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MS-890 Reset ZERO FOCUS position

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  1. Connect to the ESP software.
  2. Enable Code 39 and send and save to reader.
  3. Place 7.5 mil barcode at 10 inches away from reader.
  4. Go into the Terminal window and type <K28UNLK,,1> into the terminal’s ‘Send’ bar.
  5. When you see:"Focus Setup: Place a .075 label @ 10in.  Hit return when ready" come up, hit ENTER.


  1. Use the + to focus out and to focus in.
  2. Zero Focus position = nnn 90% 7.5MIL, where nnn = 0 to 255 (the current focus position)
  3. When you achieve the high read rate (90% or better), Hit ENTER.
  4. The reader will show “Focus Setup Passed”
  5. To save the new Zero Focus, type <Zp> in the terminal screen.



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