THE SATELLI'TE CONTROL SYSTEM

This chapter offers a simple view of the Satellite’s computer control system. In order to get the most out of your new scanner it is a good idea to understand the nature of the control system.

The control system consists of two computers. The scanner control system, or autofocus computer, lets the machine achieve focus and size automatically, even with different easels and lenses.

If a Starlite 55 Colorhead is used with this system, it integrates seamlessly into the complete system. The Starlite computer allows it to consistently maintain accurate light output, allowing for the best scan quality time after time.

The user need not worry, however, about learning to use two computers! The Satellite's two-part control system is integrated together into one. All this is controlled by an easy-to-learn keypad, which is fully back-lit for use in any lighting condition.

This section outlines how the ZBE Satellite control system is operated.

USING THE SATELLITE COMPUTER SYSTEM

The keypad which controls the scanner features a number of keys dedicated to operations frequently used in routing printing. These include keys for setting color filtration, print density and exposure time, starting exposures, sizing a print, etc. This makes most operations with the scanner a simple matter of a few keystrokes.

However, there are many more features built into the Satellite. If each and every feature had a button of its own, the keyboard would become too large and complicated to use conveniently. To make things easier, these features are accessed through a menu-driven software system.

Please read the following to become familiar with how the ZBE Satellite system is operated.

GENERAL USAGE OF DEDICATED KEYS

This section covers the usage of the Satellite Autofocus system. For information on using the Starlite 55 Colorhead, please refer to its user manual.

KEYPAD LAYOUT

DECIMAL POINT ENTRY

All number entry in the computer system is done in a similar manner. If a value has a decimal point in it, the decimal will be fixed at whatever number of places that particular value requires. Entering zeros will move the number to the desired position if no fractional value is needed.

CORRECTING NUMBER ENTRY ERRORS

If, during the entry of a number, you enter an incorrect value and want to change it, entering a few zeros will cause the number to blank back to zero, allowing a new entry.

GENERAL USAGE OF MENUS

The menu system of the Satellite is organized into sections, called sub-menus. Each sub-menu , accessed through the main menu , contains a group of items which are related to one-another. For instance, all of the functions needed to initially set up the Satellite for autofocus operation are grouped in a sub-menu called "SATELLITE CALIBRATION." This sub-menu appears as one of the items in the Satellite main menu .

Finding the item you want in the menu system is quite simple. The keys involved are listed below and the function of each is explained as it pertains to the menu system.

	Puts the user in the Satellite main menu from which all other menus are accessed. When in a menu list, pressing this key will advance the selection to the next item.
	Select the previous item in the current menu list.
	Select the next item in the current menu list. This is the same as pressing while in a menu .
-	All of the items in each menu are numbered. Pressing a number key will move the current selection to the item with that number. For experienced users, this is a faster way to get the desired item.
	Activates the menu item currently selected. If that item is a sub-menu (such as "SATELLITE CALIBRATION"), that menu will now be displayed.
	Exits the menu system and returns to the main screen display.

The current selection is always displayed on the top line of the display, with a ‘->’ prompt next to it. The next available selection is shown on the bottom line. In the text of this manual, the word "select" means to position the -> prompt next to a menu item. The words "go into" mean to access that indicated item by positioning the -> prompt next to it and then pressing .

SATELLITE MENUS LAYOUT

GETTING STARTED

This chapter will explain everything needed to begin using the Satellite in basic autofocus operation.

For operations with the Starlite 55 Colorhead, please refer to the Starlite user manual.

1. LENS SETUP

Before any autofocus operations can be performed on the Satellite system, your lenses must be programmed for the computer’s use. Once each lens is setup, the machine will automatically focus your image at any size. The procedure follows:

The calibration of a lens for autofocus operation is a matter of "showing" the computer perfect focus in two positions and telling it the exact magnification at each location. This procedure requires the use of the Focusing Target placed on the baseboard

1. Rotate the lens turret so that the lens about to be setup is in position at the front of the machine. Be sure that the keypad is displaying the main screen when this is done, so that the computer will know that the lens has been changed. You should hear a small chirp sound indicating that the lens is changed.
   
