Hioki MR8740 Instruction Manual

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MR8740

MR8741

Instruction Manual

MEMORY HiCORDER

Oct. 2018 Revised edition 7

MR8740A982-07 18-10H

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Summary of Contents for Hioki MR8740

Page 1 MR8740 MR8741 Instruction Manual MEMORY HiCORDER Oct. 2018 Revised edition 7 MR8740A982-07 18-10H...
Page 3: Table Of Contents
Contents Contents Usage Index ................1 Introduction.................2 Confirming Package Contents............2 Safety Information ..............3 Operating Precautions..............7 Chapter 1 Overview __________________________________ 15 Product Overview ..............15 Names and Functions of Parts ..........16 Display ................18 Screen Configuration ............19 Basic Operations ...............22 1.5.1 Mouse Operations ..............22 1.5.2 Mouse Right-click Menu ............23 1.5.3...
Page 4 Contents Chapter 3 Measurement Procedure _________________________________ 59 Ensuring Measurement Safety ......... 59 Measurement Workflow ............ 60 Pre-Measurement Inspection ..........62 Setting Measurement Configuration ......... 63 3.4.1 Measurement Function ............63 3.4.2 Time Axis Range and Sampling Rate ........65 3.4.3 Recording Length (number of divisions) ..............
Page 5 6.7.3 Switching the Waveform Display Width ........133 ït 6.7.4 Switching the Format (MR8741 Only) ........133 付 ò^ 6.7.5 Changing the Monitor Values (MR8740 Only) ......133 録 6.7.6 Switch the Displayed Sheet ..........133 ç€ Seeing Block Waveforms ..........134 索 à¯ 引...
Page 6 Contents Chapter 7 Utility Functions ___________________________ 135 Adding Comments ............136 7.1.1 Adding a Title Comment ............136 7.1.2 Adding a Channel Comment ..........137 7.1.3 Alphanumeric Input .............. 139 Displaying Waveforms During Recording (Roll Mode) ... 143 Displaying New Waveforms Over Past Waveforms (Overlay) ................
Page 7 Analog Trigger Settings and Types ........188 Triggering by Logic Signals (Logic Trigger) ....193 Trigger by Timer or Time Intervals (Timer Trigger) ..............195 Synchronizing Between Blocks (MR8740 Only) ..............198 Applying an External Trigger (MR8741 Only) ....199 Triggering Manually (Manual Trigger) ......199 Pre-Trigger Settings ............200 8.9.1 Setting the Trigger Start Point (Pre-Trigger) ......200...
Page 8 Contents 10.3 Waveform Calculation Operators and Results ....233 Chapter 11 Memory Division Function _________________________________ 237 11.1 Recording Settings ............239 11.2 Display Settings .............. 240 Chapter 12 FFT Function _________________________________________ 243 12.1 Overview and Features ........... 243 12.2 Operation Workflow ............244 12.3 Setting FFT Analysis Conditions ........
Page 9 Contents Chapter 13 Waveform Evaluation Function (MR8741 Only) ____________________________ 291 13.1 Waveform GO/NG Evaluation (MEM, FFT Function) ............291 13.2 Setting the Waveform Area ..........294 13.3 Setting the Waveform Evaluation Mode ......296 13.4 Setting the GO/NG Stop Mode ........297 13.5 Creating the Evaluation Area ..........299 13.6 Editor Command Details ..........300 Chapter 14 System Environment...
Page 10 viii Contents by using Model 9333 LAN Communicator ...... 332 Chapter 16 External Control (MR8741 Only) ____________________________ 333 16.1 Connecting External Control Terminals (MR8741 Only) . 334 16.2 External I/O (MR8741 Only) ........... 335 16.2.1 External Input (START/IN1) (STOP/IN2) (SAVE/IN3) ..335 16.2.2 External Output (GO/OUT1) (NG/OUT2) ......
Page 11 Contents Chapter 18 Maintenance and Service __________________________________ 365 18.1 Trouble Shooting .............366 18.2 Initializing the Instrument ..........368 18.2.1 Initializing System Settings (System Reset) ......368 18.2.2 Initializing Waveform Data ............368 18.3 Error Messages ...............369 18.4 Self-Test (Self Diagnostics) ..........372 18.4.1 ROM/RAM Check ..............372 18.4.2 Display Check ...............373 18.4.3 System Configuration Check ..........373 18.5 Updating the Instrument ..........374...
Page 12 Contents...
Page 13: Contents
Usage Index Usage Index Basic Workflow (p.35) Install & Connect Catching Changes in Input Signals (p.185) Install the instrument Applying a Manual Trigger (p.199) Install the input modules Adding Comments (p.136) Connect the cords Install the recording paper Freely Setting the Waveform Display (p.71) Turn power on Converting Input Values (p.146) (p.59)
Page 14: Introduction
When you receive the instrument, inspect it carefully to ensure that no damage occurred during shipping. In particular, check the accessories, panel switches, and connectors. If damage is evident, or if it fails to operate according to the specifications, contact your dealer or Hioki representative. Confirm that these contents are provided. (One each)
Page 15: Safety Information
Safety Information Safety Information Mishandling during use could result in injury or death, as well as damage to the instrument. Be certain that you understand the instructions and precautions in the manual before use. With regard to the electricity supply, there are risks of electric shock, heat gener- ation, fire, and arc discharge due to short circuits.
Page 16 Safety Information Symbols Affixed to the Instrument Indicates cautions and hazards. When this symbol is printed on the instrument, refer to the corresponding topic in this Instruction Manual. Indicates the ON side of the power switch. Indicates the OFF side of the power switch. Indicates DC (Direct Current).
Page 17 Safety Information Mouse Operations Click: Press and quickly release the left button of the mouse. Right-click: Press and quickly release the right button of the mouse. Double-click: Quickly click the left button of the mouse twice. Drag: Move the mouse while holding down the left button of the mouse, and then release the button at the desired position.
Page 18 Safety Information Measurement categories To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards for various electrical environments, categorized as CAT II to CAT IV, called measurement categories. • Using a measuring instrument in an environment designated with a higher- numbered category than that for which the instrument is rated could result in severe accidents, and must be carefully avoided.
Page 19: Operating Precautions
Replace the connection cable with those specified by our company. • Verify that it operates normally to ensure that no damage occurred during stor- age or shipping. If you find any damage, contact your authorized Hioki distribu- tor or reseller. Instrument Installation Installing the instrument in inappropriate locations may cause a malfunction of instrument or may give rise to an accident.
Page 20 If you lose any screw or find that any screws are damaged, please contact your Hioki distributor for a replacement. • To avoid damage to the instrument, protect it from physical shock when trans- porting and handling.
Page 21 Operating Precautions Handling Media • Do not remove the media while it is being accessed by the instrument. Data on the media could be lost. • Do not turn off the power to the instrument while the media is being accessed by the instrument.
Page 22 Operating Precautions Before Connecting Cables When measuring power line voltage • Connecting cables should only be connected to the secondary side of a breaker Even if there is a short circuit on the secondary side of the breaker, the breaker cuts off the electric supply. Do not connect to the primary side of a breaker because unrestricted current flow could damage the instrument and facilities if a short circuit occurs.
Page 23 Operating Precautions Before Connecting a Logic Probe to the Measurement Object To avoid electric shock and short circuit accidents or damage to the instru- ment, pay attention to the following: • The ground pin in the LOGIC connector (plug) of the Model 9320-01 and 9327 Logic Probes (and legacy Models 9306 and 9320) is not isolated from this instrument’s ground (common ground).
Page 24 This may cause damage or malfunctioning. • After connecting the communications cable, tighten the screws on the connec- tor securely. Failure to secure the connector could result in equipment mal- function or damage. MR8740 does not support external control.
Page 25 • Keep discs inside a protective case and do not expose to direct sunlight, high temperatures, or high humidity. • Hioki is not liable for any issues your computer system experiences in the course of using this disc. Precautions During Shipment Keep the packing material that was used for shipping this instrument because you may need to use it when transporting the instrument in the future.
Page 26 Operating Precautions...
Page 27: Chapter 1 Overview
Overview 1.1 Product Overview The Memory HiCorder is easy to operate and allows quick and efficient measurement and analysis. Major applications include error monitoring and inspection lines. The product offers the following features. MR8740 MR8741 Simultaneous multi-chan- nel measurement All channels isolated Measure up to 54 analog channels.
Page 28: Names And Functions Of Parts
1.2 Names and Functions of Parts 1.2 Names and Functions of Parts MR8740 Front USB Connector (Type A) Connect USB memory sticks here. DVI-D Connectors (p.52) Connect an LCD monitor here. Power Indicator Lit when the instru- ment is on.
Page 29 1.2 Names and Functions of Parts MR8741 Front External control terminals Input any external sampling signal here. (p.334) Allows control of the instrument. Standard LOGIC Terminals Input connectors for optional logic probes. (p.39) DVI-D Connector Connect an LCD monitor here. Power Indicator Lit when the instru- ment is on.
Page 30: Display
LCD cable as far away as possible from sources of interference. • MR8740 displays the waveforms of the block I side (32 analog channels + 8 logic channels) with DVI-I, and the waveforms of the block II side (22 analog channels + 8 logic channels) with DVI-II.
Page 31: Screen Configuration
1.4 Screen Configuration 1.4 Screen Configuration The screen configuration is shown below. Click an item with the mouse to display the corresponding screen. On the Waveform screen, the trigger settings window and channel settings window can be displayed. Waveform Screen DISP This screen is for observing waveforms.
Page 32 1.4 Screen Configuration Explanation of Screen Contents __________________________________ Waveform Screen Title comment Trigger time Media icon Operation icons Current date and time Shows the set title com- Shows the date and Shows the media status. Left-click to scroll the wave- ment.
Page 33 1.4 Screen Configuration Elements common to the Status screen, Channel screen, System screen, and File screen Sheet tabs Shows the names of sheets that can be selected. Click a tab to switch to the corresponding sheet. Next Page This is shown if there are more than six se- lection items.
Page 34: Basic Operations
1.5 Basic Operations 1.5 Basic Operations You can use a mouse to make various settings on the instrument. This section explains how to per- form mouse operations. 1.5.1 Mouse Operations Use a commercially available USB mouse to operate the instrument. •...
Page 35: Mouse Right-Click Menu
1.5 Basic Operations 1.5.2 Mouse Right-click Menu Right-clicking with the mouse displays a list of screens. This section describes the menu and the screens that can be displayed. DISP Waveform screen Click [DISP] to display the Waveform screen. If the Waveform screen is already displayed, the GUI menu on the right of the screen changes each time you click this item.
Page 36 1.5 Basic Operations CH.SET Waveform display This is the normal waveform display state. Move the cursor to [DISP] and then click any of the menu items under [CH.SET] to switch to one of the screens 2 to 5. Alternatively, you can click the [CH.SET] icon on the bottom right of the Waveform display screen to switch screens.
Page 37 1.5 Basic Operations TRIG.SET Waveform display This is the normal waveform display state. Clicking [TRIG.SET] switches between screens 1 to 3. Alternatively, you can click the [TRIG.SET] icon on the bottom right of the Waveform display screen to switch screens. Analog trigger 1/2 Logic trigger Displays the screen for setting the trigger criteria...
Page 38 1.5 Basic Operations STATUS Status Numerical calculation Displays the screen for setting the basic items for Displays the screen for setting the analysis of measurement such as the time axis range. measured waveform data. Memory division Waveform calculation Displays the screen for setting the measurement Displays the screen for setting the application and of waveform data using the internal memory of the analysis of addition, subtraction, multiplication,...
Page 39 1.5 Basic Operations CHAN Unit list Each channel Displays a list of plug-in units inserted into the Displays the settings for each unit. instrument and their settings. Scaling Comments Displays the screen for setting the conversion of Displays the screen for setting a comment for measurement values using linear functions.
Page 40 1.5 Basic Operations SYSTEM Environment File save Displays the screen for setting the operating envi- Displays the screen for setting the method for sav- ronment of the instrument. ing measurement data. Interface Initialization Displays the screen for the LAN communication Displays the screen for clearing the settings of the setting conditions.
Page 41: Mouse Left-Click Operations
1.5 Basic Operations 1.5.3 Mouse Left-click Operations You can select menus and confirm items by left-clicking with the mouse. This section describes left-click operations for menu selection and settings. Operations on a Settings Screen Clicking a setting When clicked, the setting becomes selected, the frame changes color, and the setting flashes.
Page 42 1.5 Basic Operations Changing Pages on a Settings Screen When settings are split into multiple pages, you can change the settings screen directly by clicking the displayed tabs. With the tabs of the Waveform screen, clicking the currently selected tab again changes the dis- played channel.
Page 43: Mouse Wheel Operations
1.5 Basic Operations 1.5.4 Mouse Wheel Operations For an item with a list menu, you can change the setting item with the mouse wheel. You can also use the mouse wheel to scroll the display of a menu that has a scroll bar displayed. Selecting from a list menu For a setting with a selection item list displayed on the top right of the screen, you can use the wheel to change...
Page 44: Waveform Operations
1.5 Basic Operations 1.5.5 Waveform Operations You can scroll a waveform and change the cursor position on the Waveform screen. Scrolling measured waveforms left or right When the mouse cursor is in the Waveform screen, you can scroll the waveform by moving the mouse left or right while holding down the left mouse button (drag- ging).
Page 45: Measurement Operations
1.5 Basic Operations 1.5.6 Measurement Operations You can control the starting and stopping of measurement from the menu that is displayed by right- clicking. Starting measurement Click [START] to start measurement. Stopping measurement Click [STOP] to stop measurement. Triggering manually When the instrument is in a measuring state, you can click [MANUAL TRIG]...
Page 46: File Operations
1.5 Basic Operations 1.5.7 File Operations You can change the displayed folder, load files, and perform other file operations on the File screen. Moving to a folder To move to a folder, double-click the folder to which you want to move. To move to the folder one layer up, click the folder path part.
Page 47: Measurement Preparations
Measurement Chapter 2 Preparations Work Flow Install this instrument (p.7) Install an input module (p.36) (Adding or replacing an input module) Connect a logic probe to the Standard (p.39) LOGIC terminals (When measuring logic signals) Connect the input cable(s) to the input (p.39) module (When measuring analog signals)
Page 48: Install An Input Module
2.1 Install an input module 2.1 Install an input module Input modules specified at the time the instrument is ordered are supplied preinstalled. Use the fol- lowing procedures to add or replace input modules, or to remove them from the instrument. Preparations •...
Page 49 Information about the input modules installed the instrument can be verified in the System Configuration list (p.346). allocation MR8740 The instrument has a two-block configuration consisting of Block I and Block II. For each block, the module numbers are in order starting with one at the top, and the channel numbers are in order starting with one on the left of the module at the very top.
Page 50 2.1 Install an input module MR8741 The module numbers are in order starting with one at the left, and the channel numbers are in order starting with one at the bottom of the module at the very left. Analog channels only LB LC LD [1:4] [1:4] [1:4] [1:4] Mix including logic units...
Page 51: Connecting Cords
2.2 Connecting Cords 2.2 Connecting Cords Read "Before Connecting Cables" ( p.10) carefully. For detailed precautions and instructions regarding connections, refer to the instruction manuals for your modules, connection cables, etc. Measuring Voltage Use to connect: Connection cords Applicable Input Modules •...
Page 52 2.2 Connecting Cords Connect to BNC jack Example: 8966 Analog Unit Required item: One of the above cables BNC jack Connecting the cable Connect the BNC plug on the cable to a BNC jack on the input module. BNC plug slots Align the slots in the BNC plug with the guide pins on the jack on the input module, then push and twist the plug...
Page 53 2.2 Connecting Cords Measuring Frequency, Number of Rotations and Count Refer to (p.40) for details about connecting to BNC terminals. Applicable Input Modules Use to connect: Connection cords • Model 8970 Freq Unit • L9197 Connection Cord (Maximum input voltage: 600 V) Connect to the BNC jack on an input module.
