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Figure 3.21 – Trigger Controls
• “TRIG MENU” Button: Press the “TRIG MENU” Button to
display the “Trigger Menu”.
• “LEVEL” Knob: The LEVEL knob is to set the
corresponding signal voltage of trigger point in order to
sample. Press the “LEVEL” knob to set trigger level to
zero.
• “SET TO 50%” Button: Use the “SET TO 50%” button to
stabilize a waveform quickly. The oscilloscope can set
the Trigger Level to be about halfway between the
minimum and maximum voltage levels automatically.
This is useful when you connect a signal to the EXT TRIG
BNC and set the trigger source to Ext or Ext/5.
• “FORCE Button: Use the FORCE button to complete the
current waveform acquisition whether the oscilloscope
detects a trigger or not. This is useful for SINGLE
acquisitions and Normal trigger mode.
Signal Source
You can use the Trigger Source options to select the signal that the
oscilloscope uses as a trigger. The source can be any signal connected to a
channel BNC, to the EXT TRIG BUS, or the AC power line (available only
with Edge Trigger).
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