2. From the Satellite main menu, select "SATELLITE PREFERENCES". In this sub-menu, the last item is "SET SECURITY LOCK". Point to that item using either set of arrow keys on the keypad, then press to select it. The display will read "SECURITY LOCK ON". Press any number key to flip to an "OFF" setting. Press . This will let you actually perform the lens calibration routine.
   
3. Go back into the main menu, and select the "SATELLITE CALIBRATION" item. In the Calibration menu, the first item is "SETUP LENS". Point to it, and press .
   
4. You will be presented with a screen that lets you type in the length of your lens. Enter the lens advertised focal length here. (Keep in mind that this number is only a name for this lens in the computer, it is not used in any calculations.) Press to continue.
   
5. The keypad will issue the instruction: "FOCUS AT SMALL SIZE AND PRESS ENTER". Do this by using the arrow keys to focus at a lens position near the bottom of the column. You do not have to be at the end of travel—the computer’s calculations will work beyond the point at which you focus here. Take the time to be sure that the focus is perfect. When satisfied that it is, press .
   
6. The keypad will prompt: "ENTER MAGNIFICATION". At this point, view the Focusing Target through the reticule. The target is graduated to read the magnification right from the image, a 2cm reference size. This reference can be derived from the printed lines on the reticule glass, which divide the reticule into 1cm squares. Position the center of the target on the baseboard at the center cross hairs in the reticule. Reading either to the left or right, determine the magnification by reading where either of the lines that are 2cm away from the center fall on the target’s graduated scale. See the picture below for an example:

 

In this view, we see the reticule divisions (in gray) and the image from the Focus Target on the baseboard (in black). The two scales are aligned so that the center cross hairs of the reticule graduations falls directly on the center of the Focus Target image. Looking to the left or right of center, the first vertical reticule line is 2cm from center. Reading where this line crosses the horizontal axis of the Focus Target, we see that it falls just short of 1.2cm. In this case, we would determine the magnification to be 1.190. This kind of accuracy is paramount to a good lens setup.

7. Once you have determined the magnification, enter the number by typing its digits, then adding zeroes at the end to get the decimal place in the correct location. For our example of 1.19 magnification, we would type , , , , . The zero at the end changes our entry from 0.119 to 1.190. It is very important to mind the decimal point location. Also note that an inaccurate measurement here will make the newly-setup lens be out of focus, just as not focusing accurately will.
   
8. When you press after typing the magnification value, you will be asked to "FOCUS AT LARGE SIZE, THEN PRESS ENTER". This step is a repeat of step E, but at a large size near the top of the column. Again, you do not have to be at the limits of travel; the computer can calculate beyond where you did this setup.
   
9. After focusing and pressing , again determine the magnification as explained in step F. Then press ..
   
10. The machine will now perform a "reference" procedure. The stages will eventually move to the bottom of the column, then back up. When this has finished, the new lens is ready for autofocus operation. You should be able to move up and down the column using the sizing arrows (the arrows under the enter and cancel keys). Wherever you stop movement, the machine should bring the image into focus within a few seconds. If the focus in not correct, you will need to perform this procedure again until it is. (It is normal for a first-time operator to need a few tries before a perfect setup is achieved.)

 

If, after many tries, the focus looks good at the viewing reticule, but your scanned images are soft, re-check that the Optical Alignment procedure has been performed correctly.

You can also use the Scanner Focus Adjust (see Reference Section of this manual) function to trim small focus errors arising from the viewing reticule not being adjusted to the same height as your scanner’s image sensor.

1A. LENS SETUP USING DYNAMIC FOCUS

This section describes the procedure to calibrate a lens for autofocus operation on the ZBE Satellite Universal Scanner. This Procedure will utilize both the Betterlight Digital Camera Software and Adobe Photoshop 4.0 for Macintosh.

Basic Knowledge of Macintosh operation and familiarity with the Satellite control keypad will be necessary.

I: The Satellite Lens Setup: An Overview

The Lens Setup procedure for the Satellite is a process of manually focusing the machine at two different positions on the column (low=small magnification and high=large magnification) and keying in the exact magnification value at each position. During this procedure, the keypad will give basic instructions at each step.

