The Scan application allows you to perform test scans to determine the proper threshold or gamma setting for a drawing. A test scan lets you preview the scanned image without saving it. You can perform a trial scan by auto feeding the drawing through the scanner or by pegging the drawing on the scanner.
How to perform a trial scan
- Start the Scan application and load your drawing list.
- Place the drawing on the scanner pegs or in the automatic document feeder (ADF).
- On the Control panel, select the appropriate feeding type from the Feed menu.
- Autofeed: Feeds the drawings through the ADF.
- Autofeed (One): Accepts one drawing from the ADF when the Scan button is pressed.
- Pegged: Scans a drawing from the flatbed each time the Scan button is pressed.
- Pegged (Many): Automatically scan a drawing from the flatbed every five to ten seconds (depending on the time required to process the drawings).
- Pan Cel: Scans a drawing that is bigger than the scanner window in separate sections.
- Click Preview. If you are manually pegging the drawing, make sure to close the scanner cover before you click the Preview button. When the scan is complete, the drawing appears in the Frame Preview panel of the Harmony.
- Adjust the image parameters. Different options appear on the Control panel depending on the scan type you selected—see Setting Up Scanning Sessions.
| Scan Type | Parameter |
| All | Speed: Adjusts the time required to scan a line (measured in lines per millisecond) at which to scan drawings, if your scanner supports variable speeds. Use the drop-down menu to set predefined speeds of Fast, Normal, or Custom. |
| Black & White | Threshold: Adjusts the exposure. |
| Greyscale |
Black Point: Use this slider with the White Point slider to adjust the contrast. Greyscale values that are less than the selected value are converted to black. White Point: Use this slider with the Black Point slider to adjust the contrast. Greyscale values that are greater than the selected value are converted to white. |
| Colour | Gamma: Adjusts the colour contrast. |
| Scan Type | Parameter |
| All | Speed: Adjusts the time required to scan a line (measured in lines per millisecond) at which to scan drawings, if your scanner supports variable speeds. Use the drop-down menu to set predefined speeds of Fast, Normal, or Custom. |
| Black & White | Threshold: Adjusts the exposure. |
| Greyscale |
Black Point: Use this slider with the White Point slider to adjust the contrast. Greyscale values that are less than the selected value are converted to black. White Point: Use this slider with the Black Point slider to adjust the contrast. Greyscale values that are greater than the selected value are converted to white. |
| Colour | Gamma: Adjusts the colour contrast. |
- Click Preview to view the changes.
- Keep adjusting these values until you get the effect you want. These values will be applied to all the subsequent drawings you scan.