Worth Data RF Terminal 7000 Spécifications télécharger pdf (Page 96)

must first enable them using the RF Terminal Setup Menu.

NOTE: Enabling the supplements disallows the reading of UPC codes from right to left to assure that the 2

and 5 digit supplements are not get missed. Coupon codes can be read from right to left or left to right.

ISBN Specifications

ISBN (International Standard Book Numbering) bar codes are essentially EAN-13 with a 5 digit supplement,

where the first 3 digits are the Bookland country codes of 978 for books and 977 for periodicals. Although the

bar code contains 18 characters, the ISBN format uses only 9 of them, along with a newly calculated Mod-11

check digit. For example, a bar code containing the numbers 978055337062153495 would transmit as

0553370626 in the ISBN format.

The RF Terminal has the option of transmitting in the ISBN format.

ISBN 0-553-37062

ISBN specifications are available from:

American National Standards Institute

Customer Service

11 West 42

St.

New York, NY 10036

http://web.ansi.org

document ISO 2108:1992

The UPC/EAN checksum character

The last character in a UPC-A, UPC-E, UPC-E1, EAN-13 or EAN-8 bar code is the checksum. For

reference, these are the methods of calculation:

Checksum calculation for UPC-A, EAN-13 and EAN-8

Use Worth Data's phone number (it's not a real UPC-A code) as sample data:

18314589938

Assign even and odd positions, starting at the right and moving left:

8 3 9 9 8 5 4 1 3 8 1

odd even odd even odd even odd even odd even odd

 Starting with the leading digit, 8, take the sum of all the characters in the odd positions.

8 + 9 +8 + 4 + 3 + 1 = 33

 Multiply the result of step 1 by 3.

33 x 3 = 99

 Now take the sum of all the even-position characters.

3 + 9 + 5 + 1 + 8 = 26

 Add the result in Step 2 to the result in Step 3.

99 + 26 = 125

 Subtract the result from the next higher multiple of 10.

Next higher multiple of 10 over 125 = 130

130 - 125 = 5

1 2 ... 91 92 93 94 95 96 97 98 99 100 101 102 103

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Worth Data RF Terminal 7000 Spécifications Page 96