SIST EN 60835-2-1:2002

SIST EN 60835-2-1:2002 is a Slovenian standard published by SIST for methods of measurement on terrestrial radio-relay systems in digital microwave radio transmission systems. It specifies recommended measurement methods for assessing the essential properties of terrestrial radio-relay systems and associated sub-systems, and it is intended to be used together with IEC 835-1-1.

What does SIST EN 60835-2-1:2002 specify?

SIST EN 60835-2-1:2002 sets out measurement methods for terrestrial radio-relay systems using digital modulation. It is a supplementary part, so it does not stand alone for common measurements - it points users to Part 1 for shared methods and keeps this part focused on the terrestrial-specific aspects.

The document is organized around the front matter, Clause 1 on scope, and Clause 2 on normative references. Clause 1 explains how to use the part in practice, while Clause 2 names the companion IEC publication that supports it.

What are the key requirements of SIST EN 60835-2-1:2002?

Clause 1 states that SIST EN 60835-2-1:2002 is for terrestrial radio-relay systems that use digital modulation. In practice, this tells engineers and test labs which equipment family the methods apply to.

Clause 1 says the object of the part is to provide recommended methods for assessing the essential properties of terrestrial radio-relay systems and their associated sub-systems. That means the standard is about measurement practice, not product design, and it is aimed at showing how to check performance in a repeatable way.

Clause 1 also says the part is to be used with Part 1, IEC 835-1-1. Where a measurement is common to terrestrial radio-relay and satellite earth station systems, Part 1 is used and this part adds only the special terrestrial details. In practice, this avoids duplicating shared methods and keeps users aligned with the broader IEC measurement framework.

Clause 1 makes clear that the measurements described are neither mandatory nor limiting. A user can choose the measurements that fit the case, which matters when a project, contract, or test plan needs only part of the full set.

Clause 1 gives examples that affect how much testing is needed. For bit-rates below about 34 Mbit/s, the signature and some more sophisticated measurements may not be of interest, while more comprehensive measurements may be needed for complex modulation methods such as 64-QAM. This helps users match the test depth to the system complexity.

Clause 1 says that when a parameter or measurement method applies only to terrestrial radio-relay systems, it is described fully in this part. In practice, that tells readers where to look when the method is not shared with other system types.

Clause 2 identifies IEC 835-1-1 as the normative reference. That companion part provides the measurement methods common to terrestrial radio-relay systems and satellite earth stations, so users need it to apply this part correctly.

What terms does SIST EN 60835-2-1:2002 define?

• Digital modulation - the modulation method used by the systems covered by this standard, meaning the signal is carried in discrete states rather than a purely continuous form.
• Terrestrial radio-relay systems - land-based radio relay links that the standard measures, so the methods are aimed at fixed microwave transmission between stations.
• Associated sub-systems - the related parts of the radio-relay installation that are assessed together with the main system, so measurement work can cover the equipment chain rather than one unit only.
• Satellite earth station systems - the related system class used in Part 1 for common measurements, which matters because shared methods are handled there.
• Bit-rate - the transmission rate in bits per second, used here to indicate when some measurements may be less relevant.
• 64-QAM - a more complex modulation method mentioned as an example of a case that may need more comprehensive measurements.

Who uses SIST EN 60835-2-1:2002?

SIST EN 60835-2-1:2002 is used by engineers, test laboratories, and technical staff who measure or specify digital microwave radio transmission equipment. It is also relevant to quality managers and buyers who need to define how terrestrial radio-relay systems will be assessed.

The standard is especially useful in radio relay and fixed satellite communications work, because it ties terrestrial measurements to the shared IEC measurement structure. In practice, that helps teams choose the right test scope for development, acceptance, or verification work.

Which standards are used with SIST EN 60835-2-1:2002?

Clause 2 names IEC 835-1-1 as the normative reference. This companion part provides the measurement methods common to terrestrial radio-relay systems and satellite earth stations, while SIST EN 60835-2-1:2002 adds the terrestrial-specific parts of the measurement approach.

What does the SIST EN 60835-2-1:2002 document contain?

The document contains the front matter, a foreword, a preface, Clause 1 on scope, and Clause 2 on normative references. The foreword places the text in the IEC consensus process, and the preface identifies the IEC committee work behind it.

The scope text explains that the methods are recommended rather than mandatory and that users choose only the measurements that fit the application. It also explains when to rely on Part 1 and when this part supplies the extra terrestrial detail.

The document is therefore mainly a framework for measurement selection and cross-reference, not a long list of fixed test limits. Its value is in telling users how to apply the IEC measurement family to terrestrial radio-relay systems.