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CT Buyer's Guide Version

Discover how to select the right CT in this updated edition

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A step-by-step guide to help you successfully decide on the best CT scanner for your facility by answering these three important questions:

1. Which features do I need on my next CT scanner?

2. How much is this CT scanner going to cost me?

3. How do I pick the right vendor?

Basics

There are two main types of scannable barcodes: one dimensional (1D) and two dimensional (2D). One-dimensional, or linear, barcodes were the first barcode type to be used. They hold a limited amount of information and are still common today. Two-dimensional barcodes can hold more information and offer expanded options compared to their 1D counterparts.

1D Scanners

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One-dimensional (1D) or linear barcodes have been used since . They can only hold up to 25 characters, depending on the type. 1D laser scanners were developed to reflect light off of the barcode and read the information that bounces back.

2D Scanners

2D barcodes can hold up to 2,000 characters because they read both horizontally and vertically. Two-dimensional (2D) barcode scanners are called area imagers and scan by taking a picture of the barcode. The image is optimized for contrast and decoded to read the information. 2D barcode scanners work on both 2D and 1D barcodes.

1D Laser Scanners

1D laser barcode scanners capture information by reflecting light onto the barcode and reading the reflected information. They&#;re economical to purchase; however, they are limited to a 2-24 inch scanning range. They also struggle to read damaged barcodes.

1D Linear Imagers

1D linear imagers use CCD technology, similar to a digital camera. An array of hundreds of light sensors captures and converts the image into readable data. This technology can read poor or damaged barcodes at two feet or greater.

2D Area Imagers

Full 2D area imagers capture a more detailed and intelligent image. They can read any type of barcode, including 1D, stacked, 2D, QR codes and more, and can scan any orientation from over three feet away, reducing scanning labor. They can also read a barcode off of a monitor or screen. The overall improved performance of 2D area imagers make them an intelligent choice for long-term scanning.

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