Page 1 DM7275 DM7275-01 DM7275-02 DM7275-03 DM7276-01 DM7276 DM7276-02 DM7276-03 Instruction Manual PRECISION DC VOLTMETER 1.800.561.8187 information@itm.com Dec. 2016 Edition 1 www. .com DM7275A961-00 16-12H...
Page 2 Measurement process Measurement process This section describes voltage measurement as performed in a typical application. Example use: Measuring a battery’s voltage Preparations (1) Position the instrument as desired. (p. 7 ) 150 mm or more 50 mm or more 50 mm or more Rear (2) Perform the pre-measurement inspection.
Page 3 Measurement process (7) Turn on the instrument. (p. 2 8) (8) Set the time and date. (p. 3 0) Measurement (9) Set the measurement range. (p. 3 5) (default setting: AUTO range) When using the auto-range setting, the instrument will automatically select the optimal range. To fix the range manually: Manual range (p. ...
Page 4: Table Of Contents
Contents Contents Introduction ..........1 3.5 Measurement Error Displays Verifying Package Contents ..... 2 (Displays Other Than Measured Safety Information ........5 Values) ..........46 Operating Precautions ......7 „ Measurement error detection order ....47 3.6 Changing the Number of Display Digits ..........48 Overview 3.7 Displaying Labels (Assigning Names to Measured Values) ..49 Product Overview ......
Page 5 Contents 6.5 Correcting Measured Values ..77 Data Output Settings ....113 „ Adjusting the zero-point (NULL function) ..78 „ Compensating the effects of temperature Using a USB Flash (temperature compensation function) ..80 Drive „ Correcting measured values using a linear expression (scaling function) ....82 10.1 Overview ........115 6.6 Statistical Calculations ....
Page 6 Contents „ Measurement process (starting Appx. 3 Causes of Error in measurement from an external device Voltage Measurement ..Appx.5 and loading judgment results) ....142 „ Thermal electromotive force ....Appx.5 „ Effects of input resistance ....Appx.6 Printing „ Effects of bias current ......Appx.6 „ Effects of high-voltage measurement ..Appx.7 „...
Page 7: Introduction
Introduction Introduction Thank you for purchasing the Hioki DM7275, DM7276 Precision DC Voltmeter. To obtain maximum performance from the instrument, please read this manual first, and keep it handy for future reference. Model Interface DM7275 DM7276 GP-IB RS-232C DM7275-01 DM7276-01 ...
Page 8: Verifying Package Contents
In particular, check the accessories, panel switches, buttons, keys and connectors. If damage is evident, or if it fails to operate according to the specifications, contact your authorized Hioki distributor or reseller. • Store the packaging in which the instrument was delivered, as you will need it when transporting the instrument.
Page 9 タ L4937 マグネットアダ Lead Options (Sold Separately) L4931 延長ケーブルタ L4930 接続ケーブルマグネ付ストラップ The following options are available for the instrument. Contact your authorized Hioki distributor or DM4910 熱電対 reseller when ordering. L4931renketu DM4910 熱電対 L4932(+9207-10cap) ケーブル 9243 graber Measurement cables (general voltage measurements) L4937 マグネットアダプ...
Page 10 Verifying Package Contents Communication interface 9637 RS-232C Cable 9 pins-9 pins/1.8 m/cross 9151-02 GP-IB Connector Cable L1002 USB Cable (A - B) A-B type 9642 LAN Cable For printing 9442 Printer 9443-01 AC Adapter For Japan 9443-02 AC Adapter For countries other than Japan 1196 Recording Paper 9444...
Page 11: Safety Information
Safety Information Safety Information This instrument is designed to conform to IEC 61010 Safety Standards, and has been thoroughly tested for safety prior to shipment. However, using the instrument in a way not described in this manual may negate the provided safety features. Before using the instrument, be certain to carefully read the following safety notes.
Page 12 Safety Information Symbols on the instrument Symbols for standards Indicates cautions and hazards. Indicates the Waste Electrical and When the symbol is printed on the Electronic Equipment Directive instrument, refer to a corresponding (WEEE Directive) in EU member topic in the Instruction Manual. states. Indicates that the product conforms Indicates a grounding terminal.
Page 13: Operating Precautions
WARNING If the measurement cable or the instrument is damaged, there is a risk of electric shock. Before using the instrument perform the following inspection. • Before using the instrument, make sure that the insulation on the cables are undamaged and that no bare conductors are improperly exposed. Using the instrument under such conditions could result in electric shock. Replace the cable with those specified by our company. • To prevent an electric shock, confirm that the white portion (insulation layer) inside the cable is not exposed. If a color inside the cable is exposed, do not use the cable. • Before using the instrument for the first time, verify that it operates normally to ensure that no damage occurred during storage or shipping. If you find any damage, contact your authorized Hioki distributor or reseller. Installation environment WARNING Installing the instrument in inappropriate locations may cause a malfunction of instrument or may give rise to an accident. Avoid the following locations. • Exposed to direct sunlight or high temperature • Exposed to corrosive or combustible gases • Exposed to a strong electromagnetic field or electrostatic charge • Near induction heating systems (such as high-frequency induction heating systems and IH cooking equipment) • Susceptible to vibration • Exposed to water, oil, chemicals, or solvents • Exposed to high humidity or condensation •...
Page 14 • Keep discs inside a protective case and do not expose to direct sunlight, high temperature, or high humidity. • Hioki is not liable for any issues your computer system experiences in the course of using this disc. Before connecting a power cord...
Page 15 Operating Precautions Before connecting a measurement cable DANGER Measurement cables should only be connected to the secondary side of a breaker. Any short-circuit current at the secondary side will be cut-off by the breaker. Connections should never be made to the primary side of a breaker, because unrestricted current flow could damage the instrument and facilities if a short circuit occurs. WARNING To avoid electric shock and short-circuit accidents, use only the specified measurement cables to connect the instrument input terminals (HIGH and LOW terminals) to the circuit over 70 V DC to be tested.
Page 16 Operating Precautions Before starting a measurement Voltage measurements DANGER • The maximum rated voltage between input terminals and the ground is as follows. CAT II: 300 V AC/DC No measurement category: 800 V AC/DC If their voltages are exceeded, this instrument will be damaged and personal injury will result. Therefore, do not perform measurement in this case. • Maximum input voltage of the voltage measurement terminals is 1000 V DC, VHz AC, 1500 V peak. However, voltages over 800 V can be measured only if the circuit to be measured is isolated from the ground. If their voltages are exceeded, this instrument will be damaged and personal injury will result. Therefore, do not perform measurement in this case. • To avoid electric shock, be careful to avoid shorting live lines with the measurement cables. Temperature measurements CAUTION •...
Page 17 Operating Precautions Before making a connection to the USB connector CAUTION • To avoid equipment failure, do not disconnect the USB cable while communications are in progress. • Use a common ground for both the instrument and the computer. Use of different ground circuits will result in a potential difference between the instrument's ground and the computer's ground.
Page 18 Operating Precautions Before connecting to the EXT I/O connector WARNING To avoid electric shock or damage to the equipment, always observe the following precautions when connecting to EXT I/O connector. • Always turn off the power to the instrument and to any devices to be connected before making connections. • Be careful to avoid exceeding the rating of EXT I/O connector signal. Before connecting a printer WARNING To avoid electric shock, turn off the power to all devices before plugging or unplugging any cable between the printer and the instrument. 1.800.561.8187 information@itm.com www. .com...
Page 19: Overview
Overview 1.1 Product Overview The Hioki DM7275 and DM7276 Precision DC Voltmeters can measure DC voltages from lithium- ion batteries, electric double-layer capacitors, and other components as well as DC voltages output by sensors and other devices with a high degree of accuracy.
Page 20: Part Names And Functions
Part Names and Functions 1.3 Part Names and Functions Front Display View measured values, settings, and judgment results; configure instrument settings. (Touch panel) • Display the Settings screen and Measurement screen (measured values and judgment results) (p. 1 6). • Configure settings (p. 1 7). Operation For more information: See “1.5 Operating the Instrument” (p. 1 7). keys [V/°C] key [AUTO] key...
Page 21 Part Names and Functions Rear Power inlet Connect the power cord (p. 2 5). See “Before connecting a power cord”(p. 8 ). NPN/PNP switch Switches the EXT I/O Left: Current sink (NPN) between NPN and PNP Right: Current source (PNP) modes (p. 1 26). GP-IB connector Used in GP-IB communications (p. ...
Page 22: Screen Layout
Screen Layout 1.4 Screen Layout Measurement screen Settings screen MENU Touch the measurement parameter, measurement range, measurement speed, or on the touch panel. Screen name Touch [×] to close the screen. Touch Touch Example: If you touch the measurement speed DISP. NUMERIC.
Page 23: Operating The Instrument
Operating the Instrument 1.5 Operating the Instrument The instrument is operated using the operation keys and the touch panel. Changing settings Settings are changed using the touch panel. Touch MENU. Touch a setting and change its value on the displayed Settings screen. Returning to the previous screen 1.800.561.8187 information@itm.com www.