By using the Actual CCD Image sensor in the digital camera itself, we can achieve the best possible accuracy for the Lens Setup. The above steps are detailed in the following pages. Before beginning, please read through these instructions to the end. Also, you will need:

1. An operational Digital camera hooked up to a Computer.
2. The camera driver software which allows dynamic focus judgment.
3. Calculator
4. ZBE Satellite Dynamic Focus AF Setup Target

 

II: The Lens Setup Procedure

Œ — Select Setup Lens from Satellite Calibration Menu

Before beginning:

• Rotate the lens turret into position so that the lens you wish to use is at front.
• Move the Baseboard to it’s top-most position and make sure it is locked into place.
• Select the Easel "Baseboard" in the Select Easel Menu.
• Be sure that the Focus Target is placed on the baseboard of the machine.
  

Press the MENU key, then use the Arrow Keys to select the item "Satellite Calibration," and press ENTER.

 — Enter the focal length of the lens

Simply type in the Focal Length of the lens, as it appears printed on the lens itself.

Press ENTER. This number is not actually used in the calculations. It is simply a "name" for the lens.

Ž — Use the Arrow Keys to Focus at a Small Size

The display will read "Focus at Small Size, then Press Enter."

1. Use the Arrow Keys as described in the User’s Manual to first move the stages of the machine to a position low on the column, then bring the image into focus as you view it through the viewing reticule.
   
2. Once the focus looks good through the reticule, press the footswitch to position the camera in the "taking" position.
   
3. Turn on your lighting to illuminate the baseboard for scanning.
   
4. At the computer, start the camera software, if it is not already running.
   
5. Place the Focus Target on the baseboard. Press the footswitch if necessary to bring the camera head into the "viewing" position. Use the viewing reticule to position the Target near the center of the viewing area. Make sure that it lays flat, and is as square to the reticule lines as possible.
   
6. Press the footswitch to move the digital camera into the "taking" position.
   
7. Turn on the baseboard illumination lights.
   
8. In the camera’s software, take a preview of the image.
   
9. Once the prescan is completed, the image of the focus target should appear in the preview area. From here on, do not move the Satellite Stages until indicated.
   
10. Start the camera’s Dynamic Focus function at the computer. Please consult your camera’s user’s manual for information on how to do this.
    
11. In the on-screen view of the Focus Target, locate the area of the image that has the horizontal bars. These are an ideal target for the dynamic focus routine. Position the camera’s dynamic focus on-screen target area over these bars.
    
12. Once satisfied that the camera’s dynamic focus routine is pointing at the focus bars in the preview image, start the dynamic focus routine. A number should be reading out, indicating the condition of the focus.
    
    Be aware that the ambient light in the room may affect this number, so be sure that no one is walking around in the room, and that there are no other in-room influences on the light falling on the baseboard.
    
13. While this dynamic display is active, use the Arrow Keys near the number keys on the Satellite keypad to move into focus. You will notice that the number increases and decreases as you move. The higher the number, the better the focus. Use these arrow keys to achieve the highest number possible.
    
    Hint: As you move through the point of "perfect-focus," you will notice that the number will "peak out" at some value, then start to decrease. As the number decreases, the bar below the number will recede, leaving a grey area behind. This is a visual indication of the "peak" value at perfect focus.
    
    Another Hint: Tap the Arrow Keys for very fine positioning, press and hold them for coarser movements. Allow a few seconds after you tap a key, to allow the machine to make the requested movement, and for the focus number to register the change. This is very important, particularly when you are very near the perfect-focus point.
    

 — Enter Magnification Factor

Before we can enter the magnification factor, we must first measure it. We will do this utilizing Photoshop (or similar photo image manipulation software program) to measure the image in pixels for a precise measurement.

1. Leave the keypad in the "Use Arrow Keys to Focus" screen, but be very careful not to touch any arrow keys, which would move the Satellite and blow your perfect focus." Leaving the keypad in this mode will allow us to make focus adjustments if necessary without exiting out of the entire Lens Setup process.
   
2. In the Betterlight program, click the EXIT button in the focus control window. The camera will move it’s CCD image sensor into its "home" position. The program should then return to it’s normal screen.
   
