What to do if my Motorola DS3508 Barcode Reader emits 4 short high beeps during decode attempt?
- CChris WhiteSep 13, 2025
Wait several seconds and scan again.

What to do if my Motorola DS3508 Barcode Reader emits 4 short high beeps during decode attempt?
Wait several seconds and scan again.
What to do if Motorola Scanner emits aiming pattern, but does not decode the bar code?
If your Motorola scanner emits the aiming pattern but fails to decode the bar code, consider the following: * The scanner might not be programmed for the correct bar code type. Program the scanner to read the specific type of bar code you are trying to scan. * The bar code symbol might be unreadable. Scan test symbols of the same bar code type to determine if the bar code is defaced. * The symbol may not be completely inside the aiming pattern. Move the symbol completely within the aiming pattern.
How to fix if Host displays scanned data incorrectly from Motorola Scanner?
If the host displays scanned data incorrectly from your Motorola scanner, consider these solutions: * The scanner might not be programmed to work correctly with the host. Scan the appropriate host type programming bar code. * For RS-232 connections, ensure the scanner's communication parameters match the host's settings. * If you are using a Keyboard Wedge configuration, program the system for the correct keyboard type, and turn off the CAPS LOCK key. * Program the proper editing options (e.g., UPC-E to UPC-A Conversion).
Why Motorola Scanner emits high/high/high/low beeps when not in use?
If your Motorola scanner emits high/high/high/low beeps when not in use, it indicates an RS-232 receive error. This is normal during a host reset. Otherwise, set the scanner's RS-232 parity to match the host setting.
What does it mean if Motorola Scanner emits 4 short high beeps during decode attempt?
If your Motorola scanner emits 4 short high beeps during a decode attempt, it means that the scanner has not completed USB initialization. Wait several seconds and try scanning again.
What does it mean if Motorola Scanner emits low/high beeps during programming?
If your Motorola scanner emits low/high beeps during programming, it indicates an input error or that the Cancel bar code was scanned. Scan the correct numeric bar codes within range for the parameter programmed.
Why does my Motorola DS3508 emit one high beep when not in use?
This is normal when Beep on is enabled and the digital scanner is in RS-232 mode.
What does it mean when my Motorola DS3508 emits low/high/low beeps?
This is normal when scanning the Code 39 Buffering Clear Buffer bar code or upon attempt to transmit an empty Code 39 buffer.
Why does my Motorola DS3508 emit high/high/high/low beeps when not in use?
This is normal during host reset. Otherwise, set the Motorola Barcode Reader's RS-232 parity to match the host setting.
Why does my Motorola DS3508 display scanned data incorrectly?
If your Motorola Barcode Reader displays scanned data incorrectly, it could be due to the following reasons: * The scanner isn't programmed to work with the host. Scan the appropriate host type programming bar code. * For RS-232, set the scanner's communication parameters to match the host's settings. * For a Keyboard Wedge configuration, program the system for the correct keyboard type, and turn off the CAPS LOCK key. * Program the proper editing options (e.g., UPC-E to UPC-A Conversion).
| Brand | Motorola |
|---|---|
| Model | DS3508 |
| Category | Barcode Reader |
| Language | English |
Provides general instructions for setting up, operating, maintaining, and troubleshooting the DS3508 digital scanner.
Lists the different configurations of the DS3508 digital scanner included in this guide.
Provides contact information and procedures for obtaining technical or systems support for the equipment.
Overview of the DS3508 scanner's capabilities and design for comfort and ease of use.
Details the supported interface types for the DS3508 digital scanner, including USB, RS-232, and IBM 468X/469X.
Guides on how to install and secure the interface cable for the digital scanner.
Lists required and optional accessories available for purchase for the DS3508 digital scanner.
Overview of beeper and LED definitions, scanning techniques, and decode zone diagrams.
Defines beep sequences and patterns used by the scanner to indicate status during scanning.
Explains the meaning of the two-color LED indicators used by the scanner to display status.
