HP E6380-90019 Manual do Utilizador descarregar pdf (Página 137)

Chapter 5 137

Analog Measurements - Screens and Control Fields

Internal Level (div)

Internal

This field selects the trigger source.

• Internal uses the signal being displayed for triggering.

• Ext (TTL) uses the EXT SCOPE TRIGGER INPUT for triggering.

This is a TTL level trigger (approximately 2.5 V).

Screens on which this field is displayed

SCOPE: trigger controls menu

Level (div)

This control is divided into two fields:

The upper field (0.00) sets the internal trigger level as a function of

vertical divisions. The trigger level is indicated by small pointers that

appear on each side of the screen (only used for internal triggering).

The lower field (Pos/Neg) specifies whether triggering happens when

the waveform being measured is positive-going (Pos

), or negative-going

(Neg

Screens on which this field is displayed

SCOPE: trigger controls menu

Main Menu

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HP E6380-90019 Manual do Utilizador Página 137