3. In the left pane of the Betterlight program, which controls the various aspects of the scan you about to take, set the resolution to 100%. This is very important for a true measurement.
   
4. Set the Scan Area to some value less than 100%. A frame will appear in the picture area. Position the mouse cursor over one of the lines of this frame. If the cursor does not appear as an arrow, press the Macintosh OPTION Key. Use the mouse to move each of the four borders of this frame to enclose only the "ruler" area of the focus target. This will reduce the file size for faster operation in Photoshop. The current file size is shown in the lower information window of the Betterlight software; it should be less then 20MB.
   
5. Make the scan in the normal manner. Make sure you name it. (For the low-magnification setup, "LOW" works well, then use "HI" for the scan taken for the high-magnification setup.) Once the scan is done, retrieve it from the camera using the "File Manager" selection under the "File" menu.
   
6. Open the scanned picture in Photoshop. Zoom in to a 300% view. If the image does not look sharp, you may wish to repeat the previous section "Focus at Small Size…"
   
7. Find two bars on the ruler that are 100mm apart. (Note: if you are doing the high-magnification setup, use lines that are 400mm apart, for better accuracy. If using the attached focus target, use marks that are 200mm apart, since 400mm marks are not available.)
   
8. Use the "Navigator" tool window in Photoshop to measure the distance between the centers of these two bars. (See appendix for more details on this.)
   
9. You now have the distance between these bars, in pixels. Since we know that the "real" distance between them is 100mm, and we have a pixel count corresponding to this measurement, we need to know the actual size of a pixel, at the camera’s CCD. For the Dicomed Camera Back, a pixel is specified at 12microns, or 0.012mm. This number is very important for the next step. If you are using another brand of camera, check it’s technical specifications to determine the CCD’s "Pitch" (the physical size of each pixel on the CCD array).
   
10. Calculate the magnification. The magnification is the Real Distance as measured at the baseboard, divided by the distance as projected onto the camera. The formula below will yield the magnification measured with the Dicomed camera (pixels 0.012mm square):
    
    MAGNIFICATION = Baseboard Measurement (mm) Camera Pixels x 0.012
    
    Since Magnification is equal to Baseboard distance divided by camera image distance, we use Photoshop to count the number of pixels on the camera, then multiply the pixel count by the distance per pixel (in this case 0.012mm) to get the actual distance at the camera’s image sensor.
    
    The Baseboard Measurement here is equal to 100mm. Since the 0.012 converts the pixels into millimeters, and through some simplification, an easier-to-use formula becomes:
    
    

    
    

    11. If the screen on the Satellite keypad still reads "Use Arrow Keys…", press ENTER to yield the display, "Enter Magnification: " Type in the magnification factor you calculated in the previous step. Be sure that the decimal point is in the correct place. Press ENTER when finished.

    This completes the first (low) point of the setup. The next steps are to repeat this process at the large-size position of the setup. Repeat sections Ž and  above, but focus at a larger size (near the top of the column). Note that you do not need to go all the way to the top of the column, since the computer will be able to focus above the point you use for setup.

    After the second (high-magnification) point is completed, the machine will perform a "Referencing…" procedure, after which you should check the setup by moving to various positions on the column, and checking that the image (and any scans made) is in focus.

    2. SIZING AND FOCUSING CONTROL

    Basic Movements:

    The Satellite is a full-featured autofocus and autosizing scanner. For proper operation of this system, the lens being used must be set up. (See "LENS SETUP".) In Autofocus mode, the scanner will stay in focus at all points up and down the column. The stages may be moved either by entering a print size or magnification, or by using the right-hand set of arrow keys ( and )) to jog the machine up or down. The arrow keys useful for making fine adjustments when doing custom cropping of a particular print.

    There are two modes of operation for the Satellite, the Autofocus mode and Manual-focus mode. To change from one to the other, use . The upper-right area of the keypad display will read "MANUAL" in the Manual-focus mode, and "SIZE:" or "DPI:" while in the Autofocus mode.

