging Function
1. Select ⇒ SET UP ⇒ AVERAG SET to enter the conguration page of the averaging function.
2. Press to select the parameter to be congured (blue background), and press the soft key
corresponding to the required value. See Figure 4.4.
3. Press the Enter button to conrm the setting.
Figure 4.4: Averaging Settings
Character Function description
State Enable or disable averaging.
Mode Average mode Line=linear or Exp=cumulative moving average
Type Averaging type. MOVING: moving averaging REPEAT: repeated averaging
Count Set the times of the averaging function.
Table 4.2: Average Settings Menu
Note:
• If the mode of the averaging function is set as EXP (index averaging), the attenuation constant can be set.
• If the mode of the averaging function is set as LINE (linear averaging), the averaging times can be set.
4.4.1 Index averaging
D
n
= D
n−1
+
M
n
− D
n−1
k