?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
EN 50173.?
This standard applies when the cable assemblies are constructed of cables complying with
IEC 61156 -1, IEC 61156-2, IEC 61156-3 IEC 61156-4, IEC 61156-5 or IEC 61156-6, and
connecting hardware as specified in IEC 60603-7 or IEC 61076-3-104. 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 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.
NOTE 1 This standard does not include tests that are normally performed on the cables and connectors
separately. These tests are described in IEC 61156-1 and IEC 60603-7 or IEC 61076-3-104 respectively.
NOTE 2 Wherever possible, cables and connectors used in cable assemblies, even if they are not described in
IEC 61156 or IEC 60603-7/IEC 61076-3-104 shall be tested separately according to the tests given in the relevant
generic specification. In this case, most of the environmental and mechanical tests described in this standard may
be omitted.
NOTE 3 Users of this standard are advised to consult with applications standards, equipment manufacturers and
system integrators to determine the suitability of these requirements for specific networking applications
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.
BS EN 61935-1:2005 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