    In Autofocus mode, the right-hand set of arrow keys are used for jogging the scanner onto the desired image size as they are in Manual-focus mode. The arrows under the number pad may also be used in Manual-focus mode. The arrows below the numeric keypad are inoperative in Autofocus mode as focusing is accomplished by the Satellite's control system.

    In the Manual-focus mode, sizing and focusing the Satellite is the same as in the lens setup procedure. The right-hand set of arrow keys are the main zooming and sizing control keys, while the arrows below the numeric keys are used for focusing. is used somewhat like a shift key on a typewriter to increase the speed at which the scanner moves and may be used with either set of arrows.

    Using the Auto-Sizing Modes:

    The other option for sizing in Autofocus mode is to tell the machine to go directly to the size or magnification you desire, by pressing the GOTO key. You may tell the machine to go to a specific magnification factor, a specific "print size" (to scan an original of a specific size), or a specific DPI factor at the target. Any of these three modes are selected simply by pressing the GOTO key repeatedly. There different modes are explained here:

    Magnification: Enter a numeric magnification value to which you want the machine to set itself up. This magnification value is simply the optical magnification going from the Scanner down to the target (baseboard).

    Print Size: Enter the size of the artwork you are scanning. This measurement can be entered in inches or millimeters. When the target print size is entered, the computer will calculate the magnification required to match the scanner’s field size to the target size you enter here. Thus, this sizing mode requires that you have the correct scanner selected from the "SELECT SCANNER" menu item in the main menu. The sizes referred to are simple one-dimensional measurements, usually taken to be the horizontal, or long, dimension of the artwork (and scanner) you are working with.

    DPI: Enter the DPI (Dots-per-Inch) of the scan that you want. This is the DPI at the artwork (baseboard). When the target DPI is entered, the computer will calculate the magnification required to match the scanner’s native DPI to the target (at the baseboard) DPI you enter here. Thus, this sizing mode requires that you have the correct scanner selected from the "Select Scanner" menu item in the main menu. Note that this DPI value is only valid when the scanner is set to it’s maximum resolution.

    3. KEYPAD BACK LIGHT CONTROL

    The Satellite's keypad is fully back-lit for use in dimly illuminated areas. You may extinguish the keypad's lighting by pressing . This will toggle the backlights off and on.

    In addition to the on/off control, the intensity of the backlighting may be adjusted. A small knob is provided under the right end of the keypad unit for this purpose.

    4. VIEWING THE AUTOFOCUS SETUP

    Press to display the current Lens, Scanner, Easel and Negative size currently in use. Use this feature for double-checking which Carrier and Easel are selected. This can be useful if the scanner is not focusing correctly because the correct Carrier or Easel is not selected.

    5. EASEL SELECTION

    Any surface that holds original artwork to be scanned at a height different than that of the baseboard itself is referred to as an "easel." Press , then , then for the Select Easel list. A shortcut to this list can be done by pressing and together.

    When changing the easel being used with the Satellite, that change must be entered in the Satellite’s computer. This is simply a matter of selecting the current easel from the list using the Select Easel item in the main menu . When in this menu item, you will be presented with a list of available easels, starting with "NONE", then "STARLITE" and then letters ‘B’ through ‘H’. Selecting "NONE" will load an easel offset of zero which means no easel is being used.

    For accurate autofocus and autosizing each easel must be designated with a letter and setup using the Easel Setup procedure (See next item).

    6. EASEL SETUP

    Before a new easel (light box or other artwork holder) is used with the Satellite, it must be setup to allow the autofocus system to properly calculate the image position when the easel is in place. In short, anything that changes the height of the focus plane from that of the baseboard is known as an "easel." To program an easel follow these steps:

    1. Select the shortest lens available.
       
    2. Use the rack-over footswitch to put the machine in "viewing position" in order to see the reticule composition.
       
    3. Select easel "NONE" using the Select Easel item in the main menu.
    4. At the main screen in Autofocus mode, jog the scanner to a position near the middle of the column.
    5. Remove any easel from the baseboard.
       
