Agilent Technologies 54657A Guía de usuario descargar pdf (Pagina 69)

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Recall Setup Recalls the previously stored front-panel setup that was

saved with the waveform for the trace selected.

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Edit Label Used to enter a 20 character label that identifies the stored

waveform. See "Create a Label for Trace Memory" later in this chapter for

more information.

Turn the knob closest to the Cursors key to move the cursor in

the character area to select the desired trace location (from 1 to

100).

Trace status is displayed on the screen. Information includes the edit label

(or trace number if label has not been entered), and the time and date the

memory was saved or cleared.

Select the desired softkey (Save, Clear, or Recall).

Saving Traces Hint

For traces 1 to 3, the trace is saved in the non-compressed state. For traces

greater than 3, the trace is saved in 64 Kbytes of nonvolatile trace memory with

data compression. After a compressed trace is saved, the available area (in

percent) is displayed.

The number of traces that can be saved in 64 Kbytes of nonvolatile trace

memory is dependent on the trace complexity and the current oscilloscope

configuration. For example:

Up to 97 simple traces (e.g., square wave) can be stored.

As few as four complex traces (AM modulated sine wave) can be stored.

Saving a trace with autostore information or the grid takes more memory.

In most cases, if the information is not needed, turn it off to save memory.

The data compression algorithm uses run length encoding to compress the data.

Where possible, runs of identical bits are stored as a single word

(1 identification bit and 15 length bits).

The Review Traces feature is useful when observing test failures.

To store only the front-panel setup, blank the screen prior to saving the trace.

The edit label function can be used to identify the setup.

Operating the Measurement/Storage Module

To save or recall traces

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Agilent Technologies 54657A Guía de usuario Pagina 69