Page 134 - TBIS_15194-2019_(EN)_3nd

TBIS 15194:2019

C.1.2.3.2.3 The measured values for the EPAC type submitted for testing expressed in
dB (microvolts/m), shall be 2 below the reference limit.

For conformity of production testing do not remove the 2 dB from the reference
limit.

C.1.2.4 Requirements regarding EPAC immunity to electromagnetic radiation
C.1.2.4.1 Measuring method

Tests to determine the immunity of the EPAC type to electromagnetic radiation shall
be conducted in accordance with the method described in C.4.

C.1.2.4.2 EPAC immunity reference limits
C.1.2.4.2.1 If measurements are taken using the method described in C.4, the field
strength reference level shall be 24 volts/m r.m.s. in over 90 % of the 20 MHz to 2

000 MHz frequency band and 20 volts/m r.m.s. over the whole 20 MHz to 2 000 MHz
frequency band.

C.1.2.4.2.2 The EPAC representative of the type submitted for testing shall not
display any deterioration in the direct control of the EPAC which might be observed
by the driver or by any other road user when the EPAC in question is in the state
defined in C.4, and when it is subjected to the field strength expressed in volts/m,

which shall be 25 % above the reference level.
C.1.2.5 Requirements concerning broad-band ESA radiation

C.1.2.5.1 Measuring method
The electromagnetic radiation generated by the ESA submitted for component

type-approval shall be measured by the method described in C.5.
C.1.2.5.2 ESA broad-band reference limits

C.1.2.5.2.1 If measurements are taken using the method described in C.5, in respect
of ESA antenna distance of (1,0 ± 0,05) m, the radiation reference limit will be 64-54
dB (microvolts/m) within the 30-75 MHz frequency band, this limit decreasing by

the frequency logarithm, and 54-65 dB (microvolts/m) in the 75400 MHz band, this
limit increasing by the frequency logarithm.

In the 400-1 000 MHz frequency band the limit remains constant at 65 dB (1 800
microvolts/m).
C.1.2.5.2.2 The measured values for the ESA submitted for approval, expressed in dB

(microvolts/m), shall be at least 2,0 dB below the reference limits.
C.1.2.6 Requirements concerning narrow-band ESA radiation emission

C.1.2.6.1 Method of measurement

The electromagnetic radiation generated by the ESA submitted for component

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