Tektronix TDSVNM CAN,LIN Online Help Online Help
Online Help
TDSVNM CAN and LIN Timing and Protocol
Decode Software
077-0017-00
www.tektronix.com
Copyright
Copyright © Tektronix, Inc. All rights reserved. Licensed software products
are owned by Tektronix or its suppliers and are protected by United States
copyright laws and international treaty provisions.
Tektronix products are covered by U.S. and foreign patents, issued and
pending. Information in this publication supercedes that in all previously
published material. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
TDSVNM CAN and LIN Timing and Protocol Decode Software Online Help
Version 3.0.0, 076-0048-00.
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Drive or P.O. Box 500
Beaverton, OR 97077 USA
For product information, sales, service, and technical support:
In North America, call 1-800-833-9200.
Worldwide, visit www.tektronix.com to find contacts in your area.
Table of Contents
Copyright ......................................................................................................................................... 1
Contacting Tektronix ............................................................................................................... 1
Table of Contents.............................................................................................................................. i
General Safety Summary ................................................................................................................. v
Introduction...................................................................................................................................... 1
About TDSVNM CAN and LIN Timing and Protocol Decode Software ............................... 1
Using Online Help ................................................................................................................... 2
Application Description ........................................................................................................... 2
Applications................................................................................................................... 2
Features.......................................................................................................................... 3
Easy System Integration ................................................................................................ 3
Network Management ................................................................................................... 4
Monitoring Multiple Protocols ...................................................................................... 5
Protocol Decoding ......................................................................................................... 5
About the ATM-1 Automotive Trigger Module ...................................................................... 6
Application Environment .............................................................................................. 6
Trigger Module Connections......................................................................................... 6
Buses and Bus Connections........................................................................................... 7
Printing from the Online Help ................................................................................................. 8
Conventions ............................................................................................................................. 8
Updates from the Web Site ...................................................................................................... 8
Feedback ............................................................................................................................... 9
Getting Started ............................................................................................................................... 11
Compatibility ......................................................................................................................... 11
Recommended Accessories.................................................................................................... 11
Starting the Application ......................................................................................................... 11
Requirements and Restrictions............................................................................................... 12
Maximizing and Minimizing the Application........................................................................ 12
Returning to the Application.................................................................................................. 13
Exiting the Application .......................................................................................................... 13
Application Directories and Usage ........................................................................................ 13
Operating Basics ............................................................................................................................ 15
Protocol Decoding and Timing Analysis Tests...................................................................... 15
TDSVNM Application View ................................................................................................. 16
Menus ............................................................................................................................. 16
File Menu..................................................................................................................... 16
Tests Menu .................................................................................................................. 17
Results Menu ............................................................................................................... 17
TDSVNM Timing and Protocol Decode Software i
Table of Contents
Utilities Menu.............................................................................................................. 18
Help Menu ................................................................................................................... 18
Selection Panel....................................................................................................................... 18
Control Panel ......................................................................................................................... 19
Status Bar ............................................................................................................................. 20
Setting Preferences................................................................................................................. 20
Virtual Keyboard.................................................................................................................... 21
How to ........................................................................................................................................... 25
Select ............................................................................................................................. 25
Protocol and Timing Analysis Tests............................................................................ 25
Configure ............................................................................................................................. 26
Configure Protocol ...................................................................................................... 26
Configure CAN Protocol ............................................................................................. 28
Configure LIN Protocol............................................................................................... 30
Configure CAN and LIN Protocol............................................................................... 32
Timing Analysis Tests................................................................................................. 34
Configure Oscillator Tolerance ................................................................................... 36
Configure Eye Diagram............................................................................................... 37
Configure Bus Traffic.................................................................................................. 39
