BS EN 61935-1:2009 Specification for the testing of balanced and coaxial information technology cabling - Installed balanced cabling as specified in the standards series EN 50173
This part of EN 61935 specifies reference measurement procedures for cabling parameters and the
requirements for field tester accuracy to measure cabling parameters identified in series EN 50173. This
standard does not apply to EN 50173-4.
This International Standard applies when the cable assemblies are constructed of cables
complying with the IEC 61156 family of standards, and connecting hardware as specified in
IEC 60603-7 family of standards or IEC 61076-3-104 and IEC 61076-3-110. In the case where
cables and/or connectors do not comply with these standards, then additional tests may be
required.
This standard is organized as follows:
? reference laboratory measurement procedures on cabling topologies are specified in
Clause 4. In some cases, these procedures may be used in the field;
? descriptions and requirements for measurements in the field are specified in Clause 5;
? performance requirements for field testers and procedures to verify performance are
specified in Clause 6.
This standard relates to performance with respect to 100 Ω cabling. For 120 Ω or 150 Ω
cabling, the same principles apply but the measurement system should correspond to the
nominal impedance level.
Field tester types include certification, qualification and verification. Certification testing is
performed for the rigorous needs of commercial/industrial buildings to this standard.
Qualification testing is described in IEC 61935-3. Qualification testing determines whether the
cabling will support certain network technologies (e.g., 1000BASE-T, 100BASE-TX,
IEEE 1394b1)). Qualification testers do not have traceable accuracy to national standards and
provide confidence that specific applications will work. Verification testers only verify
connectivity.
Throughout this document, 4-pair cabling is assumed. The test procedures described in this
standard may also be used to evaluate 2-pair balanced cabling. However, 2-pair cabling links
that share the same sheath with other links are tested as 4-pair cabling.
BS EN 61935-1:2009 history
2010BS EN 61935-1:2009 Specification for the testing of balanced and coaxial information technology cabling - Installed balanced cabling as specified in the standards series EN 50173
2006BS EN 61935-1:2005 Testing of balanced communication cabling in accordance with standards series EN 50173 - Part 1: Installed cabling