SIST ETS 300 280:2003/A1 E1:2003

• Abstract:

  Details of the terminal tests for equipment offering G4, Class 1 facsimile functionality, to be updated to incorporate matters arising in ITU-T SG8.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.050.30 - Equipment for telex, teletext, telefax
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• ICS: 35.180 - IT Terminal and other peripheral equipment
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 280/A1 ed.1 (1996-02) - Terminal Equipment (TE); Facsimile group 4 class 1 equipment on the Integrated Services Digital Network (ISDN) Terminal testing

SIST ETS 300 280:2003/A1 E1:2003 is the Slovenian adoption of ETS 300 280 Amendment 1 from ETSI. It covers terminal testing for Terminal Equipment (TE) with Facsimile group 4 class 1 functionality on the Integrated Services Digital Network (ISDN), and it updates the scanning tests used for that equipment. The amendment aligns the tests with the standardized test charts in ITU-T Recommendation T.22.

What does SIST ETS 300 280:2003/A1 E1:2003 specify?

SIST ETS 300 280:2003/A1 E1:2003 specifies an amendment to the test method for Group 4 facsimile terminals on ISDN. In practice, it tells manufacturers and test labs how the terminal should be checked when the scanner produces and transmits document images.

The document is organized as a short amendment to the base European Telecommunications Standard ETS 300 280 (1994). It updates the normative reference list in clause 2 and replaces clause 6 on scanning tests. The key technical content is in Table 3, which sets out the scanner checks that now use ITU-T Recommendation T.22 chart no. 4.

What are the key requirements of SIST ETS 300 280:2003/A1 E1:2003?

The amendment centers on the scanning behavior of the facsimile terminal. It changes the test basis from the older ITU-T chart reference to the T.22 standardized test chart, so the scanner is assessed against the chart actually intended for document facsimile transmission.

Updated test reference for scanning tests

Clause 2 replaces the former chart reference with ITU-T Recommendation T.22. This matters because the test results must be judged against the correct standardized document chart, not the deleted one.

Basic scanned line length

Table 3 includes a test for basic scanned line length. The SUT scans and transmits the specified T.22 chart, and the decoded image is checked for correct horizontal scale. In practice, this confirms that the scanner reproduces document width accurately enough for facsimile use.

Scanning density

Table 3 also includes a scanning density test. The decoded vertical scale of the transmitted chart is checked. For a reader, this is the practical check that the scanner samples the document with the intended density and that the transmitted image is not stretched or compressed in one direction.

Position of the document

A third test in Table 3 checks the position of the document. The transmitted data must show that scanning starts close to the beginning of the test chart. This matters because a mispositioned scan can clip the first part of a page or shift the image on receipt.

Updated scanning test package

The amendment replaces clause 6 with a compact test set focused on these scanner checks. That means the main compliance task is no longer general facsimile behavior, but the specific image capture and transmission characteristics of the terminal scanner.

What terms does SIST ETS 300 280:2003/A1 E1:2003 define?

• TE - Terminal Equipment, the equipment at the user side that is being tested for ISDN facsimile operation.
• ISDN - Integrated Services Digital Network, the network environment in which the facsimile terminal operates.
• SUT - The system under test, meaning the specific terminal being measured in each test.
• ppi - Dots per inch, a scan density unit used to describe the document sampling rate.
• pels - Picture elements, the decoded image samples used to judge scan length and density.
• ITU-T - The standards body whose Recommendation T.22 supplies the test chart used in the amended scanning tests.

Who uses SIST ETS 300 280:2003/A1 E1:2003?

This amendment is used by manufacturers of Group 4 facsimile terminal equipment, test laboratories, and conformity assessment teams working on ISDN terminal testing. Quality managers and buyers can use it to understand what scanner performance is being verified before acceptance or certification. It is also relevant to engineering teams updating legacy test programs from the older T.21 chart basis to the T.22 basis.

What changed in SIST ETS 300 280:2003/A1 E1:2003 from the previous edition?

SIST ETS 300 280:2003/A1 E1:2003 amends ETS 300 280 (1994). The amendment states that the original scanning tests used test charts from ITU-T Recommendation T.21, which were deleted and replaced by charts from ITU-T Recommendation T.22. It therefore updates the normative reference and rewrites the scanning test clause to use T.22 chart no. 4.

Which standards are used with SIST ETS 300 280:2003/A1 E1:2003?

The named companion standard is ITU-T Recommendation T.22 (1993), which provides standardized test charts for document facsimile transmissions. The amendment uses that recommendation directly in the updated scanning tests, so it is the key external document a test lab needs alongside the base ETS 300 280 standard.

What does the SIST ETS 300 280:2003/A1 E1:2003 document contain?

This amendment contains the front matter, a foreword explaining why the update was made, and the amendment instructions themselves. The technical body replaces one normative reference in clause 2 and replaces clause 6 with a new scanning test section. Table 3 gives the three scanner checks used for the facsimile terminal: basic scanned line length, scanning density, and document position. The document also includes a short history section for the edition and amendment.

SLOVENSKI STANDARD
01-december-2003
Terminalska oprema (TE) – Oprema za faksimilno skupino 4, razred 1, na
digitalnem omrežju z integriranimi storitvami (ISDN) – Preskušanje terminalov
Terminal Equipment (TE); Facsimile group 4 class 1 equipment on the Integrated
Services Digital Network (ISDN) Terminal testing
Ta slovenski standard je istoveten z: ETS 300 280/A1 Edition 1
ICS:
33.050.30 Oprema za teleks, teletekst, Equipment for telex, teletext,
telefaks telefax
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
35.180 Terminalska in druga IT Terminal and other
periferna oprema IT peripheral equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETS 300 280
AMENDMENT A1
February 1996
Source: ETSI TC-TE Reference: RE/TE-02035
ICS: 33.040.70
Group 4 facsimile
Key words:
This amendment A1 modifies
the European Telecommunication Standard ETS 300 280 (1994)
Terminal Equipment (TE);
Facsimile group 4 class 1 equipment
on the Integrated Services Digital Network (ISDN)
Terminal testing
ETSI
European Telecommunications Standards Institute
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*
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1996. All rights reserved.

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ETS 300 280: February 1994/A1: February 1996
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 280: February 1994/A1: February 1996
Foreword
This amendment to ETS 300 280 (1994) was produced by the Terminal Equipment (TE) Techni
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