Adesso NUSCAN 3200 series - Manual (Page 8)

c. Serial Port (RS-232) Connection
NOTE: For Serial port (RS-232), please plug the power connector of 5V power adapter
to RS232 cable.
1 Be sure that Host computer is turned off.
1. Ensure that all connections are secure.
2. Turn on your Host.
3. Aim the scanner at a barcode. Ensure that the scanner is in trigger mode
(default), and press the trigger.
4. On successful decode, the blue LED light will turn on and off and the scanner will
beep once.
Tip
Do not hold the scanner directly over a barcode at 90˚. Scanning light bounces
directly back into the scanner from the barcode label is known as specular reflection
which will create a "dead zone" where decoding is difficult. Practice a few times to find
what range of angles works best.
Maintenance
Cleaning the scan window is the only maintenance required. A dirty window may
affect scanning accuracy.
Wipe the scanner window gently with a lens tissue or other material suitable for
cleaning optical material.
Do not spray water or other cleaning liquids directly onto the window.
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