HOW TO USE THE INSTRUMENT

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VERTICAL

POSITION

POS Use the POS control to adjust the ground level to any desired vertical position on the screen.

ST6158

9303

POS

1

1

MAT4171

-Use the position control to position the line in the middle of the screen.

Observe that the channel identifier ’1-’ shifts with the trace.

-Press the AC DC GND key again to obtain ac input coupling.

Since the Probe Adjust signal is a pulse type signal with a 50% duty cycle, its mean value is at the 50% amplitude level of the input signal. When the input is ac coupled, the mean value will be displayed at the ground level of the oscilloscope. As a result of this, the displayed waveform is centered on the screen.

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Image 60
Fluke PM3370B user manual Vertical Position, Press the AC DC GND key again to obtain ac input coupling