Agilent Technologies G2615A Manuale operativo

Agilent Technologies

Agilent G2615A

Bar Code Reader

User Information

2Bar code reader

Notices

No part of this manual may be reproduced in

any form or by any means (including elec-

tronic storage and retrieval or translation

into a foreign language) without prior agree-

ment and written consent from Agilent

Technologies, Inc. as governed by United

States and international copyright laws.

Manual Part Number

G2615-90007

Edition

First edition, May 2002

Printed in USA

Agilent Technologies, Inc.

2850 Centerville Road

Wilmington, Delaware 19808-1610 USA

Safety Notices

CAUTION

A CAUTION notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly

performed or adhered to, could

result in damage to the product or

loss of important data. Do not

proceed beyond a CAUTION notice

until the indicated conditions are

fully understood and met.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

formed or adhered to, could result

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fully understood and

met.

Agilent G2615A Bar Code Reader

Agilent Technologies

User Information

Parts identification 4

Installation 5

About bar codes 7

Label and vial information 13

Applying labels 14

In case of difficulty 18

The Agilent G2615A Bar Code Reader (BCR) attaches to the tray

of a 7683 Automatic Sampler. It reads labels attached to sample

vials for positive sample identification.

•The reader attaches directly to the 7683 tray. A provided

spacer may be required to attach some trays.

•The G2615A Bar Code Reader is not compatible with trays

for 18596A, 18596B or 18596C samplers.

•The 7683 tray must be delivered from Agilent with A.01.04 or

greater firmware. Field upgrade to A.01.04 or greater is not

adequate.

You can verify your tray firmware using the 6890N keypad and

display. Select Options/Diagnostics/Instrument status. Scroll

to observe what firmware is installed on the G2614A tray.

6890A and 6890 Plus GCs will not display the tray firmware.

Contact your local Agilent office for assistance.

4Bar code reader

User Information

Parts identification

Figure 1 identifies those parts in the installation kit that may

not be easily recognized.

Figure 1 Parts identification

Label applicator

Vial plates

Roll of labels

Labeled vial

Long screws

Short screws

2-mm hex wrench

Bar code reader with mounting bracket

Spacer

Cable

User Information

Bar code reader 5

Installation

1Locate the recess in the bottom front of the tray. The BCR

must be located at this location. See Figure 2.

2Locate the mounting screw holes. Some trays have two holes

that are flush with the bottom of the recess. Those trays

require the spacer. Other trays have raised areas around

three mounting holes and do not need the spacer.

The tray shown in Figure 2 is the two hole version. This style

tray requires use of the spacer to mount the BCR.

3If the spacer is needed, align the holes in the spacer with the

mounting holes in the bottom of the tray. Place the mounting

bracket under the spacer, insert the two long screws and

tighten them firmly.

If the spacer is not needed, place the mounting bracket

under the mounting holes in the bottom of the tray. Insert the

three short screws and tighten them firmly.

4Run the cable to the back of the tray and connect it to the

Barcode receptacle. Tighten the two securing screws. See

Figure 3.

Figure 2 Mounting location

Mounting screw holes

Spacer mounts in this recess

if needed

6Bar code reader

User Information

5This completes bar code reader installation. See the section

on Automatic Samplers in your Agilent 6890 Series Gas

Chromatograph user information to configure the bar code

reader.

Figure 3 Connecting the cable

Barcode receptacle

User Information

Bar code reader 7

About bar codes

A bar code is a printed pattern of bars and spaces that encodes

information. The most frequently encountered bar code is the

UPC code (Universal Product Code) that appears on most

packaged products in the supermarket.

The information in a UPC symbol is not the price of the product;

it is simply a number that has been assigned to that product to

distinguish it from all others. The supermarket checkout

(actually, the store computer does it).

The Agilent Bar Code Reader (BCR) reads and decodes several

different bar codes. The most useful one for general laboratory

use is the Standard 3 of 9 Code, which encodes both letters and

numbers and allows variable message length. The others may

prove useful in special cases. The preprinted labels available

from Agilent are in Standard 3 of 9 Code without a checksum.

See Table 1.

Bar code elements

All codes represent the characters as a pattern of dark bars and

light spaces. Some codes only distinguish between narrow and

wide bars, some have several possible bar widths, some use

spaces to encode characters, others use spaces only as bar

separators, and so on. Why so many different ways of

accomplishing the same simple task? They were developed by

different groups at different times and for different purposes.

8Bar code reader

User Information

Standard 3 of 9 code

Each character is represented by five bars and the four spaces

between them. The bar/space patterns are defined so that

exactly three are wide and the rest narrow. Characters are

separated by a narrow space. See Table 1.

The three wide and six narrow requirement makes each

character self-checking, but an additional checksum character

may be inserted in the message if desired. The checksum is

generated by adding the check values for all the message

characters, dividing by 43, and using the remainder to select the

checksum character. If a checksum is used, the character is

placed after the message characters.

When a checksum is used, the bar code reader verifies that the

checksum in the message matches the checksum calculated

from the message characters, but does not include the

checksum character in the returned message.

An extended 3 of 9 code includes the complete ASCII character

set, but it is not read by the bar code reader.

Ta b l e 1 Standard 3 of 9 code properties

Character set Capital letters: A to Z (check values 10 to 35)

Numerals: 0 to 9 (check values 0 to 9)

Other characters:

- . space $ / + % (check values 36 to 42)

Message length Variable

Checksum Optional

User Information

Bar code reader 9

Interleaved 2 of 5 code

Message length, including the checksum character if used, must

be an even number. If it is not, a leading zero is inserted. See

Table 2.

Each character is represented by five elements, of which two

are wide and three are narrow. Characters in odd-numbered

positions are encoded with five bars. Characters in even

numbered positions are encoded with the five spaces associated

with the preceding even character. There is no character

separator.

EAN/JAN-13 codes

The printed EAN/JAN-13 symbol is divided into left and right

halves by a pattern of narrow bars and spaces. Two different

code pattern sets are defined for the left side and one for the

right side. Bars and spaces may be 1, 2, 3, or 4 units wide. See

Table 3.

Ta b l e 2 Interleaved 2 of 5 code properties

Character set Numerals: 0 to 9 (check values 0 to 9)

Message length Variable (may require a dummy character)

Checksum Optional

10 Bar code reader

User Information

The printed EAN/JAN-13 symbol is divided into left and right

halves by a pattern of narrow bars and spaces. Two different

code pattern sets are defined for the left side and one for the

right side. Bars and spaces may be 1, 2, 3, or 4 units wide.

The left side contains the code patterns for the

country-of-origin characters and the first five data characters.

The last five data characters and the checksum character are on

the right side.

The first country-of-origin character determines which of the

left side pattern sets to use for the rest of the left side

characters. For example, call the left side pattern sets A and B.

If the first country-of-origin character is 0, the second country

of origin character and the first five data characters will all be

encoded using pattern set A (AAAAAA). If it is 1, the pattern

sets for the left side are AABABB.

A different pattern set is used for the right side characters.

EAN/JAN-8 codes

This is a variation on the EAN/JAN-13 codes. The left side

consists of the two country-of-origin characters and the first

two data characters, all encoded using the left side A pattern

set.

The right side contains the last three data characters and the

checksum character, all encoded as right side characters.

Ta b l e 3 EAN/JAN-13 code properties

Character set Numerals: 0 to 9

Message length 13 (2 country-of-origin characters, 10 data characters,

1 checksum character)

Checksum Required

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