YOKOGAWA WT200 User Manual
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YOKOGAWA WT200 User Manual

YOKOGAWA WT200 User Manual

Digital power meter
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Digital Power Meter
IM 253421-01E
1st Edition

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Summary of Contents for YOKOGAWA WT200

  • Page 1 Digital Power Meter IM 253421-01E 1st Edition...
  • Page 2 Thank you for purchasing the YOKOGAWA WT200 Digital Power Meter. This User’s Manual contains useful information regarding the instrument’s functions and operating procedures, as well as precautions that should be observed during use. To ensure proper use of the instrument, please read this manual thoroughly before operating it.

  • Page 3: Checking The Contents Of The Package

    WT200 Main Unit Check that the model code and suffix code given on the name plate located at the right side of the main body are according to your order. WT200 (model code: 253421) MODEL MODEL SUFFIX...
  • Page 4 Checking the Contents of the Package Standard Accessories The following standard accessories are supplied with the instrument. Make sure that all items are present and undamaged. Name Part No. Q’ty Remarks 1 Power cord see page ii — 2 24-pin connector A1004JD For remote, D/A output (only provided with options /DA4 or /CMP)

  • Page 5: Safety Precautions

    If this instrument is used in a manner not sepecified in this manual, the protection provided by this instrument may be impaired. Also,YOKOGAWA Electric Corporation assumes no liability for the customer’s failure to comply with these requirements. The following symbols are used on this instrument.
  • Page 6 The power fuse of this instrument cannot be replaced by the user, because it is located inside the case. If you believe the fuse inside the case is blown, contact your nearest YOKOGAWA dealer as listed on the back cover of this manual. Do not Remove any Covers There are some areas with high voltage.

  • Page 7: Structure Of This Manual

    Structure of this Manual This User's Manual consists of the following 16 chapters and an index. Chapter 1 Functional Overview and Digital Display Describes the input signal flow, functional overview, digital numbers/characters, initial menus that are displayed when a key is pressed, and other information.. Chapter 2 Names and Uses of Parts and the Overrange and Error Displays Gives the name of each part and each key, and describes how to use it.

  • Page 8: Conventions Used In This Manual

    Conventions Used in this Manual Symbols Used The following symbol marks are used throughout this manual to attract the operator’s attention. A symbol mark affixed to the instrument. Indicates danger to personnel or instrument and the operator must see the User's Manual.
  • Page 9 Conventions Used in this Manual Markings used for Descriptions of Operations Indicates the relevant panel keys and indicators to carry out the Keys operation. The procedure is explained by a flow diagram. For the meaning of Procedure each operation, see the example below. The operating procedures are given with the assumption that you are not familiar with the operation.

  • Page 10: Table Of Contents

    Contents Checking the Contents of the Package ................... ii Safety Precautions ......................... iv Structure of this Manual ......................... vi Conventions Used in this Manual ....................vii Chapter 1 Functional Overview and Digital Display System Configuration and Block Diagram ............... 1-1 Functions .........................
  • Page 11 Contents Chapter 6 Integration Integrator Functions ......................6-1 Setting Integration Mode, Integration Type, and Integration Timer ........6-4 Displaying Integrated Values ................... 6-6 Precautions Regarding Use of Integrator Function ............6-9 Chapter 7 Using the Harmonic Analysis Function (Optional) Harmonic Analysis Function ..................... 7-1 Setting the PLL Source and Harmonic Distortion Method ..........
  • Page 12 Contents Chapter 13 Communication Commands 1 (System of Commands before the IEEE 488.2-1987 Standard) 13.1 Commands ........................13-1 13.2 Sample Program ......................13-13 13.3 For Users Using Communication Commands of Digital Power Meter 2533E ....13-21 Chapter 14 Communication Commands 2 (System of Commands Complying to the IEEE 488.2-1987 Standard) 14.1 Overview of IEEE 488.2-1987 ..................
  • Page 13 Contents Chapter 16 Specifications 16.1 Input ..........................16-1 16.2 Measurement Functions ....................16-3 16.3 Frequency Measurement ....................16-5 16.4 Communication (optional) ....................16-5 16.5 Computing Functions ..................... 16-5 16.6 Display Functions ......................16-6 16.7 Integrator Function ......................16-6 16.8 Internal Memory Function ....................16-7 16.9 D/A Converter (optional) ....................

  • Page 14: Chapter 1 Functional Overview And Digital Display

    Chapter 1 Functional Overview and Digital Display System Configuration and Block Diagram System Configuration Input Voltage Contact / relay output either input Equipment Analog output WT200 under Recorder (253421) Current test Input input either GP-IB or Personal RS-232-C Computer Ext.

  • Page 15: Functions

    Wiring Method The wiring method indicates the circuit configuration used to measure the voltage, current, and power. The WT200 uses a single-phase, two-wire (1φ2W) wiring method. Display Functions This function enables display of measured/computed values using three red high- intensity 7-segment LED displays.

  • Page 16: Storing/Recalling Measured Data

    1.2 Functions Average active power during integration This function computes the average active power within the integration period. It is derived by dividing the watt hour (integrated active power) by the elapsed time of integration. Integrator Functions This function enables integration of active power and current. All measurement values (and computed values) can be displayed, even when integration is in progress, except for the integrated values (watt hour and ampere hour) and elapsed integration time.
  • Page 17 This function enables you to reset the setting parameters to initial (factory) settings. Zero-level compensation Zero level compensation refers to creating a zero input condition inside the WT200 and setting the level at that point as the zero level. Zero level compensation must be performed in order to satisfy the specifications of this instrument.

