REA ScanCheck 3n, Руководство пользователя

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Operating Manual Page 82 / 116 Copyright © REA Elektronik
REA ScanCheck 3n
V 1.2.0 24/02/2020
REA VERIFIER
5.6.1.3.1.7.2 Code 39-Full ASCII - Additional test criteria (optional code types)
The selection of Full ASCII switches the decoder to the Full ASCII
Mode. With this, code character pairs are used to additionally
encrypt small letters and special characters. Only if this code type is
selected are small letters and special characters decrypted and
presented with decoding.
With selection of the ANSI
function, the check of the ratio between
narrow and wide code elements is changed from the ratio values
specified in the ISO standard to the values specified in the ANSI
standard. ANSI permits a ratio of 1:2.5 to 1: 3.0 if the module width
is less than 0.5 mm. The ISO standard always permits a ratio of
between 1:2.0 and 1:3.0.
With activation of the check digit function
a check digit test takes
place with the standard code 39. With this, the check digit is tested
according to Modulo 43. If this function is not activated, no check digit test takes place.
5.6.1.3.1.7.3 PZN codes
The PZN code uses the normal code 39 symbology, although with a few limitations. With the PZN
code, a pharmaceutical article number is depicted for use in a pharmacy. PZN
is the abbreviation
for the German phrase ‘
P harma Z entral N
ummer’ - in English: Pharma Central Number.
This type of code does not have any additional selectable test parameters.
Testing the check digit is mandatory and cannot be switched off.
The PZN code always starts with an “
*
” as the first character, followed by a dash “
-
” and then
followed by a six-digit sequence and a check digit.
This check digit is only generated from the 6 preceding characters without the dash. The code
always ends with a “
*
” as the stop character.
The ratio (the ratio of narrow to wide bars) is nominally given as 1:2.5 and is permitted and tested
with a tolerance of 1:2.0 to 1:3.0.
Furthermore, the specification requires a light source with red light and with a wavelength of 670
nm for checking the PZN code. For this reason, it is strongly recommended that colour
combinations only be used, which can also be easily read with red light scanners (630 nm to 680
nm). The REA ScanCheck 3n always uses a laser light source with a wavelength of 670 nm. The
measuring aperture should be 6 mil. The permissible code size X is between 0.187 mm and 0.450
mm. With the nominal size of a PZN code with a module size of X=0.25 mm, a minimum code
height of
8 to 20 mm is required. The “PZN” text must always be specified in the plain text line, but
must never be additionally coded in the bar code.