Page 54 2.2 Connecting Cords Measuring Temperature Use to connect: Thermocouple Applicable Input Modules • 8967 Temp Unit (Compatible wire: AWG 16 to 26, 0.4 to 1.2 mm diameter) Connect to the terminal block on the input module. Connect to terminal block Insert to terminal block 25 mm Required item:...
Page 55 Applicable Modules The following device can be connected to the module. • Model U8969 Strain Unit • Strain Gauge Transducer (Not available from Hioki) • Model 8969 Strain Unit • Connect L9769 or 9769 Conversion Cable to the strain gauge transducer.
Page 56 2.2 Connecting Cords Connection of Model L9769 • Pin F of the module end is connected with Pin A of the strain gauge transducer end. • Pin G of the module end is connected with Pin C of the strain gauge transducer end. Connect to input module's terminal Example: Connecting the 9769 Conversion Cable with the supplied conversion cable 8969 Strain Unit...
Page 57 CT6844, CT6845 AC/DC Current Probe • 8971 Current Unit cannot be used with MR8741. Example: • With MR8740, up to four 8971 Current 9272-10+9318 Units can be used. Connect to input module's terminal Example: When connecting the 9272-10 Clamp-On Sensor...
Page 58 • 9320 Logic Probe LOGIC terminal • 9320-01 Logic Probe • 9327 Logic Probe LA to LB (MR8740) and LA to LD (MR8741) are supplied as standard equip- ment with the instrument. Connect to LOGIC Terminals Example: Connecting the 9327 Logic Probe...
Page 59 2.2 Connecting Cords Measuring Voltage with High Accuracy (Digital Voltmeter) Applicable Input Modules Cables to connect: L2200 Test Lead • Model MR8990 Digital Voltmeter Unit • L2200 Test Leads (Maximum input voltage: 1000 V) Connect to the banana jacks on a module. Connect to banana jacks Connecting the test leads Required item: Test leads above...
Page 60 2.2 Connecting Cords High Voltage Measurement Applicable Input Modules Required item: Model L4940 Connection Cable Set • Model U8974 High Voltage Unit • Model L4940 Connection Cable Set: (Maximum input voltage: 1000 V) Connect to the banana jacks on a module.
Page 61 2.2 Connecting Cords To Connect to banana jacks Connect the Connection cable Required item: Model L4940 Connection Cable Set Banana jacks Connect the plug of the connection cable to the banana jacks on the module. Connect the terminal and the plug of the same color.
Page 62 2.2 Connecting Cords Output Waveform Required item: Model L9795-01 /L9795-02 Connection Applicable Modules Cableconnect: L2200 Test Lead • Model U8793 Arbitrary Waveform Generator Unit • Model L9795-01 Connection Cable (Electrical clips) • Model MR8790 Waveform Generator Unit • Model L9795-02 Connection Cable (BNC output) Connect to the SMB jack on a module.
Page 63 2.2 Connecting Cords Output Pulse Waveform Applicable Module Required items: Commercially available cable • Model MR8791 Pulse Generator (Half-pitch 50 pins) ･ Unit 入力ユニットのバナナ端子に接続します。 To Connect to Output Connector Output connector Example: Model U8793 Required items: Commercially available cable Connect the connection cable to Output Connector of module.
Page 64: Recording Media Preparation
• Not all commonly available USB memory sticks are supported. • To use a USB memory stick, suitable unit settings must be made, as described below. USB Connector (Type A) MR8740 Inserting a USB memory stick Front Side Back Side Ensure correct orientation of the USB memory stick and push it all the way into the connector.
Page 65: Formatting Storage Media
2.3 Recording Media Preparation 2.3.2 Formatting Storage Media Possible targets for formatting are USB memory stick, and internal memory. During the formatting process, a folder named "HIOKI_MR8740" or "HIOKI_MR8741" will be created. Note that formatting used storage media deletes all the information on the stor- age media and that deleted information is unrecoverable.
Page 66: Supplying Power
2.4 Supplying Power Supplying Power Read "Before Turning the Power Supply On" ( p.11) carefully. 2.4.1 Connecting the Power Cord Connect the power cord to MR8740/MR8741 and plug it into an AC outlet. Connection Procedure Back Side MR8740 MR8741 Connect the power cord to the power inlet on the instrument.
Page 67: Turning The Power On And Off
This section explains the correct procedure for powering the unit up or down. Turning Power On Back Side Power On Power On MR8740 MR8741 Turn the POWER switch on ( | ). The startup screen appears first, and then the Waveform screen is shown.
Page 68: Setting The Clocks
The instrument contains a built-in backup lithium battery, which offers a service life of about ten years. If the date and time deviate substantially when the instru- ment is switched on, it is the time to replace that battery. Contact your dealer or Hioki representative.
Page 69: Adjusting The Zero Position (Zero-Adjust)
2.6 Adjusting the Zero Position (Zero-Adjust) 2.6 Adjusting the Zero Position (Zero-Adjust) This procedure compensates for input module differences and sets the reference potential of the instrument to 0 V. The compensation procedure is performed for all channels and ranges. Before starting zero-adjust •...
Page 70: Performing Calibration (When Mounting Mr8990)
2.7 Performing Calibration (When Mounting MR8990) 2.7 Performing Calibration (When Mounting MR8990) This procedure compensates for MR8990 Digital Voltmeter Unit differences. The compensation procedure is performed for all channels and ranges. Before starting calibration • Before performing this procedure, allow the equipment to warm up for about 30 minutes after the power is turned on to enable the internal temperature of the input modules to stabilize.
Page 71: Measurement Procedure
MR8990 Digital Voltmeter Unit 500 V DC AC/DC 300 V (CAT II) 1000 V DC 1000 V AC/DC (CAT III) U8974 High Voltage Unit 700 V AC 600 V AC/DC (CAT IV) MR8740/ Input module Maximum rated MR8741 input voltage Maximum rated volt- Memory HiCorder...
Page 72: Measurement Workflow
3.2 Measurement Workflow 3.2 Measurement Workflow Pre-Measurement Inspection See: "3.3 Pre-Measurement Inspection" (p.62) Make basic settings for measurement See: Select suitable recording method for "3.4.1 Measurement Function" (p.63) measurement target "3.4.2 Time Axis Range and Sampling Rate" Set data acquisition speed (p.65) Set waveform length "3.4.3 Recording Length (number of divisions)"...
Page 73 3.2 Measurement Workflow Starting Measurement See: "3.6 Starting and Stopping Measurement" (p.79) "Chapter 4 Saving/Loading Data & Managing Files" (p.81) "6.1 Reading Measurement Values (Using the A/B Cursors)" (p.118) "6.3.2 Scrolling the Measurement Waveform" (p.123) "6.5 Magnifying and Compressing Waveforms" (p.127) Stopping Measurement See: "3.6 Starting and Stopping Measurement"...
Page 74: Pre-Measurement Inspection
The following steps should be performed before measurement. Before using the instrument the first time, verify that it operates normally to ensure that the no damage occurred during storage or shipping. If you find any damage, contact your dealer or Hioki representative.
Page 75: Setting Measurement Configuration
3.4 Setting Measurement Configuration 3.4 Setting Measurement Configuration Set measurement conditions as follows. By calling up the Waveform screen and then using the Settings window to make basic settings, you can immediately verify the effect of settings on the waveform. Basic settings can also be made by calling up the Status screen and selecting the [Status] sheet.
Page 76 3.4 Setting Measurement Configuration Description Recorder Function Values With the Recorder function, each data sample consists of the maximum and min- imum values acquired in the specified sampling period. So each data sample has its own amplitude breadth. Data of One Sample 1 2 3 4...
Page 77: Time Axis Range And Sampling Rate
3.4 Setting Measurement Configuration 3.4.2 Time Axis Range and Sampling Rate The timebase setting establishes the rate of input signal waveform acquisition, specified as time- per-division on the horizontal axis (time/div). The sampling setting specifies the interval from one sample to the next. (The setting is shown in brackets under the time axis range for the Memory function (see illustration at right).
Page 78 3.4 Setting Measurement Configuration Description Selecting the Refer to the table below when setting the time axis range. time axis range For example, to measure a 100 kHz waveform, the maximum display frequency set- ting range according to the table is 200 kHz - 800 kHz. If the maximum display fre- quency is set to 400 kHz, setting the time axis range to 10 μs/div is recommended.
Page 79 3.4 Setting Measurement Configuration The sampling rate is automatically set to 1/100 of the selected time axis range. If MR8990 Digital Voltmeter Unit is installed, the sampling rate for the chan- nels of that unit is set to 1/50. Example: When 8966 is installed on unit 1 (channels 1 and 2) and MR8990 on unit 2 (channels 3 and 4), and the time axis is set to 1 s/div Sampling rate of unit 1 (8966): 10 ms Sampling rate of unit 2 (MR8990): 20 ms...
Page 80: Recording Length (Number Of Divisions)
3.4 Setting Measurement Configuration 3.4.3 Recording Length (number of divisions) Set the length (number of divisions) to record each time data is acquired. Procedure → To open the screen: Right-click and select [DISP] Waveform screen Memory Function case Move the flashing cursor to the [Shot] item, and then left-click.
Page 81 3.4 Setting Measurement Configuration Description Recording Length and Data Samples Each division of the recording length consists of 100 data samples. The total number of data samples for a specified recording length = set recording length (divisions) × 100 + 1. However, if MR8990 Digital Voltmeter Unit is installed, the number of data sam- ples is as follows.
Page 82: Screen Layout
3.4 Setting Measurement Configuration 3.4.4 Screen Layout You can specify the format in which the input signal is shown on the Waveform screen. Selecting X-Y1 screen or X-Y4 screen allows waveform X-Y synthesis. (This applies to the Memory function.) See: "6.4 Performing Waveform X-Y Synthesis"...
Page 83: Input Channel Setting
3.5 Input Channel Setting 3.5 Input Channel Setting Set the analog channel and logic channel. Opening the Channel settings window See: "Displaying All Channels for Making the Variable Function Setting" (p.155) Click [DISP] [CH.SET] in the → right-click menu. You can switch setting screens by clicking a tab.
Page 84: Channel Setting Workflow
3.5 Input Channel Setting 3.5.1 Channel Setting Workflow Explains the workflow to make settings for the analog channels (MR8740: Ch1 - Ch32, MR8741:Ch1 - Ch16). Select the channels to use (Memory function) only) Make input and screen display related settings...
Page 85 • Waveform display position can be specified in 1% increments. • Not displayed for X-Y1 and X-Y4 screens. • With MR8740, install the logic units on unit 1 to unit 8. Any logic units installed on units 9 and after will be invalid.
Page 86: Analog Channel
3.5 Input Channel Setting 3.5.2 Analog Channel Set the analog channel. For information on specific settings for 8967 TEMP Unit, 8969 Strain Unit, U8969 Strain Unit, 8972 DC/RMS Unit and MR8990 Digital Voltmeter Unit, and U8974 High Voltage Unit see "7.9"(p.159). Procedure →...
Page 87 3.5 Input Channel Setting 4. Vertical axis Vertical axis (voltage axis) zoom-up or zoom-down settings can be made sepa- rately for each channel. The settings will be used for display. (Voltage axis) Zooming is carried out using the zero position as reference. The measurement Zoom resolution does not change.
Page 88 3.5 Input Channel Setting Full-scale resolution for input units at various vertical axis zoom factors (LSB) Input module Zoom factor ×1/10 ×1/5 ×1/2 ×1 ×2 ×5 ×10 ×20 ×50 ×100 8966 (Analog) 20000 10000 8971 (Current) 4000 2000 1000 (4000) (4000) 8972 (DC/RMS) 8967...
Page 89: Logic Channel
3.5 Input Channel Setting 3.5.3 Logic Channel Make settings for the logic channels. The channel settings window (Logic sheet) is shown when the display format is 1, 2, 4, 8 or 16 screens. Procedure → → To open the screen: Right-click and select [DISP] Waveform screen Right-click and select...
Page 90: Display Sheet
2 in the case of MR8741), the standard logic can no longer be used. • With MR8740, install the logic units on unit 1 to unit 8. Even if you install logic units on units 9 and after, they will be invalid.
Page 91: Starting And Stopping Measurement
3.6 Starting and Stopping Measurement 3.6 Starting and Stopping Measurement This section explains how to initiate and terminate a measurement. Procedure → To open the screen: Right-click and select [DISP] Waveform screen Starting Measurement Click [START] to start measuring. • When a measurement is started, waveform data that were displayed on the screen are cleared.
Page 92 3.6 Starting and Stopping Measurement Measurement and Internal Operations Measurement methods are normal measurement (start recording when measurement starts) and trigger measurement (start recording when trigger criteria are satisfied). In this manual, "Measurement start" [START] means the instant when you click , and "Recording start"...
Page 93: Saving/Loading Data & Managing Files
Saving/Loading Data Chapter 4 & Managing Files Data can be saved and loaded and files can be managed. Before saving data, configure the save settings on the [File Save] sheet. Load data and manage files from the File screen. Opening the [File Save] sheet Click...
Page 94 Opening the File screen [FILE] Click in the right-click menu. The file order will be displayed. : Ascending order : Descending order The selected file is indicated by a flashing cursor. Read-only files and folders are shown in blue. Deleting or re- naming such files is not possi- ble.
Page 95: Data Capable Of Being Saved & Loaded
When loading waveform data of divided saving: Import the IDX index data. *4: Loading is possible with the Wave Viewer (Wv). *5: This is a standard Windows graphics format. File in this format can be handled by many graphics programs. : File type cannot be handled by MR8740/MR8741.
Page 96 Files larger than 2 GB cannot be saved. Data Not Loadable on the Instrument______________________________ • Data saved on devices other than the MR8740/MR8741 Memory HiCorder, MR8847s Memory HiCorder, and MR8827 Memory HiCorder. • Image files other than waveform evaluation areas ( •...
Page 97: Saving Data
4.2 Saving Data 4.2 Saving Data 4.2.1 Save Types and Workflow There are basically three types of save operations. To save data automatically To save data manually with [SAVE] (p.91) during measurement Save data straight away Select data and save (p.86) Auto Save Quick Save...
Page 98: Automatically Saving Waveforms
4.2 Saving Data 4.2.2 Automatically Saving Waveforms Measurement data are acquired for the recording length and then saved automatically each time. Save location and data type are selected before the measurement. Waveform data can be saved. Procedure → To open the screen: Right-click and select [SYSTEM] [File Save] sheet...
Page 99 4.2 Saving Data Select the save area. Move the flashing cursor to the [Save Area] item. Select Whole Save all recorded data. (default setting) Wave Save the data between the A and B cursors. If only the A cursor is Wave used, the range from the A cursor position to the end of the data is saved.
Page 100 4.2 Saving Data Select the channel to save. Move the flashing cursor to the [Save Channel] item. Select Disp Ch Saves the channels of all sheets for which waveform display is set to [On]. (default setting) All Ch Saves all measured channels (in the case of the memory function, channels has been set as [Used Ch] on the Status settings screen).
Page 101 4.2 Saving Data Auto Save Operations (When setting the save destination to the recording media) Example 1: Saving Files to the Topmost Directory of the Storage Media (A folder named "HIOKI_MR8740 " is created and file is saved there) 0000AUTO.MEM Save To: USB:\HIOKI_MR HIOKI_MR8740...
Page 102 The destination folders and files are named in the previ- ously-determined formats as follows: Waveform files Specified WAVE123015.MEM folder 192.168.1.1 14-01-10 HIOKI 9333 WAVE123245.MEM Folder name will be Model 14-01-11 WAVE123245.TXT MR9947 IP address. Folder names Folder name will be will be "YY-...
Page 103: Saving Data Selectively (Save)
4.2 Saving Data 4.2.3 Saving Data Selectively (SAVE) To perform quick saving by clicking [SAVE] in the right-click menu, you need to set the saving con- ditions beforehand. The type of data to be saved are as following. (Settings data, waveform data, display screens, waveform screen, numerical calculation results) Procedure →...
Page 104 4.2 Saving Data Specify the action if a file with the same name exists in the target folder. Move the cursor to [Same Name]. Select Auto If no files with the same name exist, saves the file with the desig- nated name.
Page 105 4.2 Saving Data • If the MR8990 is installed, one data item more than the number of data items specified with the A and B cursors may be saved. • The data that is measured and saved with the MR8990 will be the same data twice in a row.
Page 106: Saving Example (Saving For Memory Division)
4.2 Saving Data 4.2.4 Saving Example (Saving for Memory Division) For details on mouse operations for basic file screens, see "1.5.7 File Operations" (p.34). Saving a Memory Division Waveform File Configure the memory division settings, and then perform measurement. See: "Chapter 11 Memory Division Function"...
Page 107 4.2 Saving Data [Save Area]. (All waveforms or waveforms between A and B) [Save Block]. [All Blks] Saves all blocks with waveforms. [Start-End] Saves all blocks from the start block to the end block. Configure each setting, and then click [Exec]. When the data is saved, a folder is created under the name set as the save name, and the wave-...
Page 108: Save Waveform Output Data To The Media
4.2 Saving Data 4.2.5 Save Waveform Output Data to the Media The pulse pattern data registered in Model MR8791, arbitrary waveform data registered in Model U8793,or program data is saved in the media. Before attempting to save the data, make sure that the storage media is inserted and the loading target is cor- rectly specified.
Page 109: Loading Data
