YOKOGAWA TA520 User manual

Time Inter val Analyzer

IM 704310-01E

2nd Edition

Foreword

Notes

Trademarks

Thank you for purchasing the YOKOGAWA TA520 Time Interval Analyzer.
This User’s Manual contains useful information about the precautions, functions, and
operating procedures of the instrument. To ensure correct use, please read this manual
thoroughly before operation.
Keep this manual in a safe place for quick reference in the event a question arises.
The following manual is also provided in addition to this manual.

Manual Name Manual No. Description

TA520 GP-IB Interface IM704310-12E Describes the communication
User’s Manual functions of the GP-IB interface.

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 the actual 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 as listed on the back cover of this manual.
Copying or reproducing all or any part of the contents of this manual without
YOKOGAWA’s permission is strictly prohibited.

MS-DOS is a registered trademark of Microsoft Corporation.
Other product names are trademarks or registered trademarks of their respective
holders.

Revisions

1st Edition: April 1999
2nd Edition: November 1999

Disk No. HF09
2nd Edition: November 1999 (YK)
All Rights Reserved, Copyright © 1999 Yokogawa Electric Corporation

iIM 704310-01E

Checking the Contents of the Package

Unpack the box and check the contents before operating the instrument. If some of the
contents are not correct or missing or if there is physical damage, contact the dealer
from which you purchased them.

Main Unit

Check that the model name and suffix code given on the name plate match those on the
order.

WARNING CAUTION

MODEL
SUFFIX
NO.

MadeinJapan

MODEL
SUFFIX
NO.

Made inJapan

MODEL (Type Name)

704310

SUFFIX (Suffix code)

Suffix Code Description

Power voltage -1 100-120 VAC

-5 200-240 VAC

Power cord -D UL/CSA Standards Power Cord (Part No.: A1006WD)

-F VDE Standard Power Cord (Part No.: A1009WD)

-Q BS Standard Power Cord (Part No.: A1054WD)

-R SAA Standard Power Cord (Part No.: A1024WD)

Optional specifications /C8 Internal hard disk + SCSI

/F1 Inter-symbolic interference analysis function

[Maximum Rated Voltage: 125 V, Maximum Rated Current:
7 A]

[Maximum Rated Voltage: 250 V, Maximum Rated Current:
10 A]

[Maximum Rated Voltage: 250 V, Maximum Rated Current:
10 A]

[Maximum Rated Voltage: 240 V, Maximum Rated Current:
10 A]

NO. (Instrument No.)

When contacting the dealer from which you purchased the instrument, please quote the
instrument No.

Note

We recommend you keep the packing box. The box is useful when you need to transport the
instrument.

ii IM 704310-01E

Standard Accessories

The following standard accessories are supplied with the instrument.

1. Power cord See page 2 1 See page 2

2. Rubber feet A9088ZM 1 A set of two pieces

3. Printer roll chart B9850NX 1 Thermalsensible paper

4. User’s Manual IM 704310-01E 1 User Manual (this manual)

5. User’s Manual IM 704310-12E 1 GP-IB Interface User’s Manual

6. Spare fuse for the power A1436EF 1 Spare, attach to fuse holder of the
supply main unit

Checking the Contents of the Package

Part Name Part Number Quantity Notes

Total length: 30 m

1. Power cord (one of the following power cords

is supplied according to the instrument's suffix codes)

UL/CSA standard
A1006WD

D

2

VDE standard
A1009WD

3

Optional Accessories (sold separately)

The following optional accessories are sold separately.
For information and ordering, contact your dealer.

Part Name Part No. Sales Unit Notes

BNC cable 366924 1 BNC-BNC, Length: 1 m
BNC cable 366925 1 BNC-BNC, Length: 2 m
Rack mount kit 751533-E6 1 For EIA single mount
Rack mount kit 751534-E6 1 For EIA dual mount
Rack mount kit 751533-J6 1 For JIS single mount
Rack mount kit 751534-J6 1 For JIS dual mount

BS standard
A1054WD

F Q R

4, 5

SAA standard
A1024WD

iiiIM 704310-01E

Safety Precautions

This instrument is an IEC safety class I instrument (provided with terminal for protective
grounding).
The following general safety precautions must be observed during all phases of
operation. If the instrument is used in a manner not specified in this manual, the
protection provided by the instrument may be impaired. YOKOGAWA Electric
Corporation assumes no liability for the customer’s failure to comply with these
requirements.

The following symbols are used on this instrument.

“Handle with care.” To avoid injury, death of personnel or damage to the
instrument, the operator must refer to the explanation in the User’s Manual or
Service Manual.

Alternating current

ON (power)

OFF (power)

ON (power) state

OFF (power) state

iv IM 704310-01E

Safety Precautions

Make sure to comply with the following safety precautions. Not complying might
result in injury, death of personnel, or cause damage to the instrument.

WARNING

Power Supply

Ensure that the source voltage matches the voltage of the power supply before
turning ON the power.

Power Cord and Plug

To prevent an electric shock or fire, be sure to use the power cord supplied by
YOKOGAWA. The main power plug must be plugged into an outlet with a
protective grounding terminal. Do not invalidate protection by using an extension
cord without protective grounding.

Protective Grounding

Make sure to connect the protective grounding to prevent electric shock before
turning ON the power.

Necessity of Protective Grounding

Never cut off the internal or external protective grounding wire or disconnect the
wiring of the protective grounding terminal. Doing so poses a potential shock
hazard.

Defect of Protective Grounding and Fuse

Do not operate the instrument when the protective grounding or the fuse might be
defective. Also, make sure to check them before operation.

Fuse

To avoid fire, only use a fuse that has a rating (voltage, current, and type) that is
specified by the instrument. When replacing a fuse, turn OFF the power switch
and unplug the power cord. Never short the fuse holder.

Do Not Operate in Explosive Atmosphere

Do not operate the instrument in the presence of flammable liquids or vapors.
Operation of any electrical instrument in such an environment constitutes a safety
hazard.

Do Not Remove Covers

Some areas inside the instrument have high voltages. Do not remove the cover if
the power supply is connected. The cover should be removed by YOKOGAWA’s
qualified personnel only.

External Connection

Connect the protective grounding before connecting to the item under
measurement or control unit.

vIM 704310-01E

Structure of the Manual

This User’s Manual consists of the following 15 chapters and an index.

Chapter 1 Functions

Describes the measurement principles and functions of the instrument. Operating
procedures are not given in this chapter. However, reading this chapter will help you
understand the operating procedures given in the chapters that follow.

Chapter 2 Names and Uses of Parts

Describes the names and uses of each part of the instrument. For keys, references are
given to sections (or pages) in the manual where operating procedures are explained.

Chapter 3 Before Starting Measurements

Describes precautions on use, how to install the instrument, how to connect the power
supply, turn ON/OFF the power switch, connect a probe, and set the date and time.

Chapter 4 Basic Operations

Describes how to start/stop the measurement acquisition of input signals, enter values
using the numerical keys, and operate the rotary knob.

Chapter 5 Setting the Sampling Mode and Measurement Functions

Describes how to set the sampling mode and measurement function (item).

Chapter 6 Setting the Acquisition Conditions of the Measurement Input Signal

Describes how to set the acquisition conditions of the measurement input signal such as
input coupling, input impedance, trigger mode, trigger level, gate, sampling size,
sampling interval, arming source, slope, delay, and inhibit.B

Chapter 7 Displaying the Measured/Calculated Results in the Time Stamp Mode

Describes how to configure the displays such as histograms, time variations, lists,
statistics, and panorama.

Chapter 8 Displaying the Measured/Calculated Results in the Hardware

Histogram Mode

Describes how to configure the displays such as histograms, lists, statistics, multi­windows, panoramas, and histogram sum.

Chapter 9 Using the Inter-symbolic Interference Analysis Function (Option)

Describes how to use the inter-symbolic interference analysis function.

Chapter 10 Storing/Recalling Setup Information from the Internal Memory

Describes how to store and recall setup information from the internal memory and how to
change the setup.

Chapter 11 Saving and Loading Data and Connecting to a PC

Describes how to save and load data such as setup information and measured/
calculated results from the floppy disk, internal hard disk (option), and external SCSI
devices and how to format disks and delete data.

Chapter 12 Outputting Screen Images

Describes how to output screen images to the internal printer, the floppy disk, the internal
hard disk (option), and to an external SCSI device.

Chapter 13 Using Other Functions

Describes how to initialize the settings, calibrate the instrument, output monitor signals,
confirm current conditions, adjust the brightness of the LCD, and other such operations.

Chapter 14 Troubleshooting and Maintenance

Describes the possible causes of problems and their appropriate corrective measures.
Describes the messages that are displayed on the screen. Describes how to log errors,
perform self-tests, adjust the time base, carry out performance tests, and replace fuses.

Chapter 15 Specifications

Describes the specifications of the instrument.

Index

Gives an index.

vi IM 704310-01E

Conventions Used in this Manual

Unit

k Denotes 1000. Example: 100kHz
K Denotes 1024. Example: 720KB (Storage capacity of floppy disks)

Symbols

The following symbols are used in this manual.

Affixed to the instrument. Indicates danger to personnel or
instrument and the operator must refer to the User’s Manual. The
symbol is used in the User’s Manual to indicate the reference.

WARNING

CAUTION

Note

Symbols used on pages in which operating procedures are given.

In chapters 3 through 13, on pages where operating procedures are given, the following
symbols are used to classify a description.

Procedure

Explanation

Describes precautions that should be observed to prevent injury or
death to the user.

Describes precautions that should be observed to prevent minor or
moderate injury, or damage to the instrument.

Provides important information for the proper operation of the
instrument.

Describes the keys used during operation and the operating
procedures. In some cases, you may not have to follow the steps
in the order they are given.

Describes the details of the settings and the restrictions that exist
with the operating procedure. A detailed description of the function
is not provided in this section. See chapter 1 for a detailed
description of the functions.

viiIM 704310-01E

Contents

Checking the Contents of the Package ...........................................................................................ii

Safety Precautions ......................................................................................................................................iv

Structure of the Manual............................................................................................................................vi

Conventions Used in this Manual.....................................................................................................vii

Chapter 1 Functions

1.1 System Configuration and Block Diagram ................................................................................ 1-1

1.2 Measurement Principle ............................................................................................................. 1-3

1.3 Sampling Mode ......................................................................................................................... 1-4

1.4 Measurement Functions (Measurement Items) ........................................................................ 1-5

Period, Time Interval, Pulse Width............................................................................................................... 1-5

1.5 Acquisition Conditions for the Input Signal Being Measured .................................................... 1-6

Measurement Block ..................................................................................................................................... 1-6

Block Sampling ............................................................................................................................................ 1-7

Gate, Sampling Interval ............................................................................................................................... 1-8

Arming, Arming Delay .................................................................................................................................. 1-9

Inhibit ......................................................................................................................................................... 1-10

Input Coupling, Input Impedance................................................................................................................1-11

Trigger Mode/Trigger Level, Reference Signal I/O .................................................................................... 1-12

1.6 Analysis and Calculation .........................................................................................................1-13

Readout Function ...................................................................................................................................... 1-13

Statistical Calculation................................................................................................................................. 1-14

1.7 Displaying the Measured/Calculated Results ......................................................................... 1-18

Histogram Display...................................................................................................................................... 1-18

List Display ................................................................................................................................................ 1-19

Time Variation Display ............................................................................................................................... 1-20

Statistics Display........................................................................................................................................ 1-21

Panorama Display ..................................................................................................................................... 1-22

Multi-window function ................................................................................................................................ 1-23

Auto window function, Scaling Function .................................................................................................... 1-24

1.8 Other Functions ...................................................................................................................... 1-25

External Signal Input/Output, Communication, Storing and Recalling Setup Information,
Saving and Loading Data from Floppy Disks, the Internal Hard Disk, and External SCSI Devices,

Initialization of Setup Information............................................................................................................... 1-25

Calibration, Beep and Click Sounds, Error Logging, Self-test,

Inter-symbol Interference Analysis Function (Option)................................................................................ 1-26

Chapter 2 Names and Uses of Parts

2.1 Front Panel ............................................................................................................................... 2-1

2.2 Rear Panel ................................................................................................................................ 2-2

2.3 Screen Display ..........................................................................................................................2-3

Chapter 3 Before Starting Measurements

3.1 Precautions on the Use of the instrument.................................................................................3-1

3.2 Installing the Instrument ............................................................................................................3-3

3.3 Connecting the Power Cord ......................................................................................................3-5

3.4 Turning the Power Switch ON/OFF...........................................................................................3-6

3.5 Connecting Cables and Probes ................................................................................................ 3-7

viii IM 704310-01E

Contents

3.6 Calibrating the Probe (Performing Phase Correction)...............................................................3-8

3.7 Setting the Date and Time ...................................................................................................... 3-10

Chapter 4 Basic Operations

4.1 Starting and Stopping the Acquisition of an Input Signal .......................................................... 4-1

4.2 Setting Numerical Values and Strings....................................................................................... 4-2

4.3 The Way to Look at the Soft Key Menu/Using the Rotary Knob and Select Key ......................4-4

Chapter 5 Setting the Sampling Mode and Measurement Functions

5.1 Selecting the Sampling Mode ...................................................................................................5-1

5.2 Setting the Period Measurement .............................................................................................. 5-2

5.3 Setting the Time Interval Measurement .................................................................................... 5-3

5.4 Setting the Pulse Width Measurement...................................................................................... 5-5

Chapter 6 Setting the Acquisition Conditions of the Measurement Input

Signal

6.1 Setting the Gate ........................................................................................................................ 6-1

6.2 Setting the Sampling Interval .................................................................................................... 6-4

6.3 Performing Block Sampling....................................................................................................... 6-5

6.4 Setting the Arming Source, Slope, and Delay........................................................................... 6-7

6.5 Setting the Inhibit Function ..................................................................................................... 6-11

6.6 Setting the Input Coupling, Input Impedance, and Trigger......................................................6-13

6.7 Inputting/Outputting the Reference Signal .............................................................................. 6-15

1

2

3

4

5

6

7

Chapter 7 Displaying the Measured/Calculated Results in the Time Stamp

Mode

7.1 Displaying the Histogram .......................................................................................................... 7-1

7.2 Displaying the List .....................................................................................................................7-3

7.3 Displaying the Time Variation....................................................................................................7-5

7.4 Displaying the Statistics ............................................................................................................ 7-7

7.5 Displaying the Panorama Display ............................................................................................. 7-9

7.6 Setting the Statistical Calculation Parameters (Calc/Stat) ...................................................... 7-12

7.7 Changing the Scale Value.......................................................................................................7-15

7.8 Reading the Data .................................................................................................................... 7-17

Chapter 8 Displaying the Measured/Calculated Results in the Hardware

Histogram Mode

8.1 Displaying the Histogram .......................................................................................................... 8-1

8.2 Displaying the List .....................................................................................................................8-3

8.3 Displaying the Statistics ............................................................................................................ 8-5

8.4 Displaying the Panorama Display ............................................................................................. 8-7

8.5 Using the Multi-Window Function ........................................................................................... 8-10

8.6 Using the Auto Window Function............................................................................................8-13

8.7 Setting the Statistical Calculation Parameters (Calc/Stat) ...................................................... 8-16

8.8 Changing the Scale Value.......................................................................................................8-18

8.9 Reading the Data .................................................................................................................... 8-20

8

9

10

11

12

13

14

Chapter 9 Using the Inter-symbol Interference Analysis Function (Option)

9.1 Using the Inter-symbol Interference Analysis Function............................................................. 9-1

9.2 Setting the Conditions for Data Extraction ................................................................................ 9-3

9.3 Analysis Example...................................................................................................................... 9-6

15

Index

ixIM 704310-01E

Contents

Chapter 10 Storing/Recalling Setup Information from the Internal Memory

10.1 Storing the Setup Information to the Internal Memory ............................................................ 10-1

10.2 Recalling Setup Information from the Internal Memory ...........................................................10-2

Chapter 11 Saving and Loading Data and Connecting to a PC

11.1 Floppy Disks ........................................................................................................................... 11-1

11.2 Internal Hard Disk (Option) ..................................................................................................... 11-2

11.3 Connecting SCSI Devices ....................................................................................................... 11-3

