Avision AV122 manual

User’s Manual Regulatory model: FF-0506/FF-0508/FF-0608S Avision Inc.[...]

Trademarks Microsoft is a U.S. registered trademark of Microsoft Corporation. Windows, and Windows Vista are either registered trademarks or trademarks of Microsoft Corporatio n in the United States and/or other countries. IBM, IBM PC are registered tradem arks of International Business Machines Corp. Other brands and product names herein are trade[...]

User’s Manual FCC Radio Frequency Interference Statement This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15 of the FCC rules. These limit s are designed to provide reasonable protection agains t harmful interf erence in a residential installation. T his equipment generates, uses, a[...]

Disposal of Waste Equipment by Users in Private Union This symbol on the product or on its packaging indicates that the product can not be disposed of with your other household waste. Instead it shou ld be sent to appropriate facilities for recovery and recycling in an effo rt to protect human health and the environment. Fore more information about[...]

User’s Manual Table of Contents 1. Introduction .............................................. 1-1 2. Scanner Installation .................................. 2-1 2.1 Installing the ADF P aper Tray Unit ................. 2-2 2.2 Installing the Out put Paper Tray .................... 2-5 2.3 Connecting the Cables ................................. 2[...]

vi 4.5 The Paper Tab .......................................... 4-24 4.5.1 Cropping ....................................... 4-25 4.5.2 Other Paper Se lection ..................... 4-28 4.5.3 Relative to Document ..................... 4-34 4.6 The Preview Tab ....................................... 4-37 4.7 The Options Tab...........................[...]

User’s Manual 1. Introduction Congratulations on your purc hase of the color sheet-fed image scanner. Avision is one of the leading companies in the world to develop high pe rformance sheet-fed scanners. Before you install and operate the new scanner, please take a few minutes to read through this manual. It provides proper instructions for you t[...]

1 2 3 1. Scanner Main Unit 2. ADF (Auto Document Feeder) Paper Tray 3. Output Paper Tray 4. USB Cable 5. Power Adapter 6. Power Cord Note: 1. Only use the AC adapter (FF-0506: HEG42-240100-7L or HEG42-240200-7L made by Hitron, FF-0508/FF - 0 608S: HEG42-240200-7L made by Hitron) included in the machine. Using other AC adapters may damage the machin[...]

User’s Manual 2. Scanner Installation Precautions  Keep the scanner out of direct sunlight. Direct exposure to the sun or excessive heat may cause damage to the unit.  Do not install the scanner in a humid or dusty place.  Be sure to use the proper AC power source.  Place the scanner securely on an even, flat surface. Tilted or uneven[...]

2.1 Installing the ADF Paper Tray Unit Attach the Paper Support to the ADF (Auto Document Feeder) Paper Tray. ADF Paper Tray Paper Support 2-2[...]

User’s Manual 2. Pull out the Paper Jam Clearing Button to open the front door to the left. 3. Insert four protrusions on the bottom of the ADF Paper Tray into the holes on the front of the scanner. Paper Jam Clearning Button Front Door Protrusions 2-3[...]

4. Insert two protrusions in the middle of the ADF Paper Tray into the holes on the top of the scanner. Protrusions Holes 2-4[...]

User’s Manual 2.2 Installing the Output Paper Tray Insert the right and left protru sion of the Output Paper Tray into the holes on the front of the scanner. Scanner Protrusion Holes Output Paper Tray 2-5[...]

2.3 Connecting the Cables Make sure the power of scanner is off. 2.3.1 Connecting to Power Plug the small end of the power adaptor into the power jack of your scanner. Insert the othe r end to an appropriate power outlet. Power Cable 2.3.2 Turning on the Power After the power cable and the USB cable have all connected, press the power switch to the[...]

User’s Manual 2.4 Installing the Software NOTE: 1). The Windows system CD may be requ ired when installing on some PC’s. 2). To ensure your computer ca n identify the USB scanner, please install scanner driver first before connecting the scanner to your computer. 3). The scanner driver contains both TWAIN driver and WIA driver. If you are runni[...]

2.5 Connecting to Computer 1. Connect the square end of the USB cable to the USB port of your scanner. Connect the rectangle end to the USB port of your computer. USB cable 2. The computer should detect a new USB device and prompt a “New Hardware Found” message. (Windows 9X/Windows ME) 3. In Windows 98SE or Windows ME, confirm that the “ Sear[...]