Page 24: X84; Switching The Measured Value Display
Operating the Instrument Switching the measured value display Operation key Touch panel Each time the key is pressed, the measured values shown on the screen will switch between voltage only and voltage and temperature. • When measuring temperature, connect the temperature sensor to the instrument in advance. (p. ...
Page 25: X84; Changing The Measurement Speed
Operating the Instrument Changing the measurement speed See “3.3 Setting the Measurement Speed” (p. 3 6). Operation key Touch panel Switches the measurement speed. 1.800.561.8187 information@itm.com www. .com...
Page 26: X84; Starting Measurement
Operating the Instrument Starting measurement By default, the instrument is in the state. In this state, measurement will continue automatically. Continuous measurement (default setting: state) See “Continuous measurement”(p. 3 7). state STOP state Measurement will continue Measurement will stop, and automatically, and measurement the last measured value will be data will be saved in the instrument’s...
Page 27: How To Use This Manual
How to Use This Manual 1.6 How to Use This Manual This manual describes how to display Settings screens as included in the broken border below. The indicated keys should be touched, starting on the Measurement screen. Example: (Measurement screen) > MENU > MATH > COMP 1.800.561.8187 information@itm.com www. .com...
Page 28: Preparing For Measurement
Preparing for Measurement 2.1 Preparation Process Before starting, read “Operating Precautions” (p. 7 ) carefully. For more information about rack mounting, see “Appx. 7 Rack Mounting” (p. A ppx.14). (1) Position the instrument as desired. (p. 7 ). (2) Perform the pre-measurement inspection. (p. 2 4). (3) Connect the power cord.
Page 29: Performing The Pre-Measurement Inspection
Before using the instrument, inspect the instrument to ensure that nothing has broken during storage or shipment and to verify proper operation. If you find any damage, contact your authorized Hioki distributor or reseller. Inspecting peripheral equipment Is there any damage to the power cord’s insulation, or is...
Page 30: Connecting The Power Cord
Connecting the Power Cord 2.3 Connecting the Power Cord Before using the instrument, read “Before connecting a power cord” (p. 8 ) carefully. Connect the power cord to the instrument and a power outlet. You will need: The power cord (instrument accessory) Power cord Rear To outlet...
Page 31: Connecting The Measurement Cables (To The Instrument)
Before connecting the measurement cables, read “Before connecting a measurement cable” (p. 9 ) carefully. Connect the optional Hioki measurement cables to the instrument’s measurement terminals. Use only Hioki measurement cables. See “Options (Sold Separately)” (p. 3 ) and “3.1 Connecting the Measurement Cables (Measurement Target)” (p. 3 1). Each test lead plugs is covered by a protective cap.
Page 32: Connecting The Temperature Sensor
Connecting the Temperature Sensor 2.5 Connecting the Temperature Sensor Before connecting the temperature sensor, read “Before connecting a temperature sensor” (p. 9 ) carefully. If you wish to measure temperature or use the temperature compensation function, connect the temperature sensor to the instrument’s TEMP.SENSOR connector. You will need: Z2001 Temperature Sensor (optional) (1) Connect the temperature sensor.
Page 33: Turning The Instrument On And Off
Turning the Instrument On and Off 2.6 Turning the Instrument On and Off Before turning the instrument on, read “Before turning the power ON” (p. 9 ) carefully. Turn on the main power switch on the rear of the instrument. Once this switch has been turned on, the instrument can be turned on and off using the POWER button on the front panel.
Page 34 Turning the Instrument On and Off Canceling the SLEEP state Press the POWER button while the The POWER button will turn green. instrument is in the SLEEP state. Lighting-up in red To make measurements at the accuracy described in the instrument’s specifications, allow the instrument to warm up for at least 60 minutes after turning on the main power switch or canceling the SLEEP state.
Page 35: Setting The Time And Date
Setting the Time and Date 2.7 Setting the Time and Date Before making measurements, set the instrument’s time and date. MENU SYSTEM (Measurement screen) > Example: Setting the month (Default setting: 12:00 am on January 1, 2015) 1.800.561.8187 information@itm.com www. .com...
Page 36: Measurement
Before connecting the measurement cables to the measurement target, read “Before connecting a measurement cable” (p. 9 ) and “Before starting a measurement” (p. 1 0) carefully. Use Hioki’s optional test leads, contact pins, alligator clips, or other connectors as appropriate depending on the measurement target.
Page 37 Connecting the Measurement Cables (Measurement Target) (2) Example connections L9207-10 Test Lead Connect, taking care to align the measurement cable colors with the measurement target’s polarity. Black L9207-10 Test Lead + L4933 Contact Pin Set L4933 pin diameter: φ1.0 mm L9207-10 Test Lead + L9434 Small Alligator Clip Set Connect, taking care to align the − measurement cable colors with the measurement target’s polarity. Black L4934 maximum clip width: 2.0 mm 1.800.561.8187 information@itm.com www.
Page 38 Connecting the Measurement Cables (Measurement Target) Using the L4930 Connection Cable Set Remove the protective caps before use. Protective cap Example connections L4930 Connection Cable Set + L4931 Extension Cable Set L4931 connector Connect using the L4931’s rod-shaped L4930 L4931 connector. L4930 Connection Cable Set + L4935 Alligator Clip Set Connect, taking care to align the measurement cable colors with the measurement target’s polarity. Clip at the middle of the clip. − Black L4930 Connection Cable Set + 9243 Grabber Clip Grip the 9243 as shown to the left.
Page 39 Connecting the Measurement Cables (Measurement Target) L4930 Connection Cable Set + L4936 Bus Bar Clip Set Grip the L4936 as shown to the left. Open the clip by depressing as you would the plunger of a syringe. Black Connect, taking care to align the measurement cable colors with the − measurement target’s polarity. The clip will close when you release your fingers. To apply the clip to a thick target: Rotate the clip’s lower jaw. Lower the lower jaw. Rotate the clip’s lower jaw in the opposite direction. In this configuration, the clip can be applied to a measurement target of 30 mm or less. 1.800.561.8187 information@itm.com www.
Page 40: Setting The Measurement Range
Setting the Measurement Range 3.2 Setting the Measurement Range By default, the range is set to AUTO (auto-range operation). In this setting, the range is automatically switched to an appropriate setting. You can also fix the range as desired (manual range operation).
Page 41: Setting The Measurement Speed
Setting the Measurement Speed 3.3 Setting the Measurement Speed The slower the measurement speed, the higher the measurement accuracy. In addition to setting the measurement speed to FAST, MEDIUM, or SLOW, you can set the integration time as desired. For more information: “Setting the integration time” (p. 6 7) The FAST, MEDIUM, and SLOW settings differ in terms of integration time as follows:...
Page 42: Starting Measurement
Starting Measurement 3.4 Starting Measurement The instrument supports two types of measurement: continuous measurement and trigger measurement. By default, the instrument is configured to perform continuous measurement (in the state). Continuous measurement Once the measurement cables have been connected to the measurement target, the instrument will display measured values.
Page 43: X84; Trigger Measurement (Measurement With User-Specified Timing)
Starting Measurement Trigger measurement (measurement with user-specified timing) Definition of trigger Operation to start measurement is termed “inputting a trigger.” Measurement can be started by means of the following operations: Instrument state Trigger input method Screen STOP Pressing the [TRIG] The instrument will not accept the *TRG EXT I/O TRIG signal or the command.
Page 44 Starting Measurement Trigger function settings Trigger source You can set whether to enable trigger input from an external device. Setting the trigger source to EXTERNAL enables use of the EXT I/O TRIG terminal as well as the *TRG command. The default setting is INTERNAL (RUN state).
Page 45 Starting Measurement Setting the measurement count ˄ Increases the setting by 1. ˅ Decreases the setting by 1. (Default setting: 1, valid setting range: 1 to 5000 measurements) • One contact check and delay will be inserted after trigger input. Measurement will then continue without any delay until the next trigger input.
Page 46 Starting Measurement Trigger measurement operation (in the STOP state or when the trigger source is set to EXTERNAL; with contact check set to ON) When the contact check function is set to OFF, no contact check will be performed after trigger input. Example 1: Measurement count of 1 TRIG Contact Wait for trigger Delay Measurement Trigger standby...
Page 47: X84; Storage Of Measurement Data In The Instrument's Internal Memory
Starting Measurement Storage of measurement data in the instrument’s internal memory Measured values are always stored in the instrument’s internal memory, which is structured as a ring buffer. Once all 5000 spaces in the internal memory are occupied by measured values, the oldest measured value will be deleted and replaced with the most recent measured value starting with the next measurement.
Page 48: X84; Displaying Trends, Bar Graphs, Statistics, And Judgment Results
Starting Measurement Displaying trends, bar graphs, statistics, and judgment results In addition to measured values, it is possible to display trends (voltage trends), bar graphs, statistics, and judgment results (for comparator measurement and BIN measurement) (on the sub- display). NUMERIC Measured values only (When measured value judgment is enabled, measured values and judgment results will be displayed.
