YOKOGAWA DL7480 Bedienungsanleitung

User’s

Manual

Yokogawa Electric Corporation

IM 701450-51E

3rd Edition

DL7440/DL7480

Digital Oscilloscope

Serial Bus Signal Analysis Function

(Includes the I2C Bus Signal/CAN Bus Signal/

SPI Bus Signal Analysis Function)

IM 701450-51E

3rd Edition : June 2009 (YK)

Thank you for purchasing the DL7440/DL7480 Digital Oscilloscope with the Serial Bus

Signal Analysis Function (/F5 option*, /F7 option*, or F8 option*). This user’s manual

describes only the serial bus signal analysis function (I2C Bus Signal Analysis Function,

CAN Bus Signal Analysis Function, and SPI Bus Signal Analysis Function. For

information about other functions, operating procedures, and handling precautions of the

DL7440/DL7480, see the following manuals.

Manual Title Manual No. Description

DL7440/DL7480 IM 701450-01E Explains all functions and procedures of the

User’s Manual DL7440/DL7480 excluding the communication

functions.

DL7440/DL7480 IM 701450-02E Explains briefly the functions and basic

Operation Guide operations.

DL7440/DL7480 IM 701450-17E Describes the communication interface

Communication Interface functions.

User’s Manual

(CD-ROM)

* /F5 option: Model with the I2C Bus Signal Analysis Function and SPI Bus Signal Analysis

Function

/F7 option: Model with the CAN Bus Signal Analysis Function and SPI Bus Signal Analysis

Function

/F8 option: Model with the I2C Bus Signal Analysis Function, CAN Bus Signal Analysis

Function, and SPI Bus Signal Analysis Function

Notes

•The contents of this manual are subject to change without prior notice as a result of

continuing improvements to the instrument’s performance and functions. The figures

given in this manual may differ from those that actually appear on your screen.

•Every effort has been made in the preparation of this manual to ensure the accuracy

of its contents. However, should you have any questions or find any errors, please

contact your nearest YOKOGAWA dealer.

•Copying or reproducing all or any part of the contents of this manual without the

permission of Yokogawa Electric Corporation is strictly prohibited.

•The TCP/IP software of this product and the document concerning the TCP/IP

software have been developed/created by YOKOGAWA based on the BSD

Networking Software, Release 1 that has been licensed from the University of

California.

Trademarks

•Microsoft, Internet Explorer, MS-DOS, Windows, Windows NT, and Windows XP are

either registered trademarks or trademarks of Microsoft Corporation in the United

States and/or other countries.

•Adobe, Acrobat, and PostScript are trademarks of Adobe Systems Incorporated.

•Zip is either a registered trademark or trademark of Iomega Corporation in the United

States and/or other countries.

•UNIX is either a registered trademark or trademark of The Open Group in the United

States and/or other countries.

•For purposes of this manual, the TM and ® symbols do not accompany their

respective trademark names or registered trademark names.

•Other company and product names are trademarks or registered trademarks of their

respective companies.

Revisions

•1st Edition: February 2004

•2nd Edition: April 2005

•3rd Edition: June 2009

ii IM 701450-51E

Conventions Used in This Manual

Safety Markings

The following marking is used in this manual.

Improper handling or use can lead to injury to the user or damage

to the instrument.

This symbol appears on the instrument to

indicate that the user must refer to the user’s manual for special

instructions. The same symbol appears in the corresponding place

in the user’s manual to identify those instructions. In the manual,

the symbol is used in conjunction with the word “WARNING” or

“CAUTION.”

WARNING Calls attention to actions or conditions that could cause serious

injury or death to the user, and precautions that can be taken to

prevent such occurrences.

CAUTION Calls attentions to actions or conditions that could cause light injury

to the user or damage to the instrument or user’s data, and

precautions that can be taken to prevent such occurrences.

Note

Calls attention to information that is important for proper operation

of the instrument.

Notations Used on Pages Describing Operating Procedures

On pages that describe the operating procedures in Chapter 1 through 3, the following

notations are used to distinguish the procedures from their explanations.

Procedure

This subsection contains the operating procedure used to carry out

the function described in the current chapter. All procedures are

written with inexperienced users in mind; experienced users may

not need to carry out all the steps.

Explanation

This section describes the setup items and the limitations regarding

the procedures.

Notations Used in the Procedures

Panel Keys and Soft keys

Bold characters used in the procedural explanations indicate characters that are marked on

the panel keys or the characters of the soft keys or menus displayed on the screen.

SHIFT + Panel Key

SHIFT+key

means you will press the SHIFT key to turn ON the green indicator that is located

above the SHIFT key and then press the panel key. The setup menu marked in purple above

the panel key that you pressed appears on the screen.