User’s Manual 2-9 In Windows XP, click the Next button to continue. When the XP certification screen appears, click Continue Anyway to complete the installati on. 4. When the Finish dialog is prompted, click the Finish button. 5. Click “View Manual” to view or pri nt the detailed user manual for the scanner and bundled applicati ons respectiv[...]

User’s Manual 3. Completing Your First Scan 3.1 Loading Your Paper 3.1.1 Notice on Using the ADF Before using the ADF, please make sure that your paper meets the following specif ications: • Document(s) can range in size from 3.5 by 2 inches to 8.5 by 14 inches (Legal). • Document(s) can range in weight from 16 to 28 lbs • Document(s) shoul[...]

3.1.2 Placing Your Document in the ADF Paper Tray Fanning Your Document Standard paper size should f eed easily through the scanner. To avoid occasional paper ja m when automatically feeding multiple documents, loosen the paper before loading. Document feeding Place your document with the text face down on the ADF Paper Tray. Align the two si des o[...]

User’s Manual 3.2 Verifying Your Scanner Installation To verify if your scan ner installation is correct, Avision provides you a useful test program called Avisi on Capture Tool. With this tool, you can perform simple scans and view the captured images. In addition, it helps you complete your scan at a rated speed. The following procedure describ[...]

Fit Page Actual Size Save File Path File For mat Setup Scan 3. Choose your desired file format from the Fil e Format drop down list box. (D efault is BMP, ot her choice includes TIFF, GIF, and JPEG.) 4. Type your desired folder name and file name in the File Path box. (Default is C:My ScanImage.) Note: If you do not wish to save the scanned image[...]

User’s Manual Image Selection Box 6. From the Image Selection Box, choose your desired image type for your scanned image. (Default is Front B&W) If you have a duplex scanner, choose Front and Rear to scan both sides of your document. 7. Click OK to quit the Scanner Properties dial og box. (To learn more details about the Scanner Properties di[...]

Status Bar Fit Page View Thumbnail View 11. You can view the scanned image in Fit Page ( ) or Actual Size (100%) button ( ) from the Viewing toolbars at the right side. 12. Click t he Close box or Quit f rom the File menu t o exit the Scan Validation Tool. 3-6[...]

User’s Manual 3-7 3.3 A Glance of the Scanner Properties Dialog Box 1 2 3 4 5 6 7 8 1. Tab Options Choice: Image, Compression, Color Dropout, Paper, Options, Settings, Information. 2. Image Selection Box Choose your image type and the side of document you wish to scan. Options vary based on type of scanner. 3. Brightness : Adjust the brightness l[...]

User’s Manual 4. Using the Scanner Properties Dialog Box The Scanner Properties dialog bo x allows you to confi gure the scanner’s settings. It consists of several tabbed windows each of which will be described in t his chapter. The Scanner Properties dialog box 4-1[...]

4.1 Buttons on the Scanner Properties Dialog Box The buttons on the Scanner Properties dialog box Buttons Description Defaults Click the Defaults button, the factory default settings will be shown on each tab. Scan After all the scan settings are satisfactory, click the Scan button to start scanning your document. Close Click the Close button to le[...]

User’s Manual The following table shows the defaul t settings ： Tab name Default settings Image Image ： Front B&W Binarization ： Dynamic Threshold Resolution ： 200 dpi Invert ： Blank on White Scan Source ： Auto Document Feeder Threshold ： None Brightness ： None Contrast ： None Compression None Color Dropout None Paper Croppi[...]

4.2 The Image Tab The Image tab allows you to choose the front side and (or) the rear side of your document, th e type of im age, and to set several basic scan setting s. Note that except for the resolution, you can set individual scan settings for the front side and the rear side. For example, a ll settings in the Image tab, Compression tab, Color[...]

User’s Manual 4.2.1 The Image Selection Box The Image Selection box includes the image type and document side option. If you wish to scan both the front side and the re ar side of your color document, you can check both Front Color and Rear Color at the same time. Note the options vary based on type of scanner. Example 1 ： Scanning a two-sided [...]