Page 49 Starting Measurement When comparator measurement or BIN measurement is set to ON When comparator measurement (p. 5 3) or BIN measurement (p. 5 7) is set to ON, the judgment results and sub-display are displayed automatically. You can display the Settings screen by touching on the sub-display.
Page 50: X84; Checking The Voltage Trend
Starting Measurement Checking the voltage trend The trend display (p. 4 3) allows you to check up to 5000 data values stored in the instrument’s internal memory as a graph. Enlarging the waveform, adjusting the display position, and changing the time axis Touch the magnifying glass icon to change the display. Clear the measured data.
Page 51: Measurement Error Displays
Measurement Error Displays (Displays Other Than Measured Values) 3.5 Measurement Error Displays (Displays Other Than Measured Values) The instrument will display a message on the screen if it is unable to complete measurement normally. For more information: “14.3 Error Displays” (p. 1 76), “14.1 Q&A (Frequently Asked Questions)”...
Page 52: X84; Measurement Error Detection Order
Measurement Error Displays (Displays Other Than Measured Values) Measurement error detection order Measurement errors are detected in the order shown in the diagram below. The first error that is detected will be displayed on the screen and output as a signal from the EXT I/O. Order Measurement error Screen display...
Page 53: Changing The Number Of Display Digits
Changing the Number of Display Digits 3.6 Changing the Number of Display Digits You can change the number of digits that are displayed. (Measurement screen) MENU > MEAS > DIGITS ±12,000,000 dgt. (default setting) ±1,200,0000 dgt. ±120,000 dgt. ±12,000 dgt. ±1,200 dgt. •...
Page 54: Displaying Labels (Assigning Names To Measured Values)
Displaying Labels (Assigning Names to Measured Values) 3.7 Displaying Labels (Assigning Names to Measured Values) You can assign user-specified strings to measured values by enabling the label display. This function provides a convenient way to indicate what each instrument is measuring when using multiple instruments.
Page 55: Judging Measured Values
Judging Measured Values This chapter describes how to set judgment standards and perform comparator measurement (p. 5 3) or BIN measurement (p. 5 7). This functionality automatically compares measured values to the reference values and generates judgment results, making it convenient for tasks such as sorting (classifying) measurement targets or conducting shipping inspections.
Page 56: To Obtain Accurate Judgments Even When The Polarity Of The Measurement Target (Battery, Etc.) Is Reversed
To Obtain Accurate Judgments Even When the Polarity of the Measurement Target (Battery, etc.) Is Reversed 4.1 To Obtain Accurate Judgments Even When the Polarity of the Measurement Target (Battery, etc.) Is Reversed By setting the absolute value judgment function to ON, voltage can be judged as a positive value even when it is negative.
Page 57: Comparator Measurement (Using A Single Judgment Standard)
Comparator Measurement (Using a Single Judgment Standard) 4.2 Comparator Measurement (Using a Single Judgment Standard) In comparator measurement, a pair of judgment standards (in the form of upper limit and lower limit values) is set. The instrument automatically compares measured values with the reference values and generates judgment results correspondingly.
Page 58 Comparator Measurement (Using a Single Judgment Standard) Judgment result Set upper limit and Statistics display lower limit values (p. 8 4) The judgment result and statistics sub- display are shown on the Measurement screen. P1, P2 Toggles the statistics display. Deletes the statistical calculation results.
Page 59: X84; To Check Judgments Aurally
Comparator Measurement (Using a Single Judgment Standard) To check judgments aurally (Measurement screen) MENU > MATH > COMP BUZZER HI Tone for HI judgments BUZZER IN Tone for IN judgments BUZZER LO Tone for LO judgments Set the tone for each judgment and the number of tones to be sounded.
Page 60: X84; To Perform Judgment After Measured Values Stabilize
Comparator Measurement (Using a Single Judgment Standard) To perform judgment after measured values stabilize Since measured values may exhibit instability immediately after the instrument is connected to the measurement target when performing measurement manually, readings may temporarily exceed the judgment range. When judgment delay is enabled, the judgment will be output after the same judgment is obtained the set number of times.
Page 61: Bin Measurement (Using Multiple Judgment Standards)
BIN Measurement (Using Multiple Judgment Standards) 4.3 BIN Measurement (Using Multiple Judgment Standards) In BIN measurement, multiple sets (up to 10, BIN0 to BIN9) of judgment standards (consisting of upper limit and lower limit values) are set. After each measurement, the instrument compares the measured value to multiple judgment standards and generates judgment results accordingly.
Page 62 BIN Measurement (Using Multiple Judgment Standards) (Measurement screen) MENU > MATH > Enable the BIN function. Select a BIN number. (Default setting: OFF) When this function is set to OFF, upper limit and lower limit values are disabled even if they have been previously set.
Page 63 BIN Measurement (Using Multiple Judgment Standards) Judgment result Set BIN number Green: Judgment complete White: Judgment in progress (BIN numbers set to OFF are not displayed. The judgment result and sub-display are shown on the Measurement screen. Setting the BIN function to ON automatically sets the comparator function to OFF.
Page 64: Saving And Loading Measurement Conditions (Internal Memory)
Saving and Loading Measurement Conditions (Internal Memory) The current measurement conditions can be saved to the instrument’s internal memory (via the panel save function) and loaded from the instrument’s internal memory (via the panel load function) as follows: • By means of touch panel operation •...
Page 65: Saving Measurement Conditions (Panel Save Function)
Saving Measurement Conditions (Panel Save Function) 5.1 Saving Measurement Conditions (Panel Save Function) The panel save function saves the current measurement conditions in the instrument’s internal non- volatile memory. You can select whether to save NULL values. (Measurement screen) MENU >...
Page 66 Saving Measurement Conditions (Panel Save Function) (When saving to an unused panel number) Deletes all characters. Deletes the previous character. CNCL Cancels the setting and returns to the previous screen. < > Moves the cursor. Switches to uppercase characters. Switches to lowercase characters. Enter the desired text and touch ENT.
Page 67 Loading Measurement Conditions (Panel Load Function) 5.2 Loading Measurement Conditions (Panel Load Function) The panel load function loads panel data that was previously saved in the instrument’s internal memory. Panel data can be loaded as follows: • By means of touch panel operation • By sending communications commands from an external device (See the Communication Command Instruction Manual on the included application disk.) •...
Page 68: Changing The Panel Name
Changing the Panel Name 5.3 Changing the Panel Name (Measurement screen) MENU > PANEL Select the panel data whose name you wish to change. Enter the desired text and touch ENT. Up to 10 characters may be entered. Deletes all characters. Deletes the previous character. CNCL Cancels the setting and returns to the previous screen.
Page 69: Deleting A Panel
Deleting a Panel 5.4 Deleting a Panel MENU PANEL (Measurement screen) > Select the panel data you wish to delete. Touch to delete the selected panel data. 1.800.561.8187 information@itm.com www. .com...
Page 70: Useful Functionality
Useful Functionality 6.1 Obtaining Stable Measured Values Setting the integration time Readings for the measurement signal input to the instrument are averaged over the set time and displayed as measured values. The time over which the signal is averaged is known as the integration time and can be set as desired.
Page 71 Obtaining Stable Measured Values Select the unit. (When is selected) (When is selected) Select the integration time. Select the integration time. (100 PLC, 10 PLC, 1 PLC, 0.2 PLC, 0.02 PLC) ˄ Increases the value by 1. ˅ Decreases the value by 1. (Valid setting range: 1 ms to 9999 ms) •...
Page 72: X84; Reducing Measured Value Variability (Smoothing Function)
Obtaining Stable Measured Values Reducing measured value variability (smoothing function) This function averages multiple measured values to reduce measured value variability. It can only be enabled while the instrument is in the state (p. 3 7). To reduce variability in a state other than the state, adjust the integration time.
Page 73: Auto-Hold Function
Auto-hold Function 6.2 Auto-hold Function The auto-hold function is useful when you wish to check the measured value. The buzzer will sound once the measured value has stabilized (when the fluctuations in the measured value fall within the auto-hold range), and the display will be automatically held. The auto-hold range is specified as a percentage of the measurement range.
Page 74: Contact Check
Contact Check 6.3 Contact Check Enabling the contact check function lets you check the connection state between the HIGH and LOW terminals. If the measurement cables become disconnected from the measurement target, the instrument will detect a contact error and display NoCntct. If the instrument displays NoCntct, check the contact state at the ends of the measurement cables and check for breaks in the cables.
Page 75 Contact Check Threshold • The instrument’s contact check threshold is specified as a capacitance value. It can be changed within the range of 0.5 nF to 50 nF (default setting: 1 nF). • The following table provides approximate resistance value threshold equivalents for a number of contact check thresholds: Threshold value Resistance value...
