HandHeld Entertainment 4800dr User Manual

Imaging Guide

Document Reader

Disclaimer

Hand Held Products (“Hand Held Products”) reserves the right to make changes in specifications and other information contained in this document without prior notice, and the reader should in all cases consult Hand Held Products to determine whether any such changes have been made. The information in this publication does not represent a commitment on the part of Hand Held Products.

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FCC Class A Compliance Statement

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

• This device may not cause harmful interference.

• This device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC

Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own expense.

Caution: Any changes or modifications made to this device that are not expressly approved by Hand Held Products, Inc. may void the user's authority to operate the equipment.

Note: To maintain compliance with FCC Rules and Regulations, cables connected to this device must be shielded cables, in which the cable shield wire(s) have been grounded (tied) to the connector shell.

Canadian Class A Compliance

This Class A digital apparatus complies with Canadian ICES-003.

Conformité à la règlementation canadienne

Cet appareil numérique de la Classe A est conforme à la norme NMB-003 du Canada.

The CE mark on the product indicates that the system has been tested to and conforms with the provisions noted within the 2004/108/EC Electromagnetic Compatibility Directive and the 2006/95/EC Low Voltage Directive.

For further information please contact:

Hand Held Products Nijverheidsweg 9-13 5627 BT Eindhoven The Netherlands

Hand Held Products shall not be liable for use of our product with equipment (i.e., power supplies, personal computers, etc.) that is not CE marked and does not comply with the Low Voltage Directive.

Patents

Please refer to the product packaging for a list of patents.

LED Safety Statement

This device has been tested in accordance with IEC60825-1 LED safety, and has been certified to be under the limits of a Class 1 LED device.

Laser Eye Safety Statement

This product is under the limits of a class 2 laser device. This device has been tested in accordance with and complies with IEC60825-1: 1993+A1+A2 and 21 CFR 1040.10 and 1040.11,

except for deviations pursuant to Laser Notice No. 50, dated July 26, 2001. LASER LIGHT, DO NOT STARE INTO BEAM, CLASS 2 LASER PRODUCT, 1.0 mW MAX OUTPUT: 650nM. Caution: Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous

radiation exposure.

UL and cUL Statement

UL and cUL listed: UL60950-1 and CSA C22.2 No.60950-1-03.

C-Tick Statement

Conforms to AS/NZS 3548. C-Tick number: N10410.

Solids and Water Protection

The 4800dr has a rating of IP40, immunity of foreign particles and dripping water.

GS Mark

This product has been issued a GS certificate.

Waste Electrical and Electronic Equipment Information

Note: Hand Held Products complies with Directive 2002/96/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of

27 January 2003 on waste electrical and electronic equipment (WEEE).

This product has required the extraction and use of natural resources for its production. It may contain hazardous substances that could impact health and the environment, if not properly disposed.

In order to avoid the dissemination of those substances in our environment and to diminish the pressure on the natural resources, we encourage you to use the appropriate take-back systems for product disposal. Those systems will reuse or recycle most of the materials of the product you are disposing in a sound way.

The crossed out wheeled bin symbol informs you that the product should not be disposed of along with municipal waste

and invites you to use the appropriate separate take-back systems for product disposal. If you need more information on the collection, reuse, and recycling systems, please contact your local or regional waste

administration. You may also contact your supplier for more information on the environmental performances of this product.

Document Reader Identification

Compliance Label location

Laser Light Emissions

LASER LIGHT. DO NOT STARE INTO BEAM CLASS 2 LASER PRODUCT

1.0 mW MAX OUTPUT: 650nM IEC60825-1: 1993+A1+A2 Complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated July 26, 2001.

Chapter 1 - Imaging Commands

Single-Use Basis ................................................................................................................................. 1-1

Command Syntax ................................................................................................................................ 1-1

Step 1 - Take a Picture Using IMGSNP ....................................................................................1-1

Image Snap - IMGSNP ....................................................................................................................... 1-1

IMGSNP Modifiers ...................................................................................................................... 1-1

P - Imaging Style ................................................................................................................... 1-1

B - Beeper ............................................................................................................................. 1-1

T - Wait for Trigger .............................................................................................................. 1-2

L - LED State ........................................................................................................................ 1-2

A - Aimer Lines .................................................................................................................... 1-2

E - Exposure .......................................................................................................................... 1-2

G - Gain ................................................................................................................................. 1-3

W - Target White Value ........................................................................................................ 1-3

D - Delta for Acceptance ...................................................................................................... 1-3