Configure Data Rate .................................................................................................... 40
Configure Wakeup Time ............................................................................................. 41
Configure Propagation Delay ...................................................................................... 42
Set up Trigger ........................................................................................................................ 43
Set up Trigger .............................................................................................................. 43
Trigger CAN and CAN/LIN Protocol ......................................................................... 47
Trigger LIN Protocol ................................................................................................... 49
Trigger for Oscillator Tolerance, Eye Diagram, and Data Rate .................................. 49
Trigger Bus Traffic...................................................................................................... 51
Trigger Wakeup Time ................................................................................................. 53
Trigger Propagation Delay .......................................................................................... 54
Define Elementary Trigger Events .............................................................................. 54
Define Logical Trigger Events .................................................................................... 58
Define Advanced Trigger Events ................................................................................ 61
Connect ............................................................................................................................. 65
Connections for Protocol and Timing Tests ................................................................ 65
Connections for CAN Dual Wire ................................................................................ 66
Connections for CAN and LIN Protocols.................................................................... 75
View Results .......................................................................................................................... 76
Results Window........................................................................................................... 76
Protocol Analysis Window.......................................................................................... 77
Results for CAN Protocol............................................................................................ 85
Results for LIN Protocol.............................................................................................. 87
ii TDSVNM Timing and Protocol Decode Software
Table of Contents
Results for CAN and LIN Protocols............................................................................ 88
Results for Eye Diagram.............................................................................................. 89
Eye Diagram Plot......................................................................................................... 91
Results for Oscillator Tolerance .................................................................................. 92
Results for Data Rate................................................................................................... 93
Results > Details.......................................................................................................... 93
Results for Bus Traffic ................................................................................................ 94
Results for Wakeup Time ............................................................................................ 95
Results for Propagation Delay..................................................................................... 96
Install ATM-1 License ...........................................................................................................97
ATM-1 License Installation......................................................................................... 97
References...................................................................................................................................... 99
Shortcut Keys......................................................................................................................... 99
Error Messages..................................................................................................................... 100
Default Settings Part I .......................................................................................................... 103
Default Settings Part II......................................................................................................... 106
Measurement Algorithms..................................................................................................... 108
CAN Protocol ............................................................................................................ 108
LIN Protocol.............................................................................................................. 109
Oscillator Tolerance .................................................................................................. 110
Eye Diagram.............................................................................................................. 111
Data Rate ................................................................................................................... 111
Bus Traffic................................................................................................................. 112
Wakeup Time ............................................................................................................ 113
Propagation Delay ..................................................................................................... 113
Index ........................................................................................................................................ 115
TDSVNM Timing and Protocol Decode Software iii
Table of Contents
iv TDSVNM Timing and Protocol Decode Software
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage
to the measurement instrument or any products connected to it. To avoid
potential hazards, use the software and measurement instrument only as
specified.
While using this software, you may need to access other parts of the system.
Read the General Safety Summary and specification sections in other
equipment manuals for warnings, cautions, and ratings related to operating
the system with this software.
To avoid Fire and Personal Injury
Connect and Disconnect Properly. Connect the probe output to the
measurement instrument before connecting the probe to the circuit under test.
Disconnect the probe input and the probe ground from the circuit under test
before disconnecting the probe from the measurement instrument.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all
ratings and markings on the measurement instrument and other equipment
used with this software. Consult the individual product manuals for further
ratings information before making connections to the circuit under test.
Do Not Operate With Suspected Failures. If you suspect there is damage to
the measurement instrument or other equipment being used with this
software, have it inspected by qualified service personnel.
Terms in this Manual
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could
result in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could
result in damage to the measurement instrument or other property.
TDSVNM Timing and Protocol Decode Software v
General Safety Summary
vi TDSVNM Timing and Protocol Decode Software
Introduction
About TDSVNM CAN and LIN Timing and Protocol
Decode Software
The TDSVNM CAN and LIN Timing and Protocol Decode Software is a low
speed serial bus test software program for CAN and LIN buses that run on
Tektronix oscilloscopes. The software helps to decode CAN and LIN
protocol messages simultaneously, set trigger conditions based on the CAN
bus message, capture data for specific conditions of the in-vehicle network,
decode and display the captured CAN and LIN messages, and analyze the
displayed frames. TDSVNM offers timing analysis tests that help
characterize CAN node performance.
