Keyence LT-9001 Series Manual de usuario

User’s ManualSurface ScanningLaser Confocal Displacement MeterLT-9001 Series96M12004LT-9000-M-F-E_B5.qxd 12.1.19 8:20 PM ページ1

8Table of ContentsIdentifying Names and Functions of the I/O Terminal ...7-2Terminal Block...

Common Operations and Function Settings5ChapterE LT-9001-IM5-14OUTPUT SettingsThe procedure used to set the measurement mode isexplained as follows.1S

5ChapterCommon Operations and Function SettingsE LT-9001-IM5-15The procedure used to set the analog output isexplained as follows.1Select [OUTPUT] fro

Common Operations and Function Settings5ChapterE LT-9001-IM5-16OUTPUT SettingsAn error may occur in the measured value due tothe surface conditions or

5ChapterCommon Operations and Function SettingsE LT-9001-IM5-17Refer to "Default Values and Setting Range"(page 2-25) for the setting range

Common Operations and Function Settings5ChapterE LT-9001-IM5-18OPTIONAL SettingsProfile modeThe image is focused based on the referencedistance or on

5ChapterCommon Operations and Function SettingsE LT-9001-IM5-19DISPLAY UNITMeasured value displayed in:µm Microns, millionths of a metermil Mils, thou

Common Operations and Function Settings5ChapterE LT-9001-IM5-20OPTIONAL SettingsThe LT-9001 Series has two types of gains to receivethe light intensit

6ChapterEnvironment SettingsE LT-9001-IMChapter6EnvironmentSettingsSetting up the BasicSettings for the Overall UnitThis chapter describes the items f

6-2Items to be Set in the Environment SettingThis section describes the setting items such as the RS-232C interface,program, and interface language.Fo

6ChapterEnvironment SettingsE LT-9001-IM6-3Beep sound ( page 6-7)Interface language ( page 6-7)Coefficient ( page 6-7)Item Default value Setting range

Chapter11-1E LT-9001-IM1ChapterBefore UseBefore UseOutline of the LT-9001SeriesThe LT-9001 Series is a double scan high-accuracy sensor that employs a

6-4How to Set up Environment SettingsThis section describes each environment setting and how to set it up.Perform environment setting while checking t

6ChapterEnvironment SettingsE LT-9001-IM6-5Performs settings for the communication specifications of the RS-232C interface.The settings of the RS-232C

6-6How to Set up Environment SettingYou can perform settings related to the program such as the program selection. Items that can be setHow to copy th

6ChapterEnvironment SettingsE LT-9001-IM6-7Initialization of all program settings1Move the cursor to [P-CLEAR] by using the [▲] or [▼] button.2Select

Environment Settings6Chapter6-8E LT-9001-IMMEMO

7ChapterI/O TerminalE LT-9001-IMChapter7I/O TerminalControlling and Outputtingfrom the I/O TerminalThe LT-9001 Series is equipped with a terminalblock

7-2Identifying Names and Functions of the I/O TerminalThis section describes the names and functions of the I/O terminal of the LT-9001 Series.Types o

7ChapterI/O TerminalE LT-9001-IM7-3The signal names and descriptions of each terminalThe signal names and descriptions of each terminal are described

LO output for OUT2GO output for OUT2HI output for OUT2LO output for OUT1GO output for OUT1HI output for OUT17-47Identifying Names and Functions of the

7ChapterI/O TerminalE LT-9001-IM7-5Connects the external monitor for display and operation.Matching connector: PIN connector (plug)This section descri

1-2E LT-9001-IMBefore Use1ChapterSystem ConfigurationThe LT-9001 Series can be used for various purposes in combination with commercially available de

7-6Identifying Names and Functions of the I/O TerminalAuto-zero inputProgram No. change input The relationship between program numbers and terminals P

7ChapterI/O TerminalBinary outputHow to observe a binary outputThe LT-9001 Series outputs the measured value as a binary number (2'scomplement) o

I/O Terminal7ChapterE LT-9001-IMIdentifying Names and Functions of the I/O Terminal7-8This section describes the electrical specifications and circuit

7ChapterI/O TerminalE LT-9001-IM7-9Timing ChartThe timing charts in the normal measurement and in the profile data output are as follows. Normal/Auto

I/O Terminal7ChapterE LT-9001-IMTiming Chart7-10Binary output• OUT1 and OUT2 are updated asynchronously depending on the number of measurement times f

