SIST ETS 300 132-2/C1 E1:2006

SIST ETS 300 132-2/C1 E1:2006 is the Slovenian adoption of ETSI Corrigendum ETS 300 132-2/C1 Edition 1. It amends the standard for the power supply interface at the input to telecommunications equipment operated by direct current (dc), and its technical effect is to correct the polarity shown in Figure 7.

What does SIST ETS 300 132-2/C1 E1:2006 specify?

SIST ETS 300 132-2/C1 E1:2006 specifies a correction to the dc power-supply interface drawing used in ETS 300 132-2 (1996). In practice, it tells users of the base standard to apply the revised Figure 7 in subclause 4.9.1 when setting up or interpreting the interface arrangement.

The document is organized as a short corrigendum: it identifies the standard being amended, states the amendment, and ends with document history. The technical change is confined to subclause 4.9.1, where Figure 7 is replaced with a corrected version.

What are the key requirements of SIST ETS 300 132-2/C1 E1:2006?

The corrigendum has one technical purpose: to replace Figure 7 in subclause 4.9.1 with a version that shows the correct power-supply polarity. For anyone wiring or checking the dc input interface, that matters because the polarity shown in the figure is the reference for the test or connection arrangement.

Main points in the correction

• Subclause 4.9.1 is the location of the change. Readers applying the base standard should use the amended figure there, not the earlier version.
• Figure 7 shows the interface arrangement for a dc-powered telecommunications equipment setup. The correction is in the polarity marking, which affects how the power source is connected.
• The figure includes interface "A", a dc Power Source, Telecommunications equipment, and the EUT. In practice, this is the setup the user must reproduce when checking the interface.
• The figure also shows a LISN and the impedance symbols Zm and Zc. That tells test engineers what network elements are part of the arrangement and how the impedance relationship is represented.
• The note Zm = 50 Ω and the relationship Zc << Zm appear in the figure. For users, this indicates the intended electrical condition of the setup, which is important when comparing the actual test arrangement with the standard.
• The corrected figure is intended for use with the base standard’s dc power-supply interface requirements. The practical effect is to avoid a polarity error in documentation, wiring, or test interpretation.

What terms does SIST ETS 300 132-2/C1 E1:2006 define?

Direct current (dc) means current that flows in one direction, and here it identifies the type of power interface covered by the standard.

Equipment under test (EUT) is the telecommunications equipment being connected and evaluated in the shown interface arrangement.

Line impedance stabilization network (LISN) is the network used in the figure to define the electrical conditions at the test interface.

Interface "A" is the named dc power-supply interface shown in the corrected figure.

Zm is the impedance value associated with the LISN in the figure, and it is the reference impedance used in the drawing.

Zc is the impedance associated with the capacitor-related part of the arrangement, shown as much smaller than Zm.

Who uses SIST ETS 300 132-2/C1 E1:2006?

This corrigendum is used by telecommunications equipment designers, test laboratories, and conformity or quality engineers who apply ETS 300 132-2. It matters to anyone preparing the dc input power interface, checking polarity, or setting up the Figure 7 arrangement for testing or documentation.

Buyers and quality managers may also use it when they need to verify that a supplier is using the corrected version of the interface diagram. That helps avoid confusion when reviewing technical files or test reports for dc-powered telecom equipment.

What changed in SIST ETS 300 132-2/C1 E1:2006 from the previous edition?

SIST ETS 300 132-2/C1 E1:2006 is a corrigendum to ETS 300 132-2 (September 1996) First Edition. The stated change is editorial: Figure 7 in subclause 4.9.1 is replaced to correct the polarity of the power supply.

Which standards are used with SIST ETS 300 132-2/C1 E1:2006?

The corrigendum is used together with ETS 300 132-2 (1996), the base standard for the dc power supply interface at the input to telecommunications equipment. ETS 300 132-2 provides the underlying requirements, while this corrigendum updates the figure that supports those requirements.

What does the SIST ETS 300 132-2/C1 E1:2006 document contain?

The document contains the corrigendum notice, the amended Figure 7 in subclause 4.9.1, and document history. The amended figure shows the dc power source, the telecommunications equipment/EUT, the LISN, and the impedance notation used in the interface arrangement.

For engineers and test labs, the value of the document is in the corrected wiring polarity and the preserved context of the test setup. It is a reference for applying the base standard accurately, not a full reissue of the underlying requirements.