11.4 Changing the SCSI ID Number ............................................................................................... 11-4

11.5 Formatting the Disk ................................................................................................................. 11-5

11.6 Saving and Loading Setup Information ................................................................................... 11-8

11.7 Saving and Loading the Measurement Results .................................................................... 11-12

11.8 Saving the Statistical Calculation Results ............................................................................. 11-16

11.9 Deleting Files ........................................................................................................................ 11-18

11.10 Copying Files ........................................................................................................................ 11-21

11.11 Changing the File Name and Creating Directories................................................................ 11-24

11.12 Connecting the Instrument to a PC....................................................................................... 11-26

Chapter 12 Outputting Screen Images

12.1 Attaching the Paper Roll for Printing ....................................................................................... 12-1

12.2 Printing .................................................................................................................................... 12-4

12.3 Saving Screen Images to Floppy Disk, Internal Hard Disk (Option),

and External SCSI Device ...................................................................................................... 12-6

Chapter 13 Using Other Functions

13.1 Initializing the Setup Information ............................................................................................. 13-1

13.2 Calibrating the Instrument ....................................................................................................... 13-4

13.3 Outputting Monitor Signals ......................................................................................................13-5

13.4 Checking the Setup Conditions of the Instrument and the ROM Version ............................... 13-6

13.5 Turning ON/OFF the Click Sound, Beep Sound, and Warning Display, Setting the Brightness of

the LCD Monitor ......................................................................................................................13-7

Chapter 14 Troubleshooting and Maintenance

14.1 Troubleshooting ...................................................................................................................... 14-1

14.2 Messages ................................................................................................................................14-2

14.3 Using the Error Logging Function ........................................................................................... 14-4

14.4 Performing a Self-test ............................................................................................................. 14-5

14.5 Adjusting the Time Base ......................................................................................................... 14-8

14.6 Executing the Performance Test ...........................................................................................14-10

14.7 Replacing the Power Fuse .................................................................................................... 14-20

14.8 Recommended Replacement Parts ...................................................................................... 14-21

Chapter 15 Specifications

15.1 Measurement Input and Trigger ..............................................................................................15-1

15.2 Measurement Functions (Measurement Items) ...................................................................... 15-2

15.3 Gate, Arming, and Inhibit ........................................................................................................ 15-4

15.4 Block Sampling ....................................................................................................................... 15-4

15.5 Display .................................................................................................................................... 15-5

15.6 Auto Window Function ............................................................................................................ 15-6

15.7 Inter-symbol Interference Analysis Function (Option) ............................................................. 15-7

15.8 Rear Panel Input/Output ......................................................................................................... 15-7

x IM 704310-01E

Contents

15.9 GP-IB Interface ....................................................................................................................... 15-7

15.10 SCSI (Option).......................................................................................................................... 15-8

15.11 Time Base ............................................................................................................................... 15-8

15.12 Internal Memory Function .......................................................................................................15-8

15.13 Built-in Printer ......................................................................................................................... 15-9

15.14 Built-in Floppy Disk Drive........................................................................................................ 15-9

15.15 Internal Hard Disk Drive (Option)............................................................................................ 15-9

15.16 General Specifications .......................................................................................................... 15-10

15.17 External Dimensions ............................................................................................................. 15-12

Index........................................................................................................................................................... Index-1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Index

xiIM 704310-01E

Chapter 1 Functions

1.1 System Configuration and Block Diagram

System Configuration

External SCSI device

Inhibit input
External arming input

Block Diagram

10MHz

Reference

REF.IN
REF.OUT

CHA

MONITOR

OUT(A)

CHB

MONITOR

OUT(B)

(shared with the external gate input)
Reference input

Monitor output
Reference output

PLL Clock
Generator

Measuring

Comparator

Input
AMP

Trig
DAC

Signal
Multiplexer
&
Fractional
Pulse
Generator

Input
AMP

Comparator

Trig
DAC

Clock

TX1

TY1

TX2

TY2

Floppy disk

T/V

Converter

T/V

Converter

T/V

Converter

T/V

Converter

AB

CH

CH

EXT ARM/GATE IN

INHIBIT IN

Item under

measurement

DATA

Generator

1 to 4

DATA

Generator

5 to 8

SCSI (option)

Input
signal

Acquisition
Memory

&
Memory
Controller

Acquisition
Memory

&
Memory
Controller

PC
Remote control
Data collection/analysis

CPU

LCD

Printer

SCSI&

HDD

FDD

GP-IB

1

Functions

EXT ARM/
EXT GATE

INHIBIT

External Arming Signal

Inhibit Signal

Acquisition Controller

1-1IM 704310-01E

1.1 System Configuration and Block Diagram

Signal Flow

A signal that is input to the input terminal (Ach/Bch) is converted to a low-impedance
signal by the input amplifier (Input AMP). It is then passed to the comparator where it is
converted to a binary signal. The signal from the input amplifier is also output as a
monitor signal (MONITOR OUT(A)/MONITOR OUT(B)).
The signal multiplexer selects the measurement signal according to the specified
measurement function (item) and outputs the fractional sections according to the
measurement clock as fractional pulses. The fractional pulse width is measured with 25­ps resolution by the time/voltage converter (T/V Converter) and sent to the data
generator where the measured data are generated.
The TA520 has eight data generator systems that generate data alternately. The
acquisition controller controls the overall acquisition process including the external
arming signal or inhibit signal.
In the time stamp mode, both the measured values and time stamp data (elapsed time)
are acquired in the acquisition memory. In the hardware histogram mode, however, only
the frequencies of occurrence of each measured value are acquired in the acquisition
memory. The acquired data are read by the CPU via the memory controller, at which
point the data are used in statistical calculations or displayed on the LCD.
Either the signal from the internal crystal oscillator (compensated against temperature
drift) or an external reference signal (signal from the REFERENCE IN terminal) can be
used as the reference signal. In either case, the signal is passed through a 10-MHz
band-pass filter and output as a reference clock output. The measurement clock uses
the frequency multiples of this reference clock.

1-2 IM 704310-01E

1.2 Measurement Principle

Measurement Principle

Time shorter than the period of the reference clock is called fractional time. In general,
since the signal being measured and the measurement clock are not synchronized,
fractional time exists at both the beginning and the end of measurements. This
instrument generates a “fractional pulse” which is a pulse signal amounting to the sum of
the fractional time and one cycle of the reference clock.
If the pulse width of the signal being measured, the period of the measurement clock,
and the times of the fractional pulses are taken to be T, t
be broken into two terms: integer multiple of the measurement clock, N
of the fractional pulses, Ta,Tb.

T=N

•t

+(Ta–Tb)

0

This instrument converts the time (Ta, Tb) of the fractional pulse that it generated at the
beginning and end of the measurement to voltage values, which are then converted to
digital values using an 8-bit A/D converter.
In this way, the instrument is able to measure the time of the fractional pulse at 25-ps
time resolution per 1 LSB. T is determined by substituting the measured times of the
fractional pulses into the variables T

, Ta, and Tb, respectively, T can

0

and Tb of the above equation.

a

T

•t

, and the time

0

1

Functions

Signal to be measured

Reference clock

Fractional pulse

Time-voltage conversion

t

12

T

a

0

V =k·T

aa

A/D conversion A/D conversion

T =N·t + (T –T )

0

k: A/D conversion factor

N

T

b

b

a

V =k·T

b b

1-3IM 704310-01E

1.3 Sampling Mode

Sampling Mode ≡See 5.1 for the operating procedures≡

There are two sampling modes, time stamp mode and hardware histogram mode. The
sampling method (data acquisition method), the display format after measurements, and
methods of analysis and calculation vary depending on the sampling mode. For details
on the display format, see section 1.7 “Displaying the Measured/Calculated Results.”

Time stamp mode

The measured values and their time stamps* are acquired in the acquisition memory and
are handled as time-series data. The maximum sampling size (maximum number of
data points that can be acquired) is 512,000 points. There are four types of display
formats: histogram, list (measured values and time stamps), time variation, and statistics.
* The time elapsed from the point the arming occurred to the point the measurement of

one sample ended is called a time stamp.

Hardware histogram mode

The measured values and the frequencies of occurrence of those values are acquired in
the acquisition memory. The maximum sampling size (maximum number of data points
that can be acquired) is 10
(measured values and frequencies of occurrence), and statistics.

9

points. There are three display formats: histogram, list

The differences between the time stamp mode (T.S.) and hardware histogram
mode (H.H.)

T.S. H.H.

Histogram display Yes Yes
List display Yes Yes
Time variation Yes No
Statistics display Yes Yes
Multi-window function No*
Maximum sampling size 512,000 10
Longest sampling time 320 s*

*1 When using the ISI (inter-symbolic interference analysis function) in the T.S. mode, the multi-

window function is used.

*2 320 s when the sampling interval is set to [0 µs], 3200 s when it is set to anything else.

1

2

Yes

9

3200 s

1-4 IM 704310-01E

1.4 Measurement Functions (Measurement Items)

Period ≡See 5.2 for the operating procedures≡

Measures the pulse interval (time between rising edges or falling edges) of the input
signal. Either rising edge or falling edge can be selected. Channel A or B can be
selected for the measurement.

Example (rising slope is selected)

Measured Measured Measured

CH A/
CH B

Time Interval ≡See 5.3 for the operating procedures≡

Measures the time between the edge of the input signal of channel A and the first edge
of the input signal of channel B. For the various combinations of slopes, see section 5.3
“Setting the Time Interval Measurement.”

1

Functions

Example (Both channels A and B: rise)

A B

Measured

Measured

CH A

CH B

Example (Channel A: both rise and fall, channel B: rise)

A B

Measured Measured Measured

CH A

CH B

Pulse Width ≡See 5.4 for the operating procedures≡

Measures the time of the positive side (between the rising edge and falling edge) or the
negative side (between the falling edge and the rising edge) of the input signal. For the
various patterns of polarities, see section 5.4 “Setting the Pulse Width Measurement.”
Channel A or B can be selected for the measurement.

Example (positive: rising to falling)

Measured Measured Measured Measured

CH A/
CH B

1-5IM 704310-01E

1.5 Acquisition Conditions for the Input Signal Being Measured

Measurement Block

The TA520 repeats the process of making measurements, processing data, and
displaying the result. The “measurement block” refers to the smallest unit of
measurement that is handled in one cycle of the process. If the number of samples
(number of data points) acquired in one cycle of the process is N, then “one
measurement block” refers to measuring, processing, and displaying N samples of data.
As shown in the examples below, each sample (S1, S2, S3, to SN) in the measurement
block is measured for the corresponding sampling pulse (P1, P2, P3, to PN) that occurs
according to the specified sampling interval (see the section on sampling interval given
later).

When the period of the input signal is longer than the sampling interval

Preparation

for measurement

S1 S2 S3

Input signal

Sampling
pulse

1 block 1 block

Measurement block Measurement block

S1 S2 S3 SN

P1 P2 P3 P4 P2 P3 P4

Sampling interval

Data processing,

display

Input signal

Sampling
pulse

When the period of the input signal is shorter than the sampling interval

1 block

Measurement block

S1

S2 S3 S4 SN S1 S2 S3 S4

P1 P2 P3 P4 P2 P3 P4

Sampling interval

Data processing,

display

Preparation

for measurement

Measurement block

P1PN

1 block

1-6 IM 704310-01E

1.5 Acquisition Conditions for the Input Signal Being Measured

Block Sampling ≡See 6.3 for the operating procedures≡

The single measurement block explained above can be repeated N times. Repetitively
measuring “one measurement block” N times is called block sampling.
In block sampling, data processing and display are done after measuring all N blocks of
data. Also, in block sampling, you can set a pause time, defined as the period of time
between block measurements.
The display and analysis of data that has been block sampled varies depending on the
sampling mode as follows.

During the time stamp mode

The list and time variation for each measurement block can be displayed and statistical
calculations can be performed.
The maximum selectable block size (number of repetitions: N) is 100.

During the hardware histogram mode

An histogram of all measurement blocks can be displayed and statistical calculations can
be performed on them. Lists and statistical calculations on each block are not allowed.
The maximum selectable block size (number of repetitions: N) is 1000.

The relationship between the pause time and arming during block sampling is shown
below.

For Arming: Ext/with arming delay, pause time: OFF

Arming delay

1

Functions

Arming delay

External arming

Input signal

External arming

Input signal

1st block

S1 S2 S3 S1 S2 S3

Measurement start

For Arming: Ext/no arming delay, pause time: enabled

Arming delay

1st block

S1 S2 S3 S1 S2 S3

Measurement start Measurement start

Pause time

For Arming: Auto, pause time: OFF

1st block 2nd block 3rd block

Input signal

S1 S2 S3 S1 S2 S3 S1 S2 S3

2nd block

Measurement start

Arming delay

2nd block

Input signal

For Arming: Auto, pause time: enabled

1st block 2nd block

S1 S2 S3 S1 S2 S3 S1 S2 S3

Pause time

Pause time

3rd block

1-7IM 704310-01E

1.5 Acquisition Conditions for the Input Signal Being Measured

Gate ≡See 6.1 for the operating procedures≡

You can specify the size of a measurement block in terms of the number of events or the
gate time. Measurement is carried out for the number of events or over the time when
the gate is open. There are three types of gates.

Event gate

Each sample is called an event. For example, measurement of one period is equivalent
to one event. Up to 512,000 events during time stamp mode, and up to 10
during the hardware histogram mode can be set as long as the time is within the
maximum sampling time (see page 1-4) since arming (see next page).

Time gate

Up to 10 s of gate time can be set as long as the maximum sampling size of each
sampling mode is not exceeded.

External gate

The external arming input terminal (see next page) is used to control the gate. The gate
can be open for up to the longest allowed sampling time (see page 1-4) as long as the
maximum sampling size of each sampling mode is not exceeded. You can also select
which polarity, positive or negative, to use in opening the gate.

Gate is open

9

events

External gate

Input signal

1 Measurement block

S1 S2 S3

Start of measurement

Sampling Interval ≡See 6.2 for the operating procedures≡

The sampling interval is the interval at which data samples are acquired.
Samples are acquired continuously at the specified interval. However, samples cannot
be acquired continuously if the period of the input signal is shorter than 23 ns.
The operation varies depending on the sampling mode.

During time stamp mode

The TA520 generates sampling pulses (see the measurement block section described
earlier) at the sampling interval. After the sampling pulse, when the input signal meets
the trigger condition (trigger level, slope, etc.), a measurement is made. The available
sampling intervals are 0 µs and 1 µs to 1 s. When 0 µs is selected, the data are sampled
at approximately 23 ns intervals.

During hardware histogram mode

The sampling interval is fixed to approximately 23 ns and cannot be changed.

1-8 IM 704310-01E

1.5 Acquisition Conditions for the Input Signal Being Measured

Arming ≡See 6.4 for the operating procedures≡

Arming is the trigger that starts the measurement of a measurement block. There are
two types of arming: auto arming in which the measurement starts when the START key
is pressed or the START command is issued, and external arming in which the
measurement starts when an external signal is received.

Auto arming

Arming is activated automatically after the START key is pressed or the START
command is issued. In this case, the arming source is an internal signal.

External arming

After the measurement is started, arming is activated by applying a signal to the external
arming input terminal. In this case, the arming source is an external signal. You can
select whether the rising or falling edge is used to activate the arming. The following
signal levels (arming levels) are available: TTL (1.4 V), TTL/10 (0.14 V), and 0 V.

ArmingStart of measurement

Measurement

block

Arming Delay ≡See 6.4 for the operating procedures≡

When using external arming, you can delay the start of the measurement by a certain
amount of time or number of events after an arming occurs.
There are two types of arming delays.

1

Functions

Time delay

The measurement starts after being delayed for the specified time (up to 1 s).

Event delay

The measurement starts after being delayed for the specified number of events (up to

1000000).

1-9IM 704310-01E

1.5 Acquisition Conditions for the Input Signal Being Measured

Inhibit ≡See 6.5 for the operating procedures≡

You can inhibit measurements by applying a signal to the INHIBIT input terminal. This is
possible even while the gate is open or during measurement after arming activation. You
can inhibit measurements for time periods as long as the longest allowed sampling time
(see page 1-4).
You can select whether the positive or negative polarity of the signal will be used to
inhibit the measurement. The following signal levels (inhibit) are available: TTL (1.4 V),
TTL/10 (0.14 V), and 0 V.
The following examples show some of the relationships between the inhibit signal and
gating/arming.