The TDSVNM CAN and LIN Timing and Protocol Decode Software offers
the following:
Protocol Decoding
CAN bus
LIN bus
CAN & LIN buses
CAN Timing Tests
Eye Diagram
Oscillator Tolerance
Data Rate
Bus Traffic
Wakeup Time
Propagation Delay
TDSVNM Timing and Protocol Decode Software 1
Introduction
Using Online Help
The TDSVNM CAN and LIN Timing and Protocol Decode Software online
help serves as a reference for using the TDSVNM CAN and LIN Timing and
Protocol Decode Software.
Contents: The Contents tab displays books and pages that represent the
categories of information in the online Help system.
Index: The Index tab displays a multi-level list of keywords and keyword
phrases. These terms are associated with topics in the Help system and direct
you to specific topics.
Search: The Search tab enables you to search for keywords in the Help
system and to locate topics containing those words. When the search is
completed, a list of topics is displayed so you can select a specific topic to
view.
Back and Forward: The Back and Forward buttons allow you to browse
through topics.
To print a topic: Select the Print button from the Help Topics menu bar.
Application Description
Applications
Some typical applications while developing, integrating, operating, and
updating the CAN and LIN network are as follows:
Easy System Integration: Adding new features to existing in-vehicle
networks often results in adding new CAN nodes (devices). While integrating
a new CAN node, there is a need to ensure that the CAN node is
synchronized for seamless network operation. The oscillator tolerance and
propagation delay measurements help to locate any network synchronization
problems.
CAN/LIN network management: An in-vehicle network in a car enables
communication between auto body parts such as doors, seats, dashboard,
airbag, and engine parts such as the engine, steering, and gear box. A tool that
helps to monitor the communications between different segments of the
vehicle network is needed.
Protocol Decoding: The performance of an existing in-vehicle network is
improved by enhancing the software in upper layers of the OSI model. This
involves updating the existing vehicle firmware and testing its performance.
Monitor multiple protocols: An in-vehicle network is heterogeneous. Based
on the cost and performance of a node, automotive manufacturers use
different networks and integrate them using gateways.
2 TDSVNM Timing and Protocol Decode Software
Introduction
Features
TDSVNM CAN and LIN Timing and Protocol Decode Software offers the
following features and benefits:
Oscillator Tolerance and Propagation Delay measurements help in
addressing network synchronization issues
Simultaneous protocol decoding of CAN and LIN messages helps in
ensuring communication accuracy and acceptable latency between the
two segments of the network
Ability to link decoded and time-stamped CAN messages to its timing
waveform to clearly visualize bus functions
Integrated search functions help to efficiently debug network problems
in the data link layer
CAN Eye diagram analysis quickly locates noise in the CAN message
caused by jitter, amplitude aberration, spikes and glitches
Bus Traffic measurement helps in optimizing network performance and
bus utilization for different CAN message frames
Support for various CAN configurations: CAN single wire, CAN Dual
wire, CAN fault tolerant makes TDSVNM useful for a wide range of
CAN signaling types
Speedy network debug by setting trigger conditions based on CAN
message content such as ID, DATA and DLC
Setting trigger conditions to detect overload, passive error, active error
and remote frames helps to quickly identify CAN network
communication errors
Powerful conditional triggers such as if-then-else enable users to
monitor the CAN network and efficiently capture intermittent or
occasional events
Characterize long duration network timing performance by triggering on
the nth occurrence of a specific CAN message or triggering only after a
user specified time has elapsed
Ability to generate ACK Bit removes the need for a receiving CAN node
while testing a single CAN node
Capability to use the DPO-CAN Bus Trigger feature
Easy System Integration
CAN and LIN nodes are connected to form an in-vehicle network. CAN is a
serial, asynchronous, and multi-master communication network. The data is
transmitted from one CAN node to another CAN node with overhead and
payload. The receiving node samples the incoming data using the internal
TDSVNM Timing and Protocol Decode Software 3
Introduction
clock. The oscillator, which resides in each CAN node, generates the internal
clock. The sample point is programmed at an appropriate bit interval such
that data from a distant node is interpreted accurately. The sample point can
be programmed anywhere between 20% and 90% of the bit time. The sample
point position depends on the following:
Oscillator tolerance of the receiving CAN node
Propagation delay from the transmitting node to the receiving node
If the sample point is set at 50% of the bit time, you may be limited to using
short cables for the network. If the sample point is set at 80% of the bit time,
you may be able to use longer cables. This requires a very high tolerance
oscillator, which generates the sampling clock. A low tolerance oscillator
may cause sampling beyond the bit time and wrong interpretation of the data
by the CAN node.