  • Page 18: Digital Numbers/Characters, And Initial Menus

    Digital Numbers/Characters, and Initial Menus Digital Numbers/Characters This instrument is equipped with a 7-segment LED which imposes some restrictions on the usable characters. The numbers/characters are styled as follows. ^(Exponent) Small c − Small h × ÷ Initial Menus Every function of this instrument can be set using the menus on the display. The initial displays which appear when the operation keys are pressed, are shown below.
  • Page 19 1.3 Digital Numbers/Characters, and Initial Menus • Setting the Filter, Averaging, Scaling, Ext. Sensor Input, and Initializing Setting Parameters ( Display C ) (Filter setting) SETUP (Averaging setting) (Scaling setting) (Ext. sensor input setting) (Initiallizing set-up parameters) (Computation, crest factor settings) (Measurement synchronization source setting) (MAX hold setting) (Number of displayed digits)
  • Page 20 1.3 Digital Numbers/Characters, and Initial Menus • Setting Communication Interface (GP-IB) ( Display C ) LOCAL (Setting addressable mode A) SHIFT INTERFACE (Setting addressable mode B) (Setting talk-only mode) (Print mode setting: Setting plotter or printer output) (Setting communication commands according to IEEE 488.2-1987) •...

  • Page 21: Front Panel, Rear Panel And Top View

    Chapter 2 Names and Uses of Parts and the Overrange and Error Displays Front Panel, Rear Panel and Top View Front Panel 7-segment display Function/Unit display Operation keys → page 2-2 Handle Ventilation slot Power switch → page 3-12 Rear Panel External sensor input terminal →...

  • Page 22: Operation Keys And Function Display

    Operation Keys and Function Display Indicators for operation conditions Shows sampling, voltage/current overrange and measurement mode. A RANGE V RANGE SHIFT MAX HOLD Shows the voltage range setting menu (section 4.4). Turns ON/OFF the MAX hold function. When turned ON, the MAX HOLD indicator lights. A RANGE This is the same as the MAX hold setting under Shows the current range setting menu (section 4.4).

  • Page 23: Displays In Case Of Overrange/Error During Measurement

    Displays in case of Overrange/Error during Measurement Overrange display Overrange occurs when the measured voltage or current exceeds 140% of the rated measurement range. In that case the range will automatically be increased, however up to 140% of the maximum range. When this level is exceeded, the overrange display wil appear, which looks as follows.

  • Page 24: Chapter 3 Before Starting Measurements

    If the power cord becomes damaged, contact your nearest YOKOGAWA representative. Addresses may be found on the back cover of this manual.Refer to page ii for the part number of the appropriate power cord when placing an order.

  • Page 25: Installing The Instrument

    Installing the Instrument Installation Conditions The instrument must be installed in a place where the following conditions are met. Ambient temperature and humidity • Ambient temperature: 5 to 40˚C • Ambient humidity: 20 to 80% RH (no condensation) Horizontal position The instrument must be installed horizontally.
  • Page 26 3.2 Installing the Instrument Rack mount To install the instrument in a rack, use one of the following optional rack mount kits. • Rack mount kit (option) Specifications EIA Standard (for single mount) 751533-E2 JIS Standard (for single mount) 751533-J2 EIA Standard (for multiple mount) 751534-E2 JIS Standard (for multiple mount)

  • Page 27: Wiring Precautions

    Wiring Precautions WARNING • To prevent hazards, make sure to apply a ground protection before connecting the object being measured. • Always turn OFF the power to the object being measured before connecting it to the instrument. Never connect or disconnect the measurement lead wires from the object while power is being supplied to it, otherwise a serious accident may result.
  • Page 28 3.3 Wiring Precautions CAUTION Use lead wires that have sufficient margin in withstand voltage and current against the signal being measured. The lead wires must also have insulation resistance that is appropriate for the ratings. If measurement is carried out on a current of 20 A, use copper wires with a conductor cross-sectional area of at least 4 mm Note •...

  • Page 29: Improving The Measurement Accuracy

    SOURCE LOAD ± ± ± Input terminal ± WT200 The following figure shows the relationship between the voltage and current that leads to 0.1%, 0.01%, and 0.001% errors. Effect or 0.1% Effect of 0.01% Effect of 0.001% Less effect Measured current (A) 300 mA 3 A •...

  • Page 30: Connecting The Power Supply

    90 to 264 VAC Rated supply voltage frequency 50/60 Hz Permitted supply voltage frequency range 48 to 63 Hz Maximum power consumption 25 VA (at 120 VAC) or 35 VA (at 240 VAC) 3 pin consent WT200 Power cord (accessory) IM 253421-01E...

  • Page 31: Wiring The Measurement Circuit

    Wiring the Measurement Circuit WARNING When applying a current to be measured directly to the input terminals of the instrument, disconnect the input cable of the external sensor. A voltage might be generated by the external sensor input terminal when connected. CAUTION A load current flows in the thick lines show in the diagrams;...

  • Page 32: Wiring The Measurement Circuit When Using External Pt/Ct

    Wiring the Measurement Circuit when Using External PT/CT WARNING When using an external CT, do not allow the secondary side of the CT to go open-circuit while power is supplied, otherwise an extremely high voltage will be generated on the secondary side of the CT. CAUTION A load current flows in the thick lines shown in the diagrams;...

  • Page 33: Wiring The Measurement Circuit When Using The External Sensor

    Wiring the Measurement Circuit when Using the External Sensor WARNING • Use an external sensor that is enclosed in a case which has sufficient withstand voltage against the voltages to be measured. Use of bare sensor may cause an electric shock if the sensor is touched accidentally. •...
  • Page 34 This reduces the effects caused by field lines (caused by measurement current) entering this area and the external noise. Shunt-type current sensor The area created by the lead wires OUT H Input terminal of the WT200 ± External sensor cable OUT L Shield wires •...

