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Getting Started

The user press the complex keys to enter into the menu interface. The menu is

divided according to the function item and the corresponding operation is set in

the lowest level menu item. For example, the key beeper is set in System→-

Beep. Set the Beep item to off or on. Please refer to 1.7 Configuration Menu

Function, 1.8 System Menu Function and the corresponding chapters for de-

tailed menu description.

After entering the menu interface, the screen displays the optional menu. Rotate

the knob to view the menu items. When the number in front of the menu item is

blinking, indicates this item is selected currently. Press [Enter] key to enter the

selected menu item and press [Esc] to exit the menu.

3.4 On/Off Control

• The [On/Off] key is used to turn the output/input on or off under

normal circumstances. Even if the instrument is in control by PC or

the keyboard is locked, the [On/Off] is still valid.

• The [On/Off] key light is off and turning the output off does not

place the instrument in a safe state. Hazardous voltages may be

present on all output and guard terminals. Putting the equipment

into an output-off state does not guarantee that the outputs are

powered off if a hardware or software fault occurs. See the cautions

about connecting the test lines before connecting test lines.

You can press the [On/Off] key on the front panel to control the output status of

the power supply. If the [On/Off] key light is on, indicates that the output is

turned on. If the [On/Off] key light is off, indicates that the output is turned off.

When the output of the power supply is on, the operating status flag (CV/CC/

CW) on the VFD will be illuminated.

It is recommended that you turn on the [On/Off] after the power supply is

connected to the DUT. If the power supply has no output after the output is

turned on, check the voltage and current setting value, set the voltage and

current to a non-zero value, and then turn on the output.

ITech IT-M3900C Series User Manual

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