Relation between the inhibit signal and gating

Mesurement is inhibited.

Inhibit signal

Gate

Input signal

Gate is open.

S1 S2 S3

Start of measurement

Not counted as an
event during inhibition
of measurement.

Not measured.

S4 S5

Measurement is resumed.

Relation between the inhibit signal and gating/external arming

Inhibit signal

Gate is open.

Gate

External arming

Input signal

S1 S2 S3

Start of measurement

Mesurement is inhibited.

Not measured.

S4 S5

Measurement is resumed.

Not counted as an
event during inhibition
of measurement.

Relation between the inhibit signal and gating/external arming/arming delay

Mesurement is inhibited.

Inhibit signal

Gate is open.

Gate

Arming delay

External arming

Not measured.

Input signal

S1 S2 S3

Start of measurement

Not counted as an
event during inhibition
of measurement.

S4 S5

Measurement
is resumed.

1-10 IM 704310-01E

1.5 Acquisition Conditions for the Input Signal Being Measured

Input Coupling ≡See 6.6 for the operating procedures≡

When you want to measure just the amplitude (AC component) of an input signal or a
signal riding on top of a certain DC voltage, measurements can be facilitated if the DC
component is removed from the signal. In other cases, you may want to measure both
the AC and DC components of the input signal. In these cases, an appropriate input
coupling is applied to the signal when entering the input amplifier. The following types of
input coupling are available:

AC

The signal is input through a capacitor. This setting is used to remove the DC
component from the input signal in order to measure just the amplitude of a signal or a
signal riding on top of a certain DC voltage.

Input terminal

DC

The signal is input directly to the amplifier. This setting is used when measuring both the
AC and DC components of a signal.

Input terminal

Input
amplifier

Input
amplifier

1

Functions

Input Impedance ≡See 6.6 for the operating procedures≡

To reduce attenuation and distortion of the measurement signal, the input impedance of
CHA and CHB of the instrument can be selected so that it matches the output
impedance of the signal source. The available settings are 50 Ω and 1 MΩ.

1-11IM 704310-01E

1.5 Acquisition Conditions for the Input Signal Being Measured

Trigger Mode/Trigger Level ≡See 6.6 for the operating procedures≡

When measuring one sample, you can select the level at which the measurement is to
be carried out (trigger condition). The level at which to activate the trigger is called the
trigger level.

Manual trigger

The trigger level is set to the value that is specified using the rotary knob or the
numerical keys.

Single auto trigger

Taking the maximum and minimum values of the input signal during the first
measurement block to be 100% and 0%, respectively, the trigger level is set to the
specified percentage level. The trigger level for all following blocks is set to this level.

Repeat auto trigger

Taking the maximum and minimum values of the input signal during the first
measurement block to be 100% and 0%, respectively, the trigger level is set to the
specified percentage level. Unlike single trigger, the trigger level is reset for each
measurement block.

When the [Level] is set to 50% using single auto trigger

1st measurement block

Max. value (100%)

50% level

Min. value (0%)

Detect max./min. values

Trigger level

(Input signal)

Reference Signal I/O ≡See 6.7 for the operating procedures≡

Reference input

The instrument has an internal reference clock used for making measurements.
However, a 10-MHz external signal can be applied to the REFERENCE IN terminal on
the rear panel and can be used as the reference clock instead.

Reference output

The internal reference clock signal or the externally applied reference clock signal is
passed through a 10-MHz band-pass filter and is continuously output from the
REFERENCE OUT terminal.

Trigger activated

1-12 IM 704310-01E

1.6 Analysis and Calculation

Readout Function ≡See 7.8 and 8.9 for the operating procedures≡

X1, X2, and Y markers can be displayed for histogram displays (see section 1.7). X1,
X2, Y1, and Y2 markers can be displayed for time variation displays (see section 1.7).
The coordinates of the cross points of these markers and the histogram and time
variation graphs can be read. In addition, statistical calculation can be performed
independently over the area enclosed by the markers (see next section).

For histogram displays

The values shown on the bottom of the graph represent the following:
X1: X coordinate (measured value) of the X1 marker
V1: Y coordinate (frequency of occurrence X1) of the X1 marker
X2: X coordinate (measured value) of the X2 marker
V2: Y coordinate (frequency of occurrence X2) of the X2 marker
∆X: X2–X1 Num: Number of samples used in the statistical calculation

1

Functions

X1 marker

Readout values

For time variation displays

The values shown on the bottom of the graph represent the following:
X1: X coordinate (time stamp) of the X1 marker
V1: Y coordinate (measured value) of the X1 marker
X2: X coordinate (time stamp) of the X2 marker
V2: Y coordinate (measured value) of the X2 marker
∆X: X2–X1 ∆V: |V2–V1|
Y1: Y coordinate (measured value) of the Y1 marker
Y2: Y coordinate (measured value) of the Y2 marker
∆Y: |Y2–Y1| T.Num: Number of samples used in the statistical calculation

X1 marker

X2 marker

Y marker

X2 marker

Y2 marker

Y1 marker

Readout values

Note

• The Y marker on the histogram display is used to set the area for performing statistical
calculations.

• During time variation display, if there are multiple data points at the marker position, the
average value is displayed. If there is no data at the marker position, an asterisk (*) is
displayed.

1-13IM 704310-01E

1.6 Analysis and Calculation

Statistical Calculation ≡See 7.6 and 8.7 for the operating procedures≡

You can set the area on which to calculate statistics, the constant T, and the parameters
to be calculated.

Select the area to be used in the statistical calculations

Select whether to calculate the statistics over the entire window or the area enclosed by
the markers.
If the time variation is displayed on data that was block sampled in the time stamp
mode, you can also select the [Block] on which to calculate the statistics.
If you are using the multi-window or auto window function, the statistics are calculated
over the area enclosed by markers for each window.

When calculating the statistics over an area enclosed by markers

For histogram display

For time variation display

X1 marker

Y marker

X2 marker

Calculate statistics over this area

X1 marker

X2 marker

Y1 marker

Y2 marker

Setting the slope (Calculation Slope) and polarity (Calculation Polarity)

You can specify the slope and polarity for the statistical calculation only for the following
measurement functions.
The statistics can be calculated separately on data having the specified slope or polarity.

• For time interval measurements, when the slope setting is either

A B

or

A B

.

• For pulse width measurements, when the polarity setting is .

Setting the Constant T

Set the constant T used when calculating the statistical values jitter and MELE. This
value corresponds to the read-out clock when the measured device is an optical disk or
optical disk drive.
You cannot change the value of T when using the auto window function since it is
automatically set.

Statistical calculation parameters

Statistics can be calculated based on the measured values (during time stamp mode) or
histogram (during hardware histogram mode). The results of the statistical calculation
can be displayed on the histogram, statistic, and time variation displays (see section

1.7).
The equations used to calculate some of the statistics vary depending on the sampling
mode. In addition, in the time stamp mode, you can select to calculate the statistics on
the time variation or on the histogram.

During the time stamp mode

The following differences exist between the time variation display and the histogram
display.
Time variation: You can set the area over which to calculate the statistics with the time

stamp and measured value.

Histogram : You can set the area over which to calculate the statistics with the

measured value (bin) and frequency of occurrence.

1-14 IM 704310-01E

1.6 Analysis and Calculation

In the following equations, n is the number of samples, Xi is the measured value of
each sample, and Xj (only for histograms) is the class value of each bin of the
histogram.
If the statistics are calculated on the time variation, “T.” is placed in front of the
statistical calculation parameter names.

• Average value

Calculates the average value of the measured values.

n

Average =

1

X

Σ

i

n

i = 1

• Maximum value

Indicates the maximum measured value.

Maximum = [Xi]

max

• Minimum value

Indicates the minimum measured value.

Minimum = [Xi]

min

• Peak-to-Peak

Calculates the difference between the maximum and minimum values.

Peak - Peak = Maximum – Minimum

• Standard deviation (σ)

Calculates the standard deviation of the measured values. This indicates the
degree to which the values are spread out from the average value.

n

σ =

1

Xi – Average)

Σ(

n

i = 1

2

1

Functions

• Flutter (σ/Average)

Measures the flutter. This indicates the spread in the values in terms of a
percentage of the average value.

σ / Average =

σ

Average

× 100 (%)

• σ/T (only for histograms)

Calculates the histogram jitter using the specified constant T. Indicates the spread
of the values in terms of a percentage of the value T.

σ / T =

σ

× 100 (%)

T

• Effect Length Error, E.L.Error for short (only for histograms)

X
Originally, X

is the center value of the x axis in the window. See section 1.7 for details.

CENTER

represented the value around which the measured data would

CENTER

be distributed.
Indicates the offset of the measured average value with respect to X

E.L.Error=Average–X

CENTER

CENTER

.

• Maximum Effect Error, MELE for short (only for histograms)

Indicates the offset of the measured average value with respect to X

CENTER

in terms

of a percentage of the value T.

MELE =

|Average–X

T

CENTER

|

×100(%)

1-15IM 704310-01E

1.6 Analysis and Calculation

• Median (only for histograms)

Indicates the median of the histogram.

Median= [Xj]

Median

• Mode (only for histograms)

Indicates the class value with the highest frequency of occurrence (most frequent
value).

Mode= [Xj]

Mode

• T.(P-P/Average)

Indicates the spread in the Peak-to-Peak values in terms of a percentage of the
average value.

T.(P-P/Average) =

P-P

Average

×100

• T.RF (only for time variation)

Calculates the average value of T.(P-P/Average) of all blocks that were block
sampled.
N is the total number of blocks. P-P

is the Peak-to-Peak value of each block, and

k

AVEk is the average value of each block.

N

T.RF =

1

N

k=1

P-P

AVE

k

k

×100

During the hardware histogram mode

In the equation below, n is the number of bins in the histogram. A bin of a histogram
refers to a bar that indicates the frequency of occurrence on the histogram. Xi is the
class value of each bin of the histogram. Depending on the span setting of the X-axis,
the interval width of each bin becomes 25 ps in which case Xi becomes the measured
value. For details, see section 1.7 “Histogram Display.”

• Average

Calculates the average value of the histogram. Pi is the relative frequency*.

n

Average =

Σ

i = 1

Xi×P

i

* If the total number of samples on which the statistics are being calculated is N,

and the frequency of occurrence (number of samples) of a certain bin is Ni, then
the relative frequency becomes Pi = Ni/N.

• Maximum value

Indicates the maximum class value.

Maximum = [Xi]

max

• Minimum value

Indicates the minimum class value.

Minimum = [Xi]

min

• Peak-to-Peak

Calculates the difference between the maximum and minimum values.

Peak- Peak = Maximum – Minimum

1-16 IM 704310-01E

1.6 Analysis and Calculation

• Standard deviation (σ)

Calculates the standard deviation of the histogram. This indicates the degree to
which the values are spread out from the average value. Pi is the relative
frequency.

n

σ =

Xi – Average)2×P

Σ(

i = 1

i

• Flutter (σ/Average)

Measures the flutter of the histogram. Indicates the spread in the values from the
average value in terms of a percentage of the average value.

σ / Average =

σ

Average

× 100 (%)

• σ/T

Calculates the histogram jitter using the specified constant T. Indicates the spread
in the values in terms of a percentage of the value T.

σ / T =

σ

× 100 (%)

T

• Effect Length Error, E.L.Error for short

X
Originally, X

is the center value of the x axis in the window. See section 1.7 for details.

CENTER

represented the value around which the measured data would

CENTER

be distributed.
Indicates the offset of the actually measured average value with respect to
X

E.L.Error=Average–X

CENTER

.

CENTER

1

Functions

• Maximum Effect Length Error, MELE for short

Indicates the offset of the measured average value with respect to X

CENTER

terms of a percentage of the value T.

MELE =

|Average–X

T

CENTER

|

×100(%)

• Median

Indicates the median of the histogram.

Median= [Xi]

Median

• Mode

Indicates the class value with the highest frequency of occurrence (most frequent
value).

Mode= [Xi]

Mode

in

1-17IM 704310-01E

1.7 Displaying the Measured/Calculated Results

Histogram Display ≡See 7.1 and 8.1 for the operating procedures≡

By displaying the histogram (frequency distribution) of the measured data, you can see
the data distribution. You can manually set the X-axis (time) and Y-axis (frequency) of
the histogram. You can also have them set automatically using the auto scale function.
The following items can be set.

• The center value of the X-axis (X Center)

• The X-axis width (X Span)

• The scaling format of the Y-axis (select linear scale or log scale)

• The maximum Y-axis value (Y High)

Frequency distribution

The histogram is displayed according to the settings made for the above values. If a
class has a time span, the average value will be used as the class value. For example, if
the minimum and maximum values in a class are 505 ns and 515 ns, respectively, 510
ns will be treated as the class value. The samples in this class are all considered to
correspond to 510 ns (if the value is read out with the marker, the class value is read
out).
As shown in the diagram below, each value on the X-axis of the instrument represents a
class value or a displacement. The histogram is created by accumulating the number of
samples that fall in each class.

Y-axis Scale (Log scale for this example)
Y-axis max.

value (Y High)

One bar is called a “bin.”

X-axis span
(X Span)

Class

Left most value
on the X-axis

(Displacement in the
negative direction from X center)

X-axis center value

(Class value at the center,
X Center)

Right most value
on the X-axis

(Displacement in the
positive direction from
X center)

Items that can be displayed

Besides the histogram, you can select whether or not to display the marker read-out
values, the statistics, and a panorama window.

Panorama window

Displays statistics

Displays readout values

Histograms displayed with overlap
set to OFF and at half size

1-18 IM 704310-01E

1.7 Displaying the Measured/Calculated Results

List Display ≡See 7.2 and 8.2 for the operating procedures≡

Display a list of the measured data. You can move and display different parts of the list
using the jump function which can move to the top, center, or end of the data or by
specifying the data number. The displayed contents vary depending on the sampling
mode as follows:

During time stamp mode

The time stamp and measured values are listed within the range of the number of events
or time specified for the [gate] (see section 1.5). The specified data number is
highlighted and the time variation waveform corresponding to the data number displays a
dotted line and a
When block sampling, each block can be individually listed by specifying the number of
the measurement block.

Data number

During hardware histogram mode

The measured values (the class values of the histogram) and the frequencies are listed
within the range of the width of the X-axis (X Span) of the histogram display. The
specified data number is highlighted and the time variation waveform corresponding to
the data number displays a dotted line and a
When using the multi-window or auto window function, the list is displayed for each
window (3T, 4T, All, etc.).

mark.

Time stamp

Measured value

Highlights the specified data

mark.

1

Functions

Data number

Class value

Frequency

Highlights the specified data

1-19IM 704310-01E

1.7 Displaying the Measured/Calculated Results

Time V ariation Display ≡See 7.3 for the operating procedures≡

During the time stamp mode, the measured data and time stamps are treated as data
and acquired to the acquisition memory. The time variation display function uses this
time-series data to display the variation of the measured value in relation to the elapsed
time since the arming.
You can manually set the X-axis (time) and Y-axis (measured data) for the time variation
display. You can also have them set automatically using the auto scale function. The
following items can be set.

• The minimum X-axis value (X Minimum)

• The center value of the Y-axis (Y Center)

• The X-axis width (X Span)

• The Y-axis width (Y Span)

Y-axis span (Y Span)

Y-axis
center value

Displacement in the positive direction from Y center

X-axis min. value

Displacement in the negative
direction from Y center

Displacement in the positive
direction from X minimum

X-axis span (X Span)

Items that can be displayed

Besides the histogram, you can select whether or not to display the marker read-out
values, the statistics, and a panorama window.

Panorama window

Displays statistics

Displays readout values

Time stamp displayed at half size

Display method

You can select whether or not to show the grid and whether or not to connect the data
points with a line.

1-20 IM 704310-01E

1.7 Displaying the Measured/Calculated Results

Statistics Display ≡See 7.4 and 8.3 for the operating procedures≡

The statistics are calculated over the area and on the items that are specified in the
Calculation/Statistics setting menu that is accessed with the [Calc/Stat] soft key. A list of
results is displayed. For information on the parameters of the statistical calculation, the
details of the calculation, and the area, see section 1.6 “Analysis and Calculation.” The
displayed results vary depending on the sampling mode.