  • Page 35: Turning The Power On/Off, Opening Messages

    Turning the Power ON/OFF, Opening Messages Item to be Checked before Turning ON the Power • Check that the instrument is installed correctly (see section 3.2, “Installing the Instrument”). • Check that the power cord is connected properly (see section 3.5, “Connecting the Power Supply”).
  • Page 36 3.9 Turning the Power ON/OFF,Opening Messages Opening Messages Display A Display B Display C Power switch No display All LED`s light up Extinguish (Model) No display Display differs depending on specs (Version) No display and options. (Only for/EX1, EX2) (E-2) (Only for/HRM option) (For/DA option) (For/CMP option)

  • Page 37: Chapter 4 Setting Measurement Conditions And Measurement Range

    Chapter 4 Setting Measurement Conditions and Measurement Range Selecting the Measurement Mode Keys Displays SAMPLE relevant FUNCTION AUTO AUTO V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP...
  • Page 38 4.1 Selecting the Measurement Mode Typical Waveform Types and Differences in Measured Values between Measurement Modes The WT200 does not support the mean value measurement mode in the following table. Measurement Mean-value Mean Linear mode rectification value value averaging Name Display —...

  • Page 39: Selecting The Measurement Synchronization Source

    Selecting the Measurement Synchronization Source Keys Displays SAMPLE relevant keys FUNCTION AUTO AUTO V OVER V RANGE A RANGE HOLD TIME MODE MAX HOLD TRIG A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL SETUP...

  • Page 40: Turning The Filter On/Off

    Turning the Filter ON/OFF Keys Displays SAMPLE relevant FUNCTION AUTO AUTO V OVER keys and V RANGE A RANGE HOLD TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL...

  • Page 41: Selecting The Measurement Range In Case Of Direct Input

    Selecting the Measurement Range in case of Direct Input Keys Displays SAMPLE relevant FUNCTION AUTO AUTO V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION...
  • Page 42 4.4 Selecting the Measurement Range in case of Direct Input Explanation Manual Range (fixed) versus Automatic Range (auto) The measurement range can be of one of the following types. The initial setting is Auto range ON. • Manual range Voltage range: Select from 600 V, 300 V, 150 V, 60 V, 30 V, and 15 V. Current range: Select from 20 A, 10 A, 5 A, 2 A, 1 A, 0.5 A, 200 mA, 100 mA, 50 mA, 20 mA, 10 mA, and 5 mA.
  • Page 43 4.4 Selecting the Measurement Range in case of Direct Input Power Range The measuring range for active power, apparent power and reactive power is determined as follows. Wiring Method Power Range voltage range × current range Single-phase, two-wire (1Φ2W) The maximum display is 99999 (when the number of displayed digits is 5). When the result of “voltage range ×...

  • Page 44: Setting The Scaling Constant When External Pt/Ct Is Used

    Setting the Scaling Constant when External PT/ CT is Used Keys Displays SAMPLE relevant FUNCTION AUTO AUTO V OVER keys and V RANGE A RANGE HOLD TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET...
  • Page 45 4.5 Setting the Scaling Constant when External PT/CT is Used Explanation About the Scaling Function This function is useful when measuring parameters such as voltage, current, and power by using an external transformer such as a potential transformer (PT) or a current transformer (CT).

  • Page 46: Selecting The Measurement Range And Setting The Scaling Constant When External Sensor Is Used (Option)

    Selecting the Measurement Range and Setting the Scaling Constant when External Sensor is Used (option) Keys Displays SAMPLE relevant FUNCTION AUTO AUTO V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN...
  • Page 47 4.6 Selecting the Measurement Range and Setting the Scaling Constant when External Sensor is Used (option) Explanation Scaling Function in combination with External Sensor Input This function is useful for measuring current, power and such when you are using an external sensor, and have connected their output to the input connector.

  • Page 48: Using The Averaging Function

    Using the Averaging Function Keys Displays SAMPLE relevant FUNCTION AUTO AUTO V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL...
  • Page 49 4.7 Using the Averaging Function Explanation About the Averaging Function This function performs exponential averaging or moving averaging on measurement values. When the displayed values are unsteady due to big fluctuations in power source or load, or due to the low frequency of the input signal, this function is useful to stabilize the displayed values for easier reading.

  • Page 50: Using The Max Hold Function

    Using the MAX Hold Function Keys Displays SAMPLE FUNCTION relevant AUTO AUTO V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE...

  • Page 51: Using The Four Arithmetical Operation Function

    Using the Four Arithmetical Operation Function Keys Displays SAMPLE relevant FUNCTION AUTO AUTO V OVER V RANGE A RANGE HOLD keys TIME MODE MAX HOLD TRIG A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL...
  • Page 52 4.9 Using the Four Arithmetical Operation Function Explanation Four Arithmetical Operations Function Displays the following computation results on display C. “ ” is displayed at the front when the computation results are being displayed. : A+B : A−B : A×B : A÷B : A÷B : A ÷B...
  • Page 53 4.9 Using the Four Arithmetical Operation Function : Displays the result of display A ÷ (display B) Computation example: The impedance (Z), resistance (R), and reactance (X) can be computed. Display A Display B Display C Arms |Z|= (Arms) Arms (Arms) Arms |X|=...

  • Page 54: Computing The Crest Factor

    4.10 Computing the Crest Factor Keys Displays SAMPLE relevant FUNCTION AUTO AUTO V OVER V RANGE A RANGE HOLD keys TIME MODE MAX HOLD TRIG A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL SETUP...

