Tektronix 4000 Series, Руководство пользователя

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Acquire the Signal
Quick Tip
Use the zoom feature to see multiple cycles of the signal in the upper part, and a single cycle in the lower part of the display.
(See page 203, Using Wave Inspector to Manage Long Record Length Waveforms .)
When setting up the logic probe, the fi rst set of eight leads (pins 7 to 0) on the logic probe are marked GROUP 1 on the lead
box. The second set (pins 15 to 8) is marked GROUP 2.
The lead for the fi rst channel in each group is colored blue for easy identi fi cation while you connect the logic probe to the
device under test. The other leads are gray.
Digital channels store a high or low state for each sample. The threshold that separates high from low can be set separately for
each channel.
When and Why to Turn On MagniVu
For MSO4000 series only, MagniVu allows you to have higher resolution to accurately determine edge placement. This helps
you to make precise timing measurements on digital edges. You can see up to 32 times more detail than with normal digital
channel sampling.
The MagniVu record is acquired in parallel to the main digital acquisition and is available at any time, running or stopped.
MagniVu provides an ultra high resolution view of your data sampled at a maximum resolution of 60.6 ps for 10,000 points
centered around the trigger.
NOTE. MagniVu centers itself around the trigger point. If you turn MagniVu on while using a large record length and you are
looking somewhere other than the trigger point, then the digital signal may be off screen. In most of these cases, you can fi nd the
digital record by looking for the digital signal in the upper overview and panning accordingly.
114 Tektronix 4000 Series Oscilloscopes User Manual