U - Update Tries .................................................................................................................... 1-3

% - Target Set Point Percentage ........................................................................................... 1-4

Step 2 - Ship a Picture Using IMGSHP or IMGACP ...............................................................1-5

Image Ship - IMGSHP ........................................................................................................................ 1-5

Image Auto Crop - IMGACP.............................................................................................................. 1-5

IMGSHP/IMGACP Modifiers...................................................................................................... 1-6

A - Infinity Filter ................................................................................................................... 1-6

C - Compensation .................................................................................................................. 1-6

D - Pixel Depth ..................................................................................................................... 1-6

E - Edge Sharpen ................................................................................................................... 1-7

F - File Format ...................................................................................................................... 1-7

H - Histogram Stretch ........................................................................................................... 1-7

I - Invert Image ..................................................................................................................... 1-8

IF- Noise Reduction .............................................................................................................. 1-8

IU - Image Adaptive Text Filter ........................................................................................... 1-9

IS - Unsharp/Brighten Filter ............................................................................................... 1-10

J - JPEG Image Quality ....................................................................................................... 1-10

K - Gamma Correction ........................................................................................................ 1-10

L, R, T, B, M - Image Cropping ......................................................................................... 1-11

P - Protocol .......................................................................................................................... 1-11

S - Pixel Ship ....................................................................................................................... 1-12

U - Document Image Filter ................................................................................................. 1-12

V - Blur Image .................................................................................................................... 1-13

W - Histogram Ship ............................................................................................................ 1-13

Intelligent Signature Capture - IMGBOX.........................................................................................1-14

IMGBOX Modifiers ................................................................................................................... 1-14

A - Output Image Width ..................................................................................................... 1-14

B - Output Image Height ..................................................................................................... 1-15

D - Pixel Depth ....................................................................................................................1-15

F - File Format .....................................................................................................................1-15

H - Height of Signature Capture Area .................................................................................1-15

K - Gamma Correction ........................................................................................................1-15

R - Resolution of Signature Capture Area ...........................................................................1-16

S - Barcode Aspect Ratio ....................................................................................................1-16

W - Width of Signature Capture Area .................................................................................1-16

X - Horizontal Barcode Offset ............................................................................................1-16

Y - Vertical Barcode Offset .................................................................................................1-16

Chapter 2 - Serial Default Commands

Conventions .........................................................................................................................................2-1

Menu Command Syntax ......................................................................................................................2-1

Query Commands .........................................................................................................................2-1

Concatenation of Multiple Commands .........................................................................................2-2

Responses......................................................................................................................................2-2

Examples of Query Commands ....................................................................................................2-2

Menu Commands.................................................................................................................................2-3

Chapter 3 - Customer Support

Technical Assistance ...........................................................................................................................3-1

Online Technical Assistance.........................................................................................................3-1

For Further Information ................................................................................................................3-1

Product Service and Repair .................................................................................................................3-1

Online Product Service and Repair Assistance.............................................................................3-2

Imaging Commands

The document reader is like a digital camera in the way it captures, manipulates, and transfers images. The following commands allow you to alter the way the document reader performs these functions.

Single-Use Basis

Imaging Commands with their modifiers send instructions to the document reader on a single-use basis, and take effect for a single image capture. Once that capture is complete, the document reader reverts to its imaging default settings. If you want to permanently change a setting, you must use the serial default commands (see Chapter 2). When the serial default command is used, that selection becomes the new, permanent setting for the document reader.

Command Syntax

Multiple modifiers and commands can be issued within one sequence. If additional modifiers are to be applied to the same command, just add the modifiers to that command. For example, to add 2 modifiers to the Image Snap command, such as setting the Imaging Style to 1P and the Wait for Trigger to 1T, you would enter IMGSNP1P1T.

Note: After processing an image capture command (IMGSNP or IMGBOX), you must follow it with an IMGSHP or IMGACP

command if you want to see it on your terminal.

To add a command to a sequence, each new command is separated with a semicolon. For example, to add the Image Ship command to the above sequence, you would enter IMGSNP1P1T;IMGSHP.

The imaging commands are:

Image Snap - IMGSNP (page 1-1) Image Ship - IMGSHP (page 1-5) Intelligent Signature Capture - IMGBOX (page 1-14)

The modifiers for each of these commands follow the command description.