  • Page 55: Computing The Average Active Power During Integration

    4.11 Computing the Average Active Power during Integration Keys Displays SAMPLE relevant FUNCTION AUTO AUTO V OVER V RANGE A RANGE HOLD keys TIME MODE MAX HOLD TRIG A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET...

  • Page 56: Selecting The Number Of Displayed Digits

    4.12 Selecting the Number of Displayed Digits Keys Displays SAMPLE relevant keys FUNCTION AUTO AUTO V OVER V RANGE A RANGE HOLD TIME MODE MAX HOLD TRIG A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE...

  • Page 57: Chapter 5 Displaying The Results Of The Measurement And Computation

    Chapter 5 Displaying the Results of the Measurement and Computation Displaying Voltage, Current, and Active Power Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER...
  • Page 58 5.1 Displaying Voltage, Current, and Active Power Explanation Continuous Maximum Allowable Input • Voltage Up to a peak value of 1.5 kV or RMS value of 1.0 kV, whichever is less. • Current • 20 A to 0.5 A range Up to a peak value of 100 A or RMS value of 25 A, whichever is less.

  • Page 59: Displaying Apparent Power, Reactive Power, And Power Factor

    Displaying Apparent Power, Reactive Power, and Power Factor Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER keys and V RANGE A RANGE HOLD TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS...

  • Page 60: Displaying The Phase Angle

    Displaying the Phase Angle Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL...

  • Page 61: Displaying The Frequency

    Displaying the Frequency Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL SETUP...
  • Page 62 5.4 Displaying the Frequency Explanation Measurement Range The measurement range lies from 10 to 50 kHz. Depending on the internal timing, however, measurements can be done in the range from 4 to 10 Hz. At 100 Hz, 1 kHz, 10 kHz, 100 kHz, the measurement range is auto range. Maximum Reading of the Display and Units •...

  • Page 63: Displaying Peak Value, Four Arithmetic Operation Value, And Crest Factor

    Displaying Peak Value, Four Arithmetic Operation Value, and Crest Factor Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET...

  • Page 64: Chapter 6 Integration

    Chapter 6 Integration Integrator Functions Active power integration and current integration can be carried out. All measurement values (and computed values) can be displayed, even when integration is in progress, except for the integrated values (watt hour or ampere hour) and elapsed time of integration. Since integrated values of negative polarity can be also displayed, the consumed watt hour (ampere hour: only when the measurement mode is DC) value of the positive side and the watt hour value returning to the power supply of the negative side (ampere hour: only when...
  • Page 65 6.1 Integrator Functions Continous Integration Mode (Repeat Integration) • Integration starts: • after having pressed the START key; • when the elapsed time of integration reaches the integration timer preset time, the integrated value and elapsed time of integration are reset automatically and restarted immediately.
  • Page 66 6.1 Integrator Functions Display Resolution during Integration The display resolution for integrated values is 100000 counts. When the integrated value reaches 100000 counts, the decimal point shifts automatically. For example, if 0.00001 mWh is added to 9.99999 mWh, the display shows “10.0000 mWh. ” Display Function of Integrator Values By selecting the display function, you can display the polarity of the integrator values.

  • Page 67: Setting Integration Mode, Integration Type, And Integration Timer

    Setting Integration Mode, Integration Type, and Integration Timer Keys Displays SAMPLE relevant FUNCTION AUTO AUTO V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS...
  • Page 68 6.2 Setting Integration Mode, Integration Type, and Integration Timer Explanation Selecting the Integration Mode The following selections are available. The initial value is nor. • nor: Select this for manual or standard integration mode. Depending on the integration timer, this instrument will automatically decide the appropriate mode. •...

  • Page 69: Displaying Integrated Values

    Displaying Integrated Values Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER keys and V RANGE A RANGE HOLD TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL SETUP...
  • Page 70 6.3 Displaying Integrated Values 5. Stopping Integration Press the STOP key. The START indicator will extinguish and the STOP indicator will light. The displayed values will be held. STOP 6. Resetting Integration Press the RESET key. The STOP indicator will extinguish and the values on display A will be reset to 0.00.00.
  • Page 71 The maximum number of digits used to display the elapsed time of integration is nine (when the hour, minute, and second digits are added together). The WT200 displays the elapsed time of integration on display A. However, because the maximum number of digits that can be displayed on display A is five, all the digits of the elapsed time of integration may not be displayed in certain cases.

  • Page 72: Precautions Regarding Use Of Integrator Function

    Precautions Regarding Use of Integrator Function Relation between Integration Hold and the START/STOP key When the HOLD key is pressed, the display and communication output of the integrated results is being held while integration continues. The relation between this hold function and the START/STOP key is as follows.
  • Page 73 6.4 Precautions Regarding Use of Integrator Function Backup During Power Failures • If there is a power failure while integration is in progress, the integrated value and elapsed time of integration will be backed up. When the power is restored, the display will show the integrated results up to the time the power failure occurred.

  • Page 74: Chapter 7 Using The Harmonic Analysis Function (Optional)

    Chapter 7 Using the Harmonic Analysis Function (Optional) Harmonic Analysis Function This chapter explains the harmonics analysis function which can be applied to normal measurements of voltage, current and power. Analyzed/Displayed Items After having set the harmonic analysis function to ON, the harmonic component of voltage, current, or active power, will be analyzed and displayed for one of the input elements.
  • Page 75 7.1 Harmonic Analysis Function Holding the Display When you use the display hold function and change the order or display function while the harmonic analysis function is ON, you can display the harmonic data analyzed at the corresponding time. Updating the Displayed Data The display can be updated in the same way as for normal measurement.