For time stamp mode

You can select to calculate the statistics of the histogram or of the time variation.
Depending on the above selection, the statistical parameters that can be calculated vary.

When calculating the statistics
of the histogram

Statistical parameter

Statistical calculation
area

Statistics

• If the statistics are calculated on the time variation, σ/T, E.L.Error, MELE, Median,
and Mode are not calculated or displayed, but T.(P-P/Average) and T.RF are.

• If the statistics are calculated on the time variation of data that was block sampled,
then you can select ALL or Block for the displayed statistics.
All :Display all of the statistics on each measurement block.
Block : Display only the statistics for the specified block.

• You can select the area over which the statistics are calculated from the following
choices:
Window: Calculate over the entire window.
Marker : Calculate over the area enclosed by the markers.
Block : For data that was block sampled, calculate over each measurement

block.
Calculate over all the data when block sampling is OFF.

When calculating the statistics
of the time variation

Statistical parameter

1

Functions

Statistical calculation
area

Statistics

For time interval measurement and pulse width measurement, the statistics can be
displayed separately for each slope and polarity setting (see page 1-14 “Setting the
slope and polarity”).

1-21IM 704310-01E

1.7 Displaying the Measured/Calculated Results

For hardware histogram mode

When using single window, you can select the area over which to calculate the statistics
from Window (entire window) and Marker (area enclosed by the markers).
When using the multi-window or auto window function, the statistics are calculated over
the area enclosed by the markers. The following display styles are available for
displaying the statistics:

• All : Display the statistics of all windows that were defined in the multi-window
setting menu (example: 3T to 14T).

• Window: Display the statistics of the window that was defined in the [Window
Parameter Setting] menu or the [Summation] window.

When Window is selected while
using the multi-window function or
when using single window

When ALL is selected while using the
multi-window function

Statistical parameter

Statistical calculation area

Statistics

Statistical parameter

Statistics

Panorama Display ≡See 7.5 and 8.4 for the operating procedures≡

During the histogram display (only for the hardware histogram mode) or the time
variation displayed, the measured data can be displayed in the upper section of the
window (referred to as the panorama display). In addition, a section of the data that is
displayed in the panorama display (waveform in the zoom box) can be displayed in the
main window (zoom display). You can move the zoom box in the panorama window.

For time stamp mode

Displays the time variation waveform in the
zoom box in the main window

Panorama window

Statistical calculation area

Panorama display area

Main window

For hardware histogram mode

Left most value of the panorama display

Displays the time variation waveform
in the zoom box in the main window

Panorama window
Right most value of the panorama
display

Main window

1-22 IM 704310-01E

1.7 Displaying the Measured/Calculated Results

Multi-window function ≡See 8.5 for the operating procedures≡

When the distribution of the data of one measurement block is distributed over multiple
center values on the X-axis, multiple histograms are created. You can simultaneously
display all the histograms in the main window. However, you can also set multiple
windows and display each histogram in its own window and observe it in detail. The
function that allows for the setting of multiple windows and the display of the histogram of
each window is called the multi-window function. Up to 16 arbitrary sized windows can
be set.
By using this function in conjunction with the panorama display, you can easily see which
histogram among the various windows is being displayed or set.

Displays the 3T window in the main window
(Set the window size and etc. in the screen
shown on the right)

Main window

Select multi-window

Display area of each window

1

Functions

Number of windows

Summation display

The histograms (enclosed by the X1 and X2 markers) of all windows that have been set
with the multi-window function can be summed and displayed in one window. The center
values of the X-axis of the histogram of each window are aligned and the frequencies of
each bin are summed.
Only the histograms in the area enclosed by the markers are summed.
You can compare the data distribution between each histogram and calculate the
statistics of all histograms at once.

Statistics of
the summed
histogram

Histogram of
the sum of all
windows

Calculates the
statistics on the
checked
parameters.

Sum

1-23IM 704310-01E

1.7 Displaying the Measured/Calculated Results

Auto window function ≡See 8.5 for the operating procedures≡

This function is used to measure the signal of several RLL (Run Length Limited) symbols
for which the data rate is unknown. The clock period T is measured, and the X-axis
values are automatically set.
The following modulation methods are supported:

• EFM modulation

• EFM+ modulation

• 1-7 modulation
There are two methods of automatic setting.

• Measured T: Apply the input signal to CHA and the read-out clock signal to CHB. The
value of T is measured from the period of the clock signal.

• Estimated T: The value of T is estimated from the frequency distribution of the input
signal and the modulation method. This is used when the clock signal
cannot be inputted.

Select the method of automated measurement

Auto window

Select the modulation method

Automatically configures the T value and X-axis values of each window

Scaling Function ≡See 7.7 and 8.8 for the operating procedures≡

To display the measured data, various values must be set such as the minimum value or
the center value of the X-axis, the X-axis span, the center or the maximum value of the
Y-axis, and the Y-axis span.
This instrument has auto scaling in which the X-axis and Y-axis parameters are
automatically set according to the data. It also has manual scaling in which the X-axis
and Y-axis parameters can be set arbitrarily.

For time variation display

X-axis min. value

Y-axis center value

Y-axis span

X-axis span

For histogram display

Y-axis max. value

X-axis center value

X-axis span

1-24 IM 704310-01E

1.8 Other Functions

External Signal Input/Output ≡See chapter 6 and 13.3 for the operating procedures≡

Input/output terminals (BNC) for exchanging signals with external devices are provided
on the front and rear panels. For the locations of the terminals, see section 2.1 “Front
Panel” and 2.2 “Rear Panel.”

Reference input

The instrument has an internal reference clock used for making measurements.
However, a 10-MHz external signal can be applied to the REFERENCE IN terminal on
the rear panel and can be used as the reference clock instead.

Reference output

The internal reference clock signal or the externally applied reference clock signal is
passed through a 10-MHz band-pass filter and continuously output from the
REFERENCE OUT terminal.

Monitor output

The signal applied to the input terminal is voltage divided to approximately half its value
and output from this terminal.
This signal can be used to check the waveform when phase correcting a probe. Which
channel’s input signal is output varies depending on the measurement function.

1

Functions

External arming input/inhibit input

These signals are used to externally control the measurement functions of the
instrument. The external arming input terminal is shared with the external gate input
terminal. For the functions of the external arming or inhibit input signal, see section 1.5
“Acquisition Conditions for the Input Signal Being Measured.”

Communication ≡See the “GP-IB Interface User’s Manual” (IM704310-12E).≡

The GP-IB Interface comes standard with the instrument. The measured data can be
transferred to a PC for analysis or an external controller can be used to control the
instrument.

Storing and Recalling Setup Information

≡See chapter 10 for the operating procedures≡

Up to 10 sets of setup information can be stored in the internal non-volatile memory. The
stored information can also be recalled to set up the instrument. This function is useful
when the same setup is used often.

Saving and Loading Data from Floppy Disks, the Internal Hard Disk, and External SCSI Devices ≡See chapter 11 for the operating procedures≡

The floppy disk (FD) drive comes standard with the instrument. An internal hard disk can
be installed as an option.
The setup information or measured data can be stored and loaded whenever it is
necessary. You can also save an image of the screen in TIFF, BMP, or PostScript
format. You can create reports by pasting the screen image data to a document created
using a word processor.

Initialization of Setup Information ≡See chapter 13 for the operating procedures≡

The setup information can be reset to their factory default settings.

1-25IM 704310-01E

1.8 Other Functions

Calibration ≡See 13.2 for the operating procedures≡

Using the internal calibration signal, the offset voltage of the input amplifier and the
conversion factors of the time and voltage converters can be calibrated. Calibrate the
instrument when the ambient environment (temperature and humidity) changes
drastically.

Beep and Click Sounds ≡See 13.5 for the operating procedures≡

A beep sound is heard when an error occurs. You can turn OFF this beep sound. You
can also select to turn ON or OFF the click sound that is heard when the rotary knob is
turned.

Error Logging ≡See 14.3 for the operating procedures≡

When a data error such as a data overflow or a communication error occurs, a mark is
displayed in the upper right corner of the screen. In such instance, the error message is
logged. You can review these messages later.

Self-test ≡See 14.4 for the operating procedures≡

If you are in doubt as to whether the instrument has malfunctioned, you can run a self­test before contacting a YOKOGAWA dealer. You can run checks on the circuit board,
the keys, the display, and other functions.

Inter-symbol Interference Analysis Function (Option)

≡See chapter 9 for the operating procedures≡

The data around the spaces and marks of the specified condition can be extracted. The
data can be displayed in a histogram format or their statistics can be calculated. In
addition, the histograms and statistics of all marks and spaces of the measured data can
be displayed at the same time.
Note that inter-symbol interference analysis can only be performed on pulse width
measurements in the time stamp mode when the polarity setting is

Analysis Example (Extracting the mark data before the 3T space)

Space

Mark Mark

3T

11T 11T 14T 7T

Trigger

Extract

Space Space Space

Mark

3T 3T 3T6T

Trigger Trigger

Extract Extract

Mark Mark

.

Histogram display
of all mark data

Histogram display of
extracted mark data

Statistics of the extracted mark data

Statistics of all mark data

1-26 IM 704310-01E

Chapter 2 Names and Uses of Parts

2.1 Front Panel

MODE key: Select the sampling mode (Section 5.1).

FUNCTION key: Select the measurement function (Section 5.2 to 5.4).
SAMPLE key: Set gate, block sampling, arming, inhibit, and reference clock (Chapter 6).
INPUT key: Set input coupling, input impedance, and trigger mode (Section 6.6, 6.7).
DISPLAY key: Set the display format, calculation, and multi-window (Chapter 7).
SCALE key: Set the manual scaling (Section 7.7, 8.8).
MARKER key: Set the read-out marker (Section 7.8, 8.9).
UTITLITY key: Initialize setup, store and recall from internal memory, etc (Chapter 10, 13).
INITIALIZE key: Initialize setup (Section 13.1).
FILE key: Save and load data from a medium (Chapter 11).
AUTO SCALE key: Execute auto scaling (Section 7.7, 8.8).
COPY key: Copy to the specified device (Chapter 12).
LOCAL key: Release remote mode.
COPY MENU key: Set copy (Chapter 12).

25ps resolution 43MS/s
TIME INTERVAL ANALYZER

2

Names and Uses of Parts

Eject button

Eject floppy disk
(Section 11.1)

Floppy disk drive

Access indicator

MODE

DISPLAY

LOCAL
AUTO

SCALE

POWER

Power switch

(Section 3.4)

ESC

FUNCTION

SCALE

SINGLE

SAMPLE

INPUT

INITIALIZE

FILE

MARKER UTI LITY

COPY MENU

SHIFT

COPY

START/ST OP

AB

CH

789

456

123

0

CH

50Ω≤5Vrms 1MΩ≤40Vpk 1MΩ≤40Vpk

CHA/CHB input indicator

Blinks when input signal is being applied and the trigger is activated

CHA/CHB input terminal

Connect input signal cables (Section 3.5)

START/STOP key

Start/stop continuous measurement (Section 4.1)

SINGLE key

Carry out one measurement (Section 4.1).

n

µ

m

sec/V/%

ENTER

EXT ARM/ EXT GATE

R

Numerical keys

ESC key

Clears soft key
menu

Soft keys

S

E

T

L

E

S

S

E

C

T

RESET key

(Section 4.3)

SELECT key

(Section 4.3)

Rotary knob

Set numbers,
move markers,
select files, etc
(Section 4.3).

Arrow keys

INHIBIT

Move across digits
when setting
numerical values,
backspace
(Section 4.2)

Inhibit input terminal
External arming input

terminal (shared with
the external gate
input terminal)

2-1IM 704310-01E

2.2 Rear Panel

Adjustment hole for the reference clock frequency

Used to adjust the time base (Section 14.5).

Reference input terminal

Inputs external reference clock (Section 6.7).

Reference output terminal

Outputs reference clock (Section 6.7).

CHA/CHB monitor output terminal

Outputs input signals (section 13.3)

Do not operate without reading
In user`s manual safety precautions.

REFERENCE

ADJUST

GP-IB (IEEE488)

WARNING

Protect the Instrument from vibration
or shock when power is ON
(especially for internal hard disk type).

REFERENCE

IN

10MHz 1Vp-p 10MHz 1Vp-p

OUT

CAUTION

MONITOR OUT

CH

A

(50Ω) (50Ω)

100-120V AC

200VA MAX 50/60Hz
FUSE 250V T 3A

MODEL
SUFFIX
NO.

Made inJapan

CH

Warning plate

(Page 4, Section 3.1)

B

SCSI

SCSI connector
(option)

Connect SCSI
devices
(Section 11.3).

Power cord
connector

Connect the
power supply
(Section 3.3)

Name plate

(Page2)

Vent holes

GP-IB connector

Connect to external device for communication
See the GP-IB Interface User’s Manual (IM704310-12E)

2-2 IM 704310-01E

2.3 Screen Display

11. Soft key menu

1. Setup
information

2. Comments

3. Date and time

9. Read out value

8. X-axis width

10. Center value
of the X-axis

6. Panorama

display

7. Statistics

display

12. Y-axis
maximum
value

13. Zoom box

5. Busy icon

4. System icon

1. Setup information

Displays the conditions for measuring the data (sampling mode, measurement
function, etc.).

2

Names and Uses of Parts

2. Comments

Displays the comment that is added to the screen image data when they are printed
such as on the internal printer.

3. Date and time (See section 3.7)

4. System icon

Displayed when there is a message or when the system is abnormal.

: Displayed when there is a error message or a warning message (see

section 14.3).

: Displayed when the lithium battery is dead or the system is abnormal.

Perform the self-test when this icon is displayed (see section 14.4).

5. Busy icon

Displayed during the following operations.

: Blinks while accessing a medium.
: Blinks while printing to the internal printer.
: Blinks while processing data.
: Blinks while detecting SCSI devices.

6. Panorama display (see sections 7.5 and 8.4)

7. Statistics display

The statistics can be displayed with the histogram or the time variation display.

8. X-axis width (X Span)

You can set the window range to display.

2-3IM 704310-01E

2.3 Screen Display

9. Read out value

Displays the read-out values of the X1 and X2 markers.

10.Center value of the X-axis

You can set the center value of the X-axis of the histogram display.

11.Soft key menu

Corresponds to the soft key on the front panel.

12.Y-axis maximum value

You can set this value for the log scale and linear scale.

13.Zoom box

The waveform in the zoom box is displayed zoomed in the main window.

2-4 IM 704310-01E

Chapter 3 Before Starting Measurements

3.1 Precautions on the Use of the instrument

Safety Precautions

• If you are using this instrument for the first time, make sure to thoroughly read the
“Safety Precautions” given on page 4.

• Do not remove the cover from the instrument
Some sections inside the instrument have high voltages that are extremely
dangerous. For internal inspection or adjustment, contact your nearest YOKOGAWA
dealer.

• Never continue to use the instrument if there are any symptoms of trouble such as
strange smells or smoke coming from the instrument. In such cases, immediately turn
OFF the power and unplug the power cord. Then, contact your nearest YOKOGAWA
dealer.

• If the following error message is displayed, immediately turn OFF the power. The
cooling fan has stopped. From the rear panel, check for and remove any foreign
object that may be obstructing the cooling fan. If the same error message appears
when you turn ON the power switch again, it is probably a malfunction. In this case,
contact your nearest YOKOGAWA dealer.

3

Before Starting Measurements

• Nothing should be placed on top of the power cord. The power cord should also be
kept away from any heat sources. When unplugging the power cord from the outlet,
never pull the cord itself. Always hold the plug and pull it. If the power cord is
damaged, contact your dealer for replacement. Refer to page 2 for the part number
when placing an order.

3-1IM 704310-01E

3.1 Precautions on the Use of the instrument

General Handling Precautions

• Never place any objects containing water on top of the instrument. This may cause
problems.

• Do not apply shock or vibration to the instrument. It can lead to malfunction. Take
extra care when dealing with the internal floppy disk drive and the internal hard disk
(option), because they are prone to shock and vibrations. In addition, applying shock
to the input terminal or the connected cable can cause electrical noise to enter the
instrument.