Jog Shuttle &SELECT

Jog shuttle & SELECT

indicates selecting or setting parameters and entering values using the

jog shuttle, the SELECT key, and other keys. For details on the procedure, see section 4.1 or

4.2 in the

DL7440/DL7480 User’s Manual (IM701450-01E)

Units

kDenotes 1000. Example: 100 kS/s

KDenotes 1024. Example: 459 KB (file data size)

iii

IM 701450-51E

Contents

Conventions Used in This Manual...................................................................................................ii

Chapter 1 I2C Bus Signal Analysis Function

1.1 Overview of the I2C Bus Signal Analysis Function ........................................................... 1-1

1.2 Flow of Operation ............................................................................................................. 1-2

1.3 Connecting the Probe ...................................................................................................... 1-3

1.4 Setting the I2C Bus Signal Acquisition Conditions ........................................................... 1-4

•Setting the Trigger Conditions of the I2C Bus Signal ................................................................. 1-4

•Setting the Start Condition or Stop Condition ............................................................................ 1-6

•Setting the Combination Trigger ................................................................................................1-7

•Setting the Trigger Level, Trigger Coupling, Etc. ....................................................................... 1-9

•Setting the Trigger Mode............................................................................................................ 1-9

•Setting the Record Length ......................................................................................................... 1-9

•Starting/Stopping the I2C Bus Signal Acquisition ....................................................................... 1-9

•Examples of Setting the Trigger Conditions of the I2C Bus Signal........................................... 1-15

1.5 Analyzing/Searching Data .............................................................................................. 1-25

1.6 Saving the Data of the Detailed Analysis List ................................................................ 1-35

1.7 Error Messages.............................................................................................................. 1-37

1.8 Communication Commands........................................................................................... 1-38

Chapter 2 CAN Bus Signal Analysis Function

2.1 Overview of the CAN Bus Analysis Function ................................................................... 2-1

2.2 Flow of Operation ............................................................................................................. 2-2

2.3 Connecting the Probe ...................................................................................................... 2-3

2.4 Setting CAN Bus Signal Acquisition Conditions ............................................................... 2-5

•Setting the Trigger Conditions of the CAN Bus Signal ............................................................... 2-5

•Setting the Combination Trigger ................................................................................................2-9

•Setting the Trigger Level, Trigger Coupling, Etc. ......................................................................2-11

•Setting the Trigger Mode...........................................................................................................2-11

•Setting the Record Length ........................................................................................................ 2-11

•Starting/Stopping the CAN Bus Signal Acquisition ................................................................... 2-11

2.5 Analyzing/Searching Data .............................................................................................. 2-19

2.6 Using Cursors ................................................................................................................2-35

2.7 Saving the Data of the Detailed Analysis List ................................................................ 2-38

2.8 Error Messages.............................................................................................................. 2-40

2.9 Communication Commands........................................................................................... 2-41

Index

iv IM 701450-51E

Contents

Chapter 3 SPI Bus Signal Analysis Function

3.1 Overview of the SPI Bus Signal Analysis Function .......................................................... 3-1

3.2 Flow of Operation ............................................................................................................. 3-3

3.3 Connecting the Probe ...................................................................................................... 3-4

3.4 Setting SPI Bus Signal Acquisition Conditions ................................................................. 3-5

•Setting the Trigger Conditions of the SPI Bus Signal................................................................. 3-5

•Setting the Combination Trigger ................................................................................................3-7

•Setting the Trigger Level, Trigger Coupling, Etc. ..................................................................... 3-10

•Setting the Trigger Mode.......................................................................................................... 3-10

•Setting the Record Length ....................................................................................................... 3-10

•Starting/Stopping the SPI Bus Signal Acquisition .................................................................... 3-10

•Examples of SPI Bus Signal Trigger Conditions ...................................................................... 3-16

3.5 Analyzing/Searching Data .............................................................................................. 3-23

3.6 Saving the Data of the Detailed Analysis List ................................................................ 3-37

3.7 Error Messages .............................................................................................................. 3-39

3.8 Communication Commands........................................................................................... 3-40

Chapter 4 Specification

4.1 I2C Bus Signal Analysis Function ..................................................................................... 4-1

4.2 CAN Bus Signal Analysis Function .................................................................................. 4-3

4.3 SPI Bus Signal Analysis Function .................................................................................... 4-5

Index

1-1

IM 701450-51E

C Bus Signal Analysis Function

Chapter 1 I2C Bus Signal Analysis Function

1.1 Overview of the I2C Bus Signal Analysis

Function

About the I2C Bus Signal Analysis Function

I2C Bus is an abbreviation for Integrated Circuit Bus. It is a bidirectional bus for

connecting ICs. By using this function, you will be able to analyze data while displaying

the I2C-bus signal waveform. The I2C Bus Signal Analysis Function consists of the

following three main functions.