Page 76 Contact Check (Measurement screen) MENU > MEAS > CNT.CHECK Enable the contact check function. (Default setting: OFF) Set the threshold (capacitance). Reverts the setting to its default value. CANCEL Cancels the setting and returns to the previous screen. (Default setting: 1 nF; valid setting range: 0.5 nF to 50 nF) Set the contact check integration time.
Page 77 Contact Check Contact check timing Contact checks are performed before measurement starts. Enabling the contact check function causes the measurement time to increase. For more information: “11.6 Timing Chart” (p. 1 39) Good contact Contact state Separation Contact TRIG Contact check Delay Measurement 1.800.561.8187 information@itm.com www.
Page 78 Contact Check Poor contact Contact state Contact Separation TRIG Contact check Delay Measurement 1.800.561.8187 information@itm.com www. .com...
Page 79: Switching The Input Resistance
Switching the Input Resistance 6.4 Switching the Input Resistance The voltmeter’s input resistance (internal resistance) can be switched. (Measurement screen) MENU > MEAS > INPUT Z AUTO Auto mode • 100 mV to 10 V range: Ω 10 G or greater (Hi-Z will be displayed on the screen;...
Page 80: Correcting Measured Values
Correcting Measured Values 6.5 Correcting Measured Values Measured values can be calculated using the zero-point adjustment function (NULL function), temperature function, and scaling function. compensation Calculations are performed in the following order when these functions are enabled: Measured value Zero-point adjustment (NULL) NULL value: V =V-V T : Ambient temperature...
Page 81 Correcting Measured Values Adjusting the zero-point (NULL function) Pressing the [NULL] key causes the measured value that is currently displayed to be acquired as the NULL value ( V ). Subsequently, the instrument will display the result of subtracting V from the measured value. You can also adjust the zero-point by setting a NULL value as desired.
Page 82 Correcting Measured Values Adjusting the zero-point using a user-set value (Measurement screen) MENU > MATH > NULL Enable the NULL function. (Default setting: OFF) Enter a NULL value and touch ENTER. +/− Toggles between positive and negative values. Deletes the entire value. Deletes the previous character. CANCEL Cancels the setting and returns to the previous screen.
Page 83 Correcting Measured Values Compensating the effects of temperature (temperature compensation function) This function converts the voltage measured value to the voltage at a specific temperature (the reference temperature) using a user-defined temperature coefficient and displays the result. The temperature dependency of voltage varies greatly with the measurement target. Before using this function, measure the measurement target’s temperature characteristics.
Page 84 Correcting Measured Values Set the reference temperature and touch Set the temperature coefficient and ENTER. touch ENTER. (Default setting: 20°C; valid setting range: (Default setting: 0 ppm/°C; valid setting -10.0°C to 60°C) range: -1000 V ppm/°C to 1000 ppm/°C) +/− Toggles between positive and negative values.
Page 85: X84; Correcting Measured Values Using A Linear Expression (Scaling Function)
Correcting Measured Values Correcting measured values using a linear expression (scaling function) This function corrects measured values using a linear function. Results are calculated as follows: = A × V + B (where A is the gain coefficient, B is the offset, V is the value after scaling, and V is the value after NULL calculation and temperature compensation In addition, you can convert measured values to other physical properties such as current or speed...
Page 86 Correcting Measured Values USER (When is selected) Set the desired unit and touch ENT. Up to three characters may be entered (not including SI prefixes*). Switches to Deletes the entire uppercase value. characters. Deletes the Switches to previous lowercase character. characters.
Page 87: Statistical Calculations
Statistical Calculations 6.6 Statistical Calculations The instrument continually calculates statistics for a maximum of 1,000,000 measurement data points, and the results of those calculations can be displayed on the Measurement screen. (p. 8 5) In addition, the results can be printed. (p. 1 43) Statistical calculation stops once the number of data points reaches 1,000,000.
Page 88: X84; Displaying, Clearing, And Printing Statistical Calculation Results
Statistical Calculations Displaying, clearing, and printing statistical calculation results DISP > STATISTICS PAGE1 Displays PAGE1 (displayed only when the comparator function or BIN function is set to ON). PAGE2 Displays PAGE2 (displayed only when the comparator function or BIN function is set to ON). CLEAR Clears the statistical calculation results.
Page 89 Statistical Calculations The statistical calculation results are automatically cleared at the following times: • When the user clears the statistical calculation results • When the user clears the statistical calculation results See “If you do not wish to clear the statistical calculation results every time they are printed” (p. 8 6) •...
Page 90: System Settings
System Settings 7.1 Key Lock (Disabling Instrument Operation) Operation of the instrument’s keys and touch panel can be disabled by means of the key lock function. (Measurement screen) MENU > SYSTEM (Default setting: OFF) The key lock function will be enabled, and the display will return to the Measurement screen.
Page 91: Buzzer Settings
Buzzer Settings 7.2 Buzzer Settings You can set the buzzer volume, operation tone, comparator judgment tone, and error tone. The volume setting applies to all buzzer tones. For more information about how to set the comparator judgment tone, see “To check judgments aurally”...
Page 92: Adjusting The Screen Brightness
Adjusting the Screen Brightness 7.3 Adjusting the Screen Brightness You can adjust the screen brightness to suit the brightness of the location in which the instrument is being used. (Measurement screen) MENU > SYSTEM Increases the screen brightness.  Decreases the screen brightness. ...
Page 93: Adjusting The Touch Panel Position
Adjusting the Touch Panel Position 7.5 Adjusting the Touch Panel Position You can adjust the touch panel position. (Measurement screen) MENU > SYSTEM Touch at each of the four corners and then touch ADJUST DONE. If you fail to adjust the touch panel position, touch panel input will be improperly recognized. In this case, turn off the instrument and then turn it back on while holding down the [AUTO], [▲], [▼] keys at the same time.
Page 94: Selecting Startup Load Settings And A Panel
Selecting Startup Load Settings and a Panel 7.7 Selecting Startup Load Settings and a Panel You can choose which settings to load when the instrument starts up. (Measurement screen) MENU > SYSTEM LAST Starts up with the last settings in use when the instrument was turned off (default setting). FACTORY Starts up with the factory settings.
Page 95: Setting Output Formats
Setting Output Formats 7.8 Setting Output Formats The formats used for the screen display, USB flash drive output, print output, and USB keyboard output can be changed. However, when using USB keyboard output, the output data’s delimiter must be set to TAB. (Measurement screen) MENU >...
Page 96: Resetting The Instrument (Reverting The Instrument To Its Factory Settings)
Resetting the Instrument (Reverting the Instrument to Its Factory Settings) 7.9 Resetting the Instrument (Reverting the Instrument to Its Factory Settings) There are two types of reset: Initializes the instrument to the factory settings. Panel data and interface settings will not be initialized. There are three ways to trigger this reset: •...
Page 97: X84; List Of Default Settings
Resetting the Instrument (Reverting the Instrument to Its Factory Settings) List of default settings Parameter Default setting Measured value display Range switching AUTO Ω Input resistance switching 10 M Number of display digits selection 7.5 digits Integration time 10 PLC (MEDIUM) Smoothing function Number of averaging iterations: 4 Trigger Source: INTERNAL...
Page 98 Resetting the Instrument (Reverting the Instrument to Its Factory Settings) Parameter Default setting Output format Date: YYYYMMDD Date delimiter: Slash Decimal point: Period Data delimiter: Comma Buzzer Volume: MED Operation tone: ON Auto-hold tone: ON Error tone: ON Communications monitor Log: OFF Startup settings Startup settings: LAST...
Page 99: Preparing To Use Usb, Rs-232C, Gp-Ib, And Lan Control
(p. 1 11). the included application disc. *The software can be downloaded from our website (http://www.hioki.com). Choose one interface to use. Communications control cannot be used at the same time. See “13.4 Interface Specifications” (p. 1 63) About communications time •...
Page 100: Preparing To Use An Interface (Connection And Settings)
Preparing to Use an Interface (Connection and Settings) 8.2 Preparing to Use an Interface (Connection and Settings) Using the USB interface Preparation process (1) Set the instrument’s communications conditions. (2) Install the USB driver on the computer. (p. 9 9) (When using the USB COM setting only)
Page 101 Before connecting the instrument to the computer for the first time, install the instrument’s dedicated USB driver. This step can be skipped if the driver has already been installed. The USB driver can be found on the included application disc or downloaded from our website (http://www.hioki.com). Installing the driver...
Page 102 Preparing to Use an Interface (Connection and Settings) Using the RS-232C interface Preparation process (1) Set the instrument’s communications conditions. (2) Configure the external device that will be connected to the instrument. (3) Connect the RS-232C cable. (p. 1 01) (1) Set the communications conditions. (Measurement screen) MENU > Select the transfer speed (baud rate). 9600 (Default setting: [bps])