• Do not bring charged objects near the input/output terminals. This can damage the
instrument.

• When the instrument is not being used for an extended period of time, unplug the
power cord from the outlet.

• When carrying the instrument, be sure to first disconnect the power and measurement
cables. The instrument weighs 5 kg. To carry the instrument, use the handle as
shown in the figure below, and move it carefully.

• Be careful not to scratch the surface of the LCD with sharp objects. It can lead to
malfunction.

• When cleaning the case or the operation panel, first remove the power cord from the
outlet. Then, wipe with a dry, soft cloth. Do not use volatile chemicals since this might
cause discoloring and deformation.

3-2 IM 704310-01E

3.2 Installing the Instrument

WARNING

To avoid the possibility of fire, never use the instrument with the rear side facing
down, as the cooling vents will be obstructed. Placing the instrument with the rear
side down can cause a fire when the instrument malfunctions. If you must use the
instrument in this position, place a metal plate or a flame-resistive barrier (grade
UL94-1 or higher) beneath the instrument.

Installation condition

Install the instrument in a place that meets the following conditions.

Ambient temperature and humidity

Use the instrument in the following environment.
Ambient temperature: 5 to 40°C
For highly accurate measurements, the temperature should be 23±2°C.
Ambient humidity: 20 to 80%RH (no condensation)
For highly accurate measurements, the humidity should be 50±10%.

3

Before Starting Measurements

Note

Internal condensation may occur if the instrument is moved to another place where both the
ambient temperature and humidity are higher, or if the temperature changes rapidly. In this
case, let the instrument adjust to the new environment for at least one hour before using the
instrument.

Well-ventilated location

Vent holes are located on the top and bottom of the instrument. In addition, vent holes
for the cooling fan are located on the rear. To prevent internal overheating, allow enough
space around the instrument (see the figure below) and do not block the vent holes.

10cm

5cm

5cm

10cm

3-3IM 704310-01E

3.2 Installing the Instrument

Installation position

Do not install the instrument in the following places:

In direct sunlight or near heat sources.
Near high voltage equipment or power lines.
Where an excessive amount of soot, steam, dust, or corrosive gases are present.
Near strong magnetic field sources.
Where the level of mechanical vibration is high.
In an unstable place.

Place the instrument in a horizontal position or inclined position using the stand as
shown in the figure below. When using the stand, pull it forward until it is vertical to the
bottom side of the instrument and lock it. If you are placing the instrument on a slippery
surface, attach rubber feet (two pieces, included in the package) on the rear feet.
If you are not using the stand, return it to the original position while pressing it inward.

12°

Rack Mounting

Rack mount kits are sold separately.
For mounting instructions, see the instruction manual that is supplied with the kit.

Name Model Description

Rack mount kit 751533-E6 For EIA single mount
Rack mount kit 751534-E6 For EIA dual mount
Rack mount kit 751533-J6 For JIS single mount
Rack mount kit 751534-J6 For JIS dual mount

3-4 IM 704310-01E

3.3 Connecting the Power Cord

Before connecting the power

Follow the warnings below to avoid electric shock and damage to the instrument.

Connecting Procedure

1. Check that the power switch on the front panel is OFF.

2. Connect the plug of the accessory power cord to the power connector on the rear

3. Plug the other end of the power cord into a power outlet that satisfies the conditions

WARNING

• Connect the power cord only after confirming that the voltage of the power
supply matches the rated electric power voltage for the instrument.

• Connect the power cord after checking that the power switch of the instrument is
turned OFF.

• To prevent electric shock or fire, always use the power cord supplied by
YOKOGAWA.

• Always use protective grounding to prevent electric shock. Connect the power
cord of the instrument to a three-pole power outlet that has a protective
grounding terminal.

• Never use an extension cord that does not have protective grounding, otherwise
the protection function will be compromised.

panel of the instrument.

below. The AC outlet must be a three-pole type that has a protective grounding
terminal.

3

Before Starting Measurements

Item Suffix-1 Suffix-5

Rated supply voltage 100 to 120 VAC 200 to 240 VAC
Permitted supply voltage range 90 to 132 VAC 180 to 264 VAC
Rated supply voltage frequency 50/60 Hz 50/60Hz
Permitted supply voltage frequency range 48 to 63 Hz 48 to 63 Hz
Maximum power consumption 200 VA 200 VA

3-5IM 704310-01E

3.4 Turning the Power Switch ON/OFF

Points to Check before Turning ON the Power

Is the instrument properly installed? See section 3.2 “Installing the Instrument.”
Is the power cord properly connected? See section 3.3 “Connecting the Power Cord.”

Location of the Power Switch and ON/OFF Operation

The power switch is located on the lower left corner of the front panel. To turn the power
ON, press the switch once. To turn the power OFF, press it again.

OFF ON

Power Up Operation

When the power is turned ON, the instrument executes the following initialization checks.
The front operation panel is disabled during the check. When the initialization
completes, the display format screen (the screen that is displayed when the DISPLAY
key is pressed) appears.

• ROM Check • SRAM Check

• DRAM Check • SRAM Cal Check : Calibration data check

• Device Check: Internal hardware check

Note

If the instrument fails to power up as described, turn OFF the power switch and check the
following points.

• Is the power cord securely connected?

• Is the correct voltage coming to the power outlet? See section 3.3.
If the instrument still fails to power up after checking these points, the instrument probably
has malfunctioned. Contact your nearest YOKOGAWA dealer.

For Making Accurate Measurements

Under the installation conditions described in 3.2, turn ON the power switch and allow
the instrument to warm up for at least 30 minutes before starting measurements.

Shut Down Operation

When the power switch is turned OFF, the setup information is retained, but the
measured data are not. Make sure to save important data to the floppy disk before
turning OFF the power.

Note

The lithium battery that is used to retain information has a finite life. When the battery
approaches the end of its life, the instrument begins to operate abnormally such as indicating
an incorrect date and time or failing to save or load measured data. If you see these
symptoms, please perform the self-test according to “14.4 Performing a Self-test.” If the “Low
Battery” warning message is displayed, the lithium battery must be replaced immediately.
Because the batteries cannot be replaced by the user, contact your nearest YOKOGAWA
dealer.

3-6 IM 704310-01E

3.5 Connecting Cables and Probes

Location of the Input Terminals

The input terminals are located on the lower section of the front panel. Connect a cable
with a BNC connector or a probe.

AB

Input Specifications

POWER

CH

50Ω≤5Vrms 1MΩ≤40Vpk

Connector type : BNC
Number of channels : 2
Input impedance : 50 Ω/1 MΩ, 20 pF(Typical value*)
Maximum input voltage

• When the input impedance is 50 Ω : 5Vrms

• When the input impedance is 1 MΩ:

• 40 V (DC+ACpeak) when DC≤input frequency ≤100 kHz

• {3.5/f+5}V(DC+ACpeak) when 100 kHz≤ input frequency ≤200 MHz, where f is a
frequency in MHz.

Ground : Connect to the case’s ground

CH

3

Before Starting Measurements

* Typical values represent typical or average values. They are not strictly guaranteed.

CAUTION

Do not apply a voltage exceeding the maximum input voltage to the input terminals.
It can damage the input section.

Note

If you are using the probe for the first time, perform phase correction according to “3.6
Calibrating the Probe (Performing Phase Correction).” If the probe is not calibrated, the gain
will not be constant across different frequencies and proper measurements cannot be made.
Perform phase correction for each channel.

3-7IM 704310-01E

3.6 Calibrating the Probe (Performing Phase Correction)

Equipment Required

Prepare the following equipment

Calibration signal

Frequency : 1 kHz
Voltage (amplitude) : 1 Vp-p
Waveform type : Square wave
Output impedance : 1 MΩ
Recommended signal : CAL signal of YOKOGAWA DL1500 Series Digital

Oscilloscope

Waveform monitor

Frequency characteristics : DC to 200 MHz(–3 dB attenuation point)
Input coupling : DC
Input impedance : Connect a 50 Ω terminator to the input terminal of the

waveform monitor.

Recommended device : YOKOGAWA DL1500 Series Digital Oscilloscope +50 Ω

terminator (YOKOGAWA 700976)

The following section describes the connection and operating procedures when the
recommended signal and device are used.

Connecting Devices

CAUTION

• Do not apply a voltage exceeding the maximum input voltage to the input
terminals. It can damage the input section.

• Do not apply external voltage to the CAL signal output terminal of the DL1500
Series or to the monitor output terminal of this instrument. It can damage the
internal circuitry.

Check that this instrument and the DL1500 Series Oscilloscopes are turned OFF. Then,
connect them as shown below.

1. Use a BNC cable to connect the monitor output terminal on the rear panel of the
instrument (for CHA and CHB) and the input terminal of the DL1500 Series
oscilloscope.

2. Connect the BNC connector of the probe that you are calibrating to the input terminal
of the instrument.

3. Connect the other end of the probe to the CAL signal output terminal of the DL1500
Series oscilloscope, and the grounding wire to the functional grounding terminal.

MONITOR OUT terminal

BNC cable

DL1540

TA520

50Ω terminator

Input terminal

CAL signal output terminal

Phase correction hole

3-8 IM 704310-01E

Function grounding terminal

Procedure

Explanation

3.6 Calibrating the Probe (Performing Phase Correction)

1. Turn ON this instrument and the DL1500 Series oscilloscope.

2. Set the waveform acquisition conditions on the DL1500 Series oscilloscope so that
approximately two periods of the waveform are displayed clearly on the screen.
For the procedures, see the User’s Manual for the DL1500 Series.

3. Insert a screwdriver into the probe’s phase correction hole and turn the variable
capacitor so that the displayed waveform on the monitor becomes a proper square
wave (see explanation).

Necessity of probe phase correction

If the input capacitance of the probe is not within the appropriate range, the gain will not
be constant across different frequencies and proper waveforms cannot be input to the
instrument. However, the input capacitance of each probe is not necessarily the same.
Thus, a variable capacitor (trimmer) is attached to the probe for making adjustments.
This adjustment is called phase correction.
Perform phase correction on all probes that are to be used for the first time. Since the
appropriate input capacitance varies for different channels, phase correction must also
be performed when changing channels.

Calibration signal

Waveform type : Square wave
Frequency : 1 kHz
Voltage : 1 Vp-p

3

Before Starting Measurements

Waveform differences due to probe’s phase correction

Correct waveform Over-compensated (the gain

at the high frequency region
is too large)

Under-compensated (the
gain at the high frequency
region is too small)

3-9IM 704310-01E

3.7 Setting the Date and Time

Procedure

1. Press the UTILITIY key to display the Utility menu.

2. Press the [Config] soft key to display the Configuration menu.

ESC

Setting the date

3. Press the [Date] soft key to display the Date menu.

ESC

4. Press the [Year], [Month], and [Day] soft keys, and set the date with the rotary
knob.

5. Pressing the [Set] soft key updates the date.

ESC

Setting the time

3. Press the [Time] soft key to display the Time menu.

ESC

4. Press the [Hour] and [Minute] soft keys, and set the time with the rotary knob.

5. Pressing the [Set] soft key updates the time.

ESC

3-10 IM 704310-01E

Explanation

3.7 Setting the Date and Time

Setting the date

Set the year, month, and day.

• Year
Selectable range: 1998 to 2047

• Month
Selectable range: 1 to 12

•Day
Selectable range: 1 to 31

Setting the time

Set the hour and minute.

• Hour
Selectable range: 0 to 23

• Minute
Selectable range: 0 to 59
The seconds are displayed on the screen, but they cannot be set. The seconds will
be set to 00 s when the [Set] soft key is pressed.

Location of the date and time displays

The date and time are displayed at the upper right section of the screen.

3

Before Starting Measurements

3-11IM 704310-01E

Chapter 4 Basic Operations

4.1 Starting and Stopping the Acquisition of an Input Signal

Procedure

Measurement indicator

SINGLE STAR T/STOP

When measuring continuously

• Starting the measurement
Press the START/STOP key to start the measurement. The measurement indicator
lights.

• Stopping the measurement
Press the START/STOP key to stop the measurement. The measurement indicator
turns off.

When measuring once

Press the SINGLE key. The measurement stops automatically after making one
measurement. The measurement indicator lights while the measurement is in progress
and turns off when the measurement completes.

4

Basic Operations

Explanation

Continuous measurement

Once the measurement is started, it continues until the START/STOP key is pressed
again.

Single measurement

A single measurement is made every time the SINGLE key is pressed.

Note

• One set of measurements is called one block (see section 1.5). However, when using block

sampling, [1 block x the number of blocks] is one set of measurements.

• If the START/STOP key is pressed in the middle of a measurement block and the

measurement is aborted, the measured data are acquired up to that point and the
measurement stops.

• There are input indicators for CHA and CHB above the input terminals. If this indicator is not

blinking, the signal may not be entering the instrument. Check the trigger level setting (see
section 6.6), the cable connection, and the signal source. If the signal is properly entering the
input terminal of the instrument, but the CHA/CHB input indicator is not blinking, then there
may be a malfunction. Contact your nearest YOKOGAWA dealer to have it fixed.

4-1IM 704310-01E

4.2 Setting Numerical Values and Strings

Procedure

Entering a numerical value using the numerical keys

If the
numerical value.

1. Press the numerical keys to enter a numerical value.

2. Pressing a unit key or ENTER key confirms the value.

Canceling the numerical value set with the numerical keys

2. Pressing the RESET key before the value is confirmed cancels the value that is

Setting a numerical value using the rotary knob

If the
set the value.

1. Move the cursor to the desired digit using the arrow keys (

2. Turn the rotary knob to select the desired value.

mark is displayed on the soft key, you can use the numerical keys to set the

This box appears when entering values with the numerical keys.

being set.

mark or the mark is displayed on the soft key, you can use the rotary knob to

).

Setting a string (keyboard operation)

1. Turn the rotary knob to highlight the desired character.
If a string is already entered, such as a file name, move the cursor to the desired
position using the arrow keys.

2. Pressing the SELECT key, confirms the input character.

3. Repeat steps 1 and 2 to enter all the characters.

4. Moving the cursor to [ENT] on the keyboard and pressing the SELECT key
confirms the string and the keyboard disappears.

String input area

4-2 IM 704310-01E

Explanation

4.2 Setting Numerical Values and Strings

Setting a numerical value using the numerical keys

If you press another key before pressing a unit key or the ENTER key, the value that you
were setting is not confirmed and it is set back to the value the existed before.
You can cancel a value by pressing the RESET key before the value is confirmed.

Setting a numerical value using the rotary knob

Only numerical values can be set with the rotary knob. You cannot set the unit with the
rotary knob as you can with the numerical keys.
If the value of the digit at the cursor position is increased using the rotary knob, the value
is carried over to the next digit. If the value is decreased, the opposite occurs.

Setting the string

For file names and comments, the keyboard that pops up on the screen is used to set
the string.

• Keys other than the character keys on the keyboard

DEL : Deletes the character immediately before the cursor.
INS : Switches the insert/overwrite mode. During the insert mode, the INSERT

indicator on the keyboard lights.
CLR : Clears all characters that are displayed.
SPACE: Enters one space.
ENT : Confirms the string that is displayed.
CAPS : Switches the case of the input character.

• The number and types of characters that can be used on file names and
comments.

Number of characters Allowed characters

File name 1 to 8 characters 0 to 9, A to Z, – (minus), %, _, (,)
Comment 0 to 25 characters All characters (includes space)

4

Basic Operations

Arrow keys

The operation varies depending on the method used to input the numerical values.

• When using the numerical keys
Operates as a backspace key.

• When using the rotary knob
Moves along the digits.

• When using the keyboard
Moves the cursor in the string input section.

Note

• You can reset the numerical values to their factory default values. For details, see section

13.1. However, be careful, because all values are reset.

When using the numerical keys

• Even if you try to set numbers beyond the resolution of each item, they are cut off.

• If you try to set a value that exceeds the maximum value or a value that falls short of the

minimum value, they are set to the maximum and minimum values, respectively.