It is apparent that a low tolerance oscillator is not compatible with long cable
length. Oscillator tolerance also varies with the operating temperature and
age of the CAN network.
New nodes are added to the existing network to add more features to the
vehicle. During system integration, you need a tool that allows you to
synchronize the new CAN node by setting an appropriate sample point
location in the bit time, based on the oscillator tolerance of the CAN nodes
and propagation delay of the network.
TDSVNM is a tool that helps in characterizing the oscillator tolerance and
propagation delay of the CAN network. TDSVNM helps to easily integrate
an in-vehicle network and add new CAN nodes to the existing network.
Network Management
CAN and LIN network enables the communication between doors, seats,
dashboard, airbag, and engine parts. The communication needs to be efficient
and timely between the CAN and LIN nodes. To measure the effectiveness of
the communication, you need to capture the physical layer activity using an
oscilloscope. This data will be in the YT format, which is difficult to
interpret. Analyzing a YT waveform is time consuming and prone to errors.
You might want to view the YT data in hexadecimal, binary, or decimal
format.
Each CAN node expects to communicate in a timely manner. This
requirement becomes critical for the safety bus, since it controls the airbag
and ABS. To characterize this part of the communication, you need a tool
that allows you to measure the time difference between the communication of
the node that provides input and the nodes that respond to the input.
An in-vehicle network manages combustion, emission, safety and comfort
needs of the vehicle by continuous communication. For reliable operation of
the CAN and LIN, network traffic needs to be monitored for a long time.
4 TDSVNM Timing and Protocol Decode Software
Introduction
Monitoring Multiple Protocols
An in-vehicle network is heterogeneous. Based on performance requirements
and the cost of a node, automotive manufacturers use different networks and
integrate those using gateways. Two dominant networks are CAN and LIN.
In a CAN network, different data speeds are used based on the application of
that segment of the network. In many cases there could be communication
across the two-segment networks through a gateway. You need to ensure that
communication across the gateway is accurate and timely. To characterize
this, you need tools that would provide simultaneous decoding of the data for
each segment of the network.
A typical example for a CAN-LIN network is as shown in Figure 1-1:
Figure 1-1: Example of a CAN-LIN network
In this application, design engineers and system integration engineers would
need to monitor the LIN and CAN protocol across the gateway. In the
picture, the gateway is an ECU that converts LIN to CAN protocol and vice
versa. Engineers need to monitor the delays in the two-way communication
between the CAN and LIN network. This is because each of the segments of
the network operates at different speeds. The delay between the CAN and
LIN gateway would affect the movement of the gears that control the
headlight position.
Protocol Decoding
The performance of an automotive, medical electronics or industrial
automation network is improved by enhancing the software in upper layers of
the OSI model. This involves updating the existing vehicle firmware and
testing its performance. During firmware update, you need to monitor the
physical layer activity of the CAN in hexadecimal, binary or decimal format,
and then optimize the performance of the network.