Page 103 When connecting the instrument to a computer Use a D-sub 9-pin male to D-sub 9-pin male crossover cable. D-sub 9-pin male D-sub 9-pin male Instrument Computer (AT-compatible) Pin no. Pin no. 1.800.561.8187 information@itm.com Recommended cable: Hioki 9637 RS-232C Cable (1.8 m) www. .com...
Page 104 Preparing to Use an Interface (Connection and Settings) Using the GP-IB interface Preparation process (1) Set the instrument’s communications conditions. (2) Connect the GP-IB cable. (1) Set the communications conditions. MENU (Measurement screen) > Select the message terminator. Default setting: Set the address. ˄ Increases the address by 1.
Page 105 Preparing to Use an Interface (Connection and Settings) (2) Connect the GP-IB cable. Before connecting the GP-IB cable, read “Before connecting the communication cables (USB, LAN, RS-232C, GP-IB)” (p. 1 0) and “Before connecting to the RS-232C or GP-IB connectors” (p. 1 1) carefully.
Page 106 Preparing to Use an Interface (Connection and Settings) Using the LAN interface The instrument ships standard with an 100Base-TX Ethernet interface. You can control the instrument with a computer or other device by using a 10Base-T or 100Base-TX compatible LAN cable (up to 100 m) to connect the instrument to a network. Connecting the instrument and Connecting the instrument to a single computers to a network...
Page 107 Preparing to Use an Interface (Connection and Settings) (1) Set the communications conditions. Check the settings before configuring them. The settings for both the instrument and external devices differ depending on whether you are connecting the instrument to an existing network or creating a new network consisting of the instrument and a single computer.
Page 108 Preparing to Use an Interface (Connection and Settings) Settings IP Address This address is used to recognize individual devices that are connected to a network. Use an address that is not already in use by another device. Subnet Mask This setting is used to divide the IP address into an address that indicates the network and an address that indicates the device.
Page 109 Preparing to Use an Interface (Connection and Settings) (Measurement screen) MENU > Set the IP address, subnet mask, gateway, and communications command port. (Example screen: IP address setting) ˄ Increases the address by 1. ˅ Decreases the address by 1. Sets the address to 0. CANCEL Cancels the setting and returns to the previous screen.
Page 110 Preparing to Use an Interface (Connection and Settings) (2) Connect the LAN cable. Before connecting the LAN cable, read “Before connecting the communication cables (USB, LAN, RS-232C, GP-IB)” (p. 1 0) carefully. Connect the LAN cable to the instrument’s LAN connector. Orange LED Off: 10Base-TX On: 100Base-TX...
Page 111: Communications Settings
Communications Settings 8.3 Communications Settings Communications monitor (displaying communications commands) When using the communications monitor function, communications commands and query responses can be displayed on the screen. (Measurement screen) MENU > The communications monitor is displayed Turns on the communications monitor display. on the Measurement screen. Turns off the communications monitor display (default setting).
Page 112 You can set the string returned to the external device when the instrument’s model name is acquired with a communications command ( ). (When this parameter has not been set, the *IDN? instrument will return HIOKI, model name, serial number, software version). MENU (Measurement screen) >...
Page 113: Outputting Data
Outputting Data When the data output setting is enabled, you can automatically output data to an external device such as a programmable controller or computer by pressing the [TRIG] key or inputting a trigger from the EXT I/O connector. (With this approach, there is no need to send a communications command.) •...
Page 114: Output Methods
Output Methods 9.2 Output Methods Configure the interface and EXT I/O and Configure the instrument. connect the instrument. Set the automatic output setting (DATA OUT) to ON. COM, USB KEYBD: „ (When selecting PRINTER, this step is not See “Using the USB interface” (p. 9 8). necessary.) „ RS-232C: See “9.3 Data Output Settings” (p. 1 13) See “Using the RS-232C interface”...
Page 115: Data Output Settings
Data Output Settings 9.3 Data Output Settings (Measurement screen) MENU > Enable automatic output. (To change the information that will be output) (Default setting: OFF) When automatic output is set to ON, do not use communications commands. Doing so may cause measured value data to be sent twice.
Page 116 Data Output Settings Output data format Example: When the scaling function is OFF, the number of display digits is 7.5, and the output format is set to the decimal period (The output data format varies depending on the scaling function setting, number of display digits setting, and output format setting.) See “Correcting measured values using a linear expression (scaling function)”...
Page 117: Using A Usb Flash Drive
Using a USB Flash Drive 10.1 Overview Measurement data, screenshots, and measurement conditions stored in the instrument’s internal memory can be output to a USB flash drive. In addition, measurement conditions stored on a USB flash drive can be loaded into the instrument’s internal memory. When using a USB flash drive, the USB connector on the rear of the instrument cannot be used.
Page 118: Connecting A Usb Flash Drive
Connecting a USB Flash Drive 10.2 Connecting a USB Flash Drive Before connecting, read “Before connecting a USB flash drive” (p. 1 1) carefully. Inserting the drive Insert the USB flash drive into the instrument’s USB flash drive connector. • Do not insert a USB flash drive that does not support the Mass Storage Class.
Page 119: Setting The Interface
Setting the Interface 10.3 Setting the Interface Before outputting data to a USB flash drive, you must set the interface to USB flash drive mode. When using a USB flash drive, the USB connector on the rear of the instrument cannot be used. (Measurement screen) MENU >...
Page 120: Outputting Data (Usb Flash Drive)
Outputting Data (USB Flash Drive) 10.5 Outputting Data (USB Flash Drive) Outputting measurement data or screenshots Touch SAVE to output the measurement data* or screenshot* as of the time you touched the button to the USB flash drive. *The output format reflects the output format setting (p. 1 17). You can also take a screenshot by pressing and holding the [TRIG] key for 2 seconds.
Page 121: X84; Outputting All Measurement Data
Outputting Data (USB Flash Drive) Outputting all measurement data All measurement data stored in the instrument’s internal memory (up to 5000 data points) can be output at once to the USB flash drive. (Measurement screen) MENU > FILE (To change the filename) Enter text and touch ENT.
Page 122: Outputting And Loading Measurement Conditions (Usb Flash Drive)
Outputting and Loading Measurement Conditions (USB Flash Drive) 10.6 Outputting and Loading Measurement Conditions (USB Flash Drive) Outputting measurement conditions The current measurement conditions as well as panel data saved on the instrument can be output to a USB flash drive. This function is convenient when you wish to back up settings or copy settings to multiple instruments.
Page 123 Outputting and Loading Measurement Conditions (USB Flash Drive) Select whether to output panel data. Checked Outputs panel data (default setting). Not checked Does not output panel data. The output files have the following extensions: .SET: Measurement conditions .ALL: Measurement conditions and panel data Touch to output the selected...
Page 124 Outputting and Loading Measurement Conditions (USB Flash Drive) Loading measurement conditions This section describes how to load measurement conditions stored on a USB flash drive into the instrument. Communications settings are not loaded. (Measurement screen) MENU > FILE Select the measurement conditions. File content varies with the extension: .SET: Measurement conditions .ALL: Measurement conditions and panel data...
Page 125: Files
Files 10.7 Files You can check the data stored on a USB flash drive on a computer. (USB flash drive contents cannot be checked using the instrument.) File format Data is saved in the file format described below. The first time a USB flash drive is inserted into the instrument, the folder listed in the table below will be created automatically.
Page 126: External Control (Ext I/O)
External Control (EXT I/O) The EXT I/O connector on the rear of the instrument provides the following functionality: • Outputting signals such as the measurement complete signal (EOM signal) and judgment results signals (HI, IN, LO) from the instrument to an external device •...
Page 127: Switching Between Current Sink (Npn) And Current Source (Pnp)
Switching between Current Sink (NPN) and Current Source (PNP) 11.2 Switching between Current Sink (NPN) and Current Source (PNP) Before using, read “Before switching the current sink (NPN) / current source (PNP)” (p. 1 1) carefully. The NPN/PNP switch is used to change the type of programmable controller that can be supported. The instrument ships with the switch in the NPN position.
Page 128: Connections (Instrument And Control Device)
Connections (Instrument and Control Device) 11.3 Connections (Instrument and Control Device) Before connecting, read “Before connecting to the EXT I/O connector” (p. 1 2) carefully. The EXT I/O interface can be used to perform the following types of control: Capability Operations (signals) (1) Acquiring comparator judgment Start measurement (TRIG signal)
Page 129: Connectors
Connections (Instrument and Control Device) Instrument connector and compatible connectors 19 18 17 16 15 14 13 12 11 10 9 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 Instrument D-sub 37-pin connector Female #4-40 inch screw...
Page 130: X84; Signal Functions
