Opticon LH2 User Manual

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Chapter 3
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Chapter 3
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Application Notes
Tips for Achieving High Throughput
In  some  applications  your  primary  objective  may  be  to  achieve  the  highest  possible 
throughput  rate.    The  following  list  identifies  the  parameters  and  imager  settings  that 
can maximize scanning and decode throughput speed.  Note, by emphasizing maximum 
throughput, other areas of performance may be affected.  For example, the number of non-
reads could increase.
If high throughput is critical, consider some or all of these settings:
 
• Only enable those symbologies that you will be decoding.
 
• Eliminate all suffixes and  prefixes.
 
• Minimize the number of redundant reads required before transmitting data.
 
• Transmit the decoded data at the highest baud rate, 115,200 baud.
 
• Disable buzzer functions.
Tips for Insuring Highest Data Integrity
There are several parameters that can enhance your confidence that the correct bar code 
data is transmitted.  Note that by emphasizing the accuracy and security of the data other 
areas  of  the  imager  operation  may  be  affected,  for  example,  you  may  not  achieve  the 
highest throughput.  
If accuracy and data integrity are critical, consider some or all of these settings:
• Program the imager to higher Decode Time.  For example, program the imager 
to decode a bar code exactly the same way with Extra Long Decode Time before 
transmitting the data.  The default settings for the LH2 are designed for optimal, 
general  purpose  performance  with  good  quality  symbols  on  typical  surfaces.  For 
poor quality barcodes or barcodes on non-standard surfaces (shiny, low-contrast), 
the unit may require more time to process the barcode before the system abandons 
the image and restarts on a new decode attempt. It may require manipulating LED’s 
too. 
• The quality of the printed bar code must be excellent. 
•  Do  not  use  a  symbology  with  poor  internal  verification,  or  subject  to  partial 
decodes, such as 2 of 5 or MSI/Plessey.
• Only enable those symbologies that you will be decoding.
• Transmit data at low baud rates to minimize communication errors.