4.3 Loading Data 4.3 Loading Data Data saved on media or in the internal memory of the instrument can be reloaded. Data Loading Workflow Before attempting to load data, make sure that the storage media is inserted and the loading target is correctly specified.
Page 110 Insert the storage media before making the media selection. Other limitations • Data saved with Memory HiCorders other than the MR8740/MR8741, MR8847s and MR8827 cannot be loaded. • When loading waveform data, the settings for the instrument are the same set- tings as when the data is saved.
Page 111 4.3 Loading Data Batch load of waveform data When the following index files are loaded, waveform data can be loaded as a batch. With the following settings, index files are created along with waveform files. Extension Explanation Divided files are loaded together. (To create index files: Use [Division] at the...
Page 112: Managing Files
4.4 Managing Files 4.4 Managing Files Click to display the File screen. Data saved to storage media can be managed on the File [FILE] screen. Select a file from the file list. Before performing an operation, insert the storage media. When no storage media is inserted, "NO FILE"...
Page 113: Saving
4.4 Managing Files 4.4.1 Saving You can save settings data or waveform data on storage media. Data will be saved in the folder indi- cated by the cursor. By using the A/B cursor pair, waveform data can be saved partially. Procedure →...
Page 114 4.4 Managing Files (When [Wave Binary] is the selected save type) Select whether to save divided files. Move the flashing cursor to the [Division] item. Select Files are not divided when saved. If a file is too large, it can- not be saved.
Page 115: Checking The Contents Of A Folder (Open A Folder)
4.4 Managing Files 4.4.2 Checking the Contents of a Folder (Open a Folder) See the contents of a selected folder (by opening that folder). Procedure → To open the screen: Right-click and select [FILE] File screen To change the media: (p.82) Move the flashing cursor to the folder whose contents you want to see.
Page 116: Deleting Files & Folders
4.4 Managing Files 4.4.4 Deleting Files & Folders Delete a file or folder. Procedure → To open the screen: Right-click and select [FILE] File screen To change the media: (p.82) Select the file or folder you want to delete. Select Select [Delete].
Page 117: Sorting Files
4.4 Managing Files 4.4.5 Sorting Files Sort files in the file list into a specified order. Procedure → To open the screen: Right-click and select [FILE] File screen To change the media: (p.82) Select [Sort], and select [Type] No sorting. Select Name Sorts files by file name characters.
Page 118: Copying A File Into A Specified Folder
4.4 Managing Files 4.4.7 Copying a File Into a Specified Folder You can copy a file into a specified folder. Procedure → To open the screen: Right-click and select [FILE] File screen To change the media: (p.82) Move the flashing cursor to the file you want to copy. Select Select [Copy].
Page 119: Chapter 5 Printing
Chapter 5 Printing [Printer] sheet lets you specify the print method and make other printing related settings. The data to be printed are transferred to the PC connected via LAN and printed by using the printer con- nected to the PC. Opening the [Printer] sheet...
Page 120: Printing Type And Workflow
5.1 Printing Type and Workflow 5.1 Printing Type and Workflow There are basically three types of printing operations. To print data immediately To print data automatically To selectively print data when the "Send Print Key" is during measurement after measurement executed by using Model 9333 after measurement Auto Print...
Page 121: Making Auto Print Settings
5.2 Making Auto Print Settings Making Auto Print Settings This applies to the Memory function, Recorder function, and FFT function. Make these settings before measurement. Measurement data is printed automatically when you press the key to start measurement. START Make sure that the PC connected via LAN is prepared. Procedure →...
Page 122: Send Print Key
5.3 Send PRINT key 5.3 Send PRINT key If the "Send Print Key" is executed by using Model 9333, the data are printed after the print range and types are selected. This is also useful to prevent inadvertent printing due to operation errors. Procedure →...
Page 123: Set The Print Contents
5.4 Set the print contents 5.4 Set the print contents Set the print contents on the [Printer] sheet of the System screen. Print contents setting → To open the screen: Press the SYSTEM [Printer] sheet ⇒ p.114) ⇒ p.115) Select the grid type. Select Move the cursor to the [Grid]...
Page 124 5.4 Set the print contents Print contents setting → To open the screen: Press the SYSTEM [Printer] sheet ⇒ p.114) ⇒ p.115) Select the horizontal axis (time axis) display Select value. Time* Print the time from trigger event (unit is Move the cursor to the [Time Value] item.
Page 125 5.4 Set the print contents Set the upper and lower limit value Select Move the cursor to the [Up/Low Print] item. Do not print upper and lower limits. (default setting) <Print Example> Print upper and lower limits. Upper and Lower Limit Set the zero-position comment Select Move the cursor to the...
Page 126: Miscellaneous Printing Functions
5.5 Miscellaneous Printing Functions 5.5 Miscellaneous Printing Functions You can produce a hard copy of the screen display, perform report printing or list printing. 5.5.1 Screen Hard Copy To print the hardcopy of the screen, display the screen to be printed, and then execute the "Print Screen"...
Page 127: List Print
5.5 Miscellaneous Printing Functions 5.5.3 List Print This function prints out function status information and channel setting information in list format. The ⇒ See: "Print a list of settings" ( p.112 list settings are the same as for the List function. ( Execute the "Send Print Key"...
Page 128 5.5 Miscellaneous Printing Functions...
Page 129: Waveform Screen Monitoring And Analysis
Waveform Screen Monitoring Chapter 6 and Analysis Analytical operations such as display magnification, compression, and search are available on the Waveform screen. Opening the Waveform screen [DISP] Click in the right-click menu. A cursor B cursor Scroll bar (p.118) (p.118) (p.123) Upper Limit Value (p.132)
Page 130: Reading Measurement Values (Using The A/B Cursors)
6.1 Reading Measurement Values (Using the A/B Cursors) 6.1 Reading Measurement Values (Using the A/ B Cursors) • Time difference, frequency and potential difference (and when scaling is enabled, scaling values) can be read as numerical values using the A/B cursors on the Waveform screen. The cursors also allow specifying the calculation and X-Y synthesis range.
Page 131 6.1 Reading Measurement Values (Using the A/B Cursors) If numerical values are hard to read Right-click and select [DISP] to enable display selection. You can display the wave- form and numerical values separately. See: "6.7.3 Switching the Waveform Display Width" (p.133) If A/B cursors are activated but do not show up on screen The position of the A/B cursors can be checked on the scroll bar.(p.123) If the cursor type is...
Page 132 6.1 Reading Measurement Values (Using the A/B Cursors) Reading Measurement Values on Waveform Screen (for 1, 2, 4, 8, 16 screens) → To open the screen: Right-click and select [DISP] Waveform screen <Screen display (time axis cursor)> A Cursor B Cursor Values Between Cursor A Cursor B...
Page 133 6.1 Reading Measurement Values (Using the A/B Cursors) Reading Measurement Values on Waveform Screen (for X-Y1, 4 screens) → To open the screen: Right-click and select [DISP] Waveform screen <Screen display (X axis measurement value)> Cursor A Value X-Y synthesis of channel 1 and channel 2 waveform Channel B Cursor A Cursor...
Page 134: Specifying A Waveform Range (A/B Cursor)
6.2 Specifying a Waveform Range (A/B Cursor) 6.2 Specifying a Waveform Range (A/B Cursor) When the waveform is shown as a time display, the range can be specified with the div cursor or Trace cursor. The specified range will be used for file saving, X-Y synthesis, and numerical calculation. The range selection will be retained also when the waveform display format is changed.
Page 135: Moving The Waveform Display Position
6.3 Moving the Waveform Display Position Moving the Waveform Display Position This applies to the Memory function and Recorder Function. 6.3.1 About Display Position From the scroll bar you can verify the relative position and size of the displayed portion of a wave- form within the overall recorded waveform.
Page 136: Moving The Position
6.3 Moving the Waveform Display Position 6.3.3 Moving the Position You can display the waveform position you wish to view immediately by specifying it with the mouse. Procedure → → icon → To open the screen: Right-click and select [DISP] Waveform screen Left-click the [WAVE]...
Page 137: Performing Waveform X-Y Synthesis
6.4 Performing Waveform X-Y Synthesis Performing Waveform X-Y Synthesis This applies to the Memory function. • To perform waveform X-Y synthesis, go to the Status screen, select the [Status] sheet, and set to X-Y1 screen or X-Y4 screen. By assigning any analog channel to the X axis and Y [Format] axis, up to 8 X-Y combo displays can be generated.
Page 138 6.4 Performing Waveform X-Y Synthesis Procedure → → → To open the screen: Right-click and select [DISP] Waveform screen Right-click and select [CH.SET] X-Y settings window Set the waveform color in the graph display. Select Waveform display is off. If [Save Channel] Move the flashing cursor to the graph color item to set, set to...
Page 139: Magnifying And Compressing Waveforms
6.5 Magnifying and Compressing Waveforms Magnifying and Compressing Waveforms 6.5.1 Magnifying and Compressing Horizontal Axis (Time Axis) This applies to the Memory function and Recorder function. (However, with the Recorder function, waveform magnification is not available.) Data details can be observed by magnifying the waveform along the horizontal axis (time axis). Also, by compressing the time axis, overall waveform fluctuations can be readily seen.
Page 140: Zoom Function (Magnifying A Section Of The Horizontal Axis (Time Axis))
6.5 Magnifying and Compressing Waveforms Zoom Function (Magnifying a Section 6.5.2 of the Horizontal Axis (Time Axis)) This applies to the Memory function only. A magnified section of a waveform can be displayed together with the unmagnified view by splitting the screen horizontally.
Page 141: Magnifying And Compressing Vertical Axis (Voltage Axis)
6.5 Magnifying and Compressing Waveforms To view the entire waveform (Memory function only) Move the flashing cursor to the ratio item in the settings window and select [All Wave]. The waveform information for the entire recording length is displayed. Description About logic waveform display When the Zoom function is enabled, and the logic waveform display position is at less than [50pos], the logic waveform will not be displayed.
Page 142: Monitoring Input Levels (Level Monitor)
6.6 Monitoring Input Levels (Level Monitor) 6.6 Monitoring Input Levels (Level Monitor) All input waveform levels can be monitored in real time. Analog channels and logic channels can be displayed at the same time. 6.6.1 Level Monitor Procedure → To open the menu: Right-click and select [DISP] Display Menu Selecting...
Page 143: Numerical Value Monitoring (Dmm Display)
6.6 Monitoring Input Levels (Level Monitor) 6.6.2 Numerical Value Monitoring (DMM Display) Input values can be monitored as numerical values in the same way as with a DMM (digital multim- eter). Procedure → To open the screen: Right-click and select [DISP] Left-click the [DMM]...
Page 144: Switching The Waveform Screen Display (Display Menu)
6.7 Switching the Waveform Screen Display (Display Menu) 6.7 Switching the Waveform Screen Display (Display Menu) The display menu allows you to bring up additional information such as upper/lower limit value indi- cation and comment display. It also allows you to set the waveform display width. See: About level monitor (p.130) Procedure...
Page 145: Switching The Waveform Display Width
The function is also active for the Channel settings window and Trigger settings window. 6.7.4 Switching the Format (MR8741 Only) The screen changes each time you click [Format]. 6.7.5 Changing the Monitor Values (MR8740 Only) Click [Change Ch] to change the channels displayed at the bottom of the screen (CH1 to CH16 and CH17 to CH32).
Page 146: Seeing Block Waveforms
6.8 Seeing Block Waveforms 6.8 Seeing Block Waveforms This applies to the Memory function only. If recorded by memory division, the usage status of blocks can be checked. Furthermore, the desired block can be selected and the recorded waveform can be displayed. When memory division is not used, depending on the record length, it is possible to display the last 16 measured waveforms.
Page 147: Chapter 7 Utility Functions
Chapter 7 Utility Functions Various utility functions are described in the section. Utility Functions Applicable measurements and settings Adding Comments (p.136) • Displaying Waveforms During Recording (p.143) Converting input values (Scaling) (p.146) • Overlaying with past recorded waveforms (p.144) Setting the waveform display freely(p.153) Detailed input module settings (p.159) Fine Adjustment of Input Values...
Page 148: Adding Comments
7.1 Adding Comments 7.1 Adding Comments This section explains how to enter title comments and channel comments. Information about alphanumeric input is also provided. 7.1.1 Adding a Title Comment When you enter a title comment, it can be displayed at the top of the Waveform screen. (Allowed number of characters: up to 40) Procedure →...
Page 149: Adding A Channel Comment
7.1 Adding Comments 7.1.2 Adding a Channel Comment Comments added for each channel can be displayed on-screen. (Allowed number of characters: up to 40) To display a comment on the screen Right-click and select [DISP] , and then select a comment. See: "6.7.2 Showing Comments On Waveform Screen"...
Page 150 7.1 Adding Comments Enter the comment for each logic channel. Select Input Enter comment text. Move the flashing cursor to the [Comment] See: "Entering Text" (p.139) item, and then click. Clear Clear entered information Undo Return to condition of preceding step To select from preset terms Clicking [PRESET]...
Page 151: Alphanumeric Input
7.1 Adding Comments 7.1.3 Alphanumeric Input Move the flashing cursor to the setting item for which to make the input, and choose the content with the mouse. Entering Text Move the flashing cursor to the field for entering text with the mouse, and then click [Enter Char].
Page 152 7.1 Adding Comments Entering Text From a Term List Or History List While the virtual keyboard is displayed, clicking [Term List] displays preregis- tered words. Also, clicking [History List] displays words entered in the past. Move the flashing cursor to the comment field and select [Enter Char].
Page 153 7.1 Adding Comments Entering Numerals By Up/Down Action Move the flashing cursor to the numeric input field and select [Up-Down]. A virtual keyboard for digit input appears. • Click △▽ in the displayed up-down input window. This allows you to change the value of the corresponding digit. •...
Page 154 7.1 Adding Comments Entering Numerals With a Numeric Keypad Move the flashing cursor to the numeric input field and select [Tenkey Entry]. A virtual keyboard for numeric keypad input appears. Use the virtual keyboard for numeric keypad input. : Delete 1 character : Delete all characters : Exponent entry µ...
Page 155: Displaying Waveforms During Recording (Roll Mode)
7.2 Displaying Waveforms During Recording (Roll Mode) 7.2 Displaying Waveforms During Recording (Roll Mode) This applies to the Memory function only. You can display the waveform at the same time as the data are acquired. • If measurement is carried out at low sampling speed settings using the Memory function, a long time will be required until data for the entire recording length have been collected.
Page 156: Displaying New Waveforms Over Past Waveforms (Overlay)
7.3 Displaying New Waveforms Over Past Waveforms (Overlay) 7.3 Displaying New Waveforms Over Past Waveforms (Overlay) This applies to the Memory function only. Displayed waveforms are retained on-screen and overlaid with new waveforms. • Use this to compare new waveforms with those recorded immediately before. (When the trigger mode is [Repeat] or [Auto]) (p.187)
Page 157 7.3 Displaying New Waveforms Over Past Waveforms (Overlay) Description When the Overlay function is enabled ([Auto] or [Manual]). • The Roll Mode function (p.143) and Overlay functions (p.144) cannot both be enabled at the same time. When the Roll Mode is enabled, the Overlay func- tion is automatically set [Off].
Page 158: Converting Input Values (Scaling Function)
7.4 Converting Input Values (Scaling Function) 7.4 Converting Input Values (Scaling Function) About the Scaling Use the scaling function to convert the measured voltage units output from a sensor Function to the physical units of the parameter being measurement. Hereafter, "scaling" refers to the process of numerical value conversion using the Scaling function.
Page 159 P2]. • When saving text or results of numerical calculation, some characters and symbols used for display on the instrument will be converted as follows. (MR8740/MR8741 display → saved string) • → ^2, → ^3 , μ → ~u, Ω→ ~o, ε→ ~e, °→ ~c , ±→...
Page 160: Scaling Setting Examples
7.4 Converting Input Values (Scaling Function) To reset Scaling settings: Move the flashing cursor to the [Setting], and select [Reset]. To copy the scaling setting to another channel The Channel screen - [Scaling] sheet can be used to copy a setting. See: "7.8 Copying settings to other channels (calculation No.) (Copy function)"...
Page 161 7.4 Converting Input Values (Scaling Function) However, you may need to switch the vertical axis (voltage axis) range to suit actual input values. For example, to display ±0.2 V at full scale, set the vertical display to 20 mV per division (the instrument's 20 mV/div range) With scaling, signals from the sensor are acquired as current values.