Connections (Instrument and Control Device) The connector frame is connected to the instrument’s rear panel (metal portion) as well as the power supply inlet’s protective ground terminal. When loading panel data by means of a command or touch panel operation, fix pins 4, 5, 22, 23, and 24 to ON or OFF (so that they are all either open or all shorted).
Page 131 Connections (Instrument and Control Device) (3) Output signals Signal Description For more information This signal is output when measurement completes. The “EOM signal output comparator judgment results, ERR signal, and BIN signal are type” (p. 1 37) updated when the EOM signal is output. This signal is output when a contact error (display: NoCntct), “3.5 Measurement temperature compensation error (display: Err.TC), or other error...
Page 132 Connections (Instrument and Control Device) Output signal functionality can be switched when the BIN measurement setting is changed. When BIN measurement is set to (default setting), these signals can be used as 11-bit general-purpose output pins in addition to being used for the purpose of acquiring comparator judgment results (HI, IN, LO). When BIN measurement is set to ON, the BIN judgment results are output from pins 13 to 17 and pins 31 to 36.
Page 133 Connections (Instrument and Control Device) (4) Signal table LOAD0 to LOAD4 LOAD4 LOAD3 LOAD2 LOAD1 LOAD0 Panel number − Panel 1 Panel 2 Panel 3 Panel 4 Panel 5 Panel 6 Panel 7 Panel 8 Panel 9 Panel 10 Panel 11 Panel 12 Panel 13 Panel 14 Panel 15...
Page 134: X84; Internal Circuit Architecture
Connections (Instrument and Control Device) Internal circuit architecture • Use ISO_COM as the common pin for both input signals and output signals. • If a large current will flow to common wiring, branch the output signal common wiring and input signal common wiring near the ISO_COM pin.
Page 135: X84; Electrical Specifications
Connections (Instrument and Control Device) Electrical specifications Input Input type Photocoupler-isolated no-voltage contact input (current sink or signals current source) Input on Residual voltage of 1 V or less, input on current of 4 mA (reference values) Input off Open (interrupting current of 100 µA or less) Output Output type Photocoupler-isolated open drain output (non-polar)
Page 136 Connections (Instrument and Control Device) Output circuitry Instrument Instrument Output Output 50 mA max 50 mA max 30 V max Connection to LED Connection to relay Instrument Output Instrument Output 50 mA max Negative- Output logic output Negative-logic output Wired or Programmable Programmable Instrument Instrument controller controller Output...
Page 137: Configuring External Input And Output
Configuring External Input and Output 11.4 Configuring External Input and Output This section describes how to configure settings related to external input and output. Trigger source: EXTERNAL p. 3 9 Settings related to input Input filter: p. 1 36 • “4.3 BIN Measurement (Using Multiple Judgment Standards)” (p. 5 7) Settings related to •...
Page 138: X84; Eom Signal Output Type
Configuring External Input and Output TRIG signal operation while the input filter is set to ON (Chatter) Response Measurement time During measurement processing Hold the input signal until the response time has passed. EOM signal output type You can choose to either hold the EOM signal’s output until the next trigger is received or output the set pulse.
Page 139: Input Test/Output Test
Input Test/Output Test 11.5 Input Test/Output Test In addition to switching output signals on and off manually, you can view input signal status information on the instrument’s screen. (Measurement screen) MENU > EXT I/O > EXT I/O TEST Touch the signal you wish to output. Input a signal from the connected device. Check the connected device to verify The corresponding indicator will turn green that the signal is being output from the...
Page 140: Timing Chart
Timing Chart 11.6 Timing Chart Each signal’s level indicates whether the contact is in the on or off state. When using the current source (PNP) setting, the signal level will be the same as the EXT I/O connector’s voltage level. When using the current sink (NPN) setting, the HI and LO voltage levels will be reversed.
Page 141 Timing Chart (1) When the trigger source is set to EXTERNAL and EOM output is set to HOLD Inputting the TRIG signal will cause the EOM signal to turn off and measurement to start. When measurement completes, the EOM signal will turn on and remain on until the next TRIG signal is input.
Page 142: X84; Panel Load Timing
Timing Chart (3) When the trigger source is set to INTERNAL while the instrument is in the state The EOM signal will generate pulse output (with an output time measured in milliseconds). Once the HI, IN, LO, ERR, OB, or BIN0 to BIN9 signal turns on, it will remain on when measurement starts and will continue in that state until the next measurement completes.
Page 143: X84; Output Signal Status When The Instrument Is Turned On
Timing Chart Output signal status when the instrument is turned on Once the display switches from the Startup screen to the Measurement screen after the instrument is turned on, the EOM signal will turn on. If EOM output is set to PULSE, the EOM signal will remain off.
Page 144: Printing
Printing Printing process (1) Configure the printer. (p. 1 44) (2) Connect the printer to the instrument. (p. 1 46) (3) Configure the instrument. (p. 1 46) (4) Print (p. 1 47) • Measured values and judgment results • List of measurement conditions and settings • Statistical calculation results You will need: 9442 Printer 9443-01 AC Adapter (for Japan) or 9443-02 AC Adapter (for countries other than Japan)
Page 145: Printer Settings
Printer Settings 12.1 Printer Settings Turn off the 9442 Printer. Turn on the 9442 while holding down the [ON LINE] switch and release the switch once the printer starts printing. The current settings will be printed. The following message will be printed after the settings: Continue? :Push ‘On-line SW’ Write? :Push ‘Paper feed SW’ Press the [ON LINE] switch.
Page 146 Printer Settings Set the DIP SW2 and DIP SW3 switches Press the [ON LINE] switch or the [FEED] as described in the table below (see switch. Steps 3 and 4). This completes the configuration process, causing the following message to be Once you have finished setting DIP SW3 printed: switch No.
Page 147: Connecting The Printer To The Instrument
Connecting the Printer to the Instrument 12.2 Connecting the Printer to the Instrument Before connecting, read “Before connecting a printer” (p. 1 2) carefully. Connection method Power Main power switch Rear connections 9444 Connection Cable 9442 Printer Power 12.3 Configuring the Instrument MENU (Measurement screen) >...
Page 148: Printing
Printing 12.4 Printing Before printing, check the instrument’s settings (p. 1 46) to be sure they are correct. Print parameters The parameters that are set to be output as described in “9.3 Data Output Settings” (p. 1 13) will be printed.
Page 149 Printing Print examples „Voltage measured values, temperature measured values • Voltage measured values • Voltage measured values, temperature measured values -1098.3825mV 0.04428mV ,+26.3C 0.05536mV + 299.4894mV ,+26.3C + 199.6209mV +1198.2750mV ,+26.3C + 395.2712mV + 1.497878 V ,+26.4C + 998.5098mV NoCntct ,+26.4C +1198.2109mV +OvrRng ,+26.4C + 1.497850 V -OvrRng ,+26.4C NoCntct...
Page 150 Printing „List of measurement conditions and settings MODEL DM7276-03 FIRMWARE V1.00 PRODUCT NO. 1234567890 MEASUREMENT VOLT/C RANGE 1000mV SPEED MEDIUM TRIGGER INTERNAL CONTACT CHECK ON AUTO HOLD INPUT Z 10MOhm SMOOTHING NULL SCALING COMP +1000.000mV 0.000mV DIGITS „Statistical calculation results • With comparator on • With BIN on DATE - TIME 2015/01/11 23:32:08 DATE - TIME 2015/01/11 23:34:16 NUM :117...
Page 151: Specifications
Specifications Scope: These specifications apply to the following products. DM7275-01, DM7276-01 Precision DC Voltmeter DM7275-02, DM7276-02 Precision DC Voltmeter (with GP-IB interface) DM7275-03, DM7276-03 Precision DC Voltmeter (with RS-232C interface) The information followed by “(-02 model)” is specific to the model DM7275-02 and DM7276-02 and the information followed by “(-03 model)”...
Page 152: Measurement Specifications
Measurement Specifications Mass DM7275-01, DM7276-01: Approx. 2.3 kg (81.1 oz.) DM7275-02, DM7275-03, DM7276-02, DM7276-03: Approx. 2.4 kg (84.7 oz.) Product warranty 1 year Accessories See “Accessories” (p. 2 ). Options See “Options (Sold Separately)” (p. 3 ). 13.2 Measurement Specifications Basic specifications Measurement parameters DC voltage, temperature Measurement ranges DC voltage: ±120.000 00 mV (100 mV range) to ±1010.000 0 V (1000 V range)
Page 153 Measurement Specifications Noise rejection ratio CMRR: Ω (Voltage measurement) Signal source resistance: 1 k DC CMRR: 140 dB or greater AC CMRR: 100 dB or greater (±1% of supplied power supply frequency, integration time of n × PLC setting) (n: integer value; PLC: power line cycle) NMRR: Power supply Power supply...
Page 154 Measurement Specifications Parameter Description Time Acquision time (RUN state) 50 Hz power 60 Hz power FAST (1PLC) 26.9 ms 23.5 ms MEDIUM (10PLC) 245 ms 205 ms SLOW (100PLC) 3.92 s 3.37 s Integration time other than above: Integration time + 5 ms Calculation time 0.1 ms From EOM signal output to TRIG signal...
Page 155: X84; Accuracy Specifications
Measurement Specifications Accuracy specifications Conditions of guaranteed Guaranteed accuracy period: 1 year accuracy Temperature and humidity for guaranteed accuracy: 23°C ±5°C (73°F ±9°F), 80% RH or less Warm-up time: 1 hr. Measurement cable Low thermal electromotive force cable (FLUKE 5440A-7005) Voltage measurement DM7275-01, DM7275-02, DM7275-03: accuracy See “Separate table 1 (DM7275)” (p. 1 56). DM7276-01, DM7276-02, DM7276-03: See “Separate table 2 (DM7276)”...
Page 156 Measurement Specifications Linearity: Linearity is already included in the voltage measurement accuracy and need not be added again. |Vin| ≤ 300 V: 0.0001% rdg. + 0.0001% f.s. |Vin| > 300 V: 0.0001% rdg. + 0.0001% f.s. + voltage coefficient error Temperature measurement Accuracy specifications Accuracy...