Step 1 - Take a Picture Using IMGSNP

Image Snap - IMGSNP

An image is taken whenever the hardware button is pressed, or when the Image Snap (IMGSNP) command is processed. The image snap command has many different modifiers that can be used to change the look of the image in memory. Modifiers

always begin with numbers and end with a letter (case insensitive). Any number of modifiers may be appended to the IMGSNP command. For example, you can use the following command to snap an image, increase the gain, and have the beeper sound once the snap is complete:

IMGSNP2G1B

IMGSNP Modifiers

P - Imaging Style

This sets the Image Snap style.

0P Decoding Style. This processing allows a few frames to be taken until the exposure parameters are met. The

last frame is then available for further use.

1P Photo Style 2P Manual Style. This is an advanced style that should only be used by an experienced user. It allows you the

most freedom to set up the document reader, and has no auto-exposure.

B - Beeper

Causes a beep to sound after an image is snapped.

0B No beep (default) 1B Sounds a beep when the image is captured.

(default)

. This mimics a simple digital camera, and results in a visually optimized image.

Document Reader Imaging Guide 1 - 1

T - Wait for Trigger

Example of Aimer Lines Off (0A): Example of Aimer Lines On (1A) with LEDs off (0L):

Example of Exposure at 7874E with fluorescent lighting: Example of Exposure at 100E with fluorescent lighting:

Waits for a hardware button push before taking the image. This is only available when using Photo Style (1P).

0T Takes image immediately (default) 1T Waits for a button push, then takes the image

L - LED State

Determines if the LEDs should be on or off, and when. Ambient illumination (0L) is preferred for taking pictures of color documents, such as ID cards, especially when the document reader is in a stand. LED illumination (1L) is preferred when the document reader is hand held. LED State is not available when using Decoding Style (0P).

0L LEDs off (default) 1L LEDs on

A - Aimer Lines

Sets whether the aimer lines will be captured with the image or not. In order to capture the aimer lines, the LEDs must also be off. If the LEDs are on, the aimer lines will not be captured.

0A Aimer Lines off (default) 1A Aimer Lines on

E - Exposure

Exposure is used in Manual Style only (2P), and allows you to set the exposure time. This is similar to setting a shutter speed on a camera. The exposure time determines how long the imager takes to record an image. On a bright day, exposure times can be very short because plenty of light is available to help record an image. At nighttime, exposure time can increase dramatically due to the near absence of light. Units are 127 microseconds. (Default = 7874)

nE Range: 1 - 7874

1 - 2 Document Reader Imaging Guide

G - Gain

Example of Gain at 1G: Example of Gain at 4G: Example of Gain at 8G:

Example of White Value at 75W:

Example of White Value at 125W:

Example of White Value at 200W:

Gain is used in Manual Style only (2P). Like a volume control, the gain modifier boosts the signal and multiplies the pixel value. As you increase the gain, the noise in an image is also amplified.

1G No gain (default) 2G Medium gain 4G Heavy gain 8G Maximum gain

W - Target White Value

Sets the target for the median grayscale value in the captured image. For capturing close-up images of high contrast documents, a lower setting, such as 75, is recommended. Higher settings result in longer exposure times and brighter images, but if the setting is too high, the image may be overexposed. Target White Value is only available when using Photo Style (1P). (Default = 125)

nW Range: 0 - 255

D - Delta for Acceptance

This sets the allowable range for the white value setting (see W - Target White Value). Delta is only available when using Photo Style (1P). (Default = 25)

nD Range: 0 - 255

U - Update Tries

This sets the maximum number of frames the document reader should take to reach the D - Delta for Acceptance. Update Tries is only available when using Photo Style (1P). (Default = 6)

nU Range: 0 - 10

Document Reader Imaging Guide 1 - 3

% - Target Set Point Percentage

Example of Target Set Point Percentage at 97%:

Example of Target Set Point Percentage at 40%:

Example of Target Set Point Percentage at 50%:

Sets the target point for the light and dark values in the captured image. A setting of 75% means 75% of the pixels are at or below the target white value, and 25% of the pixels are above the target white value. Altering this setting from the default is not recommended under normal circumstances. To alter grayscale values, W - Target White Value should be used.

(Default = 97)

n% Range: 1 - 99

1 - 4 Document Reader Imaging Guide

Step 2 - Ship a Picture Using IMGSHP or IMGACP

Image taken without Autocrop: Image taken with Autocrop:

Image Ship - IMGSHP

An image is taken whenever the button is pressed, or when the Image Snap (IMGSNP) command is processed. The last image is always stored in memory. You can “ship” the image by using the IMGSHP or IMGACP command.