7ChapterI/O TerminalE LT-9001-IM7-11When the profile output in the profile mode is ON, the profile waveform data and the light intensity waveformdata

I/O Terminal7ChapterE LT-9001-IM7-12Timing ChartHow to output the light intensity waveform in binary data• Either the profile data or light intensity

7-13E LT-9001-IM7ChapterI/O TerminalSampling cycle (T2), minimum input time (internal processing time, binary strobe cycle) (T1)Timing Details (LT-901

I/O Terminal7ChapterE LT-9001-IM7-14Timing ChartSampling cycle (T2), minimum input time (internal processing time, binary strobe cycle) (T1)Timing Det

7ChapterI/O Terminal7-15E LT-9001-IMScanning change time (T3)The scanning change time (T3), which is a duration to change the scanning settings such a

1-3E LT-9001-IM1ChapterBefore UseChecking the Package ContentsThe LT-9001 Series consists of the following models. Check if the parts and equipment li

I/O Terminal7Chapter7-16E LT-9001-IMMEMO

Chapter8RS-232CConnecting to ExternalDevices via RS-232CMeasured values can be acquired or the settingscan be changed by connecting the LT-9001 Series

8-2SpecificationsEIA RS-232C compliant (Modem definition)Refer to "RS-232C Interface" (page 6-2) for setting communication specifications.Us

8ChapterRS-232CE LT-9001-IM8-3You can import the measured value or change the parameters of the LT-9001 Series by connecting it to aPC or PLC link uni

RS-232C8Chapter8-4Outputting Measured Values and Changing Settings by Using CommandsThis section describes the command format to control the measureme

8ChapterRS-232CE LT-9001-IM8-5This section describes the details of the incoming commands and the response commands that are sent afterthe incoming co

8-68Outputting Measured Values and Changing Settings by Using CommandsProfile waveform data outputOutputs all the point data of the profile waveform.

8ChapterRS-232CE LT-9001-IM8-7Auto-zero ON/OFFSets or cancels the Auto-zero function. You can consecutively use the Auto-zero setting command. Program

RS-232C8ChapterE LT-9001-IM8-8This section describes command formats to change the setting contents. Command list* Commands with an asterisk (*) can b

8ChapterRS-232CE LT-9001-IM8-9Parameter format (Format of )Parameter format is length fixed and consists of a positive or negative code symbol and nu

Before Use1ChapterE LT-9001-IM1-4Identifying Part Names and Functions This section describes the names and functions of the controller, measuringunit,

RS-232C8ChapterE LT-9001-IM8-10Select surface settingSets the surface selection that has been specified by the OUTPUT number. Setting of number of dat

8ChapterRS-232CE LT-9001-IM8-11Analog scaling settingSets the analog scaling of the output that has been specified by the OUTPUT number.Calibration se

8-12Outputting Measured Values and Changing Settings by Using CommandsScan width/interval settingSets the scan width and interval.Scan center position

8ChapterRS-232C8-13Dark-out range settingSets the Dark-out range.Mask settingSets either ON or OFF of the Mask function. Mask range settingSets the Ma

8-14Outputting Measured Values and Changing Settings by Using CommandsSetting of the number of times for averagingSets the number of times for averagi

8ChapterRS-232C8-15This section describes command format to check the setting contents. Command listIf the LT-9001 Series receives the response comman

8-16Outputting Measured Values and Changing Settings by Using CommandsThe timing chart of the incoming and response commands is shown below. The t-tim

8-17Outputting Measured Values by Using ExternalSynchronizationThis section describes how to synchronize the measured value with the measurement perfo

8-18Outputting Measured Values by Using External Synchronization• The measured value at the instant the TIMING input turns ON is output if the measure

Chapter9SpecificationsSpecifications of the LT-9001 SeriesThis section describes the specifications of thecontroller and measuring unit, status table,

1ChapterBefore UseE LT-9001-IM1-57AC power inletSupplies power to the LT-9001 Series. 8Power switchTurns on/off the power. 1Sensor unit (Emitter/Recei

Specifications9ChapterE LT-9001-IMSpecifications of the ControllerModel Controller unit/ LT-9501/LT-9010MLT-9501SO (5652)/LT-9030Msensor headLT-9001/L