Example 2 ： Scanning a two-sided color document, one in B&W(Drop Blue Color ： Threshold ： 10, Background ： 79), the other in color Side/Image Selection Front Rear Image Type Description Color Choose Color if you wish to scan a color image for your original in color. Gray Choose Gray image if you r original contains actual shades of gray[...]

User’s Manual Front/Rear Auto Color Detection: Click to automaticall y detect and scan the front or the rear page of your color document in color image mode. If your document is in colors, th e scanner will automatically scan the document into a color image. If your document is non-color, you can choose the output to be either B&W or Gray fro[...]

4.2.2 Other Image Options Binarization This is the process of converting a grayscale or color image to a bi-tonal image. There are several different methods of performing this conversion. Two of the options are Dynamic Threshold and Fixed Processing . Dynamic Threshold: Selecting Dynamic Threshold allows the scanner to dynamically evalua te each do[...]

User’s Manual Threshold Used to convert a grayscale image to a bi-tonal image. The value ranges from 0 to 255. A low threshold value produces a lighter image, and can be used to subdue backgrounds and subtle, unneeded information. A high t hreshold value produces a darker image, and can be used to help pick up faint images. Adjust the threshold s[...]

Brightness Adjusts the lightness or darkness of an image. The higher th e value, the brighter the image. Drag the slider to the right or left to increase or decrease the brightness. The range is from –100 to +100. Contrast Adjusts the range between the darkest and the lightest shades in the image. The higher the contrast, th e bigger the differen[...]

User’s Manual Resolution A good control of the resolution results a good detail of an image that scans. The resolution is measured by dots per inch (dpi). Normally, the greater the dpi number, the higher the resoluti on and the image file size. Be aware that greater resolution takes more time to scan, and more disk space for the scanning image. F[...]

Invert Reverses the brightness and the colors in the image. The default setting is Black on a White background. Reverse mode is White on a Black background. For color images, each pixel will be changed into its complementary color at the command of Invert. Black on White White on Black 4-12[...]

User’s Manual Scan Source Choice: y Auto Document Feeder: Used to scan multiple pages. y Flatbed: Used to scan a single page. For example, pages from newspaper clipping, paper with wrinkles or curls. y Flatbed (book): Used to scan several inside pages from book. y Automatic: Allow the scanner automatically set its scan source. If Automatic is sel[...]

Color Adjustment Adjusts the color qua lity of the image so that it comes close to that of the original. This function uses default parameters to adjust the image. Normal After Color Adjustment 4.2.3 Scanning color images The following options are av ailable for scanning color images. y Brightness y Contrast y Resolution y Invert 4-14[...]

User’s Manual 4.2.4 Scanning grayscale images The following option s are availa ble for scanning gray images. y Brightness y Contrast y Resolution y Invert 4.2.5 Scanning B&W images The following option s are availa ble for scanning B&W images. y Binarization (Dynamic Threshold) y Resolution y Invert Or y Binarization (F ix Processing) y [...]

4.2.6 Editing Profiles The Scanner Properties dialog box allows you to change and save your frequently used scan settings into a profile. You can edit these profiles by rena ming or deleti ng them. To add a new profile, 1. Customize your settings. (F or example, change your resolution, image type, cro pping method, scan size, or other scan settings[...]

User’s Manual To load a profile, 1. From the Image tab dialog box, choose your favorable profile from the “Prof iles” dropdown list box. 2. Your favorable prof ile will be immediately loaded and displayed on Scanner Pr operties dialog box. To delete a profile, 1. From the Image tab dialog box, click “Profiles” to prompt the Edit Y our Pro[...]

To rename a profile, 1. From the Image tab dialog box, click “Profiles” to prompt the Edit Y our Profile dialog box. 2. Choose the profile you want to rename from the dropdown list box and then click the Rename button. 3. Enter new name for the profile. 4. Choose “Save” to save the new profile or “Cancel” t o quit. Note: The preset defa[...]

User’s Manual 4.3 The Compression Tab The Compression tab allows you to compress your scanned image and choose the level of co mpression. Bi-tonal images are normally compressed using CCITT standard called Group 4 (G4). Color and grayscale images are often compressed using JPEG technology. Move the JPEG Quality slider to the ri ght or left to inc[...]

The Compression tab dialog box 4-20[...]

