Keysight Technologies DSO-X 2002A, Руководство пользователя

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38 Keysight InfiniiVision 2000 X-Series Oscilloscopes User's Guide
1
Getting Started
11. Additional
waveform
controls
The additional waveform controls consist of:
• [Math] key — provides access to math (add, subtract, etc.) waveform
functions. See Chapter 4 , “Math Waveforms,” starting on page 71.
• [Ref] key — provides access to reference waveform functions. Reference
waveforms are saved waveforms that can be displayed and compared
against other analog channel or math waveforms. See Chapter 5 ,
“Reference Waveforms,” starting on page 85.
• [Digital] key — Press this key to turn the digital channels on or off (the
arrow to the left will illuminate).
When the arrow to the left of the
[Digital] key is illuminated, the upper
multiplexed knob selects (and highlights in red) individual digital
channels, and the lower multiplexed knob positions the selected digital
channel.
If a trace is repositioned over an existing trace the indicator at the left
edge of the trace will change from D n designation (where n is a one
digit channel number from 0 to 7) to D *. The "*" indicates that two
channels are overlaid.
You can rotate the upper knob to select an overlaid channel, then rotate
the lower knob to position it just as you would any other channel.
For more information on digital channels see
Chapter 6 , “Digital
Channels,” starting on page 89.
• [Serial] key — This key is used to enable serial decode. The multiplexed
scale and position knobs are not used with serial decode. For more
information on serial decode, see Chapter 7 , “Serial Decode,” starting
on page 107.
Digital channels and serial decode cannot be on at the same time. The
[Serial] key takes precedence over the [Digital] key. Serial triggers can
be used when digital channels are on.
• Multiplexed scale knob — This scale knob is used with Math, Ref, or
Digital waveforms, whichever has the illuminated arrow to the left. For
math and reference waveforms, the scale knob acts like an analog
channel vertical scale knob.
• Multiplexed position knob — This position knob is used with Math, Ref,
or Digital waveforms, whichever has the illuminated arrow to the left.
For math and reference waveforms, the position knob acts like an
analog channel vertical position knob.