  • Page 76: Setting The Pll Source And Harmonic Distortion Method

    Setting the PLL Source and Harmonic Distortion Method Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER keys and V RANGE A RANGE HOLD TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS...
  • Page 77 7.2 Setting the PLL Source and Harmonic Distortion Method Explanation Setting the PLL source For harmonic analysis, it is necessary to select the input to be used as the fundamental frequency (PLL source) for synchronization. (PLL stands for Phase Locked Loop.) •...

  • Page 78: Switching The Harmonic Analysis Function On/Off

    Switching the Harmonic Analysis Function ON/OFF Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER keys and V RANGE A RANGE HOLD TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET...

  • Page 79: Setting The Harmonic Order And Displaying The Results Of Harmonic Analysis

    Setting the Harmonic Order and Displaying the Results of Harmonic Analysis Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP...
  • Page 80 7.4 Setting the Harmonic Order and Displaying the Results of Harmonic Analysis Explanation Setting the Order of Harmonics The maximum order for which analysis results can be displayed varies depending on the frequency of the fundamental. Example • When the fundamental frequency is 50 Hz, up to 50 orders can be displayed; •...
  • Page 81 7.4 Setting the Harmonic Order and Displaying the Results of Harmonic Analysis Display C V: Shows each rms (computed) value of the 1st to 50th harmonic component of the voltage; A: Shows each rms (computed) value of the 1st to 50th harmonic component of the current;...

  • Page 82: Chapter 8 Storing/Recalling Measured Data And Setting Parameters From The

    Chapter 8 Storing/Recalling Measured Data and Setting Parameters from the Internal Memory Storing/Recalling Measured Data Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER keys and V RANGE A RANGE HOLD TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN...
  • Page 83 8.1 Storing/Recalling Measured Data Explanation Storing Measured Data (Storing into Internal Memory) The number of blocks which can be stored into the internal memory is as follows. During Normal Measurement During Harmonic Analysis 600 blocks 30 blocks Items which can be stored All the data that are obtained while the display is updated once are stored as one block of data.
  • Page 84 8.1 Storing/Recalling Measured Data Storage ON/OFF After having set the storage interval, select the store menu once again. The initial value is oFF. • on: Storing will start by pressing the ENTER key after selecting “on”; the STORE indicator will light while storage is in progress. •...
  • Page 85 8.1 Storing/Recalling Measured Data Recalling ON/OFF After having set the recalling interval, select the recall menu once again. The initial value is oFF. • on: Recalling will start by pressing the ENTER key after selecting “on”; the RECALL indicator will light while recalling is in progress. •...

  • Page 86: Storing/Recalling Setting Parameters

    Storing/Recalling Setting Parameters Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL SETUP...
  • Page 87 8.2 Storing/Recalling Setting Parameters Explanation Storing Setting Parameters Stores the current setting parameters which consist of the following. Four destinations (FiLE1/FilE2/FiLE3/FiLE4) are available. Measurement range, measurement mode, scaling settings, averaging settings, filter settings, integration settings, harmonic settings, plotter output settings, store/recall settings, and communication settings.

  • Page 88: Chapter 9 Using External Input/Output

    Chapter 9 Using External Input/Output Remote Control and D/A Output Connector (optional) Using the remote control and the D/A output connector, this instrument can be remotely controlled and D/A output can be done. The connector’s pin sequence and signal assignment is as follows. Connector’s Pin Sequence (Rear panel) Pin Assignment...

  • Page 89: Remote Control (Optional)

    Remote Control (optional) Controlling Integration To control integration, apply timing signals according to the timing chart below. Start Stop Reset Start Stop 5 ms min. EXT START 5 ms min. EXT STOP 5 ms EXT RESET Approx. Approx. Approx. Approx. 15 ms 15 ms 15 ms...

  • Page 90: D/A Output (Optional)

    D/A Output (optional) Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL SETUP...
  • Page 91 9.3 D/A Output (optional) • Setting Preset Integration Time Select preset integration time (Display C) RESET SHIFT INTEG SET Hour (Display A) ENTER ENTER Set value Move across digits SHIFT Minute Second (Display B) (Display C) ENTER ENTER Same as steps 4 and 5 Same as steps 4 and 5 Explanation D/A Output...
  • Page 92 9.3 D/A Output (optional) Setting the Integration Preset Time The D/A output of integrated values will be 5.0 V FS when the rated range has been input consequently during the preset integration time (rated integration time). Setting range: 0.00.00 (0 hrs 0 min 0 sec) to 10000.00.00 (10000 hrs 0 min 0 sec) The initial value is 1.00.
  • Page 93 9.3 D/A Output (optional) Relation between the output item and the D/A output voltage • Frequency D/A output Approx. 7.5 V 5.0 V 2.5 V 0.5 V 0.2 V Displayed 10 k 50 k value [Hz] • Integrated value D/A output Approx.

  • Page 94: Comparator Function (Optional)

    Comparator Function (optional) When the instrument is equipped with option /CMP you can compare the measured, computed, integrated, and analysis values with previously set limits and these results can be output by contact relay. Contact Relay Output This instrument is equipped with four contact relays (4ch) as follows. If the relay is not operating, the NC (Normally Closed) contact is closed.
  • Page 95 9.4 Comparator Function (optional) Dual Mode This mode allows you to combine the limit values of two relays (e.g. the upper value (Hi) and the lower value (Lo)) to determine the contact status. The four relays will be fixed as two pairs of ch1 & ch2 and ch3 & ch4. Setting the limit values of a pair of relays (e.g.
  • Page 96 9.4 Comparator Function (optional) CAUTION Make sure not to greatly vary the input signal when using the comparator function. Depending on the input signal used for determination, the instrument may display error codes (i.e. overrange) and this will change the output relays as follows. When using the output relay as a control signal, make sure to match these control signals with other equipments to eliminate erroneuous control.