    6. Place the Focus Target (or any printed matter that has very accurate measurement graduations on it) on the baseboard.
       
    7. In Autofocus mode, size the image of the focus target so that the target’s graduations are perfectly aligned to any of the lines on the reticule. The exact magnification is not important, only that the image aligns with the reticule lines in an easy-to-repeat manner. You will have to re-size to this setting later.
    8. Select "SETUP EASEL" from the Calibration menu .
    9. You will be presented with a list of easel "letters" to choose from. Select ‘A’ if it is the first easel, and press . Write the letter ‘A’ somewhere on your easel for future reference.
    10. Place the easel on the baseboard, and place the focus target on the easel.
        
    11. Now use and to jog the scanner so that the image of the focus target is at exactly the same size as that achieved in step "G" above.
    12. Press when the marks are perfectly aligned.

    The Easel Setup procedure is now complete. This easel may now be selected from the Select Easel menu item, in the Satellite main menu, when its use is desired. Once an easel is programmed, it will work properly with any lenses in the machine that have also been programmed properly.

    
    7. OPERATION WITH STARLITE COLORHEAD

    The Satellite is able to control a Starlite Closed-Loop light source for the purpose of scanning transparencies or film negatives up to a 4x5 size. The Colorhead simply sits upon the baseboard of the Satellite as an easel, and connects to the Autofocus Computer Box on the scanner stage of the Satellite using the interface cable provided.

    Operation of the Starlite colorhead with the Satellite system is as follows:

    To begin using the Starlite colorhead:

    1. Place the Starlite colorhead in position on the baseboard of the machine.
    2. Connect the interface cable as shown in the drawing below.
    3. Plug the Starlite’s main AC power cord into your AC outlet, and turn the Starlite’s power switch on.
    4. Select "ENABLE STARLITE INTERFACE" from the Satellite Preferences menu, and make the setting "ENABLED." (Press , , , select item #10, press , then press until the screen reads "ENABLED", then press .)
    5. The Starlite will go through a 15-second power-on calibration cycle, then the system will be ready for operation.

    When finished with the Starlite Colorhead:

    1. Select "ENABLE STARLITE INTERFACE" from the Satellite Preferences menu, and make the setting "DISABLED." (Press , , , select item #10, press , then press until screen reads "DISABLED", then press .)
    2. Turn the Starlite power off, disconnect the cabling, and set the Starlite aside.
       

.

REFERENCE SECTION

SATELLITE MAIN SCREEN OPERATIONS

This section covers the operation of the keys on the keyboard – how to use them and what they are used for. The main screen information is also explained.

"QUICK-EASEL" SETUP

One of the main advantages of the Satellite over other scanner configurations (like drum or flat-bed scanners) is that it is capable of scanning artwork or other originals that are not printed on paper or thin plastic. To scan originals such as oil paintings, carpet samples, or other materials that have some thickness associated with then, the Satellite features a "Quick-Easel" setup that allows you to focus on a surface that is above the actual baseboard of the machine. After doing so, the autofocus/autosizing operations of the Satellite will work at that new surface level. Thus, you can focus the machine at a convenient position for viewing, then tell it how big the artwork is, and make your scan.

To do this, press and together. The keypad display will read "USE ARROW KEYS TO FOCUS. THEN PRESS ENTER." At this point, use either set of arrow keys to bring the image into focus at the viewing reticule, then press . The machine will now be in-focus at any magnification desired thereafter. The "Quick-Easel" height offset will "ride" on top of any normal Easel that you have selected through the Easel Selection menu.

To clear the "Quick-Easel" setup, simply select any easel from the Select Easel menu. Turning the machine off also clears the Quick-Easel setup. For a more permanent Easel setup, program a standard easel as described in the Getting Started section of this manual.

EASEL SELECT

The Easel Selection menu allows you to choose any of your previously programmed easel offsets by it’s designating letter. To get to this menu, you can either use the menu system (by pressing , , ) or by pressing and at the same time. This later key stroke allows you to instantly access the Easel menu for more efficient operation with various easel heights. Note that selecting an Easel in this manner clears any "Quick-Easel" that you have setup.

