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To use Auto Glitch Detect

Press

Display

Make sure the

Auto Glitch Detect Enable

softkey is highlighted. The

Auto Glitch Detect feature is enabled upon powerup, and puts the logic

analyzer in glitch detect mode for all time base speeds slower than 1

s/div.

Preferred Mode of Operation

The preferred mode of HP 54620A/C operation is Auto Glitch Detect enabled.

However, there might be a situation that requires the use of the instrument’s full

8K memory to capture the waveform of interest. This can be accomplished by

selecting Auto Glitch Detect Disable mode. In this mode you will have no

indication that the waveform might be undersampled.

When Auto Glitch Detect is disabled, aliasing can occur, which produces

misleading information for data reconstruction. See “Glitch Detection” in

chapter 4.

The following display shows no aliasing with Auto Glitch Detect enabled; the

waveform appears as expected when expanded.

Waveform Display with Auto Glitch Detect Enabled

Figure 11

Making Analyzer Measurements

To use Auto Glitch Detect

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