TDSVNM Timing and Protocol Decode Software 5
Introduction
About the ATM-1 Automotive Trigger Module
The ATM-1 Automotive Trigger Module monitors the CAN bus protocol and
provides an output signal to trigger a Tektronix oscilloscope when a userspecified bus condition occurs.
The ATM-1 automotive trigger module is manufactured by Crescent Heart
Software (CHS). Refer to www.c-h-s.com for contact information.
The ATM-1 monitors the behavior of the bus to which it is connected, and
can also send signals to the bus in specific situations (for example, to
optionally signal an acknowledge on the CAN bus).
The ATM-1 functions as an addition to an oscilloscope, enabling the
oscilloscope to be triggered when a complex signaling situation occurs on the
bus. The ATM-1 can track and produce a trigger signal as a result of
signaling conditions that are too complex for the oscilloscope to trigger on.
Such complex signaling conditions occur as a result of the multiple levels of
signaling protocol implemented on the CAN bus.
The ATM-1 is packaged in an aluminum metal case with front and rear-panel
signal input and output connectors.
Application Environment
An oscilloscope uses standard probes to monitor the electrical activity of the
bus signal(s). For single wire buses, the signal voltage is determined relative
to the system ground. For dual wire buses, which use differential signaling,
the differential voltage is determined using either a differential probe or two
conventional (non differential) probes with the algebraic voltage difference
mathematically computed by the oscilloscope.
The ATM-1 also connects to the bus signal(s), allowing the module to
monitor the logical behavior of the bus.
Trigger Module Connections
A D-SUB 25-pin male connector on the front panel of the ATM-1 accepts the
bus signals to be monitored. Connecting the bus signals to the ATM-1
requires wiring the 25-pin female mating connector provided with the unit, or
using the optional companion cable assembly.
The ATM-1 produces a TTL-compatible 50-Ω back-terminated trigger output
through a BNC connector on the rear panel of the unit; use the standard 50-Ω
BNC cable provided with the ATM-1 to connect the ATM-1 trigger output to
a trigger input on the oscilloscope. The trigger state machine of the ATM-1
creates an output signal on the trigger output according to user-specified
trigger events.
6 TDSVNM Timing and Protocol Decode Software
Introduction
The ATM-1 can be connected to the oscilloscope using the USB port on the
rear panel of the unit. Through this connection, the application software
running on the oscilloscope can set up trigger conditions, control, and
monitor the trigger module.
The bicolor (yellow/green) LED on the ATM-1 front panel indicates the
presence of power, the status of the USB connection, and certain error
conditions.
Buses and Bus Connections
The current version of the ATM-1 firmware supports following versions of
CAN bus:
CANH, CANL: High- or medium-speed CAN bus differential signals,
In/Out
FTCANH, FTCANL: Fault-tolerant low-speed CAN bus differential
signals, In/Out
SWCAN: Single-wire CAN bus signal, In/Out
TDSVNM Timing and Protocol Decode Software 7
Introduction
Printing from the Online Help
While using the online help, you can print topics and information from the
HTML Help viewer.
To print a single topic:
1. Find the topic in the Contents pane.
2. Click Print.
3. Click Print the selected topic and click OK.
To print all topics in a selected TOC book:
4. Find the TOC book in the Contents pane.
5. Click Print.
6. Click Print the selected heading and all subtopics and click OK.
Some online help topics have color in the examples of the displayed
application. If you want to print this type of topic on a monochrome printer,
some colors may not print. To avoid this problem, print the topic from the
PDF file that corresponds to the online help. You can find this file in the
Documents directory on the Optional Applications Software on WindowsBased Oscilloscopes CD-ROM. The application menus in the PDF file are
gray scale and all the information can be printed.
Conventions
Online help uses the following conventions:
When steps require a sequence of selections using the application
interface, the ">" delimiter marks each transition between a menu and an
option. For example, File > Minimize.
DUT refers to the transmitter of the signal to be tested.
Updates from the Web Site
You can find information about this and other applications at the Tektronix
Inc. Web site, www.tektronix.com. Check this site for firmware updates and
other information about our application.