JOB MEMORY SAVE

The Satellite currently has 200 job memory channels that can be used to store specific print jobs. All autofocus setup information is saved; this includes the print size or magnification, carrier, negative size, lens, and easel information. The f-stop is used only for the operators reference and is not used in any of the calculations. To save a job press . (If a Starlite colorhead is connected, all of its information will also be saved.) You will be prompted for a job number: enter a five digit number of your choice, then press . If that number is already in use you will be asked if you would like to over-write the old job information. Next you will be prompted for a f-stop value, you may enter a f-stop value if you wish, it will be displayed when the job is recalled. It is a good practice to always save the setup during test printing to ensure that you are printing with the latest print data.

JOB MEMORY RECALL

To recall or load a job that was previously saved press You will be prompted to enter a job number. Enter the job number and press . If a previously-stored job by that number is not found the display will show "DOESN’T EXIST, TRY AGAIN." When a job is recalled the light will turn on and the filtration will be put in, as the recalled f-stop is displayed for a few seconds. The scanner will also move into position for the stored setup size and focus. The display will then go back to the main screen. The Satellite is now ready for a take.

LCD DISPLAY AND KEY BACKLIGHTS CONTROL

Use to turn the keypad backlighting on and off. When in the off position and are dimly lit so you can easily find them in the dark. On the back of the keypad you may adjust the backlights brightness with the small adjustment knob. The LCD display contrast can be adjusted on the back of the keypad with a small slotted screwdriver. Large changes in room temperature may cause the display contrast to change.

AUTOFOCUS / MANUAL-FOCUS CONTROL

Use to turn the Autofocus mode on and off. The Autofocus mode is active when "SIZE" is displayed in the upper right corner of the main display. When the display reads "MANUAL" the Autofocusing system is inactive. When in Manual mode you may focus the scanner using the arrow keys ( and ) in the numeric keypad area. (See next section.)

ZOOMING AND JOGGING THE SCANNER

There are two sets arrow keys ( and ) that are used for jogging (or zooming) the scanner up and down. The arrows next to the key are the main zoom keys and move the scanner up and down the column in both Manual and Autofocus modes. The arrows in the numeric keypad area are active only in Manual-focus mode, and are used for small movements to focus the scanner. The key can be used in conjunction with either set of arrow keys. You can hold down or for continuous movement or tap the keys for small movements.

CAMERA-BACK LOADING OPERATION

When you press and simultaneously, the Satellite will move to your preset "Load Position," so you can load or unload your scanner (or camera back). When finished, press any key and the Satellite will move back to the exact position it was in before the loading, ready for a take. You should pick a convenient load position and set it using the Set Load Position preference. (See Satellite Preferences section.)

AUTOSIZING OPERATION

In addition to simply using the arrow keys to move up or down, the other option for sizing in Autofocus mode is to tell the machine to go directly to the size or magnification you desire, by pressing . You may tell the machine to go to a specific magnification factor, a specific "print size" (to scan an original of a specific size), or a specific DPI factor at the target. Any of these three modes are selected simply by pressing repeatedly. An explanation of these modes is as follows:

Magnification: Enter a numeric magnification value to which you want the machine to set itself up. This magnification value is simply the optical magnification going from the Scanner down to the target (baseboard).

Print Size: Enter the size of the artwork you are scanning. This measurement can be entered in inches or millimeters. When the target print size is entered, the computer will calculate the magnification required to match the scanner’s field size to the target size you enter here. Thus, this sizing mode requires that you have the correct scanner selected from the "SELECT SCANNER" menu item in the main menu. The sizes referred to are simple one-dimensional measurements, usually taken to be the horizontal, or long, dimension of the artwork (and scanner) you are working with.

DPI: Enter the DPI (Dots-per-Inch) of the scan that you want. This is the DPI at the artwork (baseboard). When the target DPI is entered, the computer will calculate the magnification required to match the scanner’s native DPI to the target (at the baseboard) DPI you enter here. Thus, this sizing mode requires that you have the correct scanner selected from the "SELECT SCANNER" menu item in the main menu.

 

VIEWING THE AUTOFOCUS SETUP

Press to display the current Lens, Easel and Negative size currently in use. Use this feature for double-checking which Easel is selected. This can be useful if the scanner is not focusing sharply because the correct Easel is not selected.