9ChapterSpecificationsSpecifications of the Measuring UnitE LT-9001-IMModel LT-9010M/LT-9011M LT-9010/LT-9011Measurement range ±0.3 mmReference dista

9-4Specifications Common to the displacement mode and the shape modeStatus TableE LT-9001-IMSpecifications9ChapterScreen Input Output RS-232CMeasured

9ChapterSpecificationsE LT-9001-IM9-5 When the profile output in the profile mode is set to ONOutputAnalog outputBinary outputData output Strobe out

9-6SpecificationsAveraging timeMeasurement response timeThe measurement response time can be calculated with the following formula.• Distance mode: M

9ChapterSpecificationsE LT-9001-IM9-7Outside Dimensions224.5566552.594376±0.5 (Reference distance)463315ø6.3 Cable length 500 3-ø4.5(Mounting hole)ø

Specifications9ChapterE LT-9001-IM9-8SpecificationsCable length 3 mø4.511. 2472.117.14112.717.15.5ø 117828.8ø20Remote control consoleø6.3 Cable lengt

AppendicesThis section describes the troubleshootingmethods, contents of error messages andoptional products.Troubleshooting ...

AppendicesE LT-9001-IMA-2TroubleshootingThis section describes possible errors and problems and their solutions in LT-9001 Series operation. Symptom C

AppendicesE LT-9001-IMA-3Symptom Check point RemedyIs the unit properly wired? Check the output circuit and wiring and connect properly.Judgment cann

Before Use1ChapterE LT-9001-IM1-6Identifying Part Names and Functions 1[ENTER] buttonSelect the items by tilting the [ENTER] button up, down, right or

A-4Error MessagesThe list of error messages displayed in the LT-9001 Series and their remedies is shown below. Message Cause RemedyThere is an abnorma

A-5Optional Product ListThe optional products for the LT-9001 Series are listed below.Product Model Appearance DescriptionMeasuring unit mounting stan

AppendicesE LT-9001-IMParameter MemoUse this page to record the parameters as needed. Displacement modeA-6ItemDefault valueParameterLT-9010 (M) LT-903

AppendicesE LT-9001-IMA-7ItemDefault value ParameterLT-9010 (M) LT-9030 (M)OUT1 OUT2Upper limit+200.00+600.00LimitsLower limit –200.00–600.00Measurem

AppendicesE LT-9001-IMA-8Parameter MemoProfile modeSettingBasic OptionalItem LT-9010 (M) Default value ParameterLight intensity level 30Upper limit +

AppendicesE LT-9001-IMA-9ItemLT-9010 (M) ParameterDefault valueOUT1 OUT2Upper limit +200.00LimitsLower limit –200.00MeasurementA1 (OUT1)A2(OUT2)Numb

E LT-9001-IMA-10Environment Setting Parameter MemoUse this page to record the environment setting parameters as needed. RS-232C interface Program

BBasic operations that stabilize measurement...2-20BASIC settings...2-6, 3-15, 4-13Baud rate [BAUDRATE] ...6-2, 6-5, 8-2

IndexDark-out range ...8-8Dark-out range setting ...8-13Dark-out setting

E LT-9001-IMMIN DISP (Minimum displacement) ...5-18Minimum input time ...7-9, 7-13, 7-14, 7-15Mode display ...

1ChapterBefore UseE LT-9001-IM1-7Mounting and Connecting PartsThis section describes how to mount the controller and the measuring unit. Adjust the di

Index[PAUSE] button ...1-6Pause screen...3-2, 3-9, 4-2, 4-10Peak hold [PEAK] ...

E LT-9001-IMStatus table ...9-4Stop bit length...6-5, 8-2St

A-16E LT-9001-IMMEMOAppendices

A-17E LT-9001-IMMEMOAppendices

Date of printingOctober, 2009April, 2010October, 2010January, 2012December, 2013Official release2nd edition3rd editionRevised 1st edtion2nd revision 1

WARRANTIES AND DISCLAIMERS(1) KEYENCE warrants the Products to be free of defects in materials and workmanship for a period of one (1) year from the d

Copyright (c) 2012 KEYENCE CORPORATION. All rights reserved. 12003E 1123-2 96M12004 Printed in JapanLT-9000-M-F-E_B5.qxd 13.12.16 2:52 PM

Before Use1ChapterE LT-9001-IM1-8Mounting and Connecting PartsUse the controller on a level place. • Keep enough room around the controller for ventil

