Tektronix TDS1000- Instrukcja Użytkownika Pobierz pdf (Strona 125)

Reference

TDS1000/2000-Series Digital Oscilloscope User Manual

107

Knobs and Buttons

LEVEL or USER SELECT Knob. Use to control the Trigge r Level,

Trigger Holdoff, Video Line Number or Pulse Width. The primary

function of this knob is to set the trigger level. When a n alternative

function is active, the USER SELECT LED lights below the knob.

USER SELECT Description

Holdoff Sets the amount of time before another trigger event can

be accepted; to switch between the Trigger Level and

Holdoff functions, change the Trig Knob option in the

Horizontal Menu

Video line number Sets the oscilloscope to a specific line number when the

Trigger Type option is set to Video and the Sync option is

set to Line Number

Pulse width Sets the w idth of the pulse when the Trigger Type option is

set to Pulse and you select the Set Pulse Wdith option

SET TO 50% Button. Use the SET TO 50% button to quickly stabilize a

waveform. The oscilloscope automatically sets the Trigger Level to

be about halfway be tween the minimum and maximum voltage

levels. This is useful when you connect a signa l to the EXT TRIG

BNC and set the trigge r source to Ext or Ext/5.

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