Page 157: Functional Specifications
Functional Specifications 13.3 Functional Specifications Display measured values Settings V, V°C Default setting Range switching Settings AUTO, MANUAL Default setting AUTO Ω Input resistance Settings 10 M , AUTO Ω switching (100 V range and 1000 V range: fixed at 10 M Ω Default setting 10 M Display digit selection...
Page 158 Functional Specifications Temperature Calculation formulas / (1 + α (T-T compensation : Measured value after temperature compensation : Voltage measured value after NULL calculation T: Temperature α: Temperature coefficient [ppm/°C] : Reference temperature Settings Temperature compensation: ON, OFF Temperature coefficient: -1000 ppm/°C to +1000 ppm/°C Reference temperature: -10.0°C to 60.0°C Default settings Temperature compensation: OFF...
Page 159 Functional Specifications Comparator Operation Judgment: HIGH judgment: Measured value > upper limit value IN judgment: Upper limit value ≥ measured value ≥ lower limit value LOW judgment: Lower limit value > measured value Judgment delay: Outputs judgment results once the same judgment has been made the set number of times.
Page 160 Functional Specifications Panel save and panel Number of panels load operation Saved information Time and date of save, measured value display, measurement range selection, input resistance selection, number of display digits, integration time, smoothing, trigger setting (measurement count, delay), NULL, temperature compensation, scaling, contact check, comparator, BIN, absolute value judgment, auto hold, label display, sub-display Panel name...
Page 161 Functional Specifications Key lock Operation When set from the front panel, all operations other than the cancellation key are disabled. Operation of the front panel is disabled while the KEY_LOCK signal is being input and while a valid LOAD signal is being input.
Page 162 Setting SCPI ID: Up to 127 characters Default setting Blank (HIOKI, model name, serial number, software version) Remote When communicating with the LAN, USB, RS-232C, or GP-IB interface, places the instrument in the remote state and disables touch panel and key operations.
Page 163: Interface Specifications
Interface Specifications 13.4 Interface Specifications LAN (standard Standard compliance IEEE 802.3 equipment) Transmission method 10BASE-T, 100BASE-TX (automatic detection) Full-duplex transmission Protocol TCP/IP Connector RJ-45 Type of information Settings and measurements via communications commands sent and received Settings IP address, subnet mask, default gateway Communications command port: 1 to 9999 Default settings IP address: 0.0.0.0...
Page 164 Interface Specifications RS-232C Connector D-sub 9-pin male with fastening screw #4-40 (-03 model) Transmission method Asynchronous, full duplex Transmission speeds 9600 bps, 19200 bps, 38400 bps Number of data bits Number of stop bits Parity bit None Delimiters Transmit: CRLF; receive: CR or CRLF Flow control None Protocol...
Page 165 Interface Specifications EXT I/O Connector D-sub 37-pin female with fastening screw #4-40 (standard equipment) Input Electrical specifications • Isolation Photocoupler-isolated no-voltage contact input (Support for current sink and source output) • Input on Residual voltage of 1 V or less Input on current: 4 mA (reference value) •...
Page 166: Maintenance And Service
When calibration or repair is requested to Hioki, the settings will be returned to the default settings. Before requesting calibration or repair, we recommend saving the settings of the instrument in a USB flash drive.
Page 167: Q&A (Frequently Asked Questions)
“2. Measurements” (p. 1 69) “3. Communications” (p. 1 71) “4. EXT I/O” (p. 1 73) “Frequently Asked Questions for External Control (EXT I/O)” (p. 1 75) If unable to resolve the issue, please contact your authorized Hioki distributor or reseller. 1. General issues Issue Items to check Possible causes → Solutions...
Page 168 Q&A (Frequently Asked Questions) Issue Items to check Possible causes → Solutions No judgment Buzzer setting The function is OFF. p. 5 5 → Set the function to ON. sound. for comparator function Buzzer volume is OFF. → Set the volume to a value other p. ...
Page 169 Q&A (Frequently Asked Questions) Issue Items to check Possible causes → Solutions Measured value Scaling The offset setting is not correct. → Turn scaling OFF, or reconfigure differ from function p. 8 2 expected value. (A the setting properly. negative value is Measurement cable connection Cable is not connected properly.
Page 170 Q&A (Frequently Asked Questions) Issue Items to check Possible causes → Solutions Measured Temperature sensor There is a problem with the temperature is not connection. displayed correctly. → Connect the temperature sensor by inserting the plug all the way in. p. 2 7 The specified temperature sensor has not been used.
Page 171 Q&A (Frequently Asked Questions) The instrument is Green LED Unlit (LAN)→ Check the cable. p. 1 08 not responding at on the LAN (LAN)→ Check that the LAN setting all. connector on of the instrument and control device p. 1 05 the rear of the is the same.
Page 172 Q&A (Frequently Asked Questions) 4. EXT I/O Operation can be easily confirmed by referring to “11.5 Input Test/Output Test” (p. 1 38). Issue Items to check Possible causes → Solutions The instrument is “11.5 Input IN/OUT displayed The wiring is incorrect. not operating at Test/Output does not match →...
Page 173 Q&A (Frequently Asked Questions) Issue Items to check Possible causes → Solutions EOM signal is not Measured Not updated See No. 3-2 above. p. 1 68 output. value EOM signal logic (The EOM signal turns ON once measurement is completed.) EOM signal Pulse The pulse output time is short and setting the controller cannot detect the EOM signal.
Page 174: X84; Frequently Asked Questions For External Control (Ext I/O)
Measurement values can be acquired using the sample application. be acquired using a foot switch? The sample application can be downloaded from our website (http:// www.hioki.com). 14.2 Cleaning To clean the instrument and optional equipment, wipe gently with a soft cloth moistened with water or mild detergent.
Page 175: Error Displays
The following messages are displayed on the screen when the instrument malfunctions or encounters an abnormal measurement state. • If you feel that the instrument may be malfunctioning, contact your authorized Hioki distributor or reseller after reviewing the information provided in “Q&A (Frequently Asked Questions)” (p. 1 68).
Page 176 Error Displays Display Description Solution ERR:063 Error while reading the An error occurred while The file may be damaged. USB memory. reading the USB flash drive. Recover the file or use a different USB flash drive. ERR:064 Error while reading the An error occurred while The file may be damaged.
Page 177 Error Displays Display Description Solution ERR:999 Error An error due to other reasons. Malfunction of the instrument. Request service. INFO:001 Set NULL. Current measured values will be acquired as NULL. INFO:002 NULL function will be NULL function will be turned turned off. OFF. INFO:003 Lock the keys and return Enables the key lock and to the main screen.
Page 178 Error Displays Display Description Solution INFO:081 Enter password for Enter the password for Adjustment Mode. adjustment mode. Err.Cal Compensation values for If this error is displayed self-calibration are not continuously, request for correct. There is a failure in service. communicating with the A/ D converter due to external noise or the instrument is malfunctioning.
Page 179: Disposing Of The Instrument
Disposing of the Instrument 14.4 Disposing of the Instrument The instrument uses a lithium battery as a backup for its clock. When disposing the instrument, remove the lithium battery and dispose the battery and instrument in accordance with local regulations. WARNING To avoid electric shock, turn OFF the main power switch and disconnect the power cord and measurement cables before removing the lithium battery.
Page 180: License Information
License Information The instrument uses IwIP open-source software. lwIP’s License lwIP is licenced under the BSD license: Copyright (c) 2001-2004 Swedish Institute of Computer Science. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1.
Page 181: Appx. 1 Block Diagram
Appendix Appx. 1 Block Diagram Meas-circuit Switching power power supply supply High EXT I/O Contact GP-IB/ check RS232C Measurement block Control block • The voltage detected between the HIGH and LOW terminals is adjusted appropriately and connected to a high-impedance amp. (A) From the 100 mV range to the 10 V range, the input resistance is switched between high-Z (10 Ω...
Page 182: Appx. 2 Measuring The Enclosure
Measuring the Enclosure Potential of Laminated Lithium-ion Batteries Appx. 2 Measuring the Enclosure Potential of Laminated Lithium-ion Batteries This appendix addresses measurement of the enclosure potential of laminated lithium-ion batteries, including a description of causes of such potentials and precautions that should be observed during measurement.
Page 183: X84; Enclosure Potential Measurement
Measuring the Enclosure Potential of Laminated Lithium-ion Batteries Standard electrode potential of materials used in lithium-ion batteries Standard electrode Area Material potential Positive electrode +1 V (1-n) Enclosure -1.7 V Negative electrode -2.9 V (1-n) Because the enclosure aluminum has a high potential relative to the negative electrode, the occurrence of an insulation defect between the negative electrode and the enclosure aluminum while another insulation defect is occurring between the electrolyte and the enclosure aluminum can trigger a reduction reaction of the aluminum enclosure, generating an Li-Al alloy.
Page 184: Response Time
