MAINTENANCE AND ACCESSORIES
SECTION
8.5
8.5. 1
8,5,2
VER,V09F
BAR CODES AND LIGHT PENS
As an ·option HUI,'TER. is capable of reading 2 types of barcodes:
a) Code 39
b) EAN 8/13
To provide these facilities software packages are loaded into
the file system of HUNTER as permanent files. Access to these
files is not allowed to the user. However, the operating system
accesses the files in order to support the wand option when
required in programs utilising the Basic statements such as
WINPUT, WINCHR etc. Access to the files is totally transparent
to the user.
Other codes are available to special order,
If.an attempt is made to access these files without them being
present, then a_
11
syste!f) file error" will be displayed.
See section 9,9,3, LEMO CONNECTOR, for details of connecting and
removing the LEMO plug, ·
BAR CODE SCANNING. TECHNIQUES
There are a few simple rules to follow when usfng a hand held
wand: - ·
Check that the tip _of the wand is free from dirt. Prolonged u5e
of the wand may read to a build up of dust inslde the tip,
covering the lens. To check for this the tip must be unscrewed
and,
if dust is found, a gentle wipe with ·a soft cloth will
remove it, The performance of the wand will not be immediately
affected by a build up of dust, -but rather a gradual decrease in
the reliability of the wand operation, A weekly check should be
all that is required for normal use.
The tips of 'certain wands are made of plastic and as such,
pressing the wand flrmly onto the'·bar'code will result in tip
wear. Thi_s will affect the wand performance since the focal
·1ength of the lens will not' coinc)de witn the distance between
· me harc6de and toe lens,_he,_ the bar c6de will appear to be
lout of focus•.' Tt is recon1mended that the 'wand be held gently
in the hand and moved lightly across the bar code for best
results,
It is recommended that the scan should be carried out at a
constant speed with the wand in contact with the barcode
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