Bosch FR5CPCCF Manual page 14

Table of Contents

CC-DA/ESR1

Classification of reflection caused by the fascia

Reflection coefficient <-15 dB

is achieved when fascia has optimized thickness within a tolerance of ±0.1 mm and permittivity

within a tolerance of ±0.02. Dielectric loss factor tanδ shall be <0.01. With such low reflection a

vertical tilt angle of 0° is possible. This is the case for unpainted or a single e.g. black paint cover.

Also well designed emblems without air gap inside may be usable.

Reflection coefficient <-10 dB

is achieved when fascia has optimized thickness within a tolerance of ±0.2 mm and permittivity

within a tolerance ±0.02. Dielectric loss factor tanδ shall be <0.03. With such reflection a vertical tilt

angle of 0° must be avoided.

Reflection coefficient <-6 dB

is achieved when fascia has optimized thickness within a tolerance of ±0.2 mm and permittivity

within a tolerance of ±0.2. Dielectric loss factor tanδ shall be <0.05. With such reflection a vertical

tilt angle of >18° is required. This is the case for painted bumper especially when various colors are

used.

Reflection coefficient >-6 dB

is achieved when fascia has no optimized thickness or a painting with high metallic content is used.

The attenuation will exceed the maximum allowed limit.

The examples described in the classification of reflection are derived from evaluation of flat

plates with constant thickness and homogeneous material. Deviations from this situation may

cause a change in classification and the vertical tilt angle of fascia has to be increased.

Surface Properties of the fascia

The surfaces of the fascia shall not exceed an average roughness height of 20 µm

(corresponding to ISO 1302 class N10; VDI 3400 class 45).

and passing on rights, with us. The valid issue of this template is filed in CC-DA process landscape.

Installation and Manual Documentation

FR5CPCCF

Document date:

08 Aug 2019

Page:

Table of Contents