Installation Hints - Bosch CR5CBCC User Manual

From
XC-DA/ECR3-Bp
Report
Issue 1.0
Topic CR5CBCC User Manual
Classification of the fascia
Fascia type Material characteristic
1. Unpainted Optimized thickness within a tolerance ±0.2
bumper mm and permittivity within a tolerance ±0.05.
Dielectric loss factor tanδ shall be <0.03.
2. Painted Range of the permittivity
bumper values between 2.5 and 3.2.
with
various
colors
The examples described in the classification of the fascia are derived from evaluation of flat
plates with constant thickness and homogeneous material. Deviations from this situation may
cause a change in classification.
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).
6.3

Installation Hints

To enable the full performance of the radar sensor, the following installation hints and
guidelines for the RF integration of the sensor must be used.
Maximum angle between radar cone and fascia
The angle α between the radar beam inside the radar cone and the fascia may not be larger
than 80° anywhere inside the radar cone
Our Reference
Daniel Radics
Tel
+36 1 879-6276
Reflection and attenuation
- Reflection coefficient <-10 dB
- 2-way attenuation <4 dB.
Dielectric loss - Reflection coefficient <-6 dB
factor tanδ
- 2-way attenuation <4 dB.
<0.02
Dielectric loss - Reflection coefficient >-6 dB
factor tanδ
- The attenuation may exceed the maximum
>0.02 allowed limit.
CR5CBCC_User_manual.docx
Budapest
10 June 2021
Page 12 of 17