HOW TO USE THE INSTRUMENT

4 - 57

4.13 DISPLAY FUNCTIONS

When operating in the analog mode, you can set the scope to display XY displays by selecting ’X DEFLECTION’ mode. In this mode the horizontal deflection is obtained from one of the input signals, while the analog timebase generator is turned off.

In the digital mode the ’DISPLAY’ menu is extended.

STANDARD SETTING

Start with the standard setting. This ensures that you have the correct start.

-Simultaneously press the STATUS and TEXT OFF keys.

-Connect the Probe Adjust signal to channel 1.

-Press AUTOSET.

The Probe Adjust signal now supplied to the input is a square wave with a lower level of 0V and a top level of 600 mV.

ANALOG DISPLAY

X-DEFL

In X-DEFLection mode, ’XY’ displays are used for direct comparisons of two or more signals : one as a function of one or more others.

Vertical deflection is selected in the same way as for ’normal’ displays using the timebase. Horizontal deflection is obtained by selecting one of the sources as displayed in the X-DEFL menu on the screen.

-Connect a sine wave of approx 300 Hz to channel 2.

-Press AUTOSET.

Observe that the scope displays the two traces on the screen in analog mode.

-Press the DISPLAY key to enter the analog DISPLAY MENU.

-Press the X-DEFL softkey to enter the X-DEFL sub menu.

-Press the ’on off’ softkey so that ’on’ is intensified.

Two vertical lines appear on the screen.

The menu now displays the source for the X-axis intensified (’X=ch1’).

Page 102
Image 102
Fluke PM3370B user manual Display Functions, Analog Display Defl