Details how to operate the scanner in hands-free (presentation) and hand-held modes.
Provides depth of field specifications for different symbol densities for DS3508-SR/HD/DP models.
Covers scanner maintenance, troubleshooting, technical specifications, and signal descriptions.
Details the recommended maintenance procedures for the scanner, focusing on cleaning the scan window.
Provides solutions for common problems encountered with the digital scanner's operation.
Lists the physical and performance characteristics, including dimensions, weight, and symbology support.
Explains how to program scanner functions and activate features using programming bar codes.
Details user preference parameters and how to change them using bar codes.
Covers miscellaneous scanner settings like Code ID characters, prefix/suffix values, and data transmission format.
Describes imaging preference features and programming bar codes for selecting them.
Details various imaging settings including operational modes, illumination, and snapshot parameters.
Explains how to crop captured images to specific pixel addresses for desired output.
Covers enabling/disabling signature capture and output file formats for captured signatures.
Describes how to set up the digital scanner with a USB host.
Provides instructions and diagrams for connecting the scanner to a USB host or hub.
Lists the default settings for USB host parameters.
Details USB host parameters, including device type and status handshaking.
Describes how to set up the digital scanner with an RS-232 host, including point-of-sale devices.
Provides instructions for directly connecting the digital scanner to a host computer via RS-232.
Lists the default settings for RS-232 host parameters.
Details RS-232 host parameters, including terminal-specific settings.
Describes how to set up the digital scanner with an IBM 468X/469X host system.
Provides instructions for connecting the digital scanner directly to the host interface.
Lists the default settings for IBM host parameters.
Details IBM host parameters, specifically the port address configuration.
Explains setting up a Keyboard Wedge interface, translating bar code data into keystrokes.
Provides instructions for connecting the keyboard wedge interface using a Y-cable.
Lists the default settings for keyboard wedge host parameters.
Details keyboard wedge host parameters, including host types and country codes.
Describes setting up the scanner for OCR programming, including supported font types.
Lists the default settings for OCR parameters like orientation, lines, and security level.
Details parameters for enabling/disabling OCR fonts and setting variants.
Describes symbology features and provides programming bar codes for selecting them.
Lists the default settings for various symbologies, allowing parameter changes.
Covers settings for UPC/EAN symbologies, including enable/disable and check digit options.
Details settings for Code 128 symbology, including enable/disable and length configuration.
Covers settings for Code 39 symbology, including enable/disable and trioptic variants.
Introduces 123Scan², a PC-based software tool for scanner setup and configuration.
Explains how to connect the scanner cradle to a host computer for communication with 123Scan2.
Explains Advanced Data Formatting (ADF) for customizing data before host transmission.
Lists default settings for user preferences, including trigger mode and beeper settings.
Lists default settings for miscellaneous options like transmit code ID and prefix/suffix values.
Lists default settings for imaging preferences, including resolution and image quality.
Lists default settings for USB host parameters like device type and keystroke delay.
Lists default settings for RS-232 host parameters such as baud rate and parity.
Lists default settings for IBM host parameters, primarily port address.
Lists default settings for keyboard wedge host parameters like host type and country codes.
Lists default settings for OCR parameters like orientation and character sets.
Provides a table of code characters and their corresponding code types for programming.
Displays a sample bar code for the Code 39 symbology.
Displays sample bar codes for UPC-A (100%) symbology.
Provides bar codes representing numeric values for parameter configuration.
Lists ASCII values, full ASCII Code 39 encode characters, and corresponding keystrokes.
Explains CapCode as a pattern for signature capture and its identification capabilities.
Details the structure of a CapCode pattern, including start/stop patterns and capture areas.
The opening in an optical system defined by a lens or baffle that establishes the field of view.
A pattern of variable-width bars and spaces representing data in machine-readable form.
A digit used to verify a correct symbol decode by matching the resulting number to an arithmetic formula.
To recognize a bar code symbology and analyze the content of the scanned bar code.
Index entries related to numeric values and bar codes within the manual.