8 TDSVNM Timing and Protocol Decode Software
Feedback
Introduction
Tektronix values your feedback on our products. To help us serve you better,
please send us your suggestions, ideas, or comments on the application.
Direct your feedback using email to techsupport@tektronix.com or tdsvnmfeedback@tek.com. You can also send feedback by FAX to (503) 627-5695.
Please include the following information and be as specific as possible.
General information:
Instrument model number and hardware options if any, with serial
number
Probes used
Your name, company, mailing address, phone number, FAX number,
email address
Please indicate if you would like to be contacted by Tektronix about
your suggestion or comments
Application specific information:
Software version number
Description of the problem such that technical support can duplicate the
problem
The setup file of the oscilloscope and the application is also required to
identify the problem
If possible, save the waveform on which you are performing the
measurement as a .wfm file
Note: To find the Software version number, click Help > About in the
application.
Once you have gathered this information, you can contact technical support
by fax or through email. If using email, be sure to enter "TDSVNM Software
Problem" in the subject line, and attach the .wfm files.
You can then attach the file to your email (depending on the capabilities of
your email editor).
TDSVNM Timing and Protocol Decode Software 9
Introduction
10 TDSVNM Timing and Protocol Decode Software
Getting Started
Compatibility
For information on oscilloscope Compatibility, refer to the Optional
Applications Software on Windows-Based Oscilloscopes Installation Manual,
Tektronix part number 071-1888-00. The manual is also available as a PDF
file.
Recommended Accessories
The following probes are supported by the application:
P5205
P5200
P6246
P6247
P6248
ADA400A
TCA-1MEG, probe adapter for use with supported oscilloscopes
TPA-BNC, TEKPROBE™ BNC adapter for use with supported
oscilloscopes
Starting the Application
Depending on the type of oscilloscope that you have, you can start the
software in the following way:
1. To start the application, do one of the following:
• Select File > Run Application > in the oscilloscope menu bar. Then
select CAN and LIN Timing and Protocol Decode Software
• Select App > CAN and LIN Timing and Protocol Decode Software
• Select Analyze > CAN and LIN Timing and Protocol Decode
Software
2. A splash screen indicates that the software loading is in progress.
3. The oscilloscope display resizes to fit in the upper part of the screen.
The lower part of the oscilloscope screen displays the TDSVNM CAN
and LIN Timing and Protocol Decode Software.
TDSVNM Timing and Protocol Decode Software 11
Getting Started
4. The software is automatically set to its default settings.
5. If you gain access to the oscilloscope functions, then the oscilloscope
display appears full screen and the TDSVNM CAN and LIN Timing and
Protocol Decode Software recedes to the background.
6. To return to the TDSVNM CAN and LIN Timing and Protocol Decode
Software, do one of the following:
• Select App on the top right of the oscilloscope display
• Select App > Restore Application
• Select Analyze > Restore Application
Requirements and Restrictions
Requirements
DPO-CAN Bus trigger is required:
To define Elementary Trigger
To carry out the Oscillator Tolerance, Eye Diagram, and Data Rate
tests
The ATM-1 Automotive Trigger Module is required:
To specify trigger conditions and perform elementary, logical or
advanced triggering during protocol decoding
To carry out the Oscillator Tolerance, Eye Diagram, and Data Rate
tests
The ATM-1 Automotive Trigger Module can be ordered from Crescent Heart
Software (www.c-h-s.com). Contact a Tektronix representative for more
details.
Restrictions
It is recommended that you do not connect more than one ATM-1 module to
an oscilloscope.
Maximizing and Minimizing the Application
The software appears even when you minimize the oscilloscope display.
To minimize the software, click File > Minimize. The TDSVNM CAN
and LIN Timing and Protocol Decode Software window minimizes to
the Windows taskbar. The upper part of the screen has the oscilloscope
display and the lower part of the screen has the desktop.
To restore the minimized window to its previous size, click its taskbar
button.
