Hughes Network Systems PASS-TCU Manuel D’Utilisation

 

PASS-TCU User Manual 

 

 

 

10

 

 
OTA: Over the Air 
 
Ambient Temperature: Temperature surrounding the component as tested in a test chamber or as installed 
in the vehicle. 
 
Category and subcategory:  In this document, electronic modules, electric motors and inductive devices are 
classified into categories and subcategories, which determine the appropriate test requirements. 
 
ECU: Electronic Control Unit 
 
DUT: Device Under Test 
 
Component: Any electrical or electronic assembly used in the vehicle, such as engine control module, 
instrument cluster, junction block, sensor, switch, etc. Also used interchangeably with terms such as ECU, 
Module, Device, DUT, etc. 
 
Ignition Voltage Lines:  The supply voltage lines to a DUT that are fed from the vehicle electrical power 
distribution system through the ignition switch. 
 
Inductive Device:  An electromechanical device that stores energy in a magnetic field.  Examples are 
solenoids, relays, buzzers and electromechanical horns. 
 
IOD: Ignition Off Current Draw. 
 
IP Class: International Protection classification for solid and/or water intrusion for automotive applications 
as described in DIN 40 050. 
 
RKE: Remote Keyless Entry 
 
TPM Sensor: Tire Pressure Monitor Sensor 
 
Non-operational: A component shall be considered “Non-operational”, if it is connected to a power source, 
but does not perform any normal operating functions during the test. The condition requires use of mating 
connectors during the test. This condition is similar to the one experienced by an E/E component in a parked 
vehicle. 
 
NTC: Negative Temperature Co-efficient (Device with NTC feature shuts off power supply or reduces 
certain component applications (e. g. CD-playing for a car radio) when device temperature goes below 
certain minimum operating temperature specified). 
 
Operational: A component shall be considered "Operational", if it performs functions as experienced during 
vehicle operations on a continuous basis (without any interruptions). Power source may be from vehicle 
battery, ignition feed or an independent power source, as in case of, RKE, or TPM Sensor, etc. 
 
PET: Parametric Evaluation Technique.