The image ship and image auto crop commands have many different modifiers that can be used to change the look of the image output by the document reader. Modifiers affect the image that is transmitted, but do not affect the image in memory. Modifiers always begin with a number and end with a letter (case insensitive). Any number of modifiers may be appended to the IMGSHP or IMGACP command. For example, you can use the following command to snap and ship a bitmap image with gamma correction and document image filtering:

IMGSNP;IMGSHP8F75K26U

Image Auto Crop - IMGACP

Image Auto Crop removes unwanted portions of an image, such as blank space surrounding an image. Image Auto Crop uses artificial intelligence to search for the area of the image that contains text. It then crops the image to just that area and adjusts it to a horizontal display. Depending on the size and position of the document, this may possibly result in an upside-down or sideways image. The image can then be rotated to the proper orientation using your local software. Smaller documents will crop more quickly than larger documents. The accuracy of auto crop is affected by the density of the text, amount of non-text features, and contrast in the image.

Note: Any modifiers to IMGACP are applied to the resultant, auto cropped image.

The same modifiers are used for image ship and image auto crop. The following command was used to take and crop an image that had the white value lowered and the edge sharpen filter on:

IMGSNP75W;IMGACP14E

Document Reader Imaging Guide 1 - 5

IMGSHP/IMGACP Modifiers

Example of Infinity Filter off (0A) from approximately 12 feet (3.66m) away:

Example of Infinity Filter on (1A) from approximately 12 feet (3.66m) away:

Example of Compensation at 0C: Example of Compensation at 1C:

A - Infinity Filter

Enhances pictures taken from very long distances (greater than 10 feet or 3m). The Infinity Filter should not be used with

Image Auto Crop - IMGACP (page 1-5).

0A Infinity filter off (default) 1A Infinity filter on

C - Compensation

Flattens the image to account for variations in illumination across the image.

0C Compensation disabled (default) 1C Compensation enabled

D - Pixel Depth

Indicates the number of bits per pixel in the transmitted image (KIM or BMP format only).

8D 8 bits per pixel, grayscale image (default) 1D 1 bit per pixel, black and white image

1 - 6 Document Reader Imaging Guide

E - Edge Sharpen

Example of Edge Sharpen at 0E: Example of Edge Sharpen at 24E:

Example of Histogram Stretch at 0H: Example of Histogram Stretch at 1H:

An edge sharpen filter cleans up the edges of an image, making it look cleaner and sharper. While edge sharpening does make the image look cleaner, it also removes some fine detail from the original image. The strength of the edge sharpen filter can be entered from 1 to 24. Entering a 23E gives the sharpest edges, but also increases noise in the image.

0E Don’t sharpen image (default) 14E Apply edge sharpen for typical image ne Apply edge sharpen using strength n (n = 1-24)

F - File Format

Indicates the desired format for the image.

0F KIM format 1F TIFF binary 2F TIFF binary group 4, compressed 3F TIFF grayscale 4F Uncompressed binary (upper left to lower right, 1 pixel/bit, 0 padded end of line) 5F Uncompressed grayscale (upper left to lower right, bitmap format) 6F JPEG image (default) 8F BMP format (lower right to upper left, uncompressed)

H - Histogram Stretch

Increases the contrast of the transmitted image. Not available with some image formats.

0H No stretch (default) 1H Histogram stretch

Document Reader Imaging Guide 1 - 7

I - Invert Image

Example of image with Invert Image set to 1ix:

Example of image not inverted: Example of image

with Invert Image set to 1iy:

Example of Noise Reduction On (1if):Example of Noise Reduction Off (0if):

Invert image is used to rotate the image around the X or Y axis.

Note: This feature should only be used with Image Ship - IMGSHP (page 1-5). Using this feature with Image Auto Crop -

IMGACP (page 1-5) may produce undesired results since Image Auto Crop attempts to rotate an image to a horizontal

display.

1ix Invert around the X axis (flips picture upside down) 1iy Invert around the Y axis (flips picture left to right)

IF- Noise Reduction

Used to reduce the salt and pepper noise in an image.

0if No salt and pepper noise reduction (default) 1if Salt and pepper noise reduction

1 - 8 Document Reader Imaging Guide

IR - Image Rotate

Example of Image Rotate set to 0

Example of Image Rotate set to 2

Example of Image Rotate set to 1

Example of Image Rotate set to 3

Example of Adaptive Text Filter On (1iu):Example of Adaptive Text Filter Off (0iu):

Note: This feature should only be used with Image Ship - IMGSHP (page 1-5). Using this feature with Image Auto Crop -

IMGACP (page 1-5) may produce undesired results since Image Auto Crop attempts to rotate an image to a horizontal

display.

