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DGE will make sure that all the electronic modules in your
vehicle communicate properly. We are experts in CAN (Controlled
Area Network) and J1850 communications protocols. We can
validate your network systems at the vehicle, ECU, or
microprocessor-level.
Our vehicle-level validation suite
includes:
-
Signal
Timing & Level
Measurement
-
Operation
and Parameter Measurement During Module Offsetting
-
Arbitration
Testing
-
Resistance and Capacitance
Measurement
-
Message Traffic
Capture and Analysis
Testing can be performed under
a variety of environmental conditions. Please
view our network validation
datasheet for more information.
DGE engineers have been extensively involved in
validating communications bus systems and have been
instrumental in exposing and resolving a number of
potential issues before vehicles go into production.
Issues
Uncovered by DGE Vehicle Network
Validations:
- Signal bit
timings/voltage levels out of specification
- Signal
characteristics unacceptably affected by temperature / offset / low voltage
- Improper
fault confinement or recovery behavior
- Improper
arbitration or loss of arbitration handling
- Improper
interframe timing (negates arbitration)
- Inconsistent
behavior due to heavy bus utilization
- ECU operating
voltage out of specification
- Erratic behavior
under low or dropout voltage conditions
- ECU or network
wakeup under unexpected conditions
- Improper
module termination/network time constant
- Transient
noise / source
- Introduction
of noise to the bus by a particular ECU/tool
- Improper
handling of diagnostic queries
- Undocumented/faulty
message transmissions
- Improper
message cycle rate, length, message format
- Improper
data format in message bytes
- Multiple
ECUs transmitting same message ID
- ECU missed
message transmissions
- ECU responding to
improperly formatted messages
- ECU failure to
transmit spontaneous/status messages upon appropriate
user input
- ECU failure to
transmit required startup or reset messages
- Module
failure to wakeup with network management message
Please
contact
us for
information on any DGE product or service. |