Trigger Function <See page 1-4 for the operating procedure>

Various trigger conditions for the I2C Bus signal can be set up such as when a start

condition is detected, when an Acknowledge bit is not detected, when the specified

address (7 bits + R/W

) pattern is met, or when the data pattern is met or not met (Non-

Ack trigger or address & data trigger).

Triggers can also be activated by combining the I2C Bus signal (SCL signal (CH1)/SDA

signal (CH2) and the CH3 to CH8 signal (CH3 and CH4 on the DL7440) (combination

trigger).

...

SDA

SCL

Start condition

123456789

Acknowledge bit

Data byte

Trigger activated here

123456789

Acknowledge present (L) Acknowledge not

present (H)

Stop condition

Address + R/W bit

...

SDA

SCL

Start condition

123456789

Acknowledge bit

Data byte

Trigger activated here

123456789

Stop condition

Non-ACK Trigger Example

• When Activating a Trigger When the Acknowledge Bit Is Not Present (When the SDA Signal is high)

Address & Data Trigger Example

• When Activating a Trigger on the Start Condition or Address Pattern/Data Pattern

Address + R/W bit

Analysis Function <See page 1-25 for the operating procedure>

Analyzes the I2C Bus signal that was acquired using the trigger function and lists the

analysis data (hexadecimal notation) at the byte level and the status of the Acknowledge

bit. When you select any analysis data on this analysis result list, the I2C Bus signal

waveform corresponding to the analysis data is automatically displayed. You can view

the details of the analysis result such as the position of the start condition/stop condition

or the time from the analysis reference point on the detailed analysis list. You can save

the detailed analysis list on a storage medium in ASCII format.

In addition, you can analyze the data by switching between two sets of I2C Bus signals

(CH1: SCL and CH2: SDA or CH3: SCL and CH4: SDA).

Search Function <See page 1-28 for the operating procedure>

After analyzing the I2C Bus signal that was acquired using the trigger function, this

function searches in the forward or reverse direction for data that matches a specified

address pattern, data pattern, or Acknowledge bit condition, and displays the matched

data expanded on the ZOOM display. You can specify the address pattern or data

pattern using binary or hexadecimal values. You can also search indefinite data.

1-2 IM 701450-51E

1.2 Flow of Operation

The figure below provides an overview of the flow of operations when using the I2C Bus

Signal Analysis Function. For details about specific items, see the referenced pages in

this manual or the respective sections in the

DL7440/DL7480 User’s Manual (IM701450-

01E)

Setting I

C Bus Signal Acquisition Conditions

• Setting Trigger Conditions

• Setting the Trigger Mode

• Setting the Record Length

Page 1-4

Section 6.1

Section 7.2

Starting Acquisition of I

C Bus Signals Page 1-9

Stopping Acquisition of I

C Bus Signals Page 1-9

Performing Searches

Page 1-28

Saving Data from the

Detailed Analysis Results

List Page 1-35

Performing the Analysis Page 1-25

*1. Indicates reference sections from the DL7440/DL7480 user’s manual

(IM701450-01E).

*2. Indicates reference pages from this manual.

Before Using the Functions

• Installing the Instrument

• Connecting the Power Supply and

Turning ON/OFF the Power Switch

• Connecting the Probe

Section 3.2

Section 3.3

Page 1-3

1-3

IM 701450-51E

C Bus Signal Analysis Function

1.3 Connecting the Probe

Input Terminals

Connect the probe (or other input cables such as the BNC cable) to any of the input

terminals (4 terminals marked as CH1 to CH4 on the DL7440 and 8 terminals marked

CH1 to CH8 on the DL7480) located on the lower section of the front panel. The input

impedance is 1 MΩ±1.0% and approximately 20 pF or 50 Ω±1.0%.

CAUTION

• The maximum input voltage for 1-MΩinput is 400 V (DC + ACpeak) or 282

Vrms when the frequency is 1 kHz or less. Applying a voltage exceeding either

of these voltages can damage the input section. If the frequency is above 1

kHz, the input section may be damaged even when the voltage is below the

values specified above.

•The maximum input voltage for 50-Ωinput is 5 Vrms or 10 Vpeak. Applying a

voltage exceeding either of these voltages can damage the input section.

DL7440

1MΩ/20pF 400Vpk CAT II 50

Ω5Vrms, 10Vpk

DL7480

1MΩ/20pF 400Vpk CAT II 50

Ω5Vrms, 10Vpk

Precautions to Be Taken When Connecting a Probe

•When activating triggers on the I2C Bus signal, apply the SCL (serial clock) signal and

SDA (serial data ) signal to the CH1 and CH2 input terminals, respectively.

• When connecting a probe to the instrument for the first time, perform phase correction

of the probe as described in section 3.5, “Compensating the Probe (Phase

Correction)” in the

DL7440/DL7480 User’s Manual (IM701450-01E)

. Failure to do so

may result in unstable gain across different frequencies, thereby preventing correct

measurement. Calibration must be performed for each channel that is to be

connected.

