Page 143 - TBIS_15194-2019_(EN)_3nd

TBIS 15194:2019

C.7.4 State of the ESA during the tests
Where ESA's are involved in the direct control of the EPAC and where these systems

do not operate under the conditions described in C.4.4.1 a), the testing authority
may carry out separate tests on the systems in question under conditions agreed
with the EPAC manufacturer.

C.7.5 Requisite test and condition
C.7.5.1 Test methods

ESAs shall comply with the limits (C.1.2.7.2) for one of the following test methods,
at the manufacturer’s discretion, within the range of 20 -2 000 MHz:

a) stripline test;
b) bulk current injection test;

c) TEM-cell test;

d) absorber lined Chamber, only in vertical polarization.
To avoid radiation from electromagnetic fields during tests, it is recommended to

carry them out in a shielded area.
C.7.5.2 Range of frequencies, duration of the tests, polarization

The EPAC shall be exposed to electromagnetic radiation in the 20-2 000 MHz
frequency range.

a) Measurement shall be made in the 20 to 2000 MHz frequency range with
frequency steps according to ISO 11452-1, with a dwell time of (2 ± 0,2) s for each
frequency.

b) All other test parameters are as defined in this clause.
C.7.5.3 Tests to check deterioration in direct control

C.7.5.3.1 A EPAC is deemed to fulfil the requisite immunity conditions if, during the
tests carried out in the manner required by this clause, there are no abnormal

changes in the speed of the EPAC's drive wheels, there are no signs of operational
deterioration which might mislead other road users and there are no other
noticeable phenomena which could result in a deterioration in the direct control of
the EPAC.

C.7.5.3.2 For EPAC observation purposes, only the monitoring equipment described
in C.4.6.2.2 may be used.

C.7.5.3.3 If a EPAC does not meet the requirements of the tests defined in C.4.6.2,
steps shall be taken to verify that the faults occurred under normal conditions are
not attributable to spurious fields.

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