12 TDSVNM Timing and Protocol Decode Software
To hide the window, click on the top-right of the software
window.
Returning to the Application
When you gain access to the oscilloscope functions, the oscilloscope fills the
display. You can access the oscilloscope functions in the following ways:
Choose either the menu bar or the toolbar mode on the oscilloscope, and
then gain access to the menus.
Click App > Restore Application or click APP on the top right of the
oscilloscope display to return to the software.
Exiting the Application
To exit the software:
Getting Started
1. On the menu bar, click File > Exit or click
2. The Exit dialog box appears.
3. Click either Yes, No, or Cancel. Yes is selected by default. When the
software runs, it automatically changes some oscilloscope settings.
When you quit the software, you can choose whether to retain these
settings or restore the previous settings.
Application Directories and Usage
The TDSVNM CAN and LIN Timing and Protocol Decode Software uses
directories to save and recall setup files and uses file name extensions to
identify the file type. Table 2-1 lists the default directory names.
Table 2-1: Directory names and their use
Default directory names* Directory use
C:\TekApplications\TDSVNM TDSVNM application home location
\Images Plot files
\Reports Results of protocol decoding
\Setup Setup files for TDSVNM
\Temp Temporary files
*All subdirectories are located in the C:\TekApplications\TDSVNM directory.
.
TDSVNM Timing and Protocol Decode Software 13
Getting Started
14 TDSVNM Timing and Protocol Decode Software
Operating Basics
Protocol Decoding and Timing Analysis Tests
The TDSVNM CAN and LIN Timing and Protocol Decode Software offers
the tests as shown in Table 3-1:
Table 3-1: Descriptions of protocols and tests
Protocol or Test Description
CAN bus (Controller Area
Network)
LIN Bus (Local Interconnect
Network)
CAN and LIN Decodes and displays the waveform acquired simultaneously on CAN and LIN buses.
Eye Diagram Represents the overlaying of the individual NRZ bits of a CAN message. This allows
Oscillator Tolerance Measures the deviation of the oscillator deduced from the transmitted data. This
Data Rate Extracts the data rate of the selected node based on the ID from the acquired CAN
Bus Traffic Determines the load of the CAN message on the CAN bus network expressed as
Wakeup Time Measures the time difference between time of the ignition signal to the first CAN
Propagation Delay Measures the time taken for a message to travel from one end of the network to the
Converts the waveform acquired by the oscilloscope from the Controller Area Network
into a bit stream and decodes it to display CAN protocol messages in the protocol
analysis window.
The application supports CAN Dual Wire, CAN Single Wire and CAN Fault Tolerant
buses.
Converts the waveform acquired on the Local Interconnect Network into a bit stream
and decodes it to display LIN protocol messages in the protocol analysis window.
you to find electrical noise in the CAN message such as amplitude aberration, jitter,
spikes and glitches. The ability to view Eye diagram with Ack and without Ack bit allows
you to realize the impact of propagation delay on the bit time and adjust the sample
point accordingly.
enables you to program the segments and to operate the node synchronously with
other nodes. Oscillator tolerance is measured in percentage.
frame signal. Data rate is measured in Kbps.
percentage of bus occupancy. Determines the details of the message that occupies the
bus of the selected node. It also gives the number of CAN messages and frame types
on the network. Bus traffic is measured in percentage.
message during network start up. Wakeup time is measured in seconds.
other end. This is measured for the signal transition on the start frame of the message.
Propagation delay is measured in seconds.
TDSVNM Timing and Protocol Decode Software 15
Operating Basics
TDSVNM Application View
Figure 3-1 shows the default application view and its areas.
Figure 3-1: Application view and its areas
Menus
The menu bar of TDSVNM software consists of the following menus (as
shown in Figure 3-2):
Figure 3-2: Application Menu
File Menu
Figure 3-3: File Menu
16 TDSVNM Timing and Protocol Decode Software
Table 3-2: File Menu selections and their descriptions
Menu selection Description
Recall Default Click File > Recall Default to recall the default settings for both the software and the
oscilloscope.