0ir Image as snapped (rightside up) (default) 1ir Rotate image 90 degrees to the right 2ir Rotate image 180 degrees (upside down) 3ir Rotate image 90 degrees to the left

IU - Image Adaptive Text Filter

The Adaptive Text Filter automatically sharpens the edges and smooths the area between the edges of text in an image. The Adaptive Text Filter enhances images of documents such as ID cards and prescriptions, resulting in crisper text.

See U - Document Image Filter (page 1-12) for information about setting the Document Image Filter manually.

Note: The Adaptive Text Filter should not be used concurrently with the IS - Unsharp/Brighten Filter.

0iu Adaptive Text Filter off (default) 1iu Adaptive Text Filter on

Document Reader Imaging Guide 1 - 9

IS - Unsharp/Brighten Filter

Example of Unsharp/Brighten Filter Off (0

): Example of Unsharp/Brighten Filter On (1

Example of Gamma Correction set to 50K:

Example of Gamma Correction set to 0K:

Example of Gamma Correction set to 255K:

The Unsharp/Brighten Filter automatically sharpens the text and brightens the contrast of the image, making text more readable. This is similar to the Image Adaptive Text Filter, however it brightens the image as well. You should test both image processing techniques to determine which filter works best for your environment.

Note: The Unsharp/Brighten Filter should not be used concurrently with the IU - Image Adaptive Text Filter.

0is Unsharp/Brighten Filter off (default) 1is Unsharp/Brighten Filter on

J - JPEG Image Quality

Sets the desired quality when the JPEG image format is selected. Higher numbers result in higher quality, but larger files. Smaller numbers result in greater amounts of lossy compression, faster transmission times, lower quality, but smaller files.

(Default = 50)

nJ Image is compressed as much as possible while preserving quality factor of n (n = 0 - 100)

0J worst quality (smallest file) 100J best quality (largest file)

K - Gamma Correction

Gamma measures the brightness of midtone values produced by the image. You can brighten or darken an image using gamma correction. A higher gamma correction yields an overall brighter image. The lower the setting, the darker the image. The optimal setting for text images is 50K.

0K Gamma correction off (default) 50K Apply gamma correction for brightening typical document image nK Apply gamma correction factor n (n = 0-1,000)

1 - 10 Document Reader Imaging Guide

L, R, T, B, M - Image Cropping

Example of Image Crop set to 300L:

Example of Image Crop set to 300R:

Example of Image Crop set to 200T:

Example of Image Crop set to 200B:

Uncropped Image:

Example of Image Crop set to 238M:

Note: Image Cropping should not be used with Image Auto Crop - IMGACP (see page 1-5).

Ships a window of the image by specifying the left, right, top, and bottom pixel coordinates. Device columns are numbered 0 through 1279, and device rows are numbered 0 through 959.

nL The left edge of the shipped image corresponds to column n of the image in memory. Range: 000 - 1279.

(Default = 0)

nR The right edge of the shipped image corresponds to column n - 1 of the image in memory. Range: 000 - 1279.

(Default = all columns)

nT The top edge of the shipped image corresponds to row n of the image in memory. Range: 000 - 959. (Default =

nB The bottom edge of the shipped image corresponds to row n - 1 of the image in memory. Range: 000 - 959.

(Default = all rows)

Alternately, specify the number of pixels to cut from the outside margin of the image; thus only the center pixels are transmitted.

nM Margin: cut n columns from the left, n + 1 columns from the right, n rows from the top, and n + 1 rows from the

bottom of the image. Ship the remaining center pixels. Range: 0 - 478.

(Default = 0, or full image)

P - Protocol

Used for shipping an image. Protocol covers two features of the image data being sent to the host. It addresses the protocol used to send the data (Hmodem, which is an Xmodem 1K variant that has additional header information), and the format of the image data that is sent.

0P None (raw data) 2P None (default for USB) 3P Hmodem compressed (default for RS-232) 4P Hmodem

Document Reader Imaging Guide 1 - 11

S - Pixel Ship

Example of Pixel Ship set to 1S:

Example of Pixel Ship set to 2S:

Example of Pixel Ship set to 4S:

Example of Pixel Ship set to 3S:

Example of Document Image Filter set to 0U:

Example of Document Image Filter set to 26U:

Pixel Ship sizes an image in proportion to its original size. It decimates the image by shipping only certain, regularly spaced pixels. For example, 4S would transmit every fourth pixel from every fourth line. The smaller number of pixels shipped, the smaller the image, however, after a certain point the image becomes unusable.