Page 162 7.4 Converting Input Values (Scaling Function) When a calibration factor is stated in the strain gauge transducer inspec- tion records ̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲̲ Set the [Method] item on the [Scaling] sheet to [Ratio]. Example 3 Measure using a strain gauge transducer with a calibration factor of 0.001442 G / 1 x 10 strain , and display the measured data in [G] units.
Page 163 7.4 Converting Input Values (Scaling Function) object. The conversion method depends on the conditions in which the strain gauge is used. See: "Appendix 2.6 Scaling Method When Using Strain Gauges"(p.A9)
Page 164 7.4 Converting Input Values (Scaling Function) Using the dB value Example 5 Acquiring the conversion rate to convert 40 dB input to 60 dB 1. For scaling, set the [Method] to [Ratio]. 2. Point the flashing cursor to the conversion rate setting and select [dB Scal- ing].
Page 165: Variable Function (Setting The Waveform Display Freely)
7.5 Variable Function (Setting the Waveform Display Freely) Variable Function (Setting the Waveform Dis- play Freely) The waveform height and display position can be arbitrarily set along the vertical axis (voltage axis) Precautions for using the Variable Function • Verify that the vertical axis (voltage axis) range is set properly for the input sig- nal.
Page 166 7.5 Variable Function (Setting the Waveform Display Freely) Make the Valiable Function Setting per channel _____________________ Procedure → To open the screen: Right-click and select [CHAN] [Each Ch] sheet Enable the Variable function. Move the flashing cursor to the [Variable], and select [On]. Set the display range per division Move the flashing cursor to the [Range(div)], and enter numeri- cal value.
Page 167 7.5 Variable Function (Setting the Waveform Display Freely) Displaying All Channels for Making the Variable Function Setting ______ Procedure → → → To open the screen: Right-click and select [DISP] Waveform screen Right-click and select [CH.SET] Display range window Enable the Variable function. Move the flashing cursor to the [Variable], and select [On].
Page 168: Fine Adjustment Of Input Values (Vernier Function)
7.6 Fine Adjustment of Input Values (Vernier Function) 7.6 Fine Adjustment of Input Values (Vernier Function) Fine adjustment of input voltage can be performed arbitrarily on the Waveform screen. When recording physical values such as noise, temperature and acceleration using sensors, amplitude can be adjusted to facilitate calibration.
Page 169: Inverting The Waveform (Invert Function)
7.7 Inverting the Waveform (Invert Function) 7.7 Inverting the Waveform (Invert Function) This applies to the analog channels only. You can invert the plus and minus sides of the waveform. Example: With a spring or similar, if pulling it towards the observer is taken as the minus direction and pushing it away from the observer as the plus direction, the output will be minus (negative) for pulling and plus (positive) for pushing.
Page 170: Copying Settings To Other Channels (Calculation No.) (Copy Function)
7.8 Copying settings to other channels (calculation No.) (Copy function) 7.8 Copying settings to other channels (calcula- tion No.) (Copy function) At the following screens, settings can be copied to other channels and calculation No. (When the FFT function is used). •...
Page 171: Making Detailed Settings For Input Modules
7.9 Making Detailed Settings for Input Modules 7.9 Making Detailed Settings for Input Modules Using the [Each Ch] sheet accessed from the Channel screen, you can make detailed settings. Opening the [Each Ch] sheet, Making a Channel Selection Shows [CHAN] Click in the right- the chan-...
Page 172: Making Settings For The Anti-Aliasing Filter (A.a.f.) (8968 High Resolution Unit)
7.9 Making Detailed Settings for Input Modules 7.9.1 Making Settings for the Anti-Aliasing Filter (A.A.F.) (8968 High Resolution Unit) See: Opening the [Each Ch] sheet, Making a Channel Selection (p.159) A.A.F Enable the anti-aliasing filter to remove aliasing distortion. The cutoff frequency automatically changes according to the time axis range or (when the FFT function is used) the frequency range setting.
Page 173: Settings For The 8967 Temp Unit
7.9 Making Detailed Settings for Input Modules 7.9.3 Settings for the 8967 TEMP Unit See: Opening the [Each Ch] sheet, Making a Channel Selection (p.159) Mode Set to match the type of thermocouple being used. Select Selections Measurement Range Selections Measurement Range Temp- K Temp- R...
Page 174 7.9 Making Detailed Settings for Input Modules Renew Data The data refresh rate can be set to Fast, Normal, or Slow. (Data Refresh) The default setting is [Normal]. This allows stable measurement while removing noise. For quicker response, select [Fast], but note that this will make the mea- surement more susceptible to noise.
Page 175: Settings For The 8969 And U8969 Strain Unit
7.9 Making Detailed Settings for Input Modules 7.9.4 Settings for the 8969 and U8969 Strain Unit The 8969 Strain Unit and U8969 Strain Unit can perform auto balance. When auto balance is performed, the reference output level of the conversion unit can be matched with the specified zero position.
Page 176: Settings For The 8970 Freq Unit
7.9 Making Detailed Settings for Input Modules 7.9.5 Settings for the 8970 Freq Unit When the display of standard logic channels (LA and LB) is on, the 8970 Freq Unit installed on unit 1 can no longer be used. See: Opening the [Each Ch] sheet, Making a Channel Selection (p.159)
Page 177 7.9 Making Detailed Settings for Input Modules Slope For each measurement mode, set the direction the specified level is exceeded. Select Selections Description ↑ Rises above the specified level are detected. (default setting) ↓ Drops below the specified level are detected. Devide Determines the frequency for each set pulse.
Page 178 7.9 Making Detailed Settings for Input Modules Level This is enabled only when [Mode] [Pulse Width] or [Duty]. In pulse width/ duty rate measurements, set which level is detected when the threshold is exceeded. Select Selections Description High Measures above the threshold value. (default setting) Measures below the threshold value.
Page 179: Settings For The 8971 Current Unit
Conversion Cable, the instrument recognizes that as an 500 A AC/DC sensor is connected; set the scaling ratio to 2.00. Range Select Selections Description Current measurement (Default setting) RMS current measurement • 8971 Current Unit cannot be used with MR8741. • With MR8740, up to four 8971 Current Units can be used.
Page 180: Settings For The 8972 Dc/Rms Unit
7.9 Making Detailed Settings for Input Modules 7.9.7 Settings for the 8972 DC/RMS Unit See: Opening the [Each Ch] sheet, Making a Channel Selection (p.159) Mode Switches between voltage measurement and RMS measurement. Select Selections Description Voltage measurement (default setting) RMS measurement Response Response can be set to three speeds: Fast, Normal and Slow.
Page 181: Settings For The Mr8990 Digital Voltmeter Unit
7.9 Making Detailed Settings for Input Modules 7.9.8 Settings for the MR8990 Digital Voltmeter Unit • When the MR8990 Digital Voltmeter Unit is installed on unit 1 (unit 1 or unit 2 in the case of MR8741), the standard logic can no longer be used. •...
Page 182 7.9 Making Detailed Settings for Input Modules Select Selections Description Calibration and synchronization are not performed. Performs calibration and synchronization. Synchroniza- Performs only synchronization between channels. tion • The calibration time is approximately 150 ms. That period becomes a waiting time in which measurement is not performed.
Page 183: Model U8974 High Voltage Unit Settings
7.9 Making Detailed Settings for Input Modules 7.9.9 Model U8974 High Voltage Unit Settings See: "Opening the [Each Ch] sheet, Making a Channel Selection" (p.159) Mode Switches between voltage measurement and RMS measurement. Select Selections Description Voltage measurement (Default setting) RMS measurement Response The response time for RMS measurement can be set to three speeds: Fast, Nor-...
Page 184: Mr8790 Waveform Generator Unit Settings
7.9 Making Detailed Settings for Input Modules 7.9.10 MR8790 Waveform Generator Unit Settings Channels installed with Model MR8790 cannot be measured. See: "Opening the [Each Ch] sheet, Making a Channel Selection" (p.159) Type Selects the waveform type. Select Selections Description DC output (Default setting) Sine Sine wave output...
Page 185 7.9 Making Detailed Settings for Input Modules When Off Sets the output terminal status when the output is OFF. Select Selections Description Open Opens the output terminals, separating them from internal circuits. Short-circuits the output terminals, separating them from internal Short circuits.
Page 186: Mr 8971 Pulse Generator Unit Settings
7.9 Making Detailed Settings for Input Modules 7.9.11 MR 8971 Pulse Generator Unit Settings Channels installed with Model MR8791 cannot be measured. See: "Opening the [Each Ch] sheet, Making a Channel Selection" (p.159) Mode Select the type of output. Select Selections Description Pulse...
Page 187 7.9 Making Detailed Settings for Input Modules Output Turns waveform output On/Off. Select Selections Description Outputs waveform. Does not output the waveform. Control Sets the waveform output. Select Selections Description Starts output. Pauses output. While output is paused, the output at the time PAUSE [PAUSE] was pressed will be output.
Page 188: U8793 Arbitrary Waveform Generator Unit Settings
7.9 Making Detailed Settings for Input Modules 7.9.12 U8793 Arbitrary Waveform Generator Unit Set- tings Channels installed with U8793 cannot be measured. See: "Opening the [Each Ch] sheet, Making a Channel Selection" (p.159) Type Selects the waveform type. Select Selections Description DC output (Default setting) Sine...
Page 189 7.9 Making Detailed Settings for Input Modules Offset For DC output: Sets DC voltage. For sine wave output: Sets the offset voltage. The output voltage with guaranteed accuracy is the sum of the amplitude and the offset, between -10 V and +10 V. If the sum of the amplitude and the offset is set outside the guaranteed accuracy range, parts of the waveform will be clamped to the upper limit, approximately +16 V and the lower limit, approximately -11 V.
Page 190 7.9 Making Detailed Settings for Input Modules Method Selects the control method for waveform output. Select Selections Description Manual Restricts control of signal output to Signal Generation screen. Sync. Augments manual control with signal output in synchronization with the start and end of measurement. START key: Starts output when measurement starts.
Page 191: Register The Waveform In The U8793 Arbitrary
Register the Waveform in the U8793 Arbitrary Waveform Generator Unit 7.10 7.10 Register the Waveform in the U8793 Arbitrary Waveform Generator Unit You can register waveform in the Model U8793. Registered waveforms can be output from the Model U8793. Procedure To open the screen: press the CHAN key to open the Channel screen, and then select...
Page 192 Register the Waveform in the U8793 Arbitrary Waveform Generator Unit 7.10 Register From Files Select [Register..from file] using keys Select [to File scrn] using the CH.SET key. Move to the file screen. Select arbitrary waveform file WFG or TFG on the file screen and then register.
Page 193 Register the Waveform in the U8793 Arbitrary Waveform Generator Unit 7.10 Register From Measured Data Select [Register..from measurement data] using keys Select the waveform to be registered using keys. Select Selections Description Analog Ch Registers the waveform of the measured analog channel. Wave Calc.
Page 194 Register the Waveform in the U8793 Arbitrary Waveform Generator Unit 7.10 Set the conversion ratio. Amplify or attenuate a voltage value of the measured data to register it. 0.001 times to 100 times Enter a data name. Register as an arbitrary waveform data in the U8793 memory. Enter a [Name].
Page 195: Save The Waveforms Registered In The Model U8793 In The Media
7.11 Save the Waveforms Registered in the Model U8793 in the Media 7.11 Save the Waveforms Registered in the Model U8793 in the Media You can save the arbitrary waveform data registered in U8793 in the media. For saving methods, refer to "4.2.5 Save Waveform Output Data to the Media" (p.96). 7.12 Setting Output Waveform Parameters Parameters (frequency, amplitude, and offset) for the output waveform that was configured on the Generator screen (signal generation setting screen) can be changed on the Waveform screen.
Page 196 7.12 Setting Output Waveform Parameters...
Page 197: Chapter 8 Trigger Settings
Chapter 8 Trigger Settings Triggering is the process of controlling the start and stop of recording by specific signals or condi- tions (criteria). When recording is started or stopped by a specific signal, we say the trigger is "applied" or "triggering occurs". Trigger settings are made in the Trigger settings window of the Waveform screen.
Page 198: Setting Workflow
8.1 Setting Workflow 8.1 Setting Workflow The procedure for making trigger settings is as follows. Trigger Mode Settings Set whether to continue to accept triggers after measuring. (p.187) Make trigger source-related settings. Trigger Type Settings • Analog trigger (p.188) • Logic trigger (p.193) •...
Page 199: Setting The Trigger Mode
8.2 Setting the Trigger Mode 8.2 Setting the Trigger Mode Set whether to continue to accept triggers after measuring. If all trigger sources are disabled (Off, with no trigger setting), measurement starts immediately (free-running). Procedure To open the screen: Right-click and select [DISP] →...
Page 200: Triggering By Analog Signals
8.3 Triggering by Analog Signals 8.3 Triggering by Analog Signals 8.3.1 Analog Trigger Settings and Types The steps for making settings and selecting the type of analog trigger are described below. The Trigger settings window ([Analog Trg.] sheet) is used. An analog trigger cannot be set for the channel of MR8990 Digital Voltmeter Unit.
Page 201 8.3 Triggering by Analog Signals 1. Level Trigger ________________________________________________ A trigger is applied when an input signal crosses the specified trigger level (threshold voltage). Trigger Level Input Waveform ↑ ↓ Trigger Slope: In this manual, indicates a "trigger point", as the time at which a trigger is applied.
Page 202 8.3 Triggering by Analog Signals 3. Voltage Sag Trigger ( only) _____________________________ Triggering occurs when the voltage peak drops below a preset level for more than half a cycle. The allowable time axis range is 20 μs - 50 ms/div. 1/2 Period Trigger Level Type...
Page 203 8.3 Triggering by Analog Signals 5. Glitch Trigger( only) ___________________________________ Triggering occurs when the input signal crosses the trigger level (threshold volt- age) if its pulse width is shorter than the specified width. Glitch Width Trigger Level Input Waveform ↑ Trigger Slope: [ Type Parameters...
Page 204 8.3 Triggering by Analog Signals Trigger Level 2.5 V Filter Width Event Count Description About period range settings The period range settings for period triggering depend on the sampling period (sampling rate). (Changing the timebase also changes the period setting range.) The sampling rate setting can be verified on the Status screen - Status sheet.
Page 205: Triggering By Logic Signals (Logic Trigger)
8.4 Triggering by Logic Signals (Logic Trigger) 8.4 Triggering by Logic Signals (Logic Trigger) The steps for making settings and selecting the type of logic trigger are described below. The Trigger settings window ([Logic Trig] sheet) is used. • Input signals on logic channels serve as the trigger source. Triggering occurs when the specified trigger pattern and logical probe combining criteria (AND/ OR) are met.
Page 206 8.4 Triggering by Logic Signals (Logic Trigger) 3. Trigger Pattern Make the settings of the logic trigger pattern. Select Ignore signal. (default setting) Trigger at LOW signal level. Trigger at HIGH signal level. To copy the setting to another channel The Trigger settings window ([Logic Trig] sheet) can be used to copy a setting.
Page 207: Trigger By Timer Or Time Intervals (Timer Trigger)
8.5 Trigger by Timer or Time Intervals (Timer Trigger) 8.5 Trigger by Timer or Time Intervals (Timer Trigger) Set this to record at fixed times. • Triggering occurs at the specified interval from the specified Start time until the Stop time. •...
Page 208 8.5 Trigger by Timer or Time Intervals (Timer Trigger) Description About start and stop times • Start and Stop times should be set as times elapsed since the measurement was started. • When the trigger mode is [Single] and the timer trigger is [On], only one timer trigger specified as the Start trigger is recognized.
Page 209 8.5 Trigger by Timer or Time Intervals (Timer Trigger) When a trigger is applied from a trigger source other than a timer trigger Trigger sources set to On are all enabled. However, trigger timing depends on the trigger source settings. •...
Page 210: Synchronizing Between Blocks (Mr8740 Only)
8.6 Synchronizing Between Blocks (MR8740 Only) The input signal from another block can be used as a trigger source. Use this to synchronize between block I and block II of MR8740 Memory HiCorder. Procedure → Waveform screen → Right-click and select →...
Page 211: Applying An External Trigger (Mr8741 Only)
8.7 Applying an External Trigger (MR8741 Only) Applying an External Trigger (MR8741 Only) An external signal applied to the External Control terminal can serve as a trigger source (External Trigger). It can also be used to synchronously drive parallel triggering of multiple MR8741s. Procedure To open the screen: Right-click and select [DISP]...
Page 212: Pre-Trigger Settings
8.9 Pre-Trigger Settings 8.9 Pre-Trigger Settings This applies to the Memory function, and FFT function only. By setting a portion (number of divisions or percentage) of the recording length to occur before trig- gering, the waveform is recorded before as well as after the trigger point. You can also set the duration of a waveform to be recorded after a trigger point.
Page 213 8.9 Pre-Trigger Settings Description About pre-triggering and the recording period (recording length) Trigger Point Pre-Trigger setting examples 95% of the recording length is recorded before the trigger point 50% of the recording length is recorded before and 50% after the trigger point -95% 95% of the recording length is recorded after the trigger point •...