Recall Click File > Recall to recall the previously saved settings for the software from an .ini
file.
Save Click File > Save to save the software settings to an .ini file.
Recall Recent Click File > Recall Recent to select among the recently saved and recalled setups.
Preferences Click File > Preferences to set preferences.
Minimize Click File > Minimize to minimize the software window.
Exit Click File > Exit to quit the software.
Tests Menu
Operating Basics
Figure 3-4: Tests Menu
Table 3-3: Tests Menu selections and their descriptions
Menu selection Description
Select Click Tests > Select to display or modify the protocol or test selection.
Configure Click Tests > Configure to display or modify the configuration parameters for the
selected protocol or test.
Trigger Setup Click Tests > Trigger Setup to display or modify the trigger parameters and trigger
type for the selected protocol or timing test.
Connect Click Tests > Connect to display the connection instructions for the selected
protocol or test.
Results Menu
Figure 3-5: Results Menu
Click Results > Details to display the detailed results of the last test that was
conducted.
TDSVNM Timing and Protocol Decode Software 17
Operating Basics
Utilities Menu
Figure 3-6: Utilities Menu
Click Utilities > ATM-1 License Installation to install or upgrade ATM-1
automotive trigger module license key information.
Help Menu
Figure 3-7: Help Menu
Table 3-4: Help Menu selection and their descriptions
Menu selection Description
Help Topics Click Help > Help Topics to display the help file for the TDSVNM CAN and LIN
Timing and Protocol Decode Software.
About TDSVNM Click Help > About TDSVNM to display a dialog box with information about the
current TDSVNM CAN and LIN Timing and Protocol Decode Software.
About ATM-1 Click Help > About ATM-1 to display a dialog box with information about the current
ATM-1 automotive trigger module.
Selection Panel
The selection panel appears at the far left of every screen. It allows you to
navigate through the TDSVNM application.
Figure 3-8: Select panel
18 TDSVNM Timing and Protocol Decode Software
Operating Basics
Table 3-5 shows the buttons and their descriptions:
Table 3-5: Select panel buttons and their descriptions
Button Description
Select Click Select to display the protocols and timing tests to select from.
Configure Click Configure to display the configuration parameters for the selected protocol or
timing test.
Trigger Setup Click Trigger Setup to display the trigger parameters and trigger type for the selected
protocol or timing test.
Connect Click Connect to display the connection instructions for the selected protocol or timing
test.
After you select and configure a protocol or test, you can either set up the
trigger conditions or make equipment connections for the selected protocol or
test.
Control Panel
The control panel appears at the far right of every screen. It controls all of the
application’s operations.
Figure 3-9: Control panel
Table 3-6 shows the buttons and their descriptions:
Table 3-6: Control panel buttons and their descriptions
Button Description
Run Executes the protocol decoding or test selected. The Run button changes to Stop when the
test is running. You can stop the test by clicking the Stop button.
Results Displays the respective Result details panel for the protocol or the test that is configured.
Clear Clears the results displayed on the results screen.
Sequence Mode
Single Run
Free Run
No Acq
Same as the “Single” button on the oscilloscope front panel.
Runs continuously until you press Stop.
Conducts the test without acquiring the waveform.
TDSVNM Timing and Protocol Decode Software 19
Operating Basics
Note: When Ref sources are selected in configuration panel, only the No Acq
sequencer mode is available.
Status Bar
The status bar at the bottom of the application screen dynamically updates
according to your selection. The status bar shows the selected Protocol or
Test, Configuration parameters, Hints, and Sequence state.
Figure 3-10: Status bar
Setting Preferences
File > Preferences
Figure 3-11 shows the preferences that you can set.
Figure 3-11: Setting preferences
Math Destination is applicable only when:
The probe type is single-ended
20 TDSVNM Timing and Protocol Decode Software
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