Fluke PM3370B Advanced Horizontal and Trigger Functions, Trigger Mode, Press the Trigger key

4 - 34 HOW TO USE THE INSTRUMENT

4.8ADVANCED HORIZONTAL AND TRIGGER FUNCTIONS

All basic timebase and trigger functions of the oscilloscope are accessible via direct action front panel keys. More advanced functions are easily accessible via the menus behind the menu initialization keys (keys with the function in blue text).

STANDARD SETTING

Before continuing with the advanced functions, you must set the instrument to a predefined state to ensure a correct start situation.

-Simultaneously press STATUS and TEXT OFF.

-Connect the Probe Adjust signal to channel 1.

-Press the AUTOSET key.

TRIGGER MODE

-Press the TRIGGER key.

On the screen the ’TRIGGER MAIN TB’ menu is displayed. The menu functions can be selected by pressing the blue softkeys to the right of the screen. The top softkey selects the trigger mode (’edge’ or ’tv’). The lower part of the menu is optimized for the selected trigger modes.

-Press the first softkey to select ’tv’ trigger mode.

Observe that the lower part of the menu is optimized for tv applications.

-Press the first softkey to return to ’edge’.

Note : In the Digital mode, an additional selection is available. This is called "logic" or "glitch". A full description of the Logic and Glitch triggering functions can be found in Chapter 5.