Page 214: Setting Trigger Acceptance (Trigger Priority)
8.9 Pre-Trigger Settings Setting Trigger Acceptance 8.9.2 (Trigger Priority) This applies to the Memory function only. You can set whether a trigger is recognized (accepted) if trigger criteria are met during this period. • When pre-triggering is enabled, trigger events are normally ignored for a cer- tain period after measurement starts (while recording the specified pre-trigger period).
Page 215: Setting Trigger Timing
8.10 Setting Trigger Timing 8.10 Setting Trigger Timing This applies to the Memory function only. Set waveform recording operation when a trigger event occurs. Procedure key → Waveform screen → Press the key → Trigger settings window To open the screen: Press the DISP TRIG.SET Move the flashing cursor to the...
Page 216: Setting Combining Logic (And/Or) For Multiple Trigger Sources
8.11 Setting Combining Logic (AND/OR) for Multiple Trigger Sources 8.11 Setting Combining Logic (AND/OR) for Multiple Trigger Sources Analog, logic, external and timer trigger criteria can be combined by AND/OR logic to define com- plex trigger criteria. Procedure To open the screen: Right-click and select [DISP] → Waveform screen → Right-click and select →...
Page 217: Using Trigger Settings To Search Measurement Data
8.12 Using trigger settings to search measurement data 8.12 Using trigger settings to search measurement data Trigger settings can be used to search measurement data. Locations that match the set trigger criteria in the measurement data are searched for and displayed sequentially.
Page 218 8.12 Using trigger settings to search measurement data Description Search results Locations that match the criteria are displayed in the center of the screen and an S mark is displayed in this position. When no matches are found, a message stating that no matches were found is dis- played.
Page 219: Numerical Calculation Functions
Numerical Calculation Chapter 9 Functions Numerical calculations can only be used with the Memory function. Results calculated from the acquired waveform are displayed as numerical values on the Waveform screen. Numerical calculation settings are made on the Status screen - [Num Calc] sheet.
Page 220: Numerical Calculation Workflow
9.1 Numerical Calculation Workflow 9.1 Numerical Calculation Workflow There are two different ways of performing calculation. • Calculating While Measuring: Settings for numerical calculation must be made before the measurement. • Applying Calculations to Existing Data: Calculation is possible for waveform data after measurement is completed, and for data saved on media.
Page 221 9.1 Numerical Calculation Workflow Applying Calculations to Existing Data (Load the Data) (To load measurement data from storage media for calcu- (p.97) lation) Make calculation settings on the Numerical Calculation (p.210) Make Calculation Settings sheet ([Num Calc] sheet) When judging based on calculation results: (p.214) Execute Calculation Select...
Page 222: Settings For Numerical Value Calculation
9.2 Settings for Numerical Value Calculation Settings for Numerical Value Calculation Procedure → To open the screen: Right-click and select [STATUS] [Num Calc] sheet Enable the Numerical Calculation function. Move the flashing cursor to the [Numerical Calc] item. Select [On]. Specify the Numerical Calculation range.
Page 223 9.2 Settings for Numerical Value Calculation When saving calculation results during Select the channel for calculations. measurement Move the flashing cursor to the item for the calculation tar- Settings must be made before the mea- get, and select the channel. surement.
Page 224 9.2 Settings for Numerical Value Calculation Parameter table________________________________________________ Calculation Type Parameter Parameter description Period L (Level) Calculation is based on the interval (time) when this level is crossed. Frequency Only when the measurement signal has crossed the level and has not crossed the Pulse Width F (Filter) level again within the specified filter width, it is taken as a valid event.
Page 225: Displaying Numerical Calculation Results
9.2 Settings for Numerical Value Calculation 9.2.1 Displaying Numerical Calculation Results Numerical calculation results are displayed on the Waveform screen Calculation Results Switch the waveform display width in the [DISP] If the display is hard to view because of menu. overlapping numerical values and wave- Numerical values and waveforms are displayed forms...
Page 226: Judging Calculation Results
9.3 Judging Calculation Results 9.3 Judging Calculation Results Set the judgment criteria (upper and lower threshold values) by which to judge numerical calculation results. Judgment criteria can be set for every numerical calculation. Waveform acquisition processing depends on the trigger mode setting (Single or Repeat) and the criteria specified to stop measuring upon judgment (GO, NG or GO &...
Page 227 9.3 Judging Calculation Results Procedure → To open the screen: Right-click and select [STATUS] [Num Calc] sheet Make calculation settings. (p.210) Enable the judgment function. Lower limit Upper limit value value Move the flashing cursor to the [Judge] setting for Calcula- tion No.
Page 228: Display Of Judgment Results And Signal Output
9.3 Judging Calculation Results 9.3.1 Display of Judgment Results and Signal Output Judgment results of numerical calculations are displayed on the Waveform screen. Within the judgment threshold range: GO judgment Out of the judgment threshold range: NG judgment (displayed in red) When the judgment result is GO •...
Page 229: Saving Numerical Calculation Results
9.4 Saving Numerical Calculation Results 9.4 Saving Numerical Calculation Results Calculate and automatically save during data acquisition. Before measurement begins, the calcula- tion settings need to be set. When using auto save during measurement, do not remove the storage media specified as the save destination until the measurement operation is completely finished.
Page 230 9.4 Saving Numerical Calculation Results Example for saving numerical calculation results ___________________ If you save numerical calculation results, characters or display items used on the instrument are converted as shown below. Characters used on the instrument Saved characters μ Ω °...
Page 231: Numerical Calculation Type And Description
9.5 Numerical Calculation Type and Description 9.5 Numerical Calculation Type and Description Numerical Calculation Description Type Obtains the average value of waveform data. AVE: Average value Average ∑ -- - n: Data count di: Data on channel number i Obtains the RMS value of waveform data. If Scaling is enabled, calculations are applied to the waveform after scaling.
Page 232 9.5 Numerical Calculation Type and Description Numerical Calculation Description Type The rise time of the acquired waveform from A% to B% (or fall time from B% to A%) is ob- tained by calculation using a histogram (fre- quency distribution) of the 0 and 100% levels of the acquired waveform.
Page 233 9.5 Numerical Calculation Type and Description Numerical Calculation Description Type Finds the point where the signal crosses a speci- fied level from the start of the calculation range, Level Time to Level and obtains the time elapsed from the last trigger (Time-Lev) event.
Page 234 9.5 Numerical Calculation Type and Description...
Page 235: Waveform Calculation Functions
Waveform Calculation Chapter 10 Functions 9 10 Waveform calculations can only be used with the Memory function. A pre-specified calculation equation is applied to acquired waveform data, and the calculation results are displayed as a waveform on the Waveform screen. Waveform calculation settings are made on the Status screen - [Wave Calc] sheet.
Page 236: Waveform Calculation Workflow
10.1 Waveform Calculation Workflow 10.1 Waveform Calculation Workflow There are two different ways of performing calculation. • Calculating While Measuring: Settings for waveform calculation must be made before the measurement. • Applying Calculations to Existing Data: Calculation is possible for waveform data after measurement is completed, and for data saved on media.
Page 237 • Save: [SAVE] as follows • The maximum record length that can be calculated is MR8740 2,000div MR8741 To perform calculation for waveforms measured at longer record lengths, save to files in sections at a range shorter than maximum record length, reload to this instrument and then calculate.
Page 238 10.1 Waveform Calculation Workflow When specifying a waveform range for calculation: Before executing a calculation, specify the calculation range using the A/B cursors (div or Trace cursors) on the Waveform screen. Set the calculation range on the [Wave Calc] sheet to [A-B Wave].
Page 239: Settings For Waveform Calculation
10.2 Settings for Waveform Calculation 10.2 Settings for Waveform Calculation 9 10 Procedure → To open the screen: Right-click and select [STATUS] [Wave Calc] sheet Enable the Waveform Calculation function. Move the flashing cursor to the [Wave Calculation] item, and select [On]. Specify the waveform calculation range.
Page 240: Displaying The Waveform Calculation Results
10.2 Settings for Waveform Calculation [Confirm]. When finished entry, select The entered equation is displayed in the field. [Equation] The scale (maximum and minimum vales) of the calculation results has a default setting of [Auto]. If you want to scale the results, set the maximum and minimum values under [Manual].
Page 241 10.2 Settings for Waveform Calculation About calculation equations _____________________________________ Operators Operator Name Operator Name 9 10 Absolute Value DIF2 Derivative Exponent INT2 Integral Common Logarithm Sine Square Root Cosine Moving Average Tangent Movement parallel to the ASIN Inverse Sine time axis Derivative ACOS Inverse Cosine...
Page 242: Setting Constants
10.2 Settings for Waveform Calculation 10.2.2 Setting constants Procedure → To open the screen: Right-click and select [STATUS] [Wave Calc] sheet Move the flashing cursor to the No. to be set as [CONST.]. Select an entry method, and enter the constant. Setting range: -9.9999E+29 to +9.9999E+29 See: "7.1.3 Alphanumeric Input"...
Page 243: Changing The Display Method For Calculated Waveforms
10.2 Settings for Waveform Calculation 10.2.3 Changing the display method for calculated waveforms 9 10 Procedure → To open the screen: Right-click and select [STATUS] [Wave Calc] sheet Calculation No. To copy settings between Calculation Nos.: Click the calculation No. Waveform Display range Upper and...
Page 244 10.2 Settings for Waveform Calculation Waveform Calcu- Calculate the RMS waveform from the instantaneous waveform The RMS values of the waveform input on Channel 1 are calculated and dis- lation Example played. This example describes the calculation of waveform data measured for one cycle over two divisions.
Page 245: Waveform Calculation Operators And Results
10.3 Waveform Calculation Operators and Results 10.3 Waveform Calculation Operators and Results 9 10 : ith member of calculation result data, d : ith member of source channel data Waveform Calculation Type Description Executes the corresponding arithmetic operation. Four Arithmetic Opera- tors ( +, -, *, / ) Absolute Value (ABS) (i = 1, 2, ..
Page 246 10.3 Waveform Calculation Operators and Results : ith member of calculation result data, d : ith member of source channel data Waveform Calculation Type Description When d > 1, ≤ ≤ When -1 = acos(d Arccosine (ACOS) π When d <...
Page 247 10.3 Waveform Calculation Operators and Results : ith member of calculation result data, d : ith member of source channel data Waveform Calculation Type Description First and second integrals are calculated using the trapezoidal rule. to d are the integrals calculated for sample times t to t 9 10 Calculation formulas for the first integral...
Page 248 10.3 Waveform Calculation Operators and Results...
Page 249: Memory Division
When using memory division, synchronization between blocks may not be possible in the following conditions. (MR8740 only) When using memory division, the trigger output (TRIG_OUT terminal output) may output the Low level or output erratically in the following conditions.
Page 250 Operations available from the [Memory Div] sheet • Waveforms can be recorded into individual blocks by dividing memory space into multiple blocks. • You can record waveforms beginning at any block (Start Block), choose which blocks to display (Display Block), or display multiple overlaid blocks (Reference Block). •...
Page 251: Recording Settings
11.1 Recording Settings 11.1 Recording Settings Procedure → To open the screen: Right-click and select [STATUS] [Memory Div] sheet Enable the Memory Division function. 10 11 Move the flashing cursor to the item. [Memory Div] Select [On]. Memory Division is disabled.(default setting) Memory Division is enabled.
Page 252: Display Settings
11.2 Display Settings 11.2 Display Settings Procedure → To open the screen: Right-click and select [STATUS] [Memory Div] sheet To display any block on the Waveform screen Set the display blocks Set after measurement is complete.(This can also be set on the Waveform screen (p.134).) Move the flashing cursor to the [Display Block]...
Page 253 11.2 Display Settings Getting Details on Each Block: The trigger time and measurement status of each block can be viewed on the list. [Map/List] [List] Move the flashing cursor to the , and select 10 11 Block No. A block can be selected with the mouse. You can move the flashing cursor to the Reference Block column to set a block’s on/off state as a Reference Block.
Page 254 11.2 Display Settings Difference Between Dead Times During Normal and Memory Division Recording When Auto Save is set for continuous triggering [Repeat] Anomalous phenomena occurring during dead times are not detected. Recording Dead Times Length Times during which sampling is inhibited due to internal processing or saving When the Trace Waveform Display is disabled (Off) during Memory Division recording Dead Times...
Page 255: Chapter 12 Fft Function
12.1 Overview and Features FFT Function Chapter 12 12.1 Overview and Features FFT analysis can only be used with the FFT function. 11 12 The FFT (Fast-Fourier Transform) functions provide frequency analysis of input signal data. Use these functions for frequency analysis of rotating objects, vibrations, sounds and etc. For details, refer to "Appendix 4 FFT Definitions"...
Page 256: Operation Workflow
12.2 Operation Workflow 12.2 Operation Workflow Installation & Connections Turn Power On "Chapter 2 Measurement Preparations" (p.35) Set the Function to FFT (p.245) Settings Measure with New Settings Measure with Existing Settings [Status] sheet Set FFT analysis (p.245) Set FFT analysis (p.245) [Status] Channel set- sheet...
Page 257: Setting Fft Analysis Conditions
12.3 Setting FFT Analysis Conditions 12.3 Setting FFT Analysis Conditions Status screen [Status] sheet Basic measurement configuration settings are performed on the . Measure- (p.261). ment configuration can be performed from the Waveform screen Opening the [Status] sheet 11 12 Select [STATUS] and then...
Page 258: Selecting The Data Source For Analysis
12.3 Setting FFT Analysis Conditions 12.3.2 Selecting the Data Source for Analysis Select the data to be used for FFT analysis. There are two analysis methods: analysis using new measurements and analysis of data measured using the memory function. Procedure →...
Page 259: Setting The Frequency Range And Number Of Analysis Points
12.3 Setting FFT Analysis Conditions 12.3.3 Setting the Frequency Range and Number of Analysis Points ___________________ About the frequency range and number of analysis points • The settings for the frequency range and number of analysis points determine the input signal acquisition time and frequency resolution. •...
Page 260 12.3 Setting FFT Analysis Conditions Relationship Between Frequency Range, Resolution and Number of Analysis Points Number of FFT Analysis Points Sampling Timebase 1,000 2,000 5,000 10,000 Range Sampling frequency [/div] [Hz] period Acquisi- Acquisi- Acquisi- Acquisi- [Hz] (MEM) Resolu- Resolu- Resolu- Resolu- tion...
Page 261: Thinning Out And Calculating Data
12.3 Setting FFT Analysis Conditions 12.3.4 Thinning Out and Calculating Data When performing FFT analysis of data measured using the memory function, the measurement data can be thinned before calculation. If the sampling frequency is too high and the expected results are not obtained, thin the data before calculation to increase the frequency resolution.
Page 262: Setting The Window Function
12.3 Setting FFT Analysis Conditions 12.3.5 Setting the Window Function The window function defines the segment of the input signal to be analyzed. Use the window function to minimize leakage errors. There are three general types of window functions: • Hann window •...
Page 263: Setting Peak Values Of Analysis Results
12.3 Setting FFT Analysis Conditions 12.3.6 Setting Peak Values of Analysis Results Either local or global maxima ([maximal]/ [maximum]) of the input signal and analysis results can be displayed on the Waveform screen. However, if Nyquist display is selected on the Status screen- [Status] sheet, no peak values are displayed.
Page 264: Averaging Waveforms
12.3 Setting FFT Analysis Conditions 12.3.7 Averaging Waveforms The averaging function calculates the average of the values obtained from multiple measurements of a peri- odic waveform. This can reduce noise and other non-periodic signal components. Averaging can be applied to a time-domain waveform or to a spectrum. Procedure →...
Page 265 12.3 Setting FFT Analysis Conditions When averaging time-domain waveform values: Waveforms are acquired and averaged within the time domain. After averaging, FFT calculation is performed. When the trigger mode is [Auto]: Data is acquired when measurement is started, even if trigger criteria are not met after a certain interval. So if averaging is applied to an asyn- chronous signal, the resulting data is meaningless.