Chapter2Basic OperationsOutline of BasicOperations2-1E LT-9001-IM2ChapterBasic OperationsThe LT-9001 Series performs settings concerningthe measuremen

IntroductionThis instruction manual describes the operation and functions of the SurfaceScanning Laser Confocal Displacment Meter LT-9001 Series. To e

Basic Operations2ChapterE LT-9001-IM2-2Displacement Mode and Profile ModeThe displacement mode enables you to measure atarged in four ways such as dis

2ChapterBasic OperationsE LT-9001-IM2-3Outline of Measurement and SettingsThe LT-9001 Series has a run mode that performs a measurement, and a program

2-4Outline of Measurement and Settings The run mode displays the measurement screen, the light intensity screen, and the pause screeninterchangeably.R

2ChapterBasic OperationsE LT-9001-IM2-5Four types of settings (OUTPUT settings, BASIC settings, OPTIONAL settings, and Environment settings) canbe per

Basic Operations2ChapterE LT-9001-IM2-6Outline of Measurement and Settings BASIC settingsPerforms settings for the preprocessing common to both OUT1 a

2ChapterBasic OperationsE LT-9001-IM2-7OPTIONAL settingsPerform settings for the additional functions common to both OUT1 and OUT2.Performs settings f

Basic Operations2ChapterE LT-9001-IM2-8Outline of Measurement and Settings Environment settingsPerforms basic settings that are necessary inoperating

2ChapterBasic OperationsE LT-9001-IM2-9The LT-9001 Series can display and output the measured value of OUT1 and OUT2.Displacement modeProfile modeFlow

2-10OperationsThe LT-9001 Series is operated using the remote control console.Pressing the button straight down• For selecting a menu item• For fixing

2ChapterBasic OperationsE LT-9001-IMThe procedure used to select or to enter items/valuessuch as parameters is explained as follows.1Place the cursor

96M12004E LT-9001-IM1Safety Precautions• At startup and during operation, be sure to monitor the functions andperformance of the LT-9001 Series. • We

Basic Operations2ChapterE LT-9001-IM2-12Select either the displacement mode or the profilemode according to the measurement required.(Only displacemen

Using the Displacement Mode1Turn on the power of the controller. 2Slide the [PROG/RUN] switch downward onthe remote control console to display theprog

2-14Using the Displacement Mode1Adjust the height and position of themeasuring unit and fix the distance andposition relating to the measurement targe

2ChapterBasic OperationsE LT-9001-IM1Press the [ENTER] button twice on themeasurement screen and place the cursor onthe value of [UP LIMIT].2Specify t

2-16Using the Profile ModeThis section describes how to measure the leveldifferences on the measurement target in theprofile mode.The operational flow

2ChapterBasic OperationsE LT-9001-IM1Slide the [PROG/RUN] switch downward onthe remote control console to display theprogram mode screen. 2Select [BAS

2-18Using the Profile Mode1Press the [ENTER] button twice on themeasurement screen and place the cursor onthe value of [UP LIMIT]. 2Specify the value

2ChapterBasic OperationsE LT-9001-IM2-191Slide the [PROG/RUN] switch downward onthe remote control console to switch to theprogram mode screen. 2Selec

Basic Operations2ChapterE LT-9001-IM2-20Basic Operations that Stabilize Measurement The LT-9001 has functions to stabilize measurement and prevent err

2ChapterBasic OperationsE LT-9001-IM2-21Measuring the surface shape or displacementSet the longest peak bar (the first peak), which shows that the mea

2Safety PrecautionsCorrective action for noiseDo not install the LT-9001 Series near power sources or high tension cables,otherwise noise may cause th

2-22Resetting the Device to theFactory SettingsIt is possible to delete all setting contents andchange to the LT-9001 default values set at thefactory

2ChapterBasic Operations2-23Default Values and Settings Range (LT-9010 (M))The default values and the setting range of the setting contents of the dis

2-24Default Values and Settings Range The default values and the settings range of the profile mode are shown below. Profile ModeE LT-9001-IMBasic Ope

2ChapterBasic OperationsE LT-9001-IM2-25The default values and setting range of the LT-9001 parameters are listed below. Default Values and Setting Ra

Basic Operations2Chapter2-26E LT-9001-IMDefault Values and Settings Range (LT-9030 (M))The default values and the setting range of the setting content

