Getting Started 1
Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide 37
10. [Auto Scale]
key
When you press the [AutoScale] key, the oscilloscope will quickly
determine which channels have activity, and it will turn these channels
on and scale them to display the input signals. See “Use Auto Scale" on
page 30.
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 99.
•[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 Dnn designation (where nn is a one
or two digit channel number from 0 to 15) 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 103.
•[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 123.
• 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.
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