Page 266 12.3 Setting FFT Analysis Conditions Trigger Modes and Averaging If the trigger mode is [Single] or the calculation setting is [Once] Measurements continue until the specified number of averaging points is acquired. (Spectrum averaging) (Waveform averaging) Start Measurement Trigger analysis analysis [START] criteria met...
Page 267: Emphasizing Analysis Results (Phase Spectra Only)
12.3 Setting FFT Analysis Conditions 12.3.8 Emphasizing Analysis Results (phase spectra only) By specifying a setting factor (rate) to be applied to the input signal, the display of data exceeding the result- ing threshold can be emphasized. This feature is useful for viewing waveforms that may otherwise be obscured by noise.
Page 268: Analysis Mode Settings
12.3 Setting FFT Analysis Conditions 12.3.9 Analysis Mode Settings Select the type of FFT analysis, channel(s), waveform display color and x and y axes. Procedure → To open the screen: Right-click and select [STATUS] [Status] sheet See: To set from the Waveform screen (p.261) Analysis Setting Contents Analysis No.
Page 269 12.3 Setting FFT Analysis Conditions When [Parameter] setting contents are displayed Set the parameter. Move the flashing cursor to the [Parameter] column of the Anal- ysis No. to set. Select Analyze Parameter Setting Contents Filter: Normal nables the octave filter. 1/1 Octave, 1/3 Octave See:...
Page 270 12.3 Setting FFT Analysis Conditions Octave Filter Setting Filter features are based on JIS C1513-2002 class 1, class 2 (IEC61260). Sharp Normal Only those spectral component within the Filter characteristics approximate those octave band are used for analysis. Spec- of an analog filter. tral components outside of the octave band are totally ignored.
Page 271 12.3 Setting FFT Analysis Conditions Total harmonic distortion (THD) When the analysis mode is one of the following, the cursor appears and the distortion rate is calculated. (Linear spectrum, RMS spectrum, power spectrum) The distortion rate calculates the cursor position as the fundamental wave. When 2 cursors appear, the A cursor becomes the fundamental wave.
Page 272: 10Setting The Display Range Of The Vertical Axis (Scaling)
12.3 Setting FFT Analysis Conditions 12.3.10Setting the Display Range of the Vertical Axis (Scaling) The display range of the vertical (y) axis can be set to automatically suit analysis results, and can be freely expanded and compressed. Procedure → To open the screen: Right-click and select [STATUS] [Status] sheet...
Page 273: 11Setting And Changing Analysis Conditions On The Waveform Screen
12.3 Setting FFT Analysis Conditions 12.3.11Setting and Changing Analysis Conditions on the Waveform Screen The following settings can be made on the Waveform screen. Changes to the displayed analysis results become effective when the settings are changed. • Available settings are frequency range, number of analysis points, type of win- dow function, trigger mode and pre-triggering •...
Page 274: Selecting Channels
12.4 Selecting Channels 12.4 Selecting Channels Channel selection is the same for all functions. For the setting method, refer to "3.5 Input Channel Setting" (p.71) and "7.9 Making Detailed Set- tings for Input Modules" (p.159). Scaling The scaling setting allows values displayed on this instrument to match the actual values read directly on a sound level meter or vibration meter.
Page 275: Setting Screen Displays
12.5 Setting Screen Displays 12.5 Setting Screen Displays Set the display method for FFT calculation results. Procedure → To open the screen: Right-click and select [STATUS] [Status] sheet Select the display format. Move the flashing cursor to the [Format] item. 11 12 Select the format of data to be displayed.
Page 276 12.5 Setting Screen Displays When “Drawing failed”: • NG: Nyquist, Running Spectrum The display format settings and analysis mode do not match. • NG: X-Axis Either change the [Format] setting and increase the number of screen divisions or change the display setting of the X-axis.
Page 277: Displaying Running Spectrums
12.5 Setting Screen Displays 12.5.1 Displaying running spectrums [Format] is set to [Running spectrum], changes in frequency over time can be observed. 11 12 Procedure → To open the screen: Right-click and select [STATUS] [Status] sheet Select the reference data. Move the flashing cursor to the [Reference], and select [New Data].
Page 278 12.5 Setting Screen Displays Procedure → To open the screen: Right-click and select [DISP] Waveform screen Reading measurement values of past waveforms by cursor After measurement is finished, read the values of each waveform by cursor. Click [WAVE] in the right-click menu. Select a waveform.
Page 279 12.5 Setting Screen Displays Changing the grid display The display format of the grid can be switched. Click [WAVE] in the right-click menu. Move the flashing cursor to the [Display]. Change the grid display Click [Change Grid] and change the grid display. Each click changes the display format.
Page 280: Saving Analysis Results
12.6 Saving Analysis Results 12.6 Saving Analysis Results The saving procedure is the same as for the Memory function. See: "Chapter 4 Saving/Loading Data & Managing Files" (p.81) The size of saved files depends on the save format and analysis method. See: "Appendix 2.1 Waveform File Sizes"...
Page 281: Analysis With The Waveform Screen
12.7 Analysis with the Waveform Screen 12.7 Analysis with the Waveform Screen 12.7.1 Analyzing after Specifying an Analysis Starting Point The FFT function can specify the calculation start position for waveforms measured by the memory function before calculation. Operation differs by calculation execution settings. See:"Trigger Modes and Averaging"...
Page 282 12.7 Analysis with the Waveform Screen Use the mouse to move the memory waveform portion in order to specify the calculation range, and then rotate the mouse wheel to move the calculation range in order to specify the calculation position. Memory Waveform The analysis segment of the memory waveform for one pass is displayed.
Page 283: Fft Analysis Modes
12.8 FFT Analysis Modes 12.8 FFT Analysis Modes 12.8.1 Analysis Modes and Display Examples For the functions of each analysis mode, see"12.8.2 Analysis Mode Functions" (p.289). Storage Displays the time axis waveform of the input signal. 11 12 When the window function setting is other than rectangular, the window function is applied to the waveform and displayed.
Page 284: Linear Spectrum
12.8 FFT Analysis Modes Linear Spectrum The linear spectrum plots the input signal frequency. It can be displayed as a Nyquist plot. Main uses: • To inspect the peak frequency contents of a waveform • To inspect signal amplitudes at each frequency See: About the Functions"12.8.2 Analysis Mode Functions"...
Page 285: Rms Spectrum
12.8 FFT Analysis Modes Nyquist display • If the cursor is displayed, the total harmonic distortion (THD), which sets the fundamental wave as the cursor position, is displayed. When two cursors appear, A cursor is the fundamental wave. When results cannot be obtained, [---%] is displayed.
Page 286 12.8 FFT Analysis Modes Normal display X axis: Log Y axis: Log-Mag Normal display X axis: Log Y axis: Lin-Real Normal display X axis: Log Lin‑Imag Y axis: Lin-Imag If the cursor is displayed, the total harmonic distortion (THD), which sets the fun- damental wave as the cursor position, is displayed.
Page 287: Power Spectrum
12.8 FFT Analysis Modes Power Spectrum Displays input signal power as the amplitude component. Main uses: • To inspect the peak frequency contents of a waveform • To inspect the power level at each frequency See: About the Functions"12.8.2 Analysis Mode Functions" (p.289) Axis Display Type Description...
Page 288: Power Spectrum Density *1
12.8 FFT Analysis Modes Power Spectrum Density Indicates the power spectrum density of the input signal with only the amplitude component included. This is the power spectrum divided by the frequency resolution. Main uses: To acquire a power spectrum with 1-Hz resolution for highly irregular waveforms such as white noise See: About the Functions"12.8.2 Analysis Mode Functions"...
Page 289: Lpc Analysis(Power Spectrum Density) *1
12.8 FFT Analysis Modes LPC (Power Spectrum Density ) When the spectrum shape is complex and hard to comprehend with either linear or power spectra, a rough spectrum structure can be obtained.Main uses: To obtain a spectral envelope using statistical methods See: About the Functions"12.8.2 Analysis Mode Functions"...
Page 290: Transfer Function
12.8 FFT Analysis Modes Transfer Function From the input and output signals, the transfer function (frequency characteristic) of a measurement system can be obtained. It can also be displayed as a Nyquist plot. Main uses: • To inspect a filter’s frequency characteristic •...
Page 291: Cross Power Spectrum
12.8 FFT Analysis Modes Cross Power Spectrum The product of the spectra of two input signals can be obtained. The common frequency components of two signals can be obtained. Using the voltage and current waveforms as input signals, active power, reactive power and apparent power can be obtained at each frequency.
Page 292: Impulse Response
12.8 FFT Analysis Modes Impulse Response The transfer characteristic of a system is obtained as a time-domain waveform. Utilizing both output and input signals of the measurement system, a unit impulse is applied to the system and the corresponding response waveform is obtained. Main uses: To inspect circuit time constants See:...
Page 293: Coherence Function
12.8 FFT Analysis Modes Coherence Function This function gives a measure of the correlation (coherence) between input and output signals. Val- ues obtained are between 0 and 1. Main uses: • To evaluate transfer functions • In a system with multiple inputs, to inspect the effect of each input on the output See: "12.8.2 Analysis Mode Functions"...
Page 294: Phase Spectrum
12.8 FFT Analysis Modes Phase Spectrum Shows the phase characteristics of the input signal. Main uses: • To inspect the phase spectrum of channel 1. Displays the phase of a cosine waveform as a reference (0º). • To inspect the phase difference between channels 1 and 2. See: About the Functions"12.8.2 Analysis Mode Functions"...
Page 295: Auto-Correlation Function
12.8 FFT Analysis Modes Auto Correlation Function Shows the correlation of two points on the input signal at time differential t. Main uses: • To detect periodicy in irregular signals (improving and detecting SNR) • To inspect periodic components in a noisy waveform. See: About the Functions"12.8.2 Analysis Mode Functions"...
Page 296: Cross-Correlation Function
12.8 FFT Analysis Modes Cross-Correlation Function Using two input signals, shows the correlation of two points on the input signal at time differential t. Output is displayed as a function of differential time t. Main uses: • To determine the phase shift of two signals per unit of time •...
Page 297: 1/1 Octave Analysis *1
12.8 FFT Analysis Modes 1/1 Octave X axis: Log Y axis: Log-Mag Filter: Sharp 1/3 Octave X axis: Log Y axis: Log-Mag Filter: Normal 11 12 1/3 Octave X axis: Log Y axis: Log-Mag Filter: Sharp Not available with external sampling enabled. Octave Analysis Octave analysis consists of frequency analysis of the signal passed through a constant-width band-pass filter.
Page 298 12.8 FFT Analysis Modes Measurable Ranges with Octave Analysis...
Page 299 12.8 FFT Analysis Modes 11 12...
Page 300 12.8 FFT Analysis Modes...
Page 301: Analysis Mode Functions
12.8 FFT Analysis Modes 12.8.2 Analysis Mode Functions Analysis Mode Internal analysis formula (linear, real, imag [imaginary], log [logarithm]) No analysis. Storage Waveform A waveform obtained by applying the window function to a time-domain waveform. Histogram Counts amplitude data. Linear Spectrum 11 12 RMS Spectrum Power Spectrum...
Page 302 12.8 FFT Analysis Modes...
Page 303: Waveform Evaluation Function (Mr8741 Only)
13.1 Waveform GO/NG Evaluation (MEM, FFT Function) Waveform Evaluation Function Chapter 13 (MR8741 Only) 13.1 Waveform GO/NG Evaluation (MEM, FFT Function) Only MR8741 supports the waveform evaluation function. • The waveform evaluation function can be used from the Memory function (single screen, X-Y single screen), FFT function (1 screen standard, 1 screen Nyquist).
Page 304 13.1 Waveform GO/NG Evaluation (MEM, FFT Function) • Trigger mode: SINGLE Measurement continues until stop mode conditions are fulfilled and then stops. • Trigger mode REPEAT, AUTO Recording and waveform evaluation is carried out continuously. Click [STOP] to terminate the measurement. •...
Page 305 13.1 Waveform GO/NG Evaluation (MEM, FFT Function) Waveform evaluation mode and stop mode Waveform evaluation mode Stop mode Stop on GO result Return NG if any part of waveform leaves evalua- Stop on NG result tion area GO & NG Stop on GO or NG result Stop on GO result Return NG if entire wave-...
Page 306: Setting The Waveform Area
13.2 Setting the Waveform Area 13.2 Setting the Waveform Area To evaluate the waveforms, a evaluation area is required. Two methods are available: one is to load the already created evaluation area and settings, and the other is to create a new evaluation area. Loading the already created evaluation area Setting method Procedure Screen: FILE...
Page 307 13.2 Setting the Waveform Area Creating a new evaluation area Setting method Procedure Screen: STATUS Click to call the Status screen. [STATUS] Function:MEMORY Move the flashing cursor to Waveform Judge. Select [Edit] from the GUI displayed on the screen. Make the new evaluation area. "13.5 Creating the Evaluation Area"...
Page 308: Setting The Waveform Evaluation Mode
13.3 Setting the Waveform Evaluation Mode 13.3 Setting the Waveform Evaluation Mode Setting method Procedure Screen: STATUS Function:MEMORY Move the flashing cursor to Waveform Judge. Select the setting from the GUI displayed on the screen. Select Disable waveform evaluation. Return NG if any part of the waveform leaves the evalua- tion area.
Page 309: Setting The Go/Ng Stop Mode
13.4 Setting the GO/NG Stop Mode 13.4 Setting the GO/NG Stop Mode When waveform evaluation is enabled (OUT or ALL OUT is selected), the "Stop mode" menu appears. Specify which evaluation option, GO or NG, should be used to stop the recording. The Auto Save function is only executed when interruption conditions are satisfied.
Page 310 13.4 Setting the GO/NG Stop Mode Relationship between stop conditions and the trigger mode • There are three trigger modes: Single, Repeat, and Auto. "8.2 Setting the Trigger Mode" (p.187) See: • There are three stop conditions: PASS, FAIL, and PASS & FAIL. •...
Page 311: Creating The Evaluation Area
13.5 Creating the Evaluation Area 13.5 Creating the Evaluation Area Setting method Procedure Screen: Waveform display Move the flashing cursor to the [Waveform item and select from the GUI dis- Judge] [Edit] played on the screen. Select an editor from the GUI displayed on the screen, and create the area that will be the ref- erence for waveform judgment.
Page 312: Editor Command Details
13.6 Editor Command Details 13.6 Editor Command Details Load Wave The waveform shown on the Waveform screen is loaded into the editor and displayed. Instructions Select [Load Wave] Select the type of waveform capture to perform. The waveform displayed on the Waveform screen will be loaded into the editor.
Page 313 13.6 Editor Command Details Fill color Fills in an enclosed area. Instructions Select [Fill color] Use the mouse to move the paintbrush mark ＋ to the area to be filled in. If the area is not completely enclosed, adjacent areas will also be filled in. Execute The area completely enclosed by lines is filled in.
Page 314 13.6 Editor Command Details Eraser Serves to erase unwanted sections. Move the mark with the mouse to erase parts of the image. Instructions Select [Eraser] Use the mouse to move the eraser mark to the start point of the section to be erased.
Page 315 13.6 Editor Command Details Invert colors Reverses the colors of a filled-in area and the surrounding area. Select to display filled-in area in reverse. [Invert colors] Cancel Serves to undo the immediately preceding command. It can be used with commands other than [Save and End] and [Discard and End]. Select to cancel the editor screen.
Page 316 13.6 Editor Command Details...
Page 317: System Environment Settings
System Environment Chapter 14 Settings Use the System screen [Environment] sheet to make system-related settings. Opening the [Environment] sheet MR8740 13 14 Select [SYSTEM] then [Environment] from the right-click menu. MR8741 See: "Chapter 16 External Control (MR8741 Only)" (p.333)
Page 318 Setting Descriptions____________________________________________ Grid Select the grid (graticule) type for the waveform screen. No grid displayed. Dotted Line Display a dotted-line grid. (default setting) Solid Line Display a solid-line grid. Time Value Display the time from the trigger point on the display. Time Display the time from the trigger point (fixed units).
Page 319 Language Selects the display language. English (default setting)/ Japanese / Korean/ Chinese Auto Scale Variable values are automatically changed according to changes in scaling and voltage range. See: "7.5 Variable Function (Setting the Waveform Display Freely)" (p.153) Off / On (default setting) Start Action To prevent operating mistakes from unintentionally starting measurement, the [START]...
Page 320 Additional Description __________________________________________ Selecting a Select [Color Edit] to display the [Custom Color] screen. Screen Color Change the (red), (green) and (blue) values of each item to change its color. See: "7.1.3 Alphanumeric Input" (p.139) [Custom Color] screen Color setting for each waveform Grid (graticule) color Colors of cursor A and B lines Color of numerical values...
Page 321: Connection To A Computer
Model 9333 LAN For more information about commands, refer to Communicator (p.332) the communications operation manual on the sup- plied application disk. The settings of both block I and block II need to be made for MR8740.