User’s Manual 4.4 The Color Dropout Tab 4.4.1 Color Dropout Selection Color Dropout tab allows you to dr op either of the red, blue, or green color in your scanned image. If your image contai ns red color watermark or background, choose the R (Red) channel then any red wat ermark or background will be removed. Th is feature is used to sharpen you[...]

4.4.2 Other Color Dropout Options Advanced Processing provides two options that can adjust your scanned image in th e best optimal result. Filter Threshold This value is us ed to determine the color which will be dropped ou t. A lower value w ill drop more of the selected color out, while a higher value will leav e more of the selected color in. Ba[...]

User’s Manual Remove Blue, Threshold: 20, Background: 255 Remove Blue, Threshold: 20, Background Level: 210 4-23[...]

4.5 The Paper Tab The Paper tab allows y ou to define values relating to image output (i.e., Auto Crop or not, Scan Area, OverScan, Multi-Feed Detection). The Paper tab dialog box 4-24[...]

User’s Manual 4.5.1 Cropping Cropping allows you to capture a portion of the document being scanned. Choice: Automatic, Fixed to Transport, EOP (End of Page) Detection. Options Description Automatic Automatic adjusts the cropping window according to different document sizes. Use this option for batches of mixed-sized documents. Fixed to Transport[...]

The following option s are only available when Fixed to Transport is selected. y X-Offset — the distance from the left end of the scanner to the left edge of the scanning area. y Y-Offset — the position from the top end of the document to the top end of the scanning area. y Width — the width of the scanning area. y Length — the length of th[...]

User’s Manual Example ： Redefine your scan area ( x-offset: 2.25 inches ； y- offset:1.13 inches) Display window Scan A rea Original After Fixed to Transport T he Redefined Scan Area 4-27[...]

4.5.2 Other Paper Selection Deskew Use this option to automaticall y deskew a document. Note: If the skew angle is too great, some of the image may be cut off. Scan Area Choose your desired paper size wi th the drop-down list box. Or you may select a custom pa per size by clicking the Scan Area box and then click Add to include in the choice. Choic[...]

User’s Manual Choose “Unknown Length” if you have a batch of long page document with unknown length. Choose “Enter Length” to enter the length and width of yo ur documents or your desi red scan size on documents. This is useful when you have a batch of documents with the same scan size or a batch of same-sized documents. OverScan Overscan[...]

Example ： Additional Length Detection ： Set Additional Length to be 2.02 inches 2.02” 4-30[...]

User’s Manual Ultrasonic Detection Ultrasonic Detection allows you to set overlapped document by detecting paper thickness between documents. Note ： The availability of the fu nction varies based on type of scanner. There are two options available if Multi-Feed is det ected. z Stop Scanning after Multi-Feed If this is selected, the scan ner wil[...]

Clear the Multi-Fed Paper: Choice: Manual, Auto If Auto is selected, once mult i-feed is detected and scanning operation is stopped, the scan ner will automatically clear the transport of the mu lti-fed paper. If manual is select ed, once multi-feed is detected and scan ning operation is stopped, you need to manually clear the transport of the mult[...]

User’s Manual z Multi-Feed Alarm If a wave file is added, th e scanner will make a sound alarm if multi-feed is detect ed yet no Warning dialog box will be displayed. If “Stop Scanning af ter Multi-Feed” is selected, the scanner will stop the feeder. If “Stop Scanning after Multi-Feed” has not been selected, the scanner will con tinue to [...]

4.5.3 Relative to Document Relative to Document: (used for batches of same-sized documents) This option allows you t o cr op different areas on your documents and deliver these imag es in B&W, Gray, or Color separately. For example, there are applications which require you to store the entire docume nt in B&W and a part of the document in c[...]

User’s Manual 3. Click the Prev iew tab to display the P review window. A black rectangular box appears to indicate the max. scan size your have just selected. The Image Selection Box T he selected image A black rectangular box 4. Click the Preview button to view the entire image in low resolution to correctly crop your relative scan area. T he P[...]

A Cross Sign T he Relative Area 7. Check the B&W image from the Image Selection box to scan the entire document. 8. Click the Scan button to start scanning the document in two image types and sizes. (See the result in below .) The entire document in B&W The relative area i n color 4-36[...]

User’s Manual 4.6 The Preview Tab The Preview t ab allows you to preview (a low-resolution scan ) your image before final scan. This preview image lets you allocate your scan area. You can choose your scan area by the “Scan Area” drop down list box or placing your cursor on the Display window and dragging it diagonally on the Display window. [...]