When using the keyboard

• You can use the keyboard along with the numerical keys. The numerical keys that can be

used are as follows.
0 to 9, ., ENTER, RESET key (keyboard’s CLR operation)

• Upper and lower case letters are not distinguished for file names. Comments distinguish

them. In addition, the following five file names cannot be used due to the limitation of MS­DOS.
AUX, CON, PRN, NUL, CLOCK

• When using the GP-IB interface commands to enter a file name, the following symbols that do

not exist on the keyboard of this instrument can be used.
! # $ ‘ - ^ @ ~ { }

4-3IM 704310-01E

4.3 The Way to Look at the Soft Key Menu/Using the Rotary Knob and Select Key

The way to look at the soft key menu

: Pressing this soft key causes a menu to pop up.
: You can set the value using both the numerical keys and the rotary knob.
: You can set the value or select the setting item using the rotary knob.

Set using the numerical keys

Set using the rotary knob

Using the rotary knob and SELECT key

In a setting screen as shown below, values are set using the rotary knob and SELECT
key.

• When selecting an item

Move the cursor to the desired item using the rotary knob and press the SELECT key
to select the item.

Pop up a menu

1. Use the rotary knob
to move the cursor to
the desired item.

2. Select the item using
the SELECT key.

• When setting a numerical value

Move the cursor to the desired item using the rotary knob, and press the SELECT key
to display the numerical value input area, and enter the value using the numerical
keys.

Press the SELECT key to
display the numerical input
area, then enter the value
using numerical keys.

• When checking a box

Move the cursor to the desired item using the rotary knob, press the SELECT key to
check or uncheck the box.

ON

OFF

Using the ESC key

Press this key to exit the current menu (go back one menu).

Using the RESET key

Use this key to cancel the numerical value that was entered using the numerical keys.

4-4 IM 704310-01E

Chapter 5 Setting the Sampling Mode and Measurement Functions

5.1 Selecting the Sampling Mode

Procedure

1. Press the MODE key to display the MODE menu.

When selecting the time stamp mode

2. Press the [TimeStamp] soft key.

When selecting the hardware histogram mode

2. Press the [HardHist] soft key.

≡For a functional description, see 1.3.≡

5

Setting the Sampling Mode and Measurement Functions

Explanation

ESC

Selecting the sampling mode

Select from the following choices.

• Time stamp mode : Acquires the measured values and their time stamps to
the acquisition memory.

• Hardware histogram mode : Acquires the measured values and the frequency of
occurrence of those values to the acquisition memory.

Note

If you change the sampling mode or the measurement function, the data acquired up to that
point can no longer be displayed or analyzed. Acquire the data again, or load the data from a
file.

5-1IM 704310-01E

5.2 Setting the Period Measurement

≡For a functional description, see 1.4.≡

Procedure

1. Press the FUNCTION key to display the Function menu.

2. Press the [Function] soft key.

ESC

Selecting period measurement

3. Press the [Period] soft key.

Explanation

ESC

Selecting the channel to be measured

4. Press the [Channel] soft key and select [ChA] or [ChB].

Selecting the slope

5. Press the [Slope] soft key and select [ ↑] or [ ↓].

ESC

Measurement range

The measurement range varies depending on the sampling mode.

• For time stamp mode : 8 ns to 20 ms

• For hardware histogram mode : 8 ns to 3.2 µs

Selecting the channel to be measured

Select either CHA or CHB.

Selecting the slope

Select from the following choices.

• ↑: Measures from a rising edge to the next rising edge of the input signal.

• ↓: Measures from a falling edge to the next falling edge of the input signal.

Note

If you change the sampling mode or the measurement function, the data acquired up to that
point can no longer be displayed or analyzed. Acquire the data again, or load the data from a
file.

5-2 IM 704310-01E

5.3 Setting the Time Interval Measurement

≡For a functional description, see 1.4.≡

Procedure

1. Press the FUNCTION key to display the Function menu.

2. Press the [Function] soft key.

ESC

Selecting time interval measurement

3. Press the [TI] soft key.

5

Setting the Sampling Mode and Measurement Functions

Explanation

ESC

Selecting the slope

4. Turn the rotary knob to select the slope.

Measurement range

The measurement range varies depending on the sampling mode.

• For time stamp mode : 0 ns to 20 ms

• For hardware histogram mode: 0 ns to 3.2 µs

Selecting the slope

•

•

•

•

•

•

For the procedures related to displaying histograms for the separated data, see sections

7.1 and 8.1. For the procedures related to calculating statistics, see sections 7.6 and

8.7.

:Measures the interval from a rising edge of CHA to the first rising edge of

A B

CHB.

:Measures the interval from a rising edge of CHA to the first falling edge of

A B

CHB.

:Measures the interval from a falling edge of CHA to the first rising edge of

A B

CHB.

:Measures the interval from a falling edge of CHA to the first falling edge of

A B

CHB.

:Measures the interval from a rising or falling edge of CHA to the first rising

A B

edge of CHB.
measured data corresponding to
separated for the purpose of displaying histograms and calculating statistics.

:Measures the interval from a rising or falling edge of CHA to the first falling

A B

edge of CHB.
measured data corresponding to
separated for the purpose of displaying histograms and calculating statistics.

A B

A B

and

and

are measured alternately. In addition, the

A B

or

A B

are measured alternately. In addition the

A B

or

A B

A B

A B

, and

and

A B

A B

can be

can be

5-3IM 704310-01E

5.3 Setting the Time Interval Measurement

Example of separating the data and displaying the histogram

Select either one

Note

• Continuous measurements are possible if the period of CHA is 23 ns or more and the time
between the slope of CHB and the slope of CHA is 13 ns or more.

AB

Example

Continuously measures t2 when the
period of CHA is 23 ns or more.

Measurement

t

1

Measurement

t2

Displays A B

Displays A B
only

Measures t3 and not t2 when the
period of CHA is less than 23 ns.

Measurement

t

1

Measurement

t2

t3
CHA
CHB

23 ns

13 ns or more

CHA
CHB

23 ns or more

13 ns or more

or more

• If you change the sampling mode or the measurement function, the data acquired up to that
point can no longer be displayed or analyzed. Acquire the data again, or load the data from
the file.

5-4 IM 704310-01E

5.4 Setting the Pulse Width Measurement

≡For a functional description, see 1.4.≡

Procedure

1. Press the FUNCTION key to display the Function menu.

2. Press the [Function] soft key.

ESC

Selecting pulse width measurement

3. Press the [Pulse Width] soft key.

5

Setting the Sampling Mode and Measurement Functions

ESC

Selecting the channel to be measured

4. Press the [Channel] soft key and select [ChA] or [ChB].

ESC

Selecting the polarity

5. Turn the rotary knob to select the polarity.

5-5IM 704310-01E

5.4 Setting the Pulse Width Measurement

Explanation

Measurement range

The measurement range varies depending on the sampling mode.

• For time stamp mode : 8 ns to 20 ms

• For hardware histogram mode : 8 ns to 3.2 µs

Selecting the channel to be measured

Select either CHA or CHB.

Selecting the polarity

Select from the following choices.

•

: Measures the positive side (from a rising edge to the next falling edge).

• : Measures the negative side (from a falling edge to the next rising edge).

• : Measures the positive and negative sides alternately. In addition the measured
data corresponding to
of displaying histograms. For details see sections 7.1 and 8.1.

Example of separating the data and displaying the histogram

Select either one

or and can be separated for the purpose

Displays

Displays
only

Note

If you change the sampling mode or the measurement function, the data acquired up to that
point can no longer be displayed or analyzed. Acquire the data again, or load the data from a
file.

5-6 IM 704310-01E

Chapter 6 Setting the Acquisition Conditions of the Measurement Input Signal

6.1 Setting the Gate

≡For a functional description, see 1.5.≡

Procedure

1. Press the SAMPLE key to display the Sample menu.

2. Press the [GateMode] soft key to display the Gate Mode menu.

ESC

6

Setting the Acquisition Conditions of the Measurement Input Signal

Selecting the gate mode

3. Press the soft key corresponding to the desired gate mode.

ESC

When event gate (Event) is selected

4. Use the rotary knob or the numerical keys to set the number of events (Event
Size).

ESC

When time gate (Time) is selected

4. Use the rotary knob or the numerical keys to set the gate time.

ESC

When external gate (External) is selected

4. Press the [Polarity] soft key to select the polarity.

ESC

6-1IM 704310-01E

6.1 Setting the Gate

Explanation

Selecting the gate mode

Select from the following choices.

• Event : Set the size (range) of a measurement block by specifying the number of
events.

• Time : Set the size (range) of a measurement block by specifying a period of time.

• External : Set the size (range) of a measurement block using the external gate.
Since the external gate input terminal is shared with the external arming
input terminal, selecting external gate will prevent the use of external
arming.

When [External] is selected

Apply a signal to the terminal marked [EXT ARM/EXT GATE] on the front panel. (The
terminal is shared with external arming.)

• Input impedance : 1 MΩ(Typical value*)

• Input coupling : DC

• Gate level : Select TTL (1.4 V), TTL/10 (0.14 V), or 0 V

• Maximum input voltage : 40 V (DC+ACpeak)

• Minimum input pulse width : 30 ns

• Setup time : 50 ns (For the gate to become effective, the gate signal

must arrive at least 50 ns earlier than the measurement
signal.)

* Typical values represent typical or average values. They are not strictly guaranteed.

External gate (shared with external arming) input circuit

+5 V

EXT ARM/EXT GATE

(External gate
input terminal)

Buffer amplifier

500 kΩ

–5 V

500 kΩ

CAUTION

Applying a voltage exceeding the maximum input voltage to the external gate input
terminals can damage the input section.

Selectable range for the number of events

The number varies depending on the sampling mode. This value can only be set when
the gate mode is set to event gate.

• During the time stamp mode : 1 to 512,000

• During the hardware histogram mode : 1 to 10

9

Note

• After arming, if the maximum sampling time elapses before the specified number of events is
reached, then the measurement block stops at that point.

• The gate level is set using the INPUT key.

6-2 IM 704310-01E

6.1 Setting the Gate

Selectable range for the gate time

The selectable range is as follows. This value can only be set when the gate mode is set
to time gate.
1 µ s to 10 s (in 100 ns steps)

Note

If the number of events (samples) reaches the maximum number of events for the appropriate
sampling mode before the specified gate time elapses, then the measurement block stops at
that point.

Selecting the polarity

Select from the following choices. It is set only when the gate mode is set to external
gate.

•

•

: Measures while a positive signal is being applied to the external gate input

terminal (EXT ARM/EXT GATE)

: Measures while a negative signal is being applied to the external gate input

terminal (EXT ARM/EXT GATE)

Note

• Even if the external gate is continuously open for a long period of time, the measurement
block ends when the number of events reaches the maximum sampling size for the
appropriate sampling mode or when the maximum sampling time elapses.

• When external gate is selected, block sampling is turned OFF and arming is set to Auto.

6

Setting the Acquisition Conditions of the Measurement Input Signal

6-3IM 704310-01E

6.2 Setting the Sampling Interval

Procedure

1. Press the SAMPLE key to display the Sample menu.

Selecting the sampling interval

2. Press the [Interval] soft key.
Use the rotary knob or the numerical keys to set the sampling interval.

≡For a functional description, see 1.5.≡

Sampling interval

Explanation

ESC

The sampling interval is set only during the time stamp mode.

Setting the sampling interval

Select from the following choices. During the hardware histogram mode, it is fixed to 0
µ s and no menu is displayed.
0 µ s, 1 µs to 1 s (in 1 µ s steps)
The sampling interval when 0 µ s is selected is approximately 23 ns.

Note

If the sampling interval is changed, the time resolution of the time stamp also changes as
follows:

Sampling Interval Time Resolution of the Time Stamp

0 µs 100 ns
1 µs to 1 s 1 µs

6-4 IM 704310-01E

6.3 Performing Block Sampling

Procedure

1. Press the SAMPLE key to display the Sample menu.

2. Press the [Block] soft key to display the Block Sample menu.

ESC

Performing block sampling

3. Press the [Mode] soft key and select [ON].

≡For a functional description, see 1.5.≡

6

Setting the Acquisition Conditions of the Measurement Input Signal

Set the number of blocks

4. Press the [BlockSize] soft key.
Use the rotary knob or the numerical keys to set the number of measurement
blocks.

Select the pause mode

5. Press the [RestMode] soft key.
Turn the rotary knob to select the pause mode from [OFF], [Time], and [Event].

ESC

• When the pause mode is set to Time

6. Press the [RestTime] soft key.
Use the rotary knob or the numerical keys to set the pause time.

ESC

• When the pause mode is set to Event

6. Press the [RestEvent] soft key.
Use the rotary knob or the numerical keys to set the number of events to pause.

ESC

6-5IM 704310-01E

6.3 Performing Block Sampling

Explanation

The display format and analysis method of the block sampled data differ for the time
stamp mode and the hardware histogram mode.

Time stamp mode

The instrument retains time stamps and measured values for each measurement block.
You can display the time variation display, list display, and calculate statistics on each
measurement block.

Hardware histogram mode

The instrument retains the measured values and the frequency of occurrence of those
values by summing the data of all measurement blocks. You can not use the list display
or calculate statistics on each measurement block.

Setting the number of blocks

• Time stamp mode : 1 to 100

• Hardware histogram mode : 1 to 1000

Setting the pause time

Select from the following choices.
OFF : No pause time
RestTime: Set the pause time in units of time

RestEvent : Set the pause time by specifying the number of events

1.0 µs to 1.0000000 s (in 100 ns steps)

1 to 1000000

Note

• Block sampling is not possible when external gate is selected or when the inter-symbolic
interference analysis function is being used.

• When the pause time is set using the number of events and the pause time is less than 500
ns, it is set to 500 ns.

6-6 IM 704310-01E

6.4 Setting the Arming Source, Slope, and Delay

≡For a functional description, see 1.5.≡

Procedure

1. Press the SAMPLE key to display the Sample menu.

Displaying the arming menu

2. Press the [Arming] soft key to display the Arming menu. When external gate is
selected the arming menu is not displayed (the ARMING soft key is not displayed).

ESC

6

Setting the Acquisition Conditions of the Measurement Input Signal

Selecting the arming source

3. Press the [Source] soft key and select [Auto] or [Ext].
If you select Ext (external arming) proceed to the following steps. If you select Auto
(auto arming), then the following menus will not be displayed.

Selecting the slope (for external arming only)

4. Select the [Slope] soft key to select [↑] or [↓].

ESC

6-7IM 704310-01E

6.4 Setting the Arming Source, Slope, and Delay

Selecting the type of arming delay (for external arming only)

5. Press the [DelayMode] soft key.
Turn the rotary knob to select [OFF], [Time], or [Event].

• Set the delay time (when the type of arming delay is set to Time in step 5)

6. Press the [D.Time] soft key.
Use the rotary knob or the numerical keys to set the delay time.

ESC

• Set the number of events (when the type of arming delay is set to Event in step 5)

6. Press the [D.Event] soft key.
Use the rotary knob or the numerical keys to set the number of events.

ESC

Selecting the arming level

7. Press the INPUT key to display the Input menu.

8. Press the [Setting] soft key to display the Input Setting menu.

ESC

9. Press the [Arm/Gate] soft key.

ESC

10. Turn the rotary knob to select [TTL], [TTL/10], or [0V].

6-8 IM 704310-01E

Explanation

6.4 Setting the Arming Source, Slope, and Delay

Selecting the arming source

Select from the following choices.

• Auto : Arming is activated automatically after the measurement is started.

• Ext : Arming is activated by an external arming input signal after the measurement is
started.

When [Ext] is selected

Apply a signal to the terminal (this terminal is shared with the external gate) marked
[EXT ARM/GATE IN] on the front panel.

• Input impedance : 1 MΩ (Typical value*)

• Input coupling : DC

• Arming level : Select TTL (1.4 V), TTL/10 (0.14 V), or 0 V

• Maximum input voltage : 40 V (DC+ACpeak)

• Minimum input pulse width : 30 ns

• Setup time : 50 ns (For the arming to become effective, the arming

signal must arrive at least 50 ns earlier than the
measurement signal.)

* Typical values represent typical or average values. They are not strictly guaranteed.