Page 322: Lan Settings And Connection (Before Using Ftp/Internet Browser/Command Communications)
15.1 LAN Settings and Connection (Before Using FTP/Internet Browser/Command Communications) 15.1 LAN Settings and Connection (Before Using FTP/ Internet Browser/Command Communications) The required settings are different, depending on whether the instrument is to be connected to an existing network or directly to a PC. When connecting the instrument to your LAN using a LAN cable of more than 30 m or with a cable laid outdoors, take appropriate countermeasures that include installing a surge protector for LAN.
Page 323 15.1 LAN Settings and Connection (Before Using FTP/Internet Browser/Command Communications) Setting Items Interface Host Name This is a name that identifies the instrument on the network. Assign a host name that is different from the names of all other devices. This instrument does not support dy- namic DNS, the name that you set is not registered with a DNS server.
Page 324 15.1 LAN Settings and Connection (Before Using FTP/Internet Browser/Command Communications) MR8740/MR8741 is There are two methods to install the instrument (MR8740/MR8741) to a network not equipped with a using a DHCP server to assign IP addresses. DHCP function. Ask your network system administrator to provide an available IP address, which is out of the range of the IP addresses the DHCP server leases, and assign it as the static IP address to the instrument.
Page 325 15.1 LAN Settings and Connection (Before Using FTP/Internet Browser/Command Communications) LAN Setup Workflow Click [SYSTEM] in the right-click menu to display the Communications sheet. According to the intended use, make settings as outlined below. Use the mouse to move the flashing cursor and select a setting item.
Page 326: Connecting Instrument And Pc With Lan Cable
Connect the instrument to a PC with a LAN cable as follows. Plug the LAN cable (100BASE-TX compliant) into the 100BASE-TX connector on the rear of the instrument in the case of the MR8740 and on the front of the instrument in the case of the MR8741.
Page 327 15.1 LAN Settings and Connection (Before Using FTP/Internet Browser/Command Communications) 2. Making 1:1 Connections Between the Instrument and a PC (Connecting the Instrument to a PC) You can monitor and control the instrument from a PC by connecting the instru- ment to the PC with LAN cable (100BASE-TX cable) Connection cable: Use one of the following.
Page 328: Performing Remote Operations On The Instrument (Use An Internet Browser)
15.2 Performing Remote Operations on the Instrument (Use an Internet Browser) 15.2 Performing Remote Operations on the Instrument (Use an Internet Browser) You can perform remote operations on the instrument from a PC by using an Internet browser. Attempting to control the instrument simultaneously from multiple computers may result in unintended operation.
Page 329: Connecting To The Instrument With An Internet Browser
15.2 Performing Remote Operations on the Instrument (Use an Internet Browser) 15.2.2 Connecting to the Instrument With an Internet Browser The following example shows how to use the IE (Internet Explorer) browser on Windows 7. Launch IE on the PC and enter "http://" plus the IP address of the instrument in the address bar. If the IP address of the instrument is "192.168.0.2"...
Page 330: Operating The Instrument With An Internet Browser
15.2 Performing Remote Operations on the Instrument (Use an Internet Browser) 15.2.3 Operating the Instrument With an Internet Browser Start/Stop Measurement, acquire measurement data You can start and stop a measurement. Start/stop measurement, acquire measurement data screen To open the screen: Click [Start/Stop] on list of operations.
Page 331 Normal / Slow / Very Slow Basic Operations When you click a button on the operation panel, MR8740/MR8741 Memory HiCorder performs the same action is if the corresponding key on the unit was pressed. However, simultaneously activating more than one button is not possible.
Page 332 15.2 Performing Remote Operations on the Instrument (Use an Internet Browser) Acquiring Instrument Memory Data from a Computer Use any of the following operating procedures to acquire the data. • Use the FTP function • Use communication commands For details on each of the commands, refer to the Instrument Communication Command Instruction Manual on the application CD.
Page 333 15.2 Performing Remote Operations on the Instrument (Use an Internet Browser) Acquiring data by communication commands ______________________ Transferring storage data (measurement values) Use :MEMory:VDTA? A. Procedure :MEMory:MAXPoint? The number of data samples stored in the memory of the instrument is acquired. Check that storage data exists.
Page 334 15.2 Performing Remote Operations on the Instrument (Use an Internet Browser) Entering a Comment You can specify strings to be used as title comment, logic channel comment, and analog channel comment. Information about the module type and channel (installation location in the instrument) can be obtained and used only for the respective channel.
Page 335: Accessing The Files On The Instrument From A Computer (Using Ftp)
15.3 Accessing the Files on the Instrument From a Computer (Using FTP) 15.3 Accessing the Files on the Instrument From a Computer (Using FTP) By using a PC FTP client, you can transfer files from the instrument's media to the PC and perform other file operations.
Page 336: Making Ftp Settings At The Instrument
15.3 Accessing the Files on the Instrument From a Computer (Using FTP) 15.3.1 Making FTP Settings at the Instrument Procedure → To open the screen: Right-click and select [SYSTEM] [Interface] sheet Set the access restrictions. Move the flashing cursor to the [Access Ctrl] item.
Page 337: Using Ftp To Connect To The Instrument
You can also enter the user name and password, delimited by ':' and '@', in front of the normal IP address. [ftp:// Username:Password@ instrument IP address] Example: When the user name is "hioki" and the password is "1234": Enter [ftp://hioki:1234@192.168.0.2]. If the connection fails Check the communications settings of the instrument.
Page 338: Using Ftp For File Operations
15.3 Accessing the Files on the Instrument From a Computer (Using FTP) 15.3.3 Using FTP for File Operations Downloading Files Select the file to download from the folder list and drag and drop* it on the down- load destination (the desktop or a folder outside the IE window). *: Click the file and hold the button down.
Page 339: Wave Viewer (Wv)
From the Windows Start button, open the [control panel] and click on [Add or remove programs]. Select [HIOKI Wave Viewer (Wv)] and uninstall the application. To upgrade to a newer version, uninstall the old version first and then install the new version.
Page 340: Controlling The Instrument With Command Communications (Lan)
15.5 Controlling the Instrument with Command Communications (LAN) 15.5 Controlling the Instrument with Command Communications (LAN) You can control the instrument remotely over the communications interface (LAN). • For details, see the communications related documentation on the supplied application disc. •...
Page 341: Making Settings On The Instrument
15.5 Controlling the Instrument with Command Communications (LAN) 15.5.1 Making Settings on the Instrument Set items related to command communications. Procedure → To open the screen: Right-click and select [SYSTEM] [Interface] sheet Select Set the delimiter. Send character code 0x0a. Move the flashing cursor to the [Delimiter] item.
Page 342: Communication Command Setting
15.5 Controlling the Instrument with Command Communications (LAN) 15.5.2 Communication Command Setting The following example shows how to make a connection using the telnet software (HyperTerminal) supplied with Windows XP. Launch HyperTeminal. Click [Start], [Programs] [Accessories] [Com- munications] - [HyperTerminal], and then click [HyperTerminal].
Page 343 15.5 Controlling the Instrument with Command Communications (LAN) Make detailed connection settings. 1. Select [Properties] in the [File] menu. The Properties dialog for the specified connection name ap- pears. 2. Click the [Settings] tab. 3. Click the [ASCII Setup...] button. [ASCII Setup] dialog appears.
Page 344: Operating The Instrument Remotely And Acquiring Data
15.6 Operating the instrument remotely and acquiring data by using Model 9333 LAN Communicator 15.6 Operating the instrument remotely and acquiring data by using Model 9333 LAN Communicator Model 9333 LAN Communicator, which is the optional communication program for PCs, enables the PC to control the instrument remotely and to store data directly.
Page 345: External Control (Mr8741 Only)
External Control Chapter 16 (MR8741 Only) This chapter describes how to operate MR8741 using the external control terminals. We use the term external control terminals generically to refer to all of the terminals. Opening the [Environment] sheet Select [SYSTEM] then [Environment] from the right-click menu.
Page 346: Connecting External Control Terminals (Mr8741 Only)
16.1 Connecting External Control Terminals (MR8741 Only) 16.1 Connecting External Control Terminals (MR8741 Only) The method for connecting to the external control terminals is as follows. Connecting External I/O Terminals (Connector Blocks) Cables to connect Recommended cables: single strand diameter: φ 0.65 mm (AWG22) 10 mm Single strand multi-strand: 0.32 mm...
Page 347: External I/O (Mr8741 Only)
16.2 External I/O (MR8741 Only) 16.2 External I/O (MR8741 Only) 16.2.1 External Input (START/IN1) (STOP/IN2) (SAVE/IN3) External control signals can be applied to start and stop measurement, and to save data. The fac- tory-default settings are to [START], [STOP], and [SAVE]. Signal Input Procedure Connect the cables for the corresponding external input signals to START/ IN1, STOP/IN2, SAVE/IN3, and GND terminals.
Page 348: External Output (Go/Out1) (Ng/Out2)
16.2 External I/O (MR8741 Only) 16.2.2 External Output (GO/OUT1) (NG/OUT2) Signals can be output that indicate the MR8741 judgment state. Signal Output Procedure Connect the GO/OUT1, NG/OUT2, and GND terminals to the device(s) to be controlled by single wires. See: "16.1 Connecting External Control Terminals (MR8741 Only)"...
Page 349 16.2 External I/O (MR8741 Only) The signal for the specified state is output. Output signal Open drain output (with voltage output) active LOW Output voltage HIGH level: 4.0 to 5.0 V, LOW level: 0 to 0.5 V (current value:15 mA) range Maximum input 50 VDC, 50 mA, 200 mW...
Page 350: External Sampling (Smpl)
16.2 External I/O (MR8741 Only) 16.2.3 External Sampling (SMPL) This applies to only the Memory function of MR8741. The sampling speed can be controlled by applying an external signal. Signal Input Procedure Connect the cables for the corresponding output signals to SMPL and GND terminals. On the SYSTEM screen, open the...
Page 351: Trigger Output (Trig Out)
16.2 External I/O (MR8741 Only) 16.2.4 Trigger Output (TRIG OUT) You can output a signal when a trigger event occurs. In addition, multiple MR8741s can be used for parallel synchronous operation. Signal Output Procedure Connect the cables for the output signals to TRIGOUT and GND terminals. See: "16.1 Connecting External Control Terminals (MR8741 Only)"...
Page 352: External Trigger Terminal (Ext.trig)
16.2 External I/O (MR8741 Only) 16.2.5 External Trigger terminal (EXT.TRIG) You can input external signals as trigger sources. In addition, multiple MR8741s can be used for parallel synchronous operation. Signal Input Procedure Connect the cables for the corresponding external input signals to the EXT.TRIG and GND terminals.
Page 353: Specifications
16 17 Isolation resistance and Between chassis and power line :1.69 kV AC for 1 min at least 50 MΩ at 500 V DC (MR8740) 1.69 kV AC for 1 min at least 20 MΩ at 500 V DC (MR8741) withstand voltage Between input module and chassis: 3 kV AC for 1 min at least 100 MΩ...
Page 354 *1:When an LCD monitor is connected or when displaying the Waveform screen via a computer using the HTTP function Accessories/Options Accessories Instruction Manual ....................1 Application CD ....................1 Power Cord ......................1 Rack mounting brackets (for EIA standard) ......1 set (MR8740 only) Options For information about options: (p. A10)
Page 355: Measurement Functions
17.2 Measurement Functions 17.2 Measurement Functions 17.2.1 Memory Function 5, 10, 20, 50, 100, 200, 500 μs/div Timebase 1, 2, 5, 10, 20, 50, 100, 200, 500 ms/div 1, 2, 5, 10, 30, 50, 100 s/div 1, 2, 5 min/div Time axis resolution 100 points/div Sampling period...
Page 356: Trigger Section
Trigger modes • Single, Repeat, Automatic (Memory function, FFT function) • Single, Repeat (Recorder function) Trigger source MR8740: Block I Analog Unit (Ch1 to Ch32), 8 Standard Logic Channels Block II Analog Unit (Ch1 to Ch22), 8 Standard Logic Channels...
Page 357: File Specifications
Supported storage media USB memory stick, Internal RAM, LAN (Model 9333 LAN Communicator) Saved data MR8740: Setting data, measurement data, screen image, print image MR8741: Setting data, measurement data, screen image, print image, waveform evaluation conditions, waveform evaluation areas Saving types •...
Page 358: Built-In Functions
17.5 Built-In Functions 17.5 Built-In Functions Calculation-related functions Calculation functions Memory Function supported Number of calculations Up to 16 calculations can be applied to any channel Calculation range Whole range, between A/B cursors or after trigger Calculation types Average, RMS value, P-P value, maximum value, time to maximum value, minimum value, time to minimum value, period, frequency, rise time, fall time, standard deviation, squared value, X-Y squared value, time to level, level at time, pulse width, duty ratio, pulse count, four basic arithmetic operations, time difference, phase difference, High level, Low level...
Page 359 17.5 Built-In Functions Monitor functions Monitor display* Level monitor: Display the level and numerical value by selecting the level monitor with the DISP DMM display: Display the numerical values by pressing the DISP Numerical value display* Instantaneous value display, with hold function Level monitor sampling 10 kS/s (fixed) Refresh rate...
Page 360 17.5 Built-In Functions Others On-line help function* Clicking [HELP] displays help for the item at the currently selected (blinking) item (the whole screen is not used) Basic help (when making settings, displays a brief description of the selected (blinking) item along the bottom of the screen) Grid types* Display only: Off, normal or normal (dark)
Page 361: Input Modules Specifications
17.6 Input Modules Specifications 17.6 Input Modules Specifications 17.6.1 8966 Analog Unit Temperature and humidity 23 ± 5°C (73.4 ± 9.0°F), 20 to 80% RH (when zero adjustment is executed 30 minutes after power range for guaranteed accuracy 3 year Product warranty period Period of guaranteed accuracy 1 year...
Page 362: 8967 Temp Unit
17.6 Input Modules Specifications 17.6.2 8967 TEMP Unit Temperature and humidity 23 ± 5°C (73.4 ± 9.0°F), 20 to 80% RH (when zero adjustment is executed 30 minutes after power on) range for guaranteed accuracy Product warranty period 3 year Period of guaranteed accuracy 1 year No.
Page 363: 8968 High Resolution Unit
17.6 Input Modules Specifications 17.6.3 8968 High Resolution Unit Temperature and humidity 23 ± 5°C (73.4 ± 9.0°F), 20 to 80% RH (when zero adjustment is executed 30 minutes after power range for guaranteed accuracy 3 year Product warranty period Period of guaranteed accuracy 1 year No.
Page 364: 8969 Strain Unit / U8969 Strain Unit
Guaranteed accuracy period:1 year Guaranteed accuracy period:1 year Guaranteed accuracy period from adjust- guaranteed accuracy ment made by Hioki:1 year Temperature and humidity for guaranteed Temperature and humidity for guaranteed accuracy:23°C°F ± 5°C (73.4 ± 9.0°F), accuracy:23°C ± 5°C (73.4°F ± 9.0°F),...
Page 365: 8970 Freq Unit
17.6 Input Modules Specifications 17.6.5 8970 Freq Unit Temperature and humidity 23°C ± 5°C (73.4 ± 9.0°F), 20% RH to 80% RH range for guaranteed accuracy Measurement functions Based on voltage input, measures frequency, rotation speed, power frequency, integral values, pulse duty ratio, and pulse width.
Page 366 17.6 Input Modules Specifications Storage temperature and hu- Same as the Memory HiCorder in which the 8970 is installed midity ranges Operating environment Same as the Memory HiCorder in which the 8970 is installed Applicable standards Safety EN 61010, EMC EN 61326 Class A Dimensions Approx.
Page 367: 8971 Current Unit
Model 9272-10, 9277, 9278, 9279, 9709, CT6841, CT6843, CT6844, CT6845, CT6846, CT6862, CT6863, CT6865 Hioki current sensors with RM515EPA-10PC (Hirose) installed (Supported conversion ratios: 2 V/20 A, 2 V/50 A, 2 V/200 A, 2 V/500 A, 2 V/1000 A* (To connect with Model 8971, using Model 9318 Conversion Cable)
Page 368: 8972 Dc/Rms Unit
17.6 Input Modules Specifications 17.6.7 8972 DC/RMS Unit Temperature and humidity 23 ± 5°C (73.4 ± 9.0°F), 20 to 80% RH (when zero adjustment is executed 30 minutes after power range for guaranteed accuracy 3 year Product warranty period Period of guaranteed accuracy 1 year No.
Page 369: 8973 Logic Unit
17.6 Input Modules Specifications 17.6.8 8973 Logic Unit 3 year Product warranty period No. of input channels 4 Probes (16channels) Input terminals Mini DIN Applicable probes 9320-01 Logic Probe, MR9321-01 Logic Probe, 9327 Logic Probe Operating temperature and Same as the host Memory HiCorder humidity Operating environment Same as the host Memory HiCorder...
Page 370: Mr8990 Digital Voltmeter Unit
17.6 Input Modules Specifications 17.6.9 MR8990 Digital Voltmeter Unit Temperature and humidity 23 ± 5°C (73.4 ± 9.0°F), 20 to 80% RH (when calibration is executed 30 minutes after power on) range for guaranteed accuracy Product warranty period 3 year Period of guaranteed accuracy 1 year No.
Page 371: U8974 High Voltage Unit
17.6 Input Modules Specifications 17.6.10 U8974 High Voltage Unit Accuracy figures assume installation in a Memory HiCorder and operation after a 30-minute warm-up period at 23°C±5°C (73°F±9°F) and 80% RH (no condensation). 3 year Product warranty period Guaranteed accuracy period 1 year Number of input channels 2 channels...