2ChapterBasic Operations2-27E LT-9001-IMThe default values and setting range of the LT-9001 parameters are listed below. Default Values and Setting Ra

Basic Operations2Chapter2-28E LT-9001-IMMEMO

3ChapterOperations and Function Settings in the Displacement ModeE LT-9001-IMChapter3Operations andFunctionSettings in theDisplacementMode Outline of

3-2Display ScreensSix types of screens are displayed in the displacement mode as shown below.E LT-9001-IMOperations and Function Settings in the Displ

3-3Identifying Part Names and Functions of ScreensThis section identifies the part names and describes the functions of themeasurement screen and the

E LT-9001-IM3Measurement targetThe measured value may fluctuate when the shapes or surfaces of targets vary. Inthis case, use a known target and perfo

3-4Identifying Part Names and Functions of ScreensThis section identifies the part names and describes the functions of thelight intensity screen.1 Di

Measurement ScreenSwitching the single and double displayThe single and double display of OUT1/OUT2 can beswitched by pressing the [▲] and [▼] buttons

3-6Measurement ScreenSwitching the display of OUT1 and OUT2The trend graph of OUT1 and OUT2 can be switchedby using the [▲] and [▼] buttons. Setting t

3ChapterOperations and Function Settings in the Displacement ModeE LT-9001-IM3-7<Before setting>Setting the positionIt is difficult to see the t

Operations and Function Settings in the Displacement Mode3ChapterE LT-9001-IM3-8Light Intensity ScreenThe value, which is set as a threshold for theam

3ChapterOperations and Function Settings in the Displacement ModeE LT-9001-IM3-9Slant adjust If the trend graph is slanted, the displacement might not

Operations and Function Settings in the Displacement Mode3ChapterE LT-9001-IMPause ScreenManual correction after performing slantcorrectionYou can man

3ChapterOperations and Function Settings in the Displacement ModeE LT-9001-IM3-11The procedure to set [MEASUREMENT] is explainedas follows.1Select [OU

Operations and Function Settings in the Displacement Mode3ChapterE LT-9001-IMSELECT SURFACESelect one or two surfaces to be measured from amaximum of

3ChapterOperations and Function Settings in the Displacement ModeE LT-9001-IM3-13Selecting the measurement target surface (onesurface)The procedure us

4Precaution on CE MarkingIt is confirmed that the LT-9001 Series satisfies the requirement of the EUDirectives when the following conditions are fulfi

Operations and Function Settings in the Displacement Mode3ChapterE LT-9001-IMSelecting the measurement target surface (twosurfaces)The procedure used

3ChapterOperations and Function Settings in the Displacement ModeE LT-9001-IM3-15This section describes the basic settings fordisplacement measurement

Operations and Function Settings in the Displacement Mode3ChapterE LT-9001-IM3-16Basic SettingsScan center (Supported only in the LT-9010 (M))Set the

3ChapterOperations and Function Settings in the Displacement ModeE LT-9001-IMDisplays and outputs the DARK ALARM when thelight intensity peaks are not

Operations and Function Settings in the Displacement Mode3ChapterE LT-9001-IM3-18Basic Settings4Place the cursor on the [SETTING RANGE]and select by p

3ChapterOperations and Function Settings in the Displacement ModeE LT-9001-IM3-19OPTIONAL SettingsThis section describes the auto slant correctionfunc

Operations and Function Settings in the Displacement Mode3Chapter3-20E LT-9001-IMMEMO

Chapter4Operationsand FunctionSettings inthe ProfileMode Outline of Profile ModeThe shape of the target is measured by scanningits displacement sectio

Operations and Function Settings in the Profile Mode4ChapterE LT-9001-IM4-2Types of ScreensSix types of screens are displayed in the profile mode as

4-3Identifying Part Names and Functions of ScreensThis section identifies the part names and describes the functions of themeasurement screen and ligh

E LT-9001-IM5Organization of this ManualDescribes the troubleshooting methods, contents of the error messages andoptional products. Operations andFunc

4-4Identifying Part Names and Functions of ScreensThis section identifies the part names and describes the functions of thelight intensity screen.1. D

4ChapterOperations and Function Settings in the Profile ModeE LT-9001-IMMeasurement Screen4-5The measured value and the profile of themeasuring target

Operations and Function Settings in the Profile Mode4ChapterE LT-9001-IMThe profile waveform is a graph consisting of pointdata within the scanning wi