  • Page 97: Setting The Comparator Mode (Optional)

    Setting the Comparator Mode (optional) Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE...

  • Page 98: Setting The Comparator Limit Values (Optional)

    Setting the Comparator Limit Values (optional) Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET...
  • Page 99 9.6 Setting the Comparator Limit Values (optional) • Setting the Comparator Limit Values in case of Harmonic Anaiysis Select the comparator function (Display C) SETUP OUTPUT SHIFT (Display C) ENTER ENTER Relay setting Set limit item Set limit value Set exponent (Display C) (Display A) (Display B)
  • Page 100 9.6 Setting the Comparator Limit Values (optional) Explanation Setting the Comparator Limit Values in case of Normal Measurement You can set the type of the limit and its value for each relay seperately. • Relay setting Selects the relay (ch1 to ch4) for which the limit item and its value will be set. •...
  • Page 101 9.6 Setting the Comparator Limit Values (optional) • Setting the harmonic order (corresponds to column B in the procedure) Setting range: 01 to 50 Initial value: see the following. The maximum order of harmonic analysis data varies by the fundamental frequency.

  • Page 102: Comparator Display (Optional)

    Comparator Display (optional) Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL SETUP...
  • Page 103 9.7 Comparator Display (optional) Explanation Comparator Display Function This function allows you to verify the set limits together with measurement/computation/ analysis data on the display when using the comparator function. The display is as follows, depending on whether the comparator function is set to single or dual mode. •...

  • Page 104: Turning The Comparator Function On/Off (Optional)

    Turning the Comparator Function ON/OFF (optional) Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET...

  • Page 105: Outputting To An External Plotter Or Printer

    Outputting to an External Plotter or Printer Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY...
  • Page 106 9.9 Outputting to an External Plotter or Printer • Activating the Output Activate the output Select data or setting (Display C) parameters SETUP (Display C) SHIFT OUTPUT ENTER ENTER Explanation Setting the Output (Printing) Mode This setting is to select whether you are printing out on a plotter or a printer. HPGL: For printing on an external, HPGL - compatible plotter.
  • Page 107 9.9 Outputting to an External Plotter or Printer • Executing Output After having connected the external plotter or printer to this instrument, execute the output of data. dATA: All data selected as output items will be output. PnL: All setting parameters will be output. Note •...
  • Page 108 9.9 Outputting to an External Plotter or Printer Example of Output to an External Plotter (Slight differences may exist due to used plotter, etc.) Output example in case of output item G-V of harmonic analysis data Voltage range Analysis Relative Harmonic Current range Order Value...
  • Page 109 9.9 Outputting to an External Plotter or Printer Output example of setting parameters Output example of harmonic analysis data WT200 Setup Lists Rev. : 3.01 Voltage range Model : M/253421/HRM Model : 253421-D/C2/EX2/HRM/CMP V Range : 15 V Current range A Range : 0.5A...

  • Page 110: Chapter 10 Using The Gp-Ib Interface (Optional)

    Chapter 10 Using the GP-IB Interface (Optional) 10.1 GP-IB Interface Functions and Specifications This instrument is equipped with a GP-IB interface in accordance with your preference. This interface permits remote control from a controller such as a personal computer, and output of various data.
  • Page 111 10.1 GP-IB Interface Functions and Specifications GP-IB Interface Specifications • Electrical & mechanical specifications: conforms to IEEE St’d 488-1978 • Functional specifications: see the table below • Code: ISO (ASCII) code • Address setting: Address can be set in the range from 0 to 30 using the front panel keys.

  • Page 112: Responses To Interface Messages

    10.2 Responses to Interface Messages Responses to Interface Messages IFC (Interface Clear) Unaddresses talker and listener. REN (Remote Enable) Transfers the instrument from local control to remote control. GTL (Go To Local) Transfers the instrument from remote control to local control. SDC (Selective Device Clear), DCL (Device Clear) Cleasrs GP-IB input/output buffer, and resets an error.

  • Page 113: Status Byte Format (Before The Ieee 488.2-1987 Standard)

    10.3 Status Byte Format (before the IEEE 488.2-1987 Standard) DIO 5 DIO 8 DIO 7 DIO 6 DIO 4 DIO 3 DIO 2 DIO 1 Integration ERROR STORE/ OVER Syntax Integration Computation BUSY RECALL ERROR BUSY Integration BUSY (DIO 8) This bit is set to “1”...

