ASTRO-MED Dash 16u Краткое руководство по эксплуатации - Страница 13
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Печатать страницуInput signal into Channel #1
Stop the paper
III. Data Review
DISCUSSION
ACTION
Enter screen preview
Select Chart 4 for Preview
Toggle [TIME CURSOR]
button and move cursors near
the trigger point (dotted line)
Expand view around trigger
Expand the view further
Print the screen
Play back to paper
A trigger should be produced and the capture continues to the end. While
capturing, you should have seen the waveform for Channel #1 go from a zero
baseline in the center of the channel to a sine wave within the grid on both the
color display and the chart.
Note: you do not need to run the chart when you capture data.
[RUN / HALT]
Data capture records can be reviewed on the color display as well as on the
chart paper. Typically, the review is done on the display and then sections of
interest are printed on the paper. During review, the timebase can be expanded
or compressed to give appropriate detail of the signal.
HOW TO
[MODE] [DATA RECORD REVIEW] [SCREEN PREVIEW]
[PREVIEW SETTINGS] [SET PREVIEW FORMAT] Turn the encoder
wheel until Chart # 4 is selected. [ACCEPT WINDOW]
[TIME CURSOR A] Turn encoder wheel so A cursor is positioned just to
the left of the trigger point (dotted yellow line on the display).
[TIME CURSOR B] Turn encoder wheel so B cursor is positioned just to
the right of the trigger point (dotted yellow line on the display).
[PREVIEW SETTINGS] [SET WINDOW TO CURSORS]
[TIME CURSOR A] Turn encoder wheel so A cursor is placed just to the left of
the trigger point. [t - EXPAND ABOUT (A)] The expansion is around where
the cursor A is set.
[OUTPUT ...] Use encoder wheel to select screen print to paper.
[NEXT >>] [NEXT >>]
[EXIT PREVIEW] [SETUP PLAYBACK] [SET PLAYBACK FORMAT]
Turn encoder wheel to select format to be Y-T Chart #4.
[SET PLAYBACK WINDOW] [CHANGE METHOD] Turn encoder wheel
to select the method to show: Preset - Rregion of capture window.
[SET START POINT] Turn encoder wheel to 15%.
[SET END POINT] Turn encoder wheel to 25%. [EXIT]
[SET EXPANSION] Set t-expansion:
compress the timebase for data playback to the chart. For long data records, it
is suggested to use maximum compression for the first playback to conserve chart
paper. Then, expand the playback to get the detail you need. As you change the
starting and ending points from 100%, you can expand the playback timebase.
HEADER] Verify the Header is toggled ON.
[TRIGGER MARK] Verify the Trigger Mark is toggled ON. [EXIT]
[BEGIN PLAYBACK]
1/2. Note that you can expand or
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