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5 - 8 FUNCTION REFERENCE
The alternate and chopped modes are shown in the figures below.
Key sequence:
Toggle softkey to select ALTernate or CHOPped mode.
ANALOG MODE
Description:
You can use the yellow ANALOG key to switch from the analog mode to the digital
mode and back at any time. The signal acquisition and display functions of both
operating modes are very similar. Depending on the nature of the signal used or
the choice of the measurement, you may prefer the analog mode.
This is especially true for the following types of signals:
• amplitude modulated signals
• frequency modulated signals
• fast sweeps
• long serial data streams
• most video signals
• observing signal changes (e.g., adjustments)
The same waveform is usually displayed in the same manner, whether you select
the analog or the digital mode. However, some functions are not implemented in
both modes. For instance, the digital mode permits the viewing of pre-trigger
information. The digital mode also offers auto-range for main time base and
vertical channels. These functions are not available in the analog mode.
ALTERNATE MODE
CHOPPED MODE
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MAT4203
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TB MODE
alt chop
ST6845
9303