B&K Precision 2552-2559 - Manual - Manual (Page 49)

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Figure 28 - Horizontal Delay Menu
4. Turn the “Horizontal Position” knob (adjust window’s position) to
select the window that you need and expanded window waveform
display will show on the below half of the screen at the same time.
Trigger System
The trigger determines when the oscilloscope starts to acquire data and
display a waveform. When a trigger is set up properly, the oscilloscope
converts unstable displays or blank screens into meaningful waveforms.
Here are three buttons and one knob in the trigger area. See below:
• “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