39
730
VIEW
1. Press the Harmonics key;
2. Select the "PLL.src" setting menu;
3. Confirm;
4. Set the PLL source signal;
5. Confirm;
6. Exit and close the setting menu.
Following the above steps 1~3, the PLL source setting options will be displayed in Display Bar C. You can switch between
the PLL source options with navigation (up and down) keys, and then press "Enter" key to complete the setting. The
instrument returns to the superior menu to display, and pressing the "Hold/ESC" key can exit the setting interface.
Description
NOTE: PLL source options depend on the number of input units connected to the instrument, with channel self-adaption
supported.
PLL source
Description
PLL source
Description
U1
Set PLL source to voltage of unit 1
I1
Set PLL source to current of unit 1
U2
Set PLL source to voltage of unit 2
I2
Set PLL source to current of unit 2
U3
Set PLL source to voltage of unit 3
I3
Set PLL source to current of unit 3
5.4 Setting of PLL Source
Set the PLL (Phase Locked Loop) for determining the fundamental frequency; frequency synchronization source, and the
fundamental frequency is the reference for the number of harmonic measurements. Selecting the input signal with less
distortion or fluctuation as PLL source can make harmonic measurement more stable.
Operating steps