Measuring the Enclosure Potential of Laminated Lithium-ion Batteries Response time The 63% response time can be calculated using the following formula, where R indicates the resistance between the HIGH and LOW terminals and C the capacitance between the lithium-ion battery’s positive electrode and its enclosure aluminum: 63% response time = C Ω...
Page 185: Voltage Measurement
Causes of Error in Voltage Measurement Appx. 3 Causes of Error in Voltage Measurement Thermal electromotive force Thermal electromotive force is the potential difference that occurs at connections between different metals, for example between the measurement cable’s metal pins and the measurement target. When this thermal electromotive force is large, an error will be introduced to measurements (see figure below).
Page 186 Causes of Error in Voltage Measurement Thermal electromotive force relative to copper Thermal electromotive Metal force (μV/°C) Nickel -22.4 Platinum -7.6 Aluminum -3.4 Lead -3.2 Brass -1.6 Carbon -0.6 Silver -0.2 Zinc Copper Gold Iron 12.2 Use a metal with a positive value for contacts facing copper and a metal with a negative value for the opposite side.
Page 187: X84; Effects Of High-Voltage Measurement
This type of noise is believed to be caused by lattice defects and contamination in the amplifier. Although Hioki strives to carry out inspections to reduce burst noise, it is not possible to completely eliminate this type of noise.
Page 188: Appx. 4 Noise Countermeasures . Appx.8
Noise Countermeasures Appx. 4 Noise Countermeasures Effects of induced noise A significant amount of noise may be generated by components and devices such as power cords, fluorescent lights, solenoid valves, and computer displays. The following phenomena may result in noise that affects resistance measurement: 1.
Page 189 Noise Countermeasures Electromagnetic coupling from a high-current circuit High-current circuits give off a magnetic field, and even larger magnetic fields may be generated by transformers or choke coils with a large number of turns. The voltage induced by a magnetic field is affected by distance and area (see Figure 3).
Page 190: X84; Effects Of Conductive Noise
Noise Countermeasures Using the instrument with the power supply frequency set to 60 Hz in a region with 50 Hz power will cause measured value wobble even if the integration time is set in PLC units. Figure 6. Noise Rejection Characteristics Using Integration Effects of conductive noise Conductive noise embodies a channel of potential noise introduction that is separate from induced noise, which is superposed on measurement targets or measurement cables.
Page 191: Appx. 5 Self-Calibration
An effective approach for dealing with conductive noise is to implement countermeasures while monitoring the results with the Hioki 3145 Noise HiLogger. Once the offending circuit has been identified, the countermeasures depicted in Figure 2 provide an effective way to address the issue.
Page 192: Targets
Measuring Multiple Targets Appx. 6 Measuring Multiple Targets To measure multiple targets with a single instrument, you will need to provide an external switching relay. Please note the following important considerations when designing the switching device: Relay selection (1) Choose a relay with low thermal electromotive force. Thermal electromotive force increases in the following order: Latching <...
Page 193 Measuring Multiple Targets Taking steps to prevent short-circuits Exercise caution concerning the following so as to avoid shorting the measurement target: (1) Design the switching device so that all contacts are off when it is turned on and off. (2) Allow an interval of time when all contacts are off when switching contacts (“break before make”). (3) Insert a fuse into the measurement line. Avoid use of fuses with a rating of 1 A or less and resettable fuses as they have a large thermal electromotive force.
Page 194: Appx. 7 Rack Mounting
Rack Mounting Appx. 7 Rack Mounting Rack-mounting hardware can be attached to the instrument after removing the screws on the sides. Rack-mounting hardware reference figures Spacer (EIA- and JIS-compliant) This spacer should be installed between the instrument and the rack-mounting hardware. Two are required. SPCC t: 1.6 mm 2×φ5 4×C2 Rack-mounting bracket (EIA-compliant, to mount 1 instrument)
Page 195 Rack Mounting Rack-mounting bracket (EIA-compliant, to mount 2 instruments) Two are required (one on the left and one on the right). SPCC t: 2.0 mm 21.5 8.35 10.3 2×(R) 2×(R) 2×φ4.5 10.3 Rack-mounting bracket (JIS-compliant, to mount 1 instrument) SPCC t: 2.0 mm 4×(R) 2×φ4.5 216.4 12×C2 2×φ4.5 1.800.561.8187 information@itm.com www. .com Appx.
Page 196 Rack Mounting Rack-mounting bracket (JIS-compliant, to mount 2 instruments) SPCC t: 2.0 mm 2×φ4.5 439.6 2×φ4.5 12×C2 Connecting bracket (EIA- and JIS-compliant) Two are required (same design used on both left and right). 2×φ3.5 SPCC t: 1.6 mm 4×φ4.5 2×C2 Max. 5 2×M3 screw hole Notches (one of which can be found in area labeled A) serve to prevent distortion of the shape of the hole caused by flexing (total of four).
Page 197: X84; Installation Instructions
• When removing the rack-mounting brackets and restoring the instrument to its bench-top configuration, use the screws with which the instrument shipped at the time of purchase (feet: M3 × 8 mm; sides: M4 × 6 mm). If those screws are lost or damaged, please contact your authorized Hioki distributor or reseller. When installing the instrument in a rack, use a commercially available shelf or other suitable part to ensure adequate strength. Remove the feet on the bottom of the instrument and the screws from the side covers.
Page 198 Rack Mounting (2) Attach the rack-mounting brackets. For one instrument EIA-compliant hardware You will need: Four M4 × 10 mm screws Insert a spacer on both sides of the instrument and attach the rack-mounting brackets. JIS-compliant hardware You will need: Four M4 × 10 mm screws Insert a spacer on both sides of the instrument and attach the rack-mounting brackets with the M4 × 10 mm screws. 1.800.561.8187 information@itm.com www. .com Appx.
Page 199 Rack Mounting For two instruments EIA-compliant hardware You will need: Ten M4 × 10 mm screws and four M3 × 6 mm screws Insert a spacer on the outside of each instrument (no spacers are needed where the connecting brackets will be attached) and attach the rack-mounting brackets with the MR × 10 mm screws (total of four). Attach the connecting brackets to the inside of each instrument using the M4 × 10 mm screws (total of six).
Page 200 Rack Mounting JIS-compliant hardware You will need: Ten M4 × 10 mm screws and four M3 × 6 mm screws Attach a connecting bracket to the inside of each instrument with M4 × 10 mm screws (total of six). Position the instruments so that the connecting brackets are aligned and secure them together with the four M3 × 6 mm screws (on top and bottom). Insert a spacer on the outside of each instrument (no spacers are needed where the connecting brackets are attached) and attach the rack-mounting bracket with the M4 × 10 mm screws (total of four).
Page 201: Appx. 8 Outline Drawings
Outline Drawings Appx. 8 Outline Drawings (Unit: mm) 1.800.561.8187 information@itm.com www. .com Appx.
Page 202: Appx. 9 Calibration
Calibration Appx. 9 Calibration Calibration conditions • Ambient temperature and humidity: 23°C ±5°C, 80% RH or less • 60 min. warm-up time • Power supply: 100 to 240 V ±10%, 50 Hz/60 Hz, distortion rate of 5% or less • External magnetic field close to that characterizing terrestrial magnetism •...
Page 203: Appx. 10 Adjustment
Adjustment Appx. 10 Adjustment The adjustment screen accessible on the MENU > SYSTEM screen is used by Hioki for repair and adjustment purposes. It is not for customer use. 1.800.561.8187 information@itm.com www. .com Appx.
Page 204 Index Connector.............. 15 Pin layout ............128 ABS MODE............... 52 Absolute value judgment function......52 Acquiring measured values ........97 Adjusting touch panel position ........90 FAST ................. 36 Application disc............2, 8 Feet ................14 AUTO ................ 35 Files ................ 123 Auto-hold ..............
Page 205 Index Loading From internal memory (panel data) ....... 61 Q&A ................ 168 From USB flash drive (panel data) ...... 122 LOAD signal ............129 Rack ..............Appx.14 Range ..............18, 35 Main power switch ............ 15 Repair ..............167 MANUAL ..............36 Replacement parts ..........
Page 206 Index TRIG signal............. 129 Cable ............... 4 Connection ............99 Connector.............. 15 Settings ..............98 USB driver ..............99 USB flash drive Connector.............. 14 How to use ............115 Variability ..............69 Voltage trends............43 Waveform ..............45 When the instrument starts up........91 Zero-point ..............
Page 207 13-09 1.800.561.8187 information@itm.com www. .com...

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Dm7275-03 Dm7276 series Dm7275-01 Dm7276-03 Dm7276-01 Dm7276-02 ... Show all

Hioki DM7275 Series Instruction Manual

Introduction

Verifying Package Contents

Safety Information

Operating Precautions

1 Overview

2 Preparing for Measurement

3 Measurement

Values)

4 Judging Measured Values

5 Saving and Loading Measurement Conditions (Internal Memory)

Conditions (Panel Load Function)

6 Useful Functionality

7 System Settings

8 Preparing to Use USB, RS-232C, GP-IB, and LAN Control

9 Outputting Data

10 Using a USB Flash Drive

11 External Control (EXT I/O)

12 Printing

13 Specifications

14 Maintenance and Service

15 License Information

Appendix

Appx. 1 Block Diagram

Appx. 2 Measuring The Enclosure

Lithium-Ion Batteries

Appx. 4 Noise Countermeasures . Appx.8

Appx. 5 Self-Calibration

Appx. 7 Rack Mounting

Appx. 8 Outline Drawings

Appx. 9 Calibration

Appx. 10 Adjustment

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Summary of Contents for Hioki DM7275 Series