RF (Radio Frequency) Module Operation

The cordless system uses a state-of-the-art two-way Bluetooth radio to transmit and receive data between the image scanner and the base. Designed for point- to-point and multipoint-to-single point applications, the radio operates using a license free ISM band, which sends relatively small data packets at a fast data rate over a radio signal with randomly changing frequencies, makes the cord- less system highly responsive to a wide variety of data collection applications and resistant to noisy RF environments. Bluetooth Class 2 power level provides range of 33 feet (10m) depending on the environment.

Cordless Image Scanner

The cordless image scanner enables fast and accurate bar code scanning using a non-contact linear image scanner.

The image scanner is comprised of a linear image scanner, a decode/control assembly, and an RF communication module. The scan engine performs the bar code image illumination and sensing. The decode/control assembly coordinates the central communication activities including: capturing and decoding the bar code image data, performing software activities (parameter menuing, visual indicator support, low battery indication), and data translation required for the host system. The RF communication module performs the data exchange between the image scanner and the base.

System Conditions

The components of the cordless system interact in specific ways as you associate an image scanner to a base, as you move an image scanner out of range, bring an image scanner back in range, or swap image scanners between two cordless systems. The following information explains the cordless system operating conditions.

Linking Process

Once an image scanner is placed into the base, the image scanner’s battery charge status is checked, and software automatically detects the image scanner and links it to the base depending on the selected link mode.

Image Scanner Is Out of Range

The cordless image scanner is in communication with its base, even when it is not transmitting bar code data. Whenever the image scanner can’t communicate with the base for a few seconds, it is out of range. If the image scanner is out of range and you scan a bar code, the image scanner issues a triple beep indicating no communication with the base. In addition, your image scanner and base can sound an alarm if programmed to emit an alarm. See Out-of- Range Alarm on page 1-12.

Image Scanner Is Moved Back Into Range

The image scanner re-links if the image scanner or the base have been reset or out of range. If the image scanner re-links, you will hear a single chirp when the re-linking process (uploading of the parameter table) is complete.

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