4.7 The Options Tab The Options tab allows you to set foll owing additional im age processing settings. The Option tab dialog box 4-38[...]

User’s Manual Flip Side Rotation Select “fanfold” to rotate the image of the reverse side to 180 degrees. This is applied to double-sided document which are viewed in portrait are sometime fed into the scanner in landscape or vice versa. Choice: Book, Fanfold. If “Book” is selected, th e image of the reverse side will not be rot ated. The[...]

Rotate Image Choose the rotation angle from the drop down list if you wish to rotate your scanned image. Choice: None, 90°CW(clockwise), 90°CCW(counter clockwise), 180°. Original Rotate 90°CW Rotate 90°CCW Rotate 180° Blank Page Removal Check if you wish to remove the blank page and move the slider to the left or right to your desired thresho[...]

User’s Manual Edge Fill Check White or Black if you wish to add white or black edge on the border of your scanned image. Enter the value from 0 to 5 mm. Default value is 0. Original Edge Fill: 5mm (Black) Image Control Option Check the Mirror box if you wish to reverse the right and left side of your image. Original The Mirror Effect 4-41[...]

Background Setting This option allows you to set your scan background. Choice: White Background, Black Background. White Background Black Background 4-42[...]

User’s Manual 4.8 The Setting Tab The Setting tab allows you to set the following settings: The Setting tab dialog box Energy Saving Control Check the Enable Energy Saver box and move the slider to the right to set the amount of time to start the energy saver after your last action. The range is from 1 to 240 minutes. The default is 15 minutes. 4[...]

Batch Scan Setting • Batch Scan To increase the scanning speed, the scanner first scans a few pages of your document and then sends these scanning data to the application. Therefore, during scanning , the numbers of pages been scanned on the scanner is somehow different with the numbers of pages displayed on your computer screen. Choose this mode[...]

User’s Manual Show Scanning Progress Check and the scanning progress bar will be shown during scanning. Show Warning Message Check to show the warning messages such as “ADF pad count exceeds 50,000 scans (the number varies based on type of scanner). Please replace the ADF pad and reset the pad count.” Save Settings after Closing Check to save[...]

4.9 The Information Tab The Information tab displays th e following system and scanner information. The Information tab dialog box The “Report” button ： If you encounter any error me ssage while using the scanner, click the Report button. A re port.txt file (C:AVxxx) will be generated. Please send this f ile to the nearest service center for[...]

User’s Manual 4-47 The “Reset Pad Count” button 」 ： After scanning approximately 50,000 pages (the number varies based on type of scanner) thro ugh the Auto Document Feeder (ADF), the ADF pad may be worn out and you may experience problems with document feedin g. In this case, it is h ighly recommended to replace the ADF pad with a new on[...]

User’s Manual 5-1 5. ISIS Interface Operation The ISIS driver operation method is similar t o the TWAIN’s. Every function on the ISIS inte rface screen is briefly described as below: Mode: Select one of scan modes, including B&W, gray, color options. Dither: 5 halftone levels available, can be disabled. Dots per inch: Select your de sired r[...]

User’s Manual 6. Using the Buttons The following picture shows the 3 buttons and 1 functi on screen on the scanner. The Scan button The Cancel/Stop button Function-display screen Function selector 6-1[...]

6.1 Installing Button Manager To use the buttons on the scanner, you need to install the Button Manager. To ensure th e Button Manager work properly, please FIRST install Butt on Manager before inst alling the scanner driver. Installing the But ton Manager is easy. Insert t he supplied CD to your CD-R OM drive and follow the in structions on th e s[...]

User’s Manual 6.2 Checking the Button Configurations Before Scanning 1. After the Button Manager and the scanner driver have been successfully installed on your computer, the Button Panel will be displayed in the Window s System Tray at the bottom right corner of your computer screen. This indicates the scanner model The Function Icon The Button [...]

Click to select options or setting. The button number and name. The scan settings for the selected button. The destination application. (This is the application that opens after you have finished scanning.) The file format of the scanned image. The default setting is in dicated in highlighted color. If you wish to change the setting, use this windo[...]

