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Operation and Application

The knob can be used together with the left/right navigation keys. Press the

left/right navigation keys to move the cursor to a digit. Rotate the knob to

change the digit value.

4. Press [Enter] key to confirm the voltage setting value.

Press [Esc] key to exit the input mode.

4.3.2 Set the AC Frequency

The setting range of AC frequency setting value is between 45.0Hz and

1000.0Hz, which is limited by Freq-Max and Freq-Min, i.e., the Freq setting val-

ue should not be higher than Freq-Max and not lower than Freq-Min. Please re-

fer to 4.10.9 Limiting the Setting Value Range for the setting of Freq-Max and

Freq-Min.

To set Freq, refer to the steps below:

1. Press the [AC] key to set the instrument to AC output mode.

2. Press [F-set] key to position the cursor to the frequency setting value. Mean-

while, the [F-set] key will light up.

10.0V 6.00A 60.0Hz

0.00W 0.00Ip 0.00PF

3. Rotate the knob clockwise to increase the frequency setting value and anti-

clockwise to decrease the value. Set the required value.

The knob can be used together with the left/right navigation keys. Press the

left/right navigation keys to move the cursor to a digit. Rotate the knob to

change the digit value.

4. Press [Enter] key to confirm the frequency setting value.

Press [Esc] key to exit the input mode.

4.3.3 Set the AC Phase Angle

IT-M7700 series supports the initial phase and stop phase of the output wave-

form settable to meet different test requirements. The initial phase and stop

phase are set in the range of 0.0°~359.9°. By adjusting the phase angle, the

user can test the rush current of the product at different positions which is widely

applied to various switch current impulse tests and various rectifiers test. The

setting steps are as follows:

1. Press the composite keys [Shift] + [V-set](Config) to enter into the configu-

ration menu interface.

2. Rotate the knob to select On Phase and press [Enter] key to confirm.

3. Use left and right keys and rotate the knob to set the starting phase angle.

Press [Enter] key to confirm.

4. Rotate the knob to select Off Phase and press [Enter] key to confirm.

ITech IT-M7700 Series User Manual

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