•Note that if the object being measured is directly connected to the instrument without

using a probe, correct measurements may not be possible due to loading effects.

Note

Data analysis and data search can be performed on I2C Bus signals applied to CH3 and CH4.

For details, see section 1.5, “Analyzing/Searching Data.”

1-4 IM 701450-51E

1.4 Setting the I2C Bus Signal Acquisition

Conditions

I2C Bus signal is acquired using a certain condition* of the I2C Bus signal as a trigger

condition.

*When a start condition is detected, when an Acknowledge bit is not detected, when the

specified address (7 bits + R/W

) pattern is met, when the data pattern is met or not met, etc.

Procedure

PRESET

ZOOM

MODE

POSITION

ENHANCED

SIMPLE

LOGIC

V/DIV TIME/DIV

VERTICAL

TRIGGER

TRIG D

ACTION

DELAY

CLEAR TRACESNAPSHOT

HELP

HORIZONTAL

• To exit the menu during operation, press ESC located

above the soft keys.

• In the procedural explanation below, the term jog shuttle &

SELECT refers to the operation of selecting/setting items

and entering values using the jog shuttle, SELECT and

RESET keys.For details on the operation using the jog

shuttle, SELECT, and RESET, see sections 4.1 or 4.2 in the

DL7440/DL7480 User’s Manual.

• For a description of the operation using a USB keyboard or

a USB mouse, see section 4.3 in the DL7440/DL7480

User’s Manual.

1. Press ENHANCED. The ENHANCED menu appears.

2. Press the Type soft key. The trigger type selection menu appears.

3. Press the I2C Bus soft key.

Setting the Trigger Conditions of the I2C Bus Signal

4. Press the I2C Setup soft key. The I2C Setup dialog box opens.

1-5

IM 701450-51E

C Bus Signal Analysis Function

To activate triggers on the start condition or address pattern/data pattern, proceed to

step 5 below. To activate triggers when an Acknowledge bit is not detected (Non-Ack

trigger), proceed to step 16 on the next page.

Activating Triggers on the;Start Condition or Address Pattern/Data Pattern

5. Use jog shuttle & SELECT to select Adrs&Data (I2C Trigger Type box).

•Setting the Notation System of the Address Pattern or Data Pattern

6. Use jog shuttle & SELECT to set the notation system used to set the pattern to

Hex or Bin (Pattern Format box). The format used to set the Address Pattern box,

Data1 Pattern box, and Data2 Pattern box are set to the specified notation system.

•Selecting the Items Used as Trigger Conditions

7. Use job shuttle & SELECT to select whether Start Condition, Address Pattern,

Data1 Pattern, Byte Count, and Data2 Pattern are used as trigger conditions. If

you select Address Patten, proceed to step 8. If you select Data1 Pattern,

proceed to step 9. If you wish to set Byte Count, proceed to step 11. If you

select Data2 Pattern, proceed to step 12.

•Highlighting of the mark to the left of each item indicates that it is used as a trigger

condition.

•Start Condition and Byte Count items are always used as trigger conditions (the mark

to the left is always highlighted).

•If you do not wish to use byte count as a trigger condition, set Byte Count to 0 (see

step 11).

•When Using Address Pattern as a Trigger Condition

8. Use jog shuttle & SELECT to set the address pattern in hexadecimal or binary

(Address Pattern box). When determination is not to be performed, select X.

When using binary (BIN) notation, set the LSB using “R” (Read), “W” (Write), and “X.”

•When Using Data1 Pattern as a Trigger Condition

9. Use jog shuttle & SELECT to set the determination pattern of Data1 in

hexadecimal or binary (Data1 Pattern box). When determination is not to be

performed, select X.

10. Use jog shuttle & SELECT to set the Condition of the Data1 Pattern to True or

False (Condition box).

•When Setting the Byte Count

11. Use jog shuttle & SELECT to set the byte count in the range of 0 to 9999 bytes

(Byte Count box).

•If you do not wish to use byte count as a trigger condition, set the value to 0.

•You can also set the byte count using the soft key that appears at the bottom of the

ENHANCED menu (a menu that appears when you carry out steps 1 to 3 on the

previous page). This byte count soft key menu appears only when I2C Trigger Type is

set to Adrs&Data.

Select Adrs&Data.

Select the setting format

of the address pattern

and data pattern.

The condition of activating

the trigger when a start

condition is detected is

always enabled.

To activate triggers on the

address pattern, select this

check box and set the

pattern.

To activate triggers on the

Data1 pattern, select this

check box and set the

pattern and conditions. Set the byte count in the

range of 0 to 9999.

When Pattern Format is set to Bin

Set the LSB using R (Read), W (Write), or X.

1.4 Setting the I2C Bus Signal Acquisition Conditions

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