  • Page 114: Output Format

    10.4 Output Format Output Format of Normal Measured/Computed Data Data Format Measured data normally consists of a 6-byte header and 11 bytes of data Header Data Header Section The header section consists of 6 bytes (h1 to h6). h1 to h3: data type V_ _: voltage A_ _: Current W_ _: Active power...
  • Page 115 10.4 Output Format Data Section The data section consists of 11 bytes. d1: polarity; _ (space) or – (minus) d2 to d8: mantissa, floating-point number of the maximum six digits d9 to d11: exponent; E–3→m, E+0, E+3 → k, E+6 → M Data state in case of an overrange ( is being displayed) Data state in case of a computation overflow...
  • Page 116 10.4 Output Format Output Format when Self Selected Up to 14 normal measured/computed data can be output simultaneously, and the user is allowed to choose any output information type for those 14 data. Each output block is of the following format. Data (The data number will only be output in case of recall) Line 1...
  • Page 117 10.4 Output Format Default Output Format in case Integration Measurement Data Line 1 Terminator (The data number will only be output in case of recall) number Line 2 W1 data Terminator Line 3 Wh1data Terminator Line 4 Ah1data Terminator Elapsed Line 5 Frequency Terminator...
  • Page 118 10.4 Output Format Output Format of Harmonic Analysis Data Data Format Harmonic analysis data normally consists of a 8-byte header and 11 bytes of data Header Data Header Section The header section consists of 8 bytes (h1 to h8). h1 to h3: data type V__: voltage A__: Current W__: Active power...
  • Page 119 10.4 Output Format Output Format The output format depends on the selected output items which can be selected by the “OH” command. In case of voltage and current All computed values of Line 1 harmonic distortion Terminator the 1st to 50th order Analysis value for Line 2 Frequency...

  • Page 120: Setting The Address/Addressable Mode

    10.5 Setting the Address/Addressable Mode keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG indicators A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE...
  • Page 121 10.5 Setting the Address/Addressable Mode Explanation Mode Setting For details, see section 10.1. Address Setting A particular address is assigned to each device connected to the GP-IB interface so that each device can be recognized by every device. Therefore, an address must be assigned to this instrument when it is connected to a personal computer.

  • Page 122: Setting The Output Items

    10.6 Setting the Output Items keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE...
  • Page 123 10.6 Setting the Output Items Setting the Output Item in case of Harmonic Analysis ( Display C ) ( Display C ) Set output item SETUP ENTER ( Display C ) SHIFT OUTPUT ENTER ENTER Even if graph printing is specified as an output item, only the numerical values of the relevant function are output via communications.
  • Page 124 10.6 Setting the Output Items Explanation Setting the Output Item in case of Normal Measurement • Selecting the Default Setting Predefined items will be output by the communication function. The following types of default settings exist and they depend on the model. For details, see section 10.4.

  • Page 125: System Of Commands Before The Ieee 488.2-1987 Standard

    10.7 System of Commands before the IEEE 488.2-1987 Standard For a detailed description of each command, see section 13.1. Command Description Voltage range RV m (Range Voltage) sets voltage range AV m(Auto Voltage range) sets voltage auto range Current range RA m(Range current(A)) sets current range AA m(Auto current(A) range)
  • Page 126 10.7 System of Commands before the IEEE 488.2-1987 Standard Command Description Option /HRM HA m(Harmonics Analize) sets harmonic analysis ON/OFF HE m (Harmonics Element) sets the element for harmonic analysis OR(harmonics ORder) sets harmonics order OH m1,m2(Output Harmonics function) sets output item PS m(Pll Source ) sets PLL source DF m(Distortion Formula)

  • Page 127: Chapter 11 Using The Rs-232-C Interface (Optional)

    Chapter 11 Using the RS-232-C Interface (Optional) 11.1 RS-232-C Interface Functions and Specifications This instrument is equipped with a RS-232-C interface in accordance with your preference. This interface permits remote control from a controller such as a personal computer, and output of various data. Overview of the RS-232-C Interface The table below shows functions that are available in each mode.
  • Page 128 11.1 RS-232-C Interface Functions and Specifications RS-232-C Interface Specifications Electrical characteristics: conforms to EIA RS-232-C Connection: point-to-point Communications: full-duplex Synchronization: start-stop system Baud rate: 75, 150, 300, 600, 1200, 2400, 4800, 9600 Start bit: 1 bit Data length (word length): 7 or 8 bits Parity: Even, odd or no parity...

  • Page 129: Connecting The Interface Cable

    Signal Direction The figure below shows the direction of the signals used by the RS-232-C interface. CC(DSR) CD(DTR) data terminal ready] CA(RTS) request to send] Computer WT200 CB(CTS) clear to send ready] BA(TXD) transmitted data] BB(RXD) received data] 11-3 IM 253421-01E...
  • Page 130 11.2 Connecting the Interface Cable Table of RS-232-C Standard Signals and their JIS and CCITT Abbreviations Abbreviations Pin No. Name RS-232-C CCITT (25-pin connector) AA(GND) Protective ground AB(GND) Signal ground BA(TXD) Transmitted data BB(RXD) Received data CA(RTS) Request to send CB(CTS) Clear to send CC(DSR)
  • Page 131 Remove the wiring from FG ( 1 ), when erroneous operation occurs due to noise or other interference. The wiring of PC (ER) and WT200 (CS) are not necessary. However, we recommend that you wire so that the cable can be used in either direction.

  • Page 132: Setting The Mode, Handshaking Method, Data Format And Baud Rate

    11.3 Setting the Mode, Handshaking Method, Data Format and Baud Rate Relevant keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER keys and V RANGE A RANGE HOLD TIME MODE MAX HOLD TRIG indicator A OVER MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP...
  • Page 133 11.3 Setting the Mode, Handshaking Method, Data Format and Baud Rate Explanation Mode Setting For details, see section 11.1. Handshaking To use an RS-232-C interface to transfer data between this instrument and a computer, it is necessary to use certain procedures by mutual agreement to ensure the proper transfer of data.
  • Page 134 11.3 Setting the Mode, Handshaking Method, Data Format and Baud Rate Data Format The RS-232-C interface of this instrument performs communications using start-stop synchronization. In start-stop synchronization, one character is transmitted at a time. Each character consists of a start bit, data bits, a parity bit, and a stop bit. See the figure below.