External arming (shared with external gate) input circuit

6

Setting the Acquisition Conditions of the Measurement Input Signal

+5 V

EXT ARM/EXT GATE

(External arming
input terminal)

Buffer amplifier

500 kΩ

–5 V

500 kΩ

CAUTION

Applying a voltage exceeding the maximum input voltage to the external arming
input terminals can damage the input section.

Selecting the slope

Select from the following choices. Select only during external arming.

• ↑: Arming occurs on the rising edge of the signal entering the external arming input

terminal.

• ↓: Arming occurs on the falling edge of the signal entering the external arming input

terminal.

6-9IM 704310-01E

6.4 Setting the Arming Source, Slope, and Delay

Selecting the type of arming delay

Select from the following choices. Select only during external arming.

• OFF : You cannot select the arming delay. Arming delay is not executed.

• Time : The measurement starts after being delaying for the specified time.

• Event : The measurement starts after being delaying for the specified number of
events.

Setting the delay time

Set the time within the following range. Set only when using the time delay.

1.0 µs to 1.0000000s (in 100 ns steps)

Setting the number of events

Set the number of events within the following range. Set only when using the event
delay.
1 to 1000000

Note

The delay event corresponds to the number of events of the input signal of the channel being
measured. However, in time interval measurements, it is the number of events of the input
signal of CHA.

Selecting the arming level

Select from the following choices.
TTL (1.4 V), TTL/10 (0.14 V), and 0 V

6-10 IM 704310-01E

6.5 Setting the Inhibit Function

Procedure

1. Press the SAMPLE key to display the Sample menu.

Selecting the polarity

2. Press the [Inhibit] soft key to select the polarity.

ESC

≡For a functional description, see 1.5.≡

6

Setting the Acquisition Conditions of the Measurement Input Signal

Selecting the inhibit level

3. Press the INPUT key to display the Input menu.

4. Press the [Setting] soft key to display the Input Setting menu.

ESC

5. Press the [Inhibit] soft key.

ESC

6. Turn the rotary knob to select [TTL], [TTL/10], or [0V].

6-11IM 704310-01E

6.5 Setting the Inhibit Function

Explanation

Selecting the polarity

Select from the following choices. The inhibit input is ineffective if it is turned [OFF].

•

•

Note

When applying the inhibit signal

Apply a signal to the terminal marked [INHIBIT] on the front panel.

• Input impedance : 1 MΩ(Typical value*)

• Input coupling : DC

• Inhibit level : Select TTL (1.4 V), TTL/10 (0.14 V), or 0 V

• Maximum input voltage : 40 V(DC+ACpeak)

• Minimum input pulse width : 30 ns

• Setup time : 50 ns (For the inhibit function to become effective, the

* Typical values represent typical or average values. They are not strictly guaranteed.

: Inhibits measurement while a positive signal is being applied to the inhibit input

terminal.

: Inhibits measurement while a negative signal is being applied to the inhibit input

terminal.

The inhibit signal is valid only within the maximum sampling time after arming activation.
Signals outside this range are invalid.

inhibit signal must arrive at least 50 ns earlier than the
measurement signal.)

Inhibit input circuit

+5V

INHIBIT

(Inhibit input
terminal)

Buffer amplifier

500 kΩ

–5V

500 kΩ

CAUTION

Applying a voltage exceeding the maximum input voltage to the inhibit input
terminals can damage the input section.

Selecting the inhibit level

Select from the following choices.
TTL (1.4 V), TTL/10 (0.14 V), and 0 V

6-12 IM 704310-01E

6.6 Setting the Input Coupling, Input Impedance,

Procedure

and T rigger

1. Press the INPUT key to display the Input menu.

Selecting the channel to set

2. Press the [Setting] soft key to display the Input Setting menu.

ESC

3. Press the [ChA] or [ChB] soft key.

≡For a functional description, see 1.5.≡

6

Setting the Acquisition Conditions of the Measurement Input Signal

ESC

Selecting the input impedance

3. Press the [Impedance] soft key to select [50 Ω] or [1 M Ω].

Selecting the input coupling

4. Press the [Coupling] soft key to select [AC] or [DC].

Selecting the trigger mode

5. Press the [Trigger] soft key.
Turn the rotary knob to select [Manual], [SingleAuto], or [RepeatAuto].

Setting the trigger level

6. Press the [Level] soft key.
Use the rotary knob or the numerical keys to set the trigger level.

ESC

6-13IM 704310-01E

6.6 Setting the Input Coupling, Input Impedance, and Trigger

Explanation

Selecting the channel to set

The input conditions of CHA and CHB are selected individually. In addition, if you
selected arming/gate or inhibit input, you can set the level.

Selecting the input impedance

Select either 50 Ω or 1 MΩ. If the input coupling is set to AC, the frequency
characteristics vary depending on the input impedance. For details, see section 15.1.

Selecting the input coupling

Select either AC or DC. The frequency characteristics vary depending on the input
coupling. For details, see section 15.1.

Selecting the trigger mode

Select from the following choices.

• Manual : Trigger using the specified trigger level (voltage).

• SingleAuto : Determines the trigger level from the value (%) specified on the first
measurement after the measurement is started.

• RepeatAuto: Determines the trigger level from the value (%) specified for each
measurement.

Setting the trigger level

Selectable range (when the trigger mode is Manual) : –5 V to +5 V (in 1

mV steps)

Selectable range (when the trigger mode is SingleAuto/RepeatAuto) : 0 to 100% (in 1%

steps)
However, if you selected Arming/Gate or Inhibit for the channel, you will select from TTL
(1.4 V), TTL/10 (0.14 V), and 0 V.

Note

The input impedance of EXT ARM/EXT GATE and INHIBIT is fixed to 1 MΩ.

6-14 IM 704310-01E

6.7 Inputting/Outputting the Reference Signal

≡For a functional description, see 1.5.≡

Procedure

Selecting the reference clock

1. Press the SAMPLE key to display the Sample menu.

2. Press the [Ref.Clock] soft key to select [Int] or [Ext].

ESC

Explanation

Connecting a BNC cable

Connect a BNC cable to the reference input/output terminal on the rear panel of the
instrument.

(Reference input
terminal)

Reference input circuit Reference output circuit

REFERENCE

IN OUT

10 MHz 1 Vp-p 10 MHz 1V p-p

(Reference output
terminal)

6

Setting the Acquisition Conditions of the Measurement Input Signal

100 pF

22 kΩ

1.5 kΩ

50 Ω 470 pF

Inputting an external reference clock signal

Apply an external reference clock signal to the reference input terminal.

• Input frequency range : 10 MHz ±10 Hz

• Input impedance : 1 kΩ or more

• Input coupling : A C

• Input level : 1 Vp-p or more

• Maximum input voltage : ±10 V

6-15IM 704310-01E

6.7 Inputting/Outputting the Reference Signal

Applying a voltage exceeding the maximum input voltage to the reference input
terminal can damage the instrument.

Outputting the reference clock signal

Outputs the reference clock signal from the reference output terminal. The selected
reference clock described in the earlier section “Selecting the reference” is constantly
output from this terminal.

• Output frequency : 10 MHz(Typical value*)

• Output impedance : 50 Ω(Typical value*)

• Output coupling : AC

• Output level : 1 Vp-p or greater, except this level applies to the case when the

* Typical values represent typical or average values. They are not strictly guaranteed.

Do not apply an external voltage to the reference output terminal. It can damage
the instrument.

CAUTION

input impedance of the receiving side is 50 Ω.

CAUTION

Selecting the reference

Select from the following choices.

• Int : Operate using the internal reference clock signal.

• Ext : Operate using the external reference clock signal.

6-16 IM 704310-01E

Chapter 7 Displaying the Measured/Calculated Results in the Time Stamp Mode

7.1 Displaying the Histogram

≡For a functional description, see 1.7.≡

Procedure

1. Press the DISPLAY key to display the Display menu.

Displaying a histogram

2. Press the [Item] soft key to display the Display Item menu.

ESC

3. Press the [Histogram] soft key.

ESC

Set the display size of the histogram

4. Press the [Style] soft key to display the Display Style menu.

ESC

5. Press the [Graph Size] soft key to select [Half] or [Full].

Set the display format

5. Press the [Statistics], [Marker], or [Overlap] soft key to select [ON] or [OFF] for
each.

ESC

7

Displaying the Measured/Calculated Results in the Time Stamp Mode

7-1IM 704310-01E

A B

A B

7.1 Displaying the Histogram

Explanation

Display size of the histogram (Graph Size)

Select from the following two choices.
Half: Displays the histogram on the left half of the screen. The right half displays the

Full : Displays the histogram on the entire screen.

Setting the display format (Style)

In addition to the histogram, you can select whether or not to display the following items.

• Statistics : Displays the statistics in the main window. The statistical parameters to be

• Marker : Displays the read-out value of the X marker. The marker is set using a

• Overlap

statistics.

displayed are set in a dialog box that appears when the [Calc/Stat] soft
key is pressed. For details, see section 7.6.

menu that is displayed when the MARKER key is pressed.

The ON/OFF setting becomes effective only for the following cases:

• Time interval measurement with the slope set to

• Pulse width measurement with the polarity set to

ON : Superimposes the histogram of the slope/polarity that is selected with the

Calculation Slope/Calculation Polarity item (displayed in orange) and the
histogram of both slopes/polarities (displayed in blue).

OFF: Displays the histogram of the slope/polarity that is selected with the Calculation

Slope/Calculation Polarity item (displayed in orange) and the histogram of both
slopes/polarities (displayed in blue) in separate windows.

The following combinations of slopes and polarities can be selected.

• Time interval measurement :

• Pulse width measurement : , ,

,

A B

,

A B

,
,

A B

A B

A B

.

or

A B

.

For the procedures related to setting the Calculation Slope/Calculation Polarity item in
the Calculation/Statistics Setting menu, see section 7.6.

7-2 IM 704310-01E

7.2 Displaying the List

Procedure

1. Press the DISPLAY key to display the Display menu.

Displaying the list

2. Press the [Item] soft key to display the Display Item menu.

≡For a functional description, see 1.7.≡

Marks the position
corresponding to
the number that is
highlighted in the
list.

ESC

3. Press the [List] soft key.

ESC

Setting the data to be displayed

4. Use the rotary knob or the numerical keys to set the number of the desired data.
The specified data is highlighted and the position of the specified number is
marked on the time variation display.

Displaying the top data

4. Press the [Top] soft key. The top data (first data) are highlighted.

Displaying the bottom data

4. Press the [Bottom] soft key. The bottom data (last data) are highlighted.

ESC

Specifying the block number (only for block sampling)

4. Press the [Block Num] soft key.
Turn the rotary knob to set the block number that you wish to list.

7

Displaying the Measured/Calculated Results in the Time Stamp Mode

ESC

7-3IM 704310-01E

7.2 Displaying the List

Explanation

Displaying the list

Displays twenty data points at a time. Taking the first measurement data to be number
one, the time stamps and measured data are displayed.
The list is displayed on the left side of the screen and the time variation is displayed
vertically on the right side.
The dotted line and
highlighted on the list.

Setting the data to list

You can set the data to be displayed.
The following methods are available to select the data.

• Specify the data number and display

• Display top data (top of the list) or bottom data (bottom of the list)

Specifying the block number

Block number is specified only when block sampling is used. The data of the specified
block number are listed. The first data of each block become the top data of the list.

mark on the time variation screen indicate the data that are

Note

If the or mark is displayed on the time variation screen, redo the scaling.

7-4 IM 704310-01E

7.3 Displaying the Time Variation

Procedure

1. Press the DISPLAY key to display the Display menu.

Displaying the time variation

2. Press the [Item] soft key to display the Display Item menu.

≡For a functional description, see 1.7.≡

ESC

3. Press the [TimeVar.] soft key.

ESC

Set the display size of the time variation

4. Press the [Style] soft key to display the Display Style menu.

5. Press the [Graph Size] soft key to select [Half] or [Full].

Selecting the display format

5. Press the [Panorama], [Statistics], or [Marker] soft key to select [ON] or [OFF] for
each.

ESC

Setting the graticule

2. Press the [Graph Param] soft key to display the Graph Parameter menu.
Press the [Grid], [Connect], or [Dot Type] soft key to set them appropriately.

7

Displaying the Measured/Calculated Results in the Time Stamp Mode

ESC

Specifying the block number (only for block sampling in which the statistical
calculation area is set to [Block])

2. Press the [Block Num] soft key.
Turn the rotary knob to set the number of the block for which you wish to display
the statistics.

7-5IM 704310-01E

7.3 Displaying the Time Variation

Explanation

The size of the time variation display (Graph Size)

Select from the following two choices.
Half: Displays the time variation on the left half of the screen. The right half displays the

Full : Displays the time variation on the entire screen.

Selecting the display format (Style)

In addition to the time variation, you can display the following items.

• Panorama : Displays a panorama display. For setting the panorama display, see

• Statistics : Displays statistics. The statistical parameters to be displayed are set in a

• Marker : Displays the read-out values of the X and Y markers. The markers are

Setting the graph (Graph Parameter)

The following items can be set.

• Grid : Turn ON/OFF the grid.

• Connect : Set whether to linearly interpolate between data points.

• Dot Type : Set the dot to [Pixel] or [Mark].

statistics.

section 7.5.

dialog box that appears when the [Calc/Stat] soft key is pressed. For
details, see section 7.6.

set using a menu that is displayed when the MARKER key is pressed.

Connect OFF

Connect ON

Dot Type:Pixel Dot Type:Mark

Specifying the block number

The block number can only be specified during block sampling when the statistical
calculation area is set to [Block]. The statistics of the specified block are displayed.

Displays the statistics of the
specified block

Specify the block to display the
statistics

7-6 IM 704310-01E

7.4 Displaying the Statistics

Procedure

1. Press the DISPLAY key to display the Display menu.

Displaying the statistics

2. Press the [Item] soft key to display the Display Item menu.

ESC

3. Press the [Statistics] soft key.

≡For a functional description, see 1.7.≡

7

Displaying the Measured/Calculated Results in the Time Stamp Mode

ESC

Selecting the items for which to calculate the statistics

4. Press the [Stat Item] soft key to select [Hist] or [T.V.].

ESC

Setting the display format (only during block sampling when the statistical
calculation area is set to [Block] and [T.V] was selected in step 4)

5. Press the [Style] soft key to select [All] or [Block].

• When [All] is selected

6. Press the [
Turn the rotary knob to scroll through the block numbers.

7. Press the [
Turn the rotary knob to scroll through the statistical parameters.

ESC

• When [Block] is selected

6. Press the [Block Num] soft key.
Turn the rotary knob to specify the number of the block you wish to display.

] soft key.

] soft key.

ESC

7-7IM 704310-01E

7.4 Displaying the Statistics

Explanation

Selecting the items for which to calculate the statistics (Stat Item)

Select from the following choices.

• Hist: Set the range over which to calculate the statistics with the measured values
and frequencies.

• T.V. : Set the range over which to calculate the statistics with the time stamps and
measured values.

Setting the display format (Style)

For data that were block sampled, if the statistical calculation area is [Block] and the item
for which to calculate the statistics is set to time variation (T.V.), then the display format
of the statistics can be selected from the following choices.

• All : Lists the statistics of all blocks. Up to four statistical parameters and up to 20

blocks can be displayed at once. Rotary knobs can be used on the [
[

] keys to scroll through the blocks and statistical parameters.

] and

• Block : Displays the statistics for each block. All statistical parameters can be

displayed at once.

Statistical parameters that are calculated

The following statistical parameters are calculated.
The items inside parentheses are displayed when [T.V.] is selected.

• Average (T.Average) • E.L.Error (None)

• Maximum (T.Maximum) • MELE (None)

• Minimum (T.Minimum) • Median (None)

• Peak-Peak (T.Peak-Peak) • Mode (None)

• σ (T.σ) • – (T.(P-P/Average))

• σ/Average (T.(σ/Average)) • – (T.RF)

• σ/T (None) • Number (T.Num)

Asterisks (*) are displayed for the statistics of the parameters that are not turned ON in
the dialog box that appears by pressing the [Calc/Stat] soft key (see section 7.5)

When the statistic item is [T.V.].

When the statistic item and format
are [T.V.] and [Block], respectively.

When the statistic item is [Hist].

When the statistic item and format are [T.V.] and
[All], respectively.

