Keysight DSOX1202A, Руководство пользователя

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Getting Started
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Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide 31
11. Trigger controls The Trigger controls determine how the oscilloscope triggers to capture data. These controls consist
of:
• Level knob — Turn the Level knob to adjust the trigger level for a selected analog channel.
Push the knob to set the level to the waveform's 50% value. If AC coupling is used, pushing the
Level knob sets the trigger level to about 0 V.
The position of the trigger level for the analog channel is indicated by the trigger level icon (if
the analog channel is on) at the far left side of the display. The value of the analog channel trigger
level is displayed in the upper-right corner of the display.
• [Trigger] key — Press this key to select the trigger type (edge, pulse width, video, etc.). See
Chapter 11 , “Triggers,” starting on page 97. You can also set options that affect all trigger types.
See Chapter 12 , “Trigger Mode/Coupling,” starting on page 121.
• [Force] key — Causes a trigger (on anything) and displays the acquisition.
This key is useful in the Normal trigger mode where acquisitions are made only when the trigger
condition is met. In this mode, if no triggers are occurring (that is, the "Trig'd?" indicator is
displayed), you can press [Force] to force a trigger and see what the input signals look like.
12. Vertical
controls
The Vertical controls consist of:
• Analog channel on/off keys — Use these keys to switch a channel on or off, or to access a
channel's menu in the softkeys. There is one channel on/off key for each analog channel.
• Vertical scale knob — Use the knob marked to change the vertical sensitivity (gain) for
the selected analog input channel.
Push the vertical scale knob to toggle between fine and coarse adjustment.
The default mode for expanding the signal is about the ground level of the channel; however, you
can change this to expand about the center of the display.
• Vertical position knob — Use this knob to change the selected analog input channel waveform
vertical position on the display.
The voltage value momentarily displayed in the upper right portion of the display represents the
voltage difference between the vertical center of the display and the ground level (
) icon. It
also represents the voltage at the vertical center of the display if vertical expansion is set to
expand about ground.
For more information, see Chapter 3 , “Vertical Controls,” starting on page 47.
13. [Wave Gen] key On G-suffix models that have a built-in waveform generator, press this key to access waveform
generator functions. See Chapter 19 , “Waveform Generator,” starting on page 203.
14. [FFT] key Provides access to FFT spectrum analysis function. See Chapter 5 , “FFT Spectral Analysis,” starting
on page 57.
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