VFD current measurement of 6000 counts digial clamp meter GVDA GD169A, Below is the steps for y our reference:
1) Turn the knob to 
，and select Proper range(60/600A or 1000A), Press FUNC key until the "VFD" character is displayed
2) Then press the trigger to open the clamp, clamp the conductor to be tested, and then slowly release the trigger until the clamp are completely closed, and determine whether the conductor to be tested is clamped in the center of the pliers, if the conductor is not in the center of the pliers, additional errors will occur.
3) Read the measurement results on the display
WARNING
l Before use, use the meter to test the known voltage or current, and confirm that the meter is in good condition
l Pay special attention to safety when measuring high voltage to avoid electric shock or personal injury
l Please do not use VFD function to verify the presence of dangerous voltage or current, which may exceed the indicated value to avoid electric shock or personal injury.
Note
l Please place the measured conductor in the center of the clamp head, otherwise additional error will occur