Note

[-----] is displayed when the measured data are invalid, or measured the data do not exist.

7-8 IM 704310-01E

7.5 Displaying the Panorama Display

≡For a functional description, see 1.7.≡

Procedure

1. Press the DISPLAY key to display the Display menu.

2. Press the [Item] soft key to display the Display Item menu.

ESC

3. Press the [TimeVar.] soft key.

ESC

Displaying the panorama

4. Press the [Style] soft key to display the Display Style menu and press the
[Panorama] soft key to select [ON].

ESC

Setting the range to display in the panorama display

5. Press the SCALE key to display the Scale menu.

6. Press the [Panorama] soft key to display the Panorama menu.

ESC

7

Displaying the Measured/Calculated Results in the Time Stamp Mode

Zoom box

7-9IM 704310-01E

7.5 Displaying the Panorama Display

7. Press the [Area] soft key.
Turn the rotary knob to set the range to display in the panorama display.

Setting the range to zoom display

8. Press the [ZoomSpan] soft key.
Turn the rotary knob to set the range of the zoom display (size of the zoom box).

Moving the zoom position

9. Press the [Position] soft key.
Turn the rotary knob to move the position of the zoom box.

Setting the speed of movement for the zoom box

10. Pressing the [Movement] soft key and selecting
movement of the zoom box. Selecting increases the speed of movement.

Moving the zoom box to the left end

11. Pressing the [Adjust] soft key moves the zoom box to the left end of the panorama
window.

decreases the speed of

Explanation

ESC

Panorama display

The data can be displayed in the panorama window at the top section of the time
variation display.
In the panorama display, a maximum of 6000 s of time variation can be listed and the
waveform in the zoom box can be displayed zoomed in the main window. The panorama
function is used when you wish to look at the entire set of acquired data.

Setting the panorama display area

You can set the range of the panorama display. The following ranges are available.
0-60/120/300/600 µs, 1.2/3/6/12/30/60/120/300/600 ms, 1.2/3/6/12/30/60/120/300/600/
1200/3000/6000 s

Setting the range of the zoom display

You can set the range of the zoom display (size of the zoom box). The following ranges
are available.
6/12/30/60/120/300/600 µs, 1.2/3/6/12/30/60/120/300/600 ms, 1.2/3/6/12/30/60/120/300/
600/1200/3000/6000 s

Moving the zoom position

You can set which section (zoom position) of the data in the panorama display on which
to zoom.

7-10 IM 704310-01E

7.5 Displaying the Panorama Display

Adjustment function

This function is used to move the zoom box to the left end of the panorama window,
which is useful such as when the zoom box is outside of the panorama window.
When the zoom box is outside the panorama window, the following marker is displayed
in the panorama window.

: A section of the zoom box extends beyond the right end of the panorama display
: The zoom box is beyond the right end of the panorama display.

Selecting the speed of movement

: Moves one dot at a time in the window.
: Moves five dots at a time in the window.

Note

Changing the size or position of the zoom window also changes the [X Span] and [X
Minimum] values of the SCALE key.

7

Displaying the Measured/Calculated Results in the Time Stamp Mode

7-11IM 704310-01E

7.6 Setting the Statistical Calculation Parameters

Procedure

(Calc/Stat)

1. Press the DISPLAY key to display the Display menu.

2. Press the [Calc/Stat] soft key to display the Calculation / Statistics Setting menu.

For histogram display
Setting the statistical calculation area

3. Turn the rotary knob to select the [Calculation Area] item.

4. Press the SELECT key to select [Window] or [Marker].

Setting the constant T

5. Turn the rotary knob to select the [T Value] item.

6. Press the SELECT key to display the numerical input box and enter the value using
the numerical keys.

Selecting the statistical parameters to calculate

7. Use the rotary knob to select the buttons under [Statistics] and press the SELECT
key to check them.
Selecting [All Clear] and pressing the SELECT key removes all the checks.

≡For a functional description, see 1.6.≡

ESC

Selecting the calculation polarity (only for

8. Turn the rotary knob to select the [Calculation Slope]/[Calculation Polarity] item.

9. Press the SELECT key to select one.

7-12 IM 704310-01E

A B, A B

and )

Explanation

7.6 Setting the Statistical Calculation Parameters (Calc/Stat)

For time variation display
Setting the statistical calculation area

3. Turn the rotary knob to select the [Calculation Area] item.

4. Press the SELECT key to select [Window], [Marker], or [Block].

Selecting the statistical parameters to calculate

5. Use the rotary knob to select the buttons under [Statistics] and press the SELECT
key to check them.
Selecting [All Clear] and pressing the SELECT key removes all the checks.

Calculate

Do not calculate

Setting the statistical calculation area

You can set the area over which to calculate statistics.

• Window : The entire displayed window.

• Marker : The area enclosed by the X1, X2, Y1, and Y2 markers.

• Block : When block sampling, the specified block (selectable only during time

variation display).

When block sampling is OFF, the entire data set is used to calculate the

statistics.

7

Displaying the Measured/Calculated Results in the Time Stamp Mode

Statistical parameters to be calculated

Select from the following choices. The calculated parameters and the area for
calculation are different for the histogram and time variation displays.

Histogram display Time variation display

• Average • T.Average

• Maximum • T.Maximum

• Minimum • T.Minimum

• Peak-Peak • T.Peak-Peak

• σ •T.σ

• σ/Average • T.(σ/Average)

• σ/T • T.(P-P/Average)

• E.L.Error • T.RF

• MELE

• Median

• Mode

Constant T (T V alue)

Set this value only for histogram displays.
Selectable range : 1 ns to 250 ns (in 25 ps steps)

7-13IM 704310-01E

7.6 Setting the Statistical Calculation Parameters (Calc/Stat)

Selecting the calculation polarity (Calculation Slope/Calculation Polarity)

Statistics can be calculated on data having the specified slope or polarity. The histogram
corresponding to the specified slope or polarity is displayed in orange; the histogram of
both slopes or polarities is displayed in blue.
You can select the slope or polarity only for the following cases:

When the measurement function is set to time interval and the slope is set to

or

A B

•

A B

A B

: Calculates the statistics on the data from the rising edge of A to the rising

edge of B.

•

A B

: Calculates the statistics on the data from the falling edge of A to the rising

edge of B.

•

A B

: Calculates the statistics on the data from rising or falling edge of A to the

rising edge of B.

•

A B

: Calculates the statistics on the data from rising edge of A to the falling edge

of B.

•

A B

: Calculates the statistics on the data from falling edge of A to the falling edge

of B.

•

A B

: Calculates the statistics on the data from rising or falling edge of A to the

falling edge of B.

When the measurement function is set to pulse width and the polarity is set to

• : Calculates the statistics only on the positive side of the waveform.

• : Calculates the statistics only on the negative side of the waveform.

•

: Calculates the statistics on both the positive and negative sides of the

waveform.

Time interval measurement

Pulse width measurement

7-14 IM 704310-01E

7.7 Changing the Scale Value

Procedure

Executing auto scaling

1. Pressing the AUTO SCALE key executes auto scaling.

Executing manual scaling

1. Press the SCALE key to display the Scale menu.

For histogram display

• Setting the center value of the X-axis

2. Press the [X Center] soft key.
Use the rotary knob or the numerical keys to set the value.

• Selecting the X-axis span

3. Press the [X Span] soft key.
Turn the rotary knob to select the value.

• Selecting the maximum value of the Y-axis

4. Press the [Y High] soft key.
Turn the rotary knob to select the value.

• Selecting the scale type of Y-axis

5. Press the [Y Axis] soft key to select [Lin] or [Log].

≡For a functional description, see 1.7.≡

7

Displaying the Measured/Calculated Results in the Time Stamp Mode

ESC

For time variation display

• Setting the minimum value of the X-axis

2. Press the [X Minimum] soft key.
Use the rotary knob or the numerical keys to set the value.

• Selecting the X-axis span

3. Press the [X Span] soft key.
Turn the rotary knob to select the value.

• Setting the center value of the Y-axis

4. Press the [Y Center] soft key.
Use the rotary knob or the numerical keys to set the value.

7-15IM 704310-01E

7.7 Changing the Scale Value

• Selecting the Y-axis span

5. Press the [Y Span] soft key.

ESC

Explanation

The instrument provides both auto scaling and manual scaling functions.

Auto scaling

Sets the X- and Y-axes automatically according to the measured data.

Turn the rotary knob to select the value.

Manual scaling

You can also manually set the X- and Y-axes. The setting parameters are different for
the histogram display and time variation display as follows:

For histogram display

Range of center values of the X-axis : –50.000 ns to 20.000000000 ms (in 25

ps steps)

Selections for the X-axis span : Select from 1.5/3/7.5/15/30/60/150/

300/600 ns, 1.5/3/6/15/30/60/150/300/
600 µ s, 1.5/3/6/15/30 ms

Selections for the maximum value of the Y-axis : 10/20/40/100/200/400/1000/2000/4000/

10000/20000/40000/100000/200000/
400000/1e6/1e7/1e8/1e9(Lin)
1e1/1e2/1e3/1e4/1e5/1e6/1e7/1e8/
1e9(Log)

Selections for the scale type of the Y-axis : Select Lin (linear scale) or

Log(logarithmic scale)

For time variation display

Range of minimum values of the X-axis : 0 to 3200.0000000 s(in 100 ns steps)
Selections for the X-axis span : Select from 6/12/30/60/120/300/600

µ s, 1.2/3/6/12/30/60/120/300/600 ms,

1.2/3/6/12/30/60/120/300/600/1200/

3000/6000 s
Range of center values of the Y-axis : –50 ns to 20 ms(in 25 ps steps)
Selections for the Y-axis span : Select from 500 ps, 1/2.5/5/10/20/50/

100/200/500 ns, 1/2/5/10/20/50/100/

200/500 µ s, 1/2/5/10/20 ms

7-16 IM 704310-01E

7.8 Reading the Data

Procedure

Turning ON/OFF the marker

1. Press the MARKER key to display the Marker menu.

2. Press the [Marker] soft key to select [ON] or [OFF].

For histogram display
Moving the X marker

3. Press the [X Marker] soft key to select [X1] or [X2].
Turn the rotary knob to move the marker.
The measured value and frequency at the position of the marker are displayed in
the bottom section of the main window.

Moving the X1 and X2 markers simultaneously

4. Press the [X1&X2] soft key.
Turning the rotary knob causes the X1 and X2 markers to move together.

Setting the statistical calculation area (when the calculation area is set to Marker)

5. Press the [Y Marker] soft key
Use the rotary knob or the numerical keys to set the value

Selecting the speed of movement of the marker

6. Pressing the [Movement] soft key and selecting
movement of the zoom box. Selecting

≡For a functional description, see 1.6.≡

7

Displaying the Measured/Calculated Results in the Time Stamp Mode

decreases the speed of

increases the speed of movement.

ESC

7-17IM 704310-01E

7.8 Reading the Data

For time variation display
Moving the X marker

3. Press the [X Marker] soft key to select [X1] or [X2].
Turn the rotary knob to move the marker
The time stamp and measured value at the position of the marker are displayed in
the bottom section of the main window.

Moving the X1 and X2 markers simultaneously

4. Press the [X1&X2] soft key.
Turning the rotary knob causes the X1 and X2 markers to move together.

Moving the Y marker

5. Press the [Y Marker] to select [Y1] or [Y2].
Turn the rotary knob to move the marker.
The measured value at the marker is displayed.

Moving the Y1 and Y2 markers simultaneously

6. Press the [Y1&Y2] soft key.
Turning the rotary knob causes the Y1 and Y2 markers to move together.

Selecting the speed of movement of the marker

7. Pressing the [Movement] soft key and selecting

decreases the speed of

movement of the zoom box. Selecting increases the speed of movement.

ESC

7-18 IM 704310-01E

Explanation

7.8 Reading the Data

Turn ON/OFF the marker

You can read out the data in the histogram or time variation display using the marker.
The read-out value is displayed in the bottom section of the main window. You can also
use Display key’s [Style] to turn ON/OFF the marker and read-out values.

Marker types

The marker type is different for the histogram and time variation displays.

During histogram display

X Marker(X1, X2) : Displays the value of the x coordinate (measured value) and the

frequency of the X1 and X2 markers.

Y Marker : This marker is used to set the statistical calculation area. This

marker becomes effective when the calculation area is set to Marker.

During time variation display

X Marker(X1, X2) : Displays the value of the x coordinate (time stamp) and the

measured value of the X1 and X2 markers.

Y Marker(Y1, Y2) : Displays the value of the y coordinate (measured value).

Displays which block the X marker is reading the value
when block sampling.

Range of movement of the X1 marker

You can move the marker to the same position as or to the left of the X2 marker.

Range of movement of the X2 marker

You can move the marker to the same position as or to the right of the X1 marker.

Selecting the speed of movement of the marker

: Moves one dot at a time in the window.
: Moves five dots at a time in the window.

Y marker range (during histogram display)

0 to 512, 000

Range of movement of the Y1 marker (during time variation display)

You can move the marker to the same position as or below the Y2 marker.

7

Displaying the Measured/Calculated Results in the Time Stamp Mode

Range of movement of the Y2 marker (during time variation display)

You can move the marker to the same position as or above the Y1 marker.

Note

• If there are multiple data points at the marker position, the average of those values is
displayed.

• If there is no data at the marker position, an asterisk (*) is displayed.

• In the histogram display, if the value of the Y marker is larger than the maximum value of the
Y-axis (Y High), the Y marker is not displayed.

7-19IM 704310-01E

Chapter 8 Displaying the Measured/Calculated Results in the Hardware Histogram Mode

8.1 Displaying the Histogram

≡For a functional description, see 1.7.≡

Procedure

1. Press the DISPLAY key to display the Display menu.

Displaying the histogram

2. Press the [Item] soft key to display the Display Item menu.

ESC

3. Press the [Histogram] soft key.

ESC

Setting the display size of the histogram

4. Press the [Style] soft key to display the Display Style menu.

ESC

5. Press the [Graph Size] soft key to display [Half] or [Full].

Setting the display format

5. Press the [Panorama], [Statistics], [Marker], or [Overlap] soft key to select [ON] or
[OFF] for each item.

ESC

8

Displaying the Measured/Calculated Results in the Hardware Histogram Mode

Selecting the window to display (only during multi-window or auto window)

7. Press the [WindowNum] soft key.
Turn the rotary knob to select the window.

ESC

8-1IM 704310-01E

A B

A B

8.1 Displaying the Histogram

Explanation

Display size of the histogram (Graph Size)

Select from the following two choices.
Half : Displays the histogram on the left side of the screen. The right side displays the

Full : Displays the histogram on the entire screen.

Setting the display format (Style)

In addition to the histogram, you can select whether or not to display the following items.

• Panorama : Displays a panorama display. For setting the panorama display, see

• Statistics : Displays statistics in the main window. The statistical parameters to be

• Marker : Displays the read-out values of the X marker. The marker is set using

• Overlap

statistics.

section 8.4.

displayed are set in a dialog box that appears when the [Calc/Stat] soft
key is pressed. For details, see section 8.7.

the menu that is displayed when the MARKER key is pressed.

The ON/OFF setting becomes effective only for the following cases:

• Time interval measurement with the slope set to

• Pulse width measurement with the polarity set to .

A B

or

A B

.

ON : Overlaps the histogram of the slope/polarity that is selected with the

Calculation Slope/Calculation Polarity item (displayed in orange) and the
histogram of both slopes/polarities (displayed in blue).

OFF : Displays the histogram of the slope/polarity that is selected with the

Calculation Slope/Calculation Polarity item (displayed in orange) and the
histogram of both slopes/polarities (displayed in blue) in separate windows.

The following combinations of slopes and polarities can be selected.

• Time interval measurement :

• Pulse width measurement : , ,

For the procedures related to setting the Calculation Slope/Calculation Polarity item in
the Calculation/Statistics Setting menu, see section 8.7.

Selecting the window to display

You can select the window only when using the multi-window or auto window function.
Displays the histogram of the selected window. The following windows can be selected.

• Window specified in the Window Parameter Setting menu. (3T, 4T, etc.)

• All (All windows)

• Summation

,

A B

,

A B

,
,

A B

A B

8-2 IM 704310-01E