Page 372: U8793 Arbitrary Waveform Generator Unit
Conditions of guaranteed Guaranteed accuracy period: 1 year accuracy Guaranteed accuracy period from adjustment made by Hioki: 1 year Temperature and humidity for guaranteed accuracy: 23°C±5°C (73°F±9°F), 80% RH or less Warm-up time: at least 30 min. Power supply frequency range for Memory HiCorder in which Model U8793 is installed: 50 Hz/60 Hz ±...
Page 373 ±1.0% of period (higher than 20 kHz but not higher than 100 kHz) Arbitrary waveform generation function specifications Output waveform Waveforms measured with the 8847, MR8847, MR8847A, MR8827, MR8740, or MR8741 Memory HiCorder (Logic waveforms are not supported.) Waveforms measured with the PW3198 Power Quality Analyzer (via SF8000)
Page 374: Mr8790 Waveform Generator Unit
17.6 Input Modules Specifications 17.6.12 MR8790 Waveform Generator Unit Accuracy figures assume installation in a Memory HiCorder and operation after a 30-minute warm-up period at 23°C±5°C (73°F±9°F) and 80% RH (no condensation). General Specifications 3 year Product warranty period Guaranteed accuracy period 1 year Guaranteed accuracy period 1 year...
Page 375: Mr8791 Pulse Generator Unit
17.6 Input Modules Specifications 17.6.13 MR8791 Pulse Generator Unit General Specifications Temperature and humidity for 23°C±5°C (73°F±9°F), 80% RH or less (no condensation) (When installed in the Memory guaranteed accuracy HiCorder) Product warranty period 3 year Guaranteed accuracy period 1 year Operating temperature and As per Memory HiCorder in which Model MR8791 is installed humidity...
Page 376 17.6 Input Modules Specifications Output Connector Specifications 10250-52A2PL: 3M products (SCSI-2 connector), (Centronics half-pitch 50 pins socket-contact) Signal name Signal name I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND I_GND...
Page 377: Maintenance And Service
The fuse is housed in the power unit of the instrument. If the power does not turn on, the fuse may be blown. If this occurs, a replacement or repair cannot be per- formed by customers. Please contact your dealer or Hioki representative.
Page 378: Trouble Shooting
18.1 Trouble Shooting 18.1 Trouble Shooting If damage is suspected, check the "Troubleshooting" section before contacting your dealer or Hioki representative. If Power and Operating Mouse Malfunction Symptom Check Item, or Cause Remedy and Reference display does Verify that the power cord is connected Is the power cord disconnected? properly.
Page 379 18.1 Trouble Shooting If the Display or Operations Malfunction Symptom Check Item, or Cause Remedy and Reference The displayed waveform Turn the Variable function off. size does change Is the Variable function enabled? "7.5 Variable Function (Setting the when the input range is Waveform Display Freely)"...
Page 380: Initializing The Instrument
18.2 Initializing the Instrument 18.2 Initializing the Instrument 18.2.1 Initializing System Settings (System Reset) Select groups of settings currently in force on the instrument, and initialize the settings. Initialization returns the instrument to the factory default state. By default, the setting of [Setting (Stat, Ch, Trig)] and [Setting (Env)] are selected for initialization in this screen.
Page 381: Error Messages
18.3 Error Messages 18.3 Error Messages A screen message appears whenever an error occurs. In either case, take the remedial action indicated. A beep may sound if the beeper setting on the [Environment] sheet is [Warn] [Warn+Action]. See: "Chapter 14 System Environment Settings" (p.305) Warning Display Appears just once when an error occurs.
Page 382 18.3 Error Messages Displayed Warnings Message Remedial Action Reference "2.6 Adjusting the Zero Po- Zero-adjustment needed. Perform zero-adjustment. sition (Zero-Adjust)" (p.57) Disabled key. Close the dialog. "7.3 Displaying New Wave- The key operation is prohibited because Over- Invalid key pressed (Overlay) forms Over Past Waveforms lay is enabled.
Page 383 18.3 Error Messages Displayed Warnings Message Remedial Action Reference Inappropriate setting of time axis for Return the time axis to the time axis setting "3.4.2 Time Axis Range and waveform data. when the waveform was measured. Sampling Rate" (p.65) Set the same time axis setting for all search "8.12 Using trigger settings Some blocks are different in time axis target blocks.
Page 384: Self-Test (Self Diagnostics)
18.4 Self-Test (Self Diagnostics) 18.4 Self-Test (Self Diagnostics) The following self-test checks are available. Procedure → To open the screen: Right-click and select [SYSTEM] [Init] sheet Check the instrument's internal memory (ROM and RAM). The results are displayed on the screen. (p.372) The instrument does not support the use of a printer.
Page 385: Display Check
18.4 Self-Test (Self Diagnostics) Procedure (Common for Display Check, System Configuration Check) → To open the screen: Right-click and select [SYSTEM] [Init] sheet 18.4.2 Display Check This check tests the condition of the display screen. Move the flashing cursor to the [Display Check] item.
Page 386: Updating The Instrument
18.5 Updating the Instrument 18.5 Updating the Instrument Each of block I and block II need to be updated for MR8740. The version update file is the same for both block I and block II. Right-click to display the list menu, and then click [FILE] to open the File screen.
Page 387 18.5 Updating the Instrument If the version update file is not displayed on the File screen The possible causes are as follows. (Example: When the version update file is saved in the "HIOKI_MR8740" folder of the USB mem- ory stick) Wrong media is selected Check the address displayed at the top of the screen.There is no problem if the address begins with "USB1".
Page 388: Cleaning
18.6 Cleaning 18.6 Cleaning Cleaning the Instrument and Input Modules To clean the instrument and input modules wipe it gently with a soft cloth moist- ened with water or mild detergent. Never use solvents such as benzene, alcohol, acetone, ether, ketones, thinners or gasoline, as they can deform and discolor the case.
Page 389: Disposing Of The Instrument (Lithium Battery Removal)
18.7 Disposing of the Instrument (Lithium Battery Removal) 18.7 Disposing of the Instrument (Lithium Battery Removal) The instrument contains a lithium battery for memory backup. Remove this battery before disposing of the instrument. • To avoid electric shock, turn off the power switch and disconnect the power cord and connection cords before removing the lithium battery.
Page 390 18.7 Disposing of the Instrument (Lithium Battery Removal) Lithium Battery Removal MR8740 Screw Phillips screwdriver Lithium Battery Lead Circuit board MR8741 Screw Lithium Battery Phillips screwdriver...
Page 391: Appendix
Channel Range Maximum sensitivity Coupling Disp Ratio Scaling Each channel Trigger Mode Memory Auto Recorder Single PreTrigger (Memory) Trigger Source Waveform Trigger settings window Timing (Recorder) Start Trigger for each module Timer Trigger Trigger synchronization (MR8740) Off External Trigger (MR8741)
Page 392: Appendix 2 Reference
Appendix 2 Reference Appendix 2 Reference Appendix 2.1 Waveform File Sizes Refer to the following table for information about the waveform file sizes. References File Type Function Sizes Calculation method MEM File Memory Function (p.A2) (p.A3) REC File Recorder Function (p.A2) (p.A3) FFT File...
Page 393 Appendix 2 Reference CSV (Text) File Size (Memory Function) File size = header size + data size Calculation method: "CSV (Text) File" (p.A4) Recording Saved Channels Data Quantity length (div) 10,001 313 KB 450 KB 723 KB 1.2 MB 2.3 MB 4.4 MB 1,000 100,001...
Page 394 Appendix 2 Reference FFT File File size (bytes) =header size + the size of the time axis data + the size of the mid-term data *1: Header size = 30720 + 512(analog channel portion +Number of waveform calculation channels+Number of FFT cal- culation channels + 1) *2: the size of the time axis data = (analog channel portion + 2 xNumber of waveform calculation channels) x data (*4) *3: the size of the mid-term data = (346 x Number of FFT points + 836) x Number of FFT calculation channels(*4)
Page 395: Appendix 2.2 Setting Configuration And Image Data File Sizes
Appendix 2 Reference Appendix 2.2 Setting Configuration and Image Data File Sizes For information on the size of setting and image data files, see the table below. File Size Setting file 33 KB BMP (No color compression) 470 KB BMP (Gray scale/No compression) 470 KB BMP (B/W/No compression) 59 KB...
Page 396: Appendix 2.3 Timebase And Maximum Recordable Time
Appendix 2 Reference Appendix 2.3 Timebase and Maximum Recordable Time The maximum available recording time depends on the selected timebase. The maximum recording time can be obtained by the following formula. Recordable time can be verified on the Status Recordable Time = Timebase x Recording Length screen - [Status] sheet.
Page 397: Appendix 2.4 Maximum Record Length And Number Of Divisions (Memory Division Function)
Appendix 2 Reference Recorder Function Timebase/div Maximum Recording Length : 80,000 div 10 ms 13 min 20 s 20 ms 26 min 40 s 50 ms 1 h 6 min 40 s 100 ms 2 h 13 min 20 s 200 ms 4 h 26 min 40 s 500 ms...
Page 398: Appendix 2.5 Time Axis Range And Sampling Rate Of Mr8990 Digital Voltmeter Unit
Appendix 2 Reference Fixed record length The number of Maximum record divisions length (div) (blocks) 50,000 20,000 20,000 10,000 5,000 2,000 1,000 1024 Appendix 2.5 Time Axis Range and Sampling Rate of MR8990 Digital Voltmeter Unit Timebase/div Sampling Rate 100 ms 2 ms 200 ms 4 ms...
Page 399: Appendix 2.6 Scaling Method When Using Strain Gauges
Appendix 2 Reference Appendix 2.6 Scaling Method When Using Strain Gauges This section describes how to determine the scaling conversion ratio when measuring with strain gauges and the Model 8969 and U8969 Strain Unit. The appropriate conversion formula for stress depends on how the strain gauges are used.
Page 400: Appendix 3 About Options
Items indicated "specify when ordering" are not user-installable. For new purchases, contact your supplier (agent) or nearest Hioki office. Input modules (Measurement amplifiers) These are installed by insertion into the compartments on the right side of the instrument. Modules can be swapped out as needed.
Page 401 Appendix 3 About Options Module (for generation) These modules can be installed along with a measurement module. Number of Maximum output Application Model Output voltage channels frequency Arbitrary waveform generation U8793 Arbitrary Waveform Generator Unit 100 kHz -10 V to 15 V Sine wave and DC generation MR8790 Waveform Generator Unit 20 kHz...
Page 402 Appendix 3 About Options Application Model Description Model 9709 AC/DC Current Sensor 500 A, DC to 100 kHz Model CT6841 AC/DC Current Probe 20 A, DC to 1 MHz Model CT6843 AC/DC Current Probe 200 A, DC to 500 kHz AC/DC Model CT6844 AC/DC Current Probe 500 A, DC to 200 kHz...
Page 403: Appendix 4 Fft Definitions
Appendix 4 FFT Definitions Appendix 4 FFT Definitions What is FFT? __________________________________________________ FFT is the abbreviation for Fast Fourier Transform, an efficient method to calcu- late the DFT (Discrete Fourier Transform) from a time-domain waveform. Also, the reverse process of transforming frequency data obtained by the FFT back into its original time-domain waveform is called the IFFT (Inverse FFT).
Page 404 Appendix 4 FFT Definitions Representing the above relationship on a complex flat surface produces the fol- lowing figure. Imaginary component φ 実数部 Real component Linear Time-Invariant Systems __________________________________ Consider a linear time-invariant (LTI) system y(n) that is a response to discrete time-domain signal (n).
Page 405 Appendix 4 FFT Definitions Number of Analysis Points_______________________________________ The FFT functions of this instrument can perform frequency analysis of time- domain waveforms consisting of 1000, 2000, 5000, or 10,000 points. However, when the following conditions are satisfied, previously analyzed data can be reanalyzed with a different number of analysis points.
Page 406 Appendix 4 FFT Definitions Aliasing ______________________________________________________ When the frequency of a signal to be measured is higher than the sampling rate, the observed frequency is lower than that of the actual signal, with certain fre- quency limitations. This phenomena occurs when sampling occurs at a lower fre- quency than that defined by the Nyquist-Shannon sampling theorem, and is called aliasing.
Page 407 Appendix 4 FFT Definitions Anti-Aliasing Filters ____________________________________________ When the maximum frequency component of the input signal is higher than one- half of the sampling frequency, aliasing distortion occurs. To eliminate aliasing distortion, a low-pass filter can be used that cuts frequencies higher than one- half of the sampling frequency.
Page 408 Appendix 4 FFT Definitions Imaging ______________________________________________________ When the instrument is set to a measurement frequency range that requires a higher sampling rate than the maximum capability of the input module, interme- diate data points are interpolated between successive data samples. In this case, the time-domain waveform exhibits a stair-step shape.
Page 409 Appendix 4 FFT Definitions Averaging_____________________________________________________ With the FFT function, averaging is performed according to the following analyti- cal expressions. Averaging in the time domain produces meaningless data if per- formed with inconsistent trigger criteria. 1. Simple Averaging (Time and Frequency Domains) Sequences of acquired data are summed and divided by the number of acquisi- tions.
Page 410 Appendix 4 FFT Definitions Window Function ______________________________________________ The Fourier transform of a continuous system is defined by the integral Calculus in expression (14) for the time range from minus infinity to plus infinity. ∞ ∫ ε − π (14) − ∞...
Page 411 Appendix 4 FFT Definitions The following figure presents an example of spectral analysis by applying a win- dow function to a time-domain waveform. Using the window function, discontinuous points on the time-domain waveform are eliminated, so the wave shape approaches a line spectrum. When a Blackman-Harris window function is applied to a time-domain waveform (⇒...
Page 412 Appendix 4 FFT Definitions Exponential window 0.1% 0.1% 99.9% 99.9% Frequency (1/W) Time-Domain Waveform Spectrum Hamming window Frequency (1/W) Time-Domain Waveform Spectrum Blackman window Frequency (1/W) Time-Domain Waveform Spectrum Blackman-Harris window Frequency (1/W) Time-Domain Waveform Spectrum...
Page 413 Appendix 4 FFT Definitions Flat top window Frequency (1/W) Time-Domain Waveform Spectrum The following example shows input sine waves of 1050 and 1150 Hz analyzed with different window functions. Because the frequencies in this example are close to one another, a rectangular window with a narrow main lobe is able to separate and display both frequencies, but a Hann window with a wide main lobe displays the two as a single spectral component.
Page 414 Appendix 4 FFT Definitions Octave Filter Characteristics _____________________________________ Octave filter characteristics are determined according to IEC61260 standards. The figures below show these standards and the filter characteristics of this instrument. 1/1 Octave Filter Characteristic Gain [dB] Gain [dB] Normal filter ノ...
Page 415 Appendix 4 FFT Definitions Linear Predictive Coding (LPC) ___________________________________ In the following figure, linear predictive coding is implemented by passing a sam- ple of the input signal through the prediction filter while altering the filter so as to minimize errors in the original signal. Input Signal Error Signal 入力信号...
Page 416 Appendix 4 FFT Definitions...
Page 417: Index
Index Index Index Numerics Access ............324 Command Communications ......328 Delimiter ........... 329 100BASE-TX .............314 Header ............. 329 2-Point ...............147 Command Port (Port number) ...... 328 8969/U8969 Strain Unit ........163 Deleting and Renaming Files ....... 326 9769 Conversion Cable ........44 Delimiter ............
Page 418 Index Index External Control ..........333 Input Levels ............130 External Sampling ..........338 Installation ............7 External sampling ..........65 Installing ............... 7 Internal memory ..........52 Internet Browser ..........316 Invert ..............157 Fall Time ............220 ............243, A13 File Entering units and symbols ......
Page 419 Index Index X-unit .............264 Rectangular Window ........250 NPLC ............169, 8 Ref Block (Reference Block) ......240 Number of analysis points ....247, 261, A15 Reference Junction Compensation ....161 Numerical Calculations ........207 Replaceable Parts ..........365 Calculation type ..........210 Resolution ..........
Page 420 Index Index Standard Deviation (Std Dev) ......220 Start Block ............239 Starting Measurement ........79 Wave Binary ..........86, 101 Wave color ............256 Storage ............. 271 Wave Display ........... 240 Wave Text ..........86, 101 Waveform Text Comment ..........

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Mr8741

Hioki MR8740 Instruction Manual

Table of Contents

Chapter 1 Overview

Chapter 5 Printing

Chapter 7 Utility Functions

Chapter 8 Trigger Settings

Chapter 12 FFT Function

Fft Analysis Modes and Averaging

Appendix

Appendix 1 Default Values for Major Settings

Appendix 2 Reference

Appendix 2.1 Waveform File Sizes

Appendix 2.2 Setting Configuration and Image Data File Sizes

Appendix 2.3 Timebase and Maximum Recordable Time

Appendix 2.4 Maximum Record Length and Number of Divisions (Memory Division Function)

Appendix 2.5 Time Axis Range and Sampling Rate of MR8990 Digital Voltmeter Unit

Appendix 2.6 Scaling Method When Using Strain Gauges

Appendix 3 about Options

Appendix 3.1 Options

Appendix 4 FFT Definitions

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