4ChapterOperations and Function Settings in the Profile ModeE LT-9001-IM4-7Setting the positionIt is difficult to see the profile waveform graph when

Operations and Function Settings in the Profile Mode4ChapterE LT-9001-IMOn the light intensity screen, the measured valueand the received light intens

4ChapterOperations and Function Settings in the Profile ModeE LT-9001-IMYou can change the range of the vertical greencursor (Area 1) and that of the

Operations and Function Settings in the Profile Mode4ChapterE LT-9001-IM4-10Pause ScreenThe pause screen stops the update of a profilewaveform graph o

4-11E LT-9001-IM4ChapterOperations and Function Settings in the Profile ModeSlant correctionIf the profile waveform is slanted, the profile cannotbe m

Operations and Function Settings in the Profile Mode4ChapterE LT-9001-IM4-12The procedure used to set the [MEASUREMENT] isexplained as follows.1Select

Basic SettingsThe procedure used to set the ranges of the areas isexplained as follows.1Select [AREA] from [BASIC] on the programmode screen.The area

6Table of ContentsSafety Precautions...1General Precautions...

Operations and Function Settings in the Profile Mode4ChapterE LT-9001-IMBasic Settings4-14Select a combination of scanning width an pitch fromthe tabl

4ChapterOperations and Function Settings in the Profile ModeE LT-9001-IMScan centerSet the scan center for scanning.Refer to "Default Values and

Operations and Function Settings in the Profile Mode4ChapterE LT-9001-IM4-16The procedure used to set the dark alarm status isexplained as follows.1Se

4ChapterOperations and Function Settings in the Profile ModeE LT-9001-IM4-175Press the [ENTER] button.The smoothing setting is fixed.• The larger the

Operations and Function Settings in the Profile Mode4ChapterE LT-9001-IM4-18The procedure used to set the adjustment isexplained as follows.1Select [

4ChapterOperations and Function Settings in the Profile ModeE LT-9001-IM4-19This is the function used to display the measuredshape of the target on a

Operations and Function Settings in the Profile Mode4Chapter4-20E LT-9001-IMMEMO

Chapter5CommonOperationsand FunctionSettingsOutline of Common Operationsand Function SettingsThis chapter describes the operations andfunctions common

Common Operations and Function Settings5ChapterE LT-9001-IM5-2Outline of Operationsand FunctionsMicroscope FunctionMicroscope FunctionThe LT-9001 Seri

5ChapterCommon Operations and Function SettingsE LT-9001-IM5-3Hold FunctionYou can freeze the measured value on the display.Maximum value and minimum

E LT-9001-IMSMOOTH (Smoothing) ...4-17OPTIONAL Settings...4-18CORRECT (Aut

Common Operations and Function Settings5ChapterE LT-9001-IM5-4External I/O terminalIf you short-circuit the [ZERO] input terminal and the[COM1] termin

5ChapterCommon Operations and Function SettingsE LT-9001-IM5-5Keylock FunctionThis feature disables the handheld console,preventing unauthorized opera

Common Operations and Function Settings5ChapterE LT-9001-IM5-6Program ChangeExternal I/O terminalYou can select the program No. by using the [P1] to[P

5ChapterCommon Operations and Function SettingsE LT-9001-IM5-7OUTPUT SettingsThe procedure used to set the LIMITS is explained asfollows.1Select [LIMI

Common Operations and Function Settings5ChapterE LT-9001-IM5-8OUTPUT SettingsYou can perform processes on the measured valueand output it. This sectio

5ChapterCommon Operations and Function SettingsE LT-9001-IM5-9HOLD MODE (Measurement mode)Function of the hold modeYou can select how to output the me

Common Operations and Function Settings5ChapterE LT-9001-IM5-10OUTPUT SettingsNormal [NORMAL]Measures continuously, and displays and outputs the measu

5ChapterCommon Operations and Function SettingsE LT-9001-IM5-11Peak hold [PEAK]Measures the maximum value in the time period (sampling time) specified

Common Operations and Function Settings5ChapterE LT-9001-IM5-12OUTPUT SettingsAuto peak hold [A.PEAK]Measures continuously, and displays and outputs t

5ChapterCommon Operations and Function SettingsE LT-9001-IM5-13Sample hold [SAMPLE]Displays and outputs the measured value at the instant of being spe