EN
L 302/72
Official Journal of the European Union
22.11.2022
Table 1 Spectrum analyser parameters Frequency range MHz
30 to 1,000
Peak detector
Average detector
RBW at -3 dB
Minimum scan time
RBW at -3 dB
Minimum scan time
100/120 kHz
100 ms/MHz
100/120 kHz
100 ms/MHz
Note: If a spectrum analyser is used for peak measurements, the video bandwidth shall be at least three times the resolution bandwidth (RBW).
Table 2 Scanning receiver parameters Frequency range MHz
30 to 1,000
Peak detector
Average detector
BW at-6 dB
Step size
Minimum scan time
BW at-6 dB
Step size
Minimum scan time
120 kHz
50 kHz
5 ms
120 kHz
50 kHz
5 ms
4.4.
Measurements The Technical Service shall perform the test at the intervals specified in the CISPR 12 standard throughout the frequency range 30 to 1,000 MHz.
Alternatively, if the manufacturer provides measurement data for the whole frequency band from a test laboratory accredited to the applicable parts of ISO 17025 and recognized by the Type Approval Authority, the Technical Service may divide the frequency range in 14 frequency bands 30–34, 34–45, 45–60, 60–80, 80–100, 100–130, 130–170, 170–225, 225–300, 300–400, 400–525, 525–700, 700–850 and 850–1,000 MHz and perform tests at the 14 frequencies giving the highest emission levels within each band to confirm that the vehicle meets the requirements of this Annex.
In the event that the limit is exceeded during the test, investigations shall be made to ensure that this is due to the vehicle and not to background radiation including broadband radiation from any ESA. 4.5.
Readings The maximum of the readings relative to the limit (horizontal and vertical polarization and antenna location on the left and right-hand sides of the vehicle) in each of the 14 frequency bands shall be taken as the characteristic reading at the frequency at which the measurements were made. 4.6.
Antenna position Measurements shall be made on the left and right sides of the vehicle.
The horizontal distance is from the reference point of the antenna to the nearest part of the vehicle body.
Multiple antenna positions may be required (both for 10 m and 3 m antenna distance) depending on the vehicle length.
The same positions shall be used for both horizontal and vertical polarization measurements.
The number of antenna positions and the position of the antenna with respect to the vehicle shall be documented in the test report. — if the length of the vehicle is smaller than the 3 dB beamwidth of the antenna, only one antenna position is necessary.
The antenna shall be aligned with the middle of the total vehicle (see Figure 1)