Teledyne CANbus TD References Manual

QUICK REFERENCE GUIDE

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.

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.

Connecting the CANbus TD hardware
to your LeCroy oscilloscope is easy.
Follow these simple steps:

1

Connect the USB cable to one
of the oscilloscope’s USB ports

2

Connect the other end of the
USB2.0 Cable to the CANbus TD
Tri gger Module.

3

Connect the CANbus TD
Oscilloscope Interface Module
(OIM) to the EXT input of
the oscilloscope.

4

Connect the 3-pin plug end
of the OIM to the Trigger Module.

1

First Steps

12

34

CAN Low Speed
and Single-Wire
Connection Cable

CAN High-speed
Connection Cable

Trigger Module

120 Ω
Terminations

Oscilloscope
Interface
Module (OIM)

USB 2.0 Cable

2

Connecting to a CAN Bus Circuit

The CANbus TD Trigger Module operates as a “node”
on the CAN Bus. It contains a Microcontroller, CAN
controller, and Transceiver (Trigger Coupler) and
interfaces to the CAN circuit just like any other
node on the bus. However, the Trigger Module only
provides triggering capability. In order to “view”
the actual CAN physical signal on the oscilloscope
display, you must also probe the CANH and CANL
lines with the included PP007 single-ended probes,
or a differential probe (such as the LeCroy ADP305
or AP033) and input this probe signal(s) to an
oscilloscope channel.

You w ill need to match the Trigger Coupler (Transceiver)
in the Trigger Module to the one on your bus. Trigger
Module has a 251 transceiver pre-installed. It is easy
to install a different Trigger Coupler. Reference the
CANbus TD Operator’s Manual for complete instructions.

Use a differential

probe, or two

single-ended probes,

to view the signal

on the oscilloscope

Plug into any channel

To trigger, connect your own 9-pin to 9-pin
cable to your ECU 9-pin connector,or use a

LeCroy supplied adapter cable

Trigger Module

Trigger Couplers are installed

in the Trigger Module

USB 2.0 Cable

Powers the Trigger Module

and downloads trigger setup

from the oscilloscope

Oscilloscope

Interface Module

Connect to Ext, or a channel