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Targeting and Reading Techniques

The HE40T utilizes digital camera technology to take a picture of a symbol. Once an image is captured, the HE40T utilizes advanced decoding algorithms to extract data from the captured image.

The reader features left and right triggers. These triggers may be programmed to perform various features. The reader is shipped with the left trigger and right trigger functioning as a decode symbol command.

The H2 Cabled Handle and BH1/BH2 Battery Handle each feature a trigger on the handle. The two triggers on the top of the reader also work when the handle is attached.

FIGURE 1-37. 

Handle and Trigger

Note: The trigger on the handle attachment is light. Squeezing too hard may damage the reader.

To read a symbol with the HE40T:

  • The HE40T features omnidirectional decoding. Center the symbol in any orientation within the laser dot aiming pattern (Figure 1-38).

FIGURE 1-38. 

Centering the Symbol Within the Laser Dot

Note: The HE40T can read a symbol that is not centered; however, the HE40T performs best when a code is centered.

The HE40T features omnidirectional decoding. Aiming the targeting laser at the center of the symbol ensures the best performance for decoding. The HE40T can read a symbol that is not centered and, under certain circumstances if multiple symbols are within the field of view, the user must take care of which symbol is read. The decoder will start from the center, but if the center symbol is not decodable, it may decode another symbol, if multiple symbols are present within the field of view.

  • The HE40T was developed to decode both very small 2-D symbols and larger 1-D symbols. The reader features two imagers to create an innovative dual decode zone. The HE40T features a high speed processor and decodes both zones simultaneously, by default. The reader has one imager focused on a near-field for smaller codes (optimal focal point is 4 inches) and one imager focused on a far-field for larger codes (optimal focal point 9 inches). To read smaller symbols, move the HE40T closer to the symbol. To read larger symbols, move the reader farther away from the symbol. The entire HE40T decode zone varies between two (2") and twenty (20+") or more inches.
  • Hold the HE40T still - DO NOT SWIPE OR MOVE THE READER. Press the trigger until the HE40T beeps, indicating the code has been successfully decoded.
  • To read a symbol with a shiny background, hold the HE40T slightly tilted to avoid the reflected light from the LEDs.
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