SIST EN 60835-2-4:2002

SIST EN 60835-2-4:2002 is a Slovenian standard published by SIST. It gives methods of measurement for transmitters including modulators, and receivers including demodulators, used in digital radio-relay systems. It is intended for engineers, test laboratories, manufacturers, and others who need to measure terrestrial digital microwave radio equipment.

What does SIST EN 60835-2-4:2002 specify?

SIST EN 60835-2-4:2002 specifies measurement methods for equipment used in digital microwave radio transmission systems, with a focus on terrestrial radio-relay systems. In practical terms, it is a test-method document for the transmitter and receiver sections of that equipment, including the modulator/demodulator part.

The standard is the Part 2, Section 4 document in the series, so it sits within a larger family of measurement standards for digital microwave radio transmission systems. The scope note also points users to EN 60835-2-8 for adaptive equalizer measurements, so this document should be read as part of a broader measurement set for radio-relay equipment.

What are the key requirements of SIST EN 60835-2-4:2002?

SIST EN 60835-2-4:2002 is centered on how to measure the transmitter and receiver functions of digital radio-relay equipment. The main value of the document is consistency: it tells users what to measure on the terminal equipment so results can be compared in a repeatable way.

• Measure transmitter and receiver functions as defined for digital radio-relay systems.
  The standard applies to transmitters including modulators and receivers including demodulators. In practice, this means the equipment is assessed as a communication chain, not only as isolated RF blocks.

• Use the methods for terrestrial radio-relay systems.
  The scope is limited to terrestrial radio-relay systems used in digital microwave radio transmission systems. In practice, this anchors the measurement approach to fixed land-based relay links rather than other transmission environments.

• Treat the modulator/demodulator as part of the equipment under test.
  The title explicitly includes the modulator/demodulator, so the measurements are not limited to the radio frequency stage alone. For users, that means the test setup must cover the functions that prepare and recover the digital signal.

• Follow the standard as a measurement-method document, not as a design specification.
  The document is about how to measure equipment, so it supports verification, type testing, acceptance testing, and laboratory work. In practice, it helps users set up tests and interpret measured performance in a consistent way.

• Use EN 60835-2-8 for adaptive equalizer measurements.
  The scope directs adaptive equalizer measurements to EN 60835-2-8. If the equipment includes adaptive equalizer functions, users need that companion part to complete the measurement work.

• Work within the digital microwave radio transmission system context.
  The standard belongs to the measurement series for digital microwave radio transmission systems. In practice, it supports teams that evaluate equipment intended for high-frequency digital relay links.

What terms does SIST EN 60835-2-4:2002 define?

SIST EN 60835-2-4:2002 uses the key equipment terms in its title and scope to describe the part of the radio system being measured.

• Transmitter - the part of the radio-relay equipment that sends the digital signal.
• Receiver - the part of the radio-relay equipment that receives the digital signal.
• Modulator - the section that prepares the signal for transmission.
• Demodulator - the section that recovers the signal at the receiving side.
• Transmitter/receiver - the combined equipment arrangement covered by the measurement methods.
• Digital radio-relay systems - digital systems that relay radio signals between stations.
• Terrestrial radio-relay systems - land-based radio-relay systems used for fixed links.
• Adaptive equalizers - functions whose measurements are handled in EN 60835-2-8.

Who uses SIST EN 60835-2-4:2002?

SIST EN 60835-2-4:2002 is used by people who measure, verify, or specify digital microwave radio-relay equipment. Typical users include test engineers, laboratory staff, equipment manufacturers, and quality or acceptance teams working on terrestrial radio links.

For engineers and laboratories, the document gives a common measurement reference for transmitter and receiver checks. For manufacturers and buyers, it helps when equipment needs to be assessed against a shared test method during development, qualification, or procurement.

What changed in SIST EN 60835-2-4:2002 from the previous edition?

SIST EN 60835-2-4:2002 is identical to EN 60835-2-4:1995.

Which standards are used with SIST EN 60835-2-4:2002?

EN 60835-2-8 is the companion part named in the scope. It provides the measurement methods for adaptive equalizers, which are outside the scope covered here but belong to the same measurement family.

What does the SIST EN 60835-2-4:2002 document contain?

SIST EN 60835-2-4:2002 contains measurement methods for transmitter and receiver equipment used in digital microwave radio transmission systems. It is a methods document, so it supports test planning and laboratory measurement rather than product description.

Its content is focused on the equipment functions named in the title: transmitter, receiver, modulator, and demodulator. The scope also makes clear that adaptive equalizer measurements are handled separately in EN 60835-2-8, which helps users choose the right standard for the function they are testing.

For a reader working in practice, the document is useful when setting up measurement work for terrestrial digital radio-relay systems. For an AI assistant or search engine, the key point is that this standard defines measurement methods for transmitter/receiver equipment in digital microwave radio transmission systems, with modulator/demodulator included.