Teledyne LeCroy

Teledyne LeCroy Automotive Solutions

Control Busses
Automotive control busses enable communication between ECUs, sensors, actuators, etc. using well defined protocols. These protocols are deployed using electrical, optical, or wireless signaling. As the amount of data being transferred in-vehicle is rapidly increasing, control busses are evolving to meet the new demands.

Today’s vehicles utilize an array of different protocols for in-vehicle communication.
CAN – in-vehicle networks controlling window/seat operation, engine management, brake control, etc.
CAN FD – extends the bit rate of CAN via a flexible data rate
LIN – communication between components in vehicles, provides a cheaper alternative to CAN
FlexRay – utilizes two independent data channels for mission critical data transmission
SENT – point-to-point scheme for communication with sensors
MOST – electrically or optically based ring topology to transport data for infotainment
Automotive Ethernet – provides Ethernet connectivity in vehicles; used for infotainment, ADAS and can serve as Ethernet backbone

Common Control Bus Issues:

  • Serial bus protocol errors (ie: error frames or CRC errors)
  • Reflections caused from improper termination
  • Slow rise times causing timing errors in cause-effect relationships
  • Physical layer abnormalities – runts, glitches, etc.


  • Digital data extraction and graphing of CAN wheel speed information
  • Detect a rogue message on a bus that is outside a list of specified message IDs
  • Isolate signal integrity issues coming from a specific node on the bus
  • Automated compliance testing of PHYs for Automotive Ethernet, USB, MOST, etc.
  • Margin testing of different cable lengths and network topologies using eye diagrams and mask testing


  • Oscilloscopes
  • Mixed Signal Testing
  • Serial Data Decode
  • Signal Generators
  • Protocol Analyzers

Automotive Solutions

Contact Information

Teledyne LeCroy

700 Chestnut Ridge Rd
Chestnut Ridge, NY, 10977

toll-free: 800-909-7211

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