Introduction
Copyright © Itech Electronics Co., Ltd.
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1.2 Introduction of front panels
Schematic Diagram of Front Panel of IT9121 Series Power Meter and Diagram
of Key Functions.
1 USB Interface
2. Display
3. Menu key
4. Waveform Display key
5 Basic functions
6. Harmonic key
7. Integrator key
8. Setting knob
9. Arrow keys
10. Hold/Esc key
11. Enter key
12. Image Save key
13 Parameter setting key
14. Menu key
15 Power switch
1.3 Introduction to keyboard
The functions of keys on the front panel of the IT9121 series power meter are
shown in the following table.
Key tag
Name and function
Waveform Display key When this key is pressed,the waveform
corresponding to current measurement data will be displayed.
Harmonic Measurement key When this key is pressed, the
harmonic measurement results and the menu of harmonic
measurement parameter configuration will be displayed.
Basic Measurement key When this key is pressed, the
measurement data of various items will be displayed.
Integral Measurement key When this key is pressed, the integral
measurement results and the menu of integral measurement
parameter configuration will be displayed.
Menu key, used for setting relevant measurement parameters of
the power meter.
Enter key, used for saving the settings.
Image Save key
Cancel/ESC key
The front panel keyboard can be locked/unlocked when the ESC
key is constantly pressed for 5s.
The remote control mode of the power meter can be switched to
the panel operation mode when the ESC key is constantly
pressed for 5s.