1S ship every pixel (default) 2S ship every 2nd pixel, both horizontally and vertically 3S ship every 3rd pixel, both horizontally and vertically

U - Document Image Filter

Allows you to input parameters to sharpen the edges and smooth the area between the edges of text in an image. This filter should be used with gamma correction (see page 1-10), with the document reader in a stand, and the image captured using the command:

IMGSNP1P0L168W90%32D

This filter typically provides better JPEG compression than the standard E - Edge Sharpen command (see page 1-13). This filter also works well when shipping pure black and white images (1 bit per pixel). The optimal setting is 26U.

Note: If you want to use an automatic image filter, rather than changing these settings manually, refer to IU - Image Adaptive

Text Filter (page 1-9).

0U Document image filter off (default) 26U Apply document image filter for typical document image nU Apply document image filter using grayscale threshold n. Use lower numbers when the image contrast is lower.

1U will have a similar effect to setting E - Edge Sharpen (page 1-7) to 22e. Range: 0-255.

1 - 12 Document Reader Imaging Guide

V - Blur Image

Example of Blur Image Off (0V): Example of Blur Image On (1V):

Image used for histogram: Histogram of image at left:

Smooths transitions by averaging the pixels next to the hard edges of defined lines and shaded areas in an image.

0V Don’t blur (default) 1V Blur

W - Histogram Ship

A histogram gives a quick picture of the tonal range of an image, or key type. A low-key image has detail concentrated in the shadows; a high-key image has detail concentrated in the highlights; and an average-key image has detail concentrated in the midtones. This modifier ships the histogram for an image.

0W Don’t ship histogram (default) 1W Ship histogram

Document Reader Imaging Guide 1 - 13

Intelligent Signature Capture - IMGBOX

Example of Image Width set to 200A: Example of Image Width set to 600A:

IMGBOX allows you to configure the size and location of a signature capture area relative to its proximity to a barcode. This allows you to tailor a signature capture area to a specific form. In order to use IMGBOX, you need a set form where the signature box location is in a known location relative to a barcode. You can input the overall size of the signature area, as well as specify how far the signature area is from the barcode, vertically and horizontally. You can also set the resolution and file format for the final output of the signature capture image.

Note: IMGBOX commands can only be triggered by one of the following types of barcodes: PDF417, Code 39, Code 128, Aztec,

Codabar, and Interleaved 2 of 5. Once one of these symbologies has been read, the image is retained for a possible IMGBOX command.

The following IMGBOX example was executed and viewed using QuickView software. This software is available at

www.handheld.com. Click on Services and Support-Download Software. Select 4800dr from the Products list, then select

QuickView Software Utility. Below is an example of a signature capture application. In this example, the aimer is centered over the signature capture area

and the trigger is pressed. A single beep is emitted, indicating that the imager has read a Code 128 barcode and the data has been transferred to the host. An IMGBOX command may now be sent from the host to specify the coordinates of the signature capture area below that code, and indicating that only that area containing the signature should be transferred as an image to the host.

To see this example, align the aimer with the signature area (not with the barcode), then press the trigger.

Send the following IMGBOX command string after the button push:

IMGBOX245w37h55y.

Note: Case is not important in the command string. It is used here only for clarity.

The following image is captured:

The IMGBOX commands have many different modifiers that can be used to change the size and appearance of the signature image output by the document reader. Modifiers affect the image that is transmitted, but do not affect the image in memory. Modifiers always begin with a number and end with a letter (case insensitive). Any number of modifiers may be appended to the IMGBOX command.

Note: The IMGBOX command will return a NAK unless a window size (width and height) are specified. See H - Height of

Signature Capture Area (page 1-15) and W - Width of Signature Capture Area (page 1-16).

IMGBOX Modifiers

A - Output Image Width

This option is used to size the image horizontally. If using this option, set the resolution (R) to zero.

1 - 14 Document Reader Imaging Guide

B - Output Image Height

Example of Image Height set to 50B: Example of Image Height set to 100B:

Example: IMGBOX245w37h55y.

Example of Gamma Correction set to 50K:

Example of Gamma Correction set to 0K:

Example of Gamma Correction set to 255K:

This option is used to size the image vertically. If using this option, set the resolution (R) to zero.