Document ID: chunk:federal_register_of_legislation:F2022C01070:body:0:p12
Version: federal_register_of_legislation:F2022C01070
Segment Type: other
Provision Reference: 
Character Range: 32863–35700

system.
6.11. Specifications for optional functions
6.11.1. Self check, automatic failure indication
 On setting the VAS, irregular situations, e.g. open doors, etc., can be detected by a self-check function (plausibility control), and this situation is indicated.
6.11.2. Panic alarm
 An optical and/or audible and/or radio alarm is allowed independent of the state (set or unset) and/or function of the VAS.  Such an alarm shall be triggered from within the vehicle and shall not affect the state (set or unset) of the VAS.  Also it must be possible for the vehicle user to switch off the panic alarm.  In the case of an audible alarm, its sounding duration per activation shall not be restricted.  A panic alarm shall not immobilise the engine or stop it if it is running.
7. OPERATION PARAMETERS AND TEST CONDITIONS [5]/
7.1. Operation parameters
 All components of the VAS shall operate without any failure under the following conditions.
7.1.1. Climatic conditions
 Two classes of environmental temperature are defined as follows :
 -40° C to +85° C for parts to be fitted in the passenger or luggage compartment;
 -40° C to +125° C for parts to be fitted in the engine compartment unless oth-erwise specified.
7.1.2. Degree of protection for installation
 The following degrees of protection in accordance with IEC Publication 529-1989 shall be provided:
 IP 40 for parts to be fitted in the passenger compartment;
 IP 42 for parts to be fitted in the passenger compartment of roadsters/convertibles and cars with moveable roof-panels if the installation location requires a higher degree of protection than IP 40;
 IP 54 for all other parts.
 The VAS manufacturer shall specify in the installation instructions any restric-tions on the positioning of any part of the installation with respect to dust, water and temperature.
7.1.3. Weatherability
 7 days according to IEC 68-2-30-1980.
7.1.4. Electrical conditions
 Rated supply voltage : 12 V
 Operation supply voltage range : from 9 V to 15 V in the temperature range according to paragraph 7.1.1.
Time allowance for excess voltages at 23C: U = 18 V, max. 1 h
             U = 24 V, max. 1 min.
7.2. Test conditions
7.2.1. Operation tests
7.2.1.1. Compliance of the VAS with the following specifications shall be checked :
 Alarm duration according to paragraphs 6.2.2. and 6.3.2.;
 Frequency and on/off ratio according to paragraphs 6.3.3. and 6.2.3.1. or 6.2.3.2. respec­tively;
 Number of alarm cycles according to paragraph 6.1.1., if applicable;
 Alarm system setting lock check according to paragraph 6.5.
7.2.1.2. Normal test conditions
 Voltage   U = (12 ± 0.2) V
Temperature    = (23 ± 5)C
7.2.2. Resistance to temperature and voltage changes
Compliance with the specifications defined under paragraph 7.2.1.1. shall also be checked under the following conditions :