CANbus TD CAN Bus Trigger and Decoding Package In order to get started quickly, take a few moments to read through this guide. Information on basic oscilloscope operation can be found in the oscilloscope on-line Help. When you have more time, read the CANbus TD Operator’s Manual. That contains more detailed information about the full capability of CANbus TD.
First Steps 120 Ω Terminations Trigger Module CANbus TD is a Trigger and Decoding tool that will greatly increase your ability to debug and analyze embedded controllers that use CAN Bus communications, or entire systems consisting of multiple CAN controllers. The names of the hardware components in CANbus TD are listed at the right. Oscilloscope Interface Module (OIM) CAN Low Speed and Single-Wire Connection Cable CAN High-speed Connection Cable USB 2.
Connecting to a CAN Bus Circuit Plug into any channel Oscilloscope Interface Module Connect to Ext, or a channel Use a differential probe, or two single-ended probes, to view the signal on the oscilloscope To trigger, connect your own 9-pin to 9-pin cable to your ECU 9-pin connector, or use a LeCroy supplied adapter cable USB 2.
Connecting to a CAN Bus Circuit Pin # 2 Transceiver/ Trigger Coupler 251 1041 1050 1054 CANL CANL CANL CANL 3 GND 4 5790c 10011S CANL VB- VB- 100 Ω (HS Mode) 7 CANH CANH CANH Notes Connect 120 Ω between pins 2 + 7 Connect 120 Ω between pins 2 + 7 Connect 120 Ω between pins 2 + 7 CANH CAN CANH All of the normal connection rules apply when connecting the CANbus TD Trigger Module to your bus. The bus must be terminated correctly,and CANH,CANL,GND, etc.
Using CANbus TD CAN Trigger CAN Analysis, CAN Trace, CAN Zoom Overview CAN Analysis, CAN Trace, CAN Zoom CANbus TD trigger and decoding tools are easily accessible in a variety of ways. The CANbus TD option adds an additional dialog for CAN triggering to the existing oscilloscope Trigger dialog, and a new set of dialogs for setup of the CAN Analysis and viewable CAN Trace and CAN Zoom.
Useful Features Error Frame Highlight and Zooming When capturing long records with hundreds or thousands of CAN messages, only error frame messages are decoded on the compacted display. Error Frames are outlined in red, and easy to find. To see more detail, use the (magenta-colored) CAN Zoom trace. Zoom Controls Zooming is easy with LeCroy’s front panel zoom controls.
Helpful Hints Characterize System Performance You can use many different built-in oscilloscope tools, such as cursors, measurement parameters, statistics and histicons to understand performance of your embedded controller board. Depending on other options installed in your oscilloscope, you may also be able to Histogram and Trend measurement parameters. Reference your Operator’s Manual for more detailed information.
Sales and Service Throughout the World CANbus TD Overview 6 4 7 Corporate Headquarters 700 Chestnut Ridge Road Chestnut Ridge, NY 10977 USA www.lecroy.com 9 LeCroy Sales Offices: This is the CAN Trace capture China: Beijing Phone (86) 10 8526 1618 Fax (86) 10 8526 1619 France: Les Ulis Phone (33) 1 6918 8320 Fax (33) 1 6907 4042 This is an analog signal that is time-correlated with the CAN Trace.