User’s Manual 6-5 6.3 Scanning From One Touch of the Buttons 1. Adjust the paper guide for the width of paper and load the document with their tops into the automatic document feeder. 2. C heck the number on the LED screen to ensure if you are selecting the proper scan settings and destination application. (For example, if you want to scan with b[...]

User’s Manual 7. Maintenance 7.1 Cleaning the ADF From time to time the ADF pad and feeding rolle rs may become contaminated with ink, toner particles or paper dust. In this case the scanner may no t feed documents smoothly. If this occurs please follow the cleaning procedures to return your machine to its origin al state. The Cleaning Procedures[...]

Paper Jam Release Button ADF Pad Feeding Roller Front Door 7-2[...]

User’s Manual 7.2 Cleaning the Glass 1. Press the Paper Jam Clearing button. Open the front door to the left. 2. Wet a cotton swab with some isopropyl alcohol. (95%) 3. Wipe the glass and the w hite area as illustrated in below by moving the swab from side to side to rid the dust or dirt. White Area Glass ADF Front Door 7-3[...]

7.3 Replacing the ADF Snap-in Pad After scanning approximately 50,000 pages through the ADF, the pad may be worn out and you may experience problems with document feedin g. In this case, it is h ighly recommended to replace the pad module with a new one. For ordering the pad module, please co nsult your nearest dealer and fol low the procedure belo[...]

User’s Manual 7.4 Replacing the ADF Roller Please follow the procedure belo w to replace the ADF roller. For ordering the ADF roller, please consult your nearest dealer. After replacing the ADF rolle r, be sure to click the “Reset Roller Count” button in the Scanner Properties dialog box to reset the roller count. The Disassembling Procedure [...]

7-6 2. Hold and press the roller in the arrow direction as indicated to remove the roller. ADF Roller Note: To install a new ADF roller, please follow the reverse order of the disassembling procedure.[...]

User’s Manual 8. Troubleshooting 8.1 Clearing a Paper Jam In the event of a paper jam, follow the procedures below to remove the paper: 1. Press the ADF Release Button on the left side. Gently open the Scanner Front Door to the left. 2. Carefully pull the paper out of the ADF unit. 3. Close the scanner front door. Your Scanner is now ready to use[...]

8.2 Questions and Answers Question: Paper becomes jamme d during scanning. Answer: 1) Open the scanner front door. 2) Pull out the jammed paper carefully. 3) Close the scanner front door. Question: More than one sheet of paper are fed into the scanner. Answer: 1) Open the scanner front door. 2) Remove the multi-fed sheets of paper. 3) Close the sca[...]

User’s Manual Question: Why is it my scanned image always comes out too dark? Answer: 1) Modify the Gamma setting to 1.8 for your monitor and, when printing, set Gamma to 2.2 for your printer. 2) Use the Brightness setting of the TWAIN user interface to get a brighter image. Question: Sometimes it seems the scanner does not detect paper? Answer: [...]

8-4 8.3 Technical Service Before contact Avision, please prepare the following information:  Scanner serial & revi sion number (located on the bottom of the scanner);  Hardware configuration (e.g., yo ur host CPU type, RAM si ze, free disk space, display card, interface card);  The name and version of your sca nning software appl icati[...]

User’s Manual 9. Specifications All specifications are subject to change without notice. Model Number ： FF-0506/FF-0508/FF-0608S Scanner Type: Sheet-fed Simplex Scanner (FF-0506) Sheet-fed Duplex Scanner (FF-0508/FF- 0608S) Optical Resolution: 600 dpi*1200 dpi Scanning Modes: Bl ack & White Gray scale Color ADF Capacity: Up to 50 pages Docu[...]

User’s Manual Index Ａ Ｅ Additional Length Detection , 4- 29 Edge Fill , 4-41 Energy Saving , 4-43 Ｂ Ｆ B&W , 4-6 Filter Threshold , 4-22 Background Level , 4-22 Flip Side Rotation , 4-39 Background Setting , 4-42 Barcode , 4-44 Ｇ Binarization Dynamic Threshold, Fixed Processing , 4-8 G4 , 4-19 Gray , 4-6 Blank Page Removal , 4-40 Bri[...]

b Ｒ Reset Pad Count , 4-47 Reset Roller Count , 4-47 Resolution , 4-11 Rotate Image , 4-40 Ｓ Scan Area , 4-28 Ｕ Ultrasonic Detection , 4-31[...]