  • Page 135: Format And Commands Of Output Data (Before The Ieee 488.2-1987 Standard)

    11.4 Format and Commands of Output Data (before the IEEE 488.2-1987 Standard) Output Format The format of output data is the same as for the GP-IB interface. For details, see section 10.4. Commands The commands used for the RS-232-C interface are identical to those used for the GP-IB interface, except for the following commands.

  • Page 136: Chapter 12 Initializing Setup Parameters And Performing Zero Level Compensation

    Chapter 12 Initializing Setup Parameters and Performing Zero Level Compensation 12.1 Back-up of Setting Parameters In order to protect setting parameters in case of a power failure and such, this instrument is equipped with a lithium battery which protects these parameters. The following setting parameters are being kept.

  • Page 137: Initializing Setting Parameters

    12.2 Initializing Setting Parameters Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE LOCAL...
  • Page 138 External sensor scaling constant 50.00A Averaging Averaging type: exponential, attenuation constant: 8 Averaging ON/OFF: OFF MATH computing equation WT200: Voltage crest factor Frequency Integration Reset condition, integration mode: manual, integration type: standard Integration preset time: 0 hr, 0 min, 0 s...

  • Page 139: Performing Zero Level Compensation

    12.3 Performing Zero Level Compensation Keys Displays SAMPLE relevant AUTO AUTO FUNCTION V OVER V RANGE A RANGE HOLD keys and TIME MODE MAX HOLD TRIG A OVER indicator MODE FUNCTION ENTER V MEAN INTEGRATOR START STOP RESET FUNCTION HARMONICS MEMORY INTEG SET REMOTE...

  • Page 140: Commands

    • Averaging cannot be set to ON while • The output format of the WT200 is the same integration is in progress; Error 13 will occur. for m=0 or 1. • While recalling or storing is in progress, execution error 19 will occur.
  • Page 141 13.1 Commands DA/DA? Sets the function for display A or DC/DC? Sets the function for display C/inquires queries the current setting. about the current setting Syntax DA m<terminator> Syntax DC m<terminator> “m” indicates one of the following “m” indicates one of the following functions.
  • Page 142 13.1 Commands EC/EC? Sets the element for display C or Description Parameter error 12 will occur if “m” is set to an queries the current setting. illegal value. Syntax EC m<terminator> DR/DR? Displays the current range. “m” indicates element. Syntax DR m<terminator>...
  • Page 143 13.1 Commands HA/HA? Determines whether or not to turn ON Query IG?<terminator> the harmonic analysis function or Example queries the current setting. Description • Parameter error 12 will occur if “m” is set to an Syntax HA m<terminator> illegal value. •...
  • Page 144 13.1 Commands Query KH?<terminator> Query MN?<terminator> Example Example Description • Parameter error 12 will occur if “m” is set to an Description • Parameter error 12 will occur if “m” is set to an illegal value. illegal value. • Changing of the measurement mode is not •...
  • Page 145 13.1 Commands Query OA1?<terminator> No data to be stored in internal Example OA1,3,2 memory. Description • Parameter error 12 will occur if any of “m1”, Attempted to start integration “m2” and “m3” is set to an illegal value. when integration had been stopped •...
  • Page 146 13.1 Commands Query OF1?<terminator> (GAD) outputs the phase angle Example OF1,3,2 between the 2nd to 50 (or 30) th Description • Parameter error 12 will occur if “m1”, “m2” or order current and the “m3” is set to an illegal value. fundamental (1st order) as numerical value and graph OFD/OFD?
  • Page 147 13.1 Commands “m2” indicates element Line 11: Storing/recalling setting m2= 1: Element 1 Query OH?<terminator> SO0;SR0,0,0;RO0;RR0,0,0<terminator> Example OH13,1 Line 12: Command group used Description Parameter error 12 will occur if “m1” or “m2” is CM0<terminator> set to an illegal value. Line 13: Measurement synchronization source, integration type, MAX OR/OR?
  • Page 148 13.1 Commands Query OY1?<terminator> Query PS?<terminator> Example OY1,1,1,600.0,1 Example Description Parameter error 12 will occur if “m” is set to an Description • Parameter error 12 will occur if any illegal illegal value. value is set. • While recalling or storing is in progress, OYH/OYH? Sets the relay output items during harmonic analysis or queries the current execution error 19 will occur.
  • Page 149 13.1 Commands Query RV?<terminator> RO/RO? Sets the recall function ON/OFF or Example inquires about the current setting. Description • Parameter error 12 will occur if an illegal value Syntax RO m<terminator> is set. “m” indicates recall ON or OFF. • Changing of the voltage range is not allowed recall OFF while integration is in progress;...
  • Page 150 13.1 Commands SN/SN? Sets the measurement synchronization TM/TM? Sets integration preset time or queries source or queries the current setting. the current setting. Syntax SN m<terminator> Syntax TM m1,m2,m3<terminator> “m” indicates the type of measurement “m1” indicates hour, and must be set within the following range.
  • Page 151 13.1 Commands Description Parameter error 12 will occur if “m” is set to an illegal value. YO/YO? Sets the comparator function ON/OFF or inquires about the current setting. Syntax YO m<terminator> “m” indicates whether the comparator function is ON/OFF Query YO?<terminator>...

  • Page 152: Sample Program

    13.2 Sample Program Before Programming This section describes sample programs for a IBM PC/AT and compatible system with National Instruments GPIB-PCIIA board installed. Sample programs in this manual are written in Quick BASIC version 4.0/4.5 Programming Format The programming format for this instrument is as follows. Command + Parameter + Terminator The used codes are ASCII codes.
  • Page 153 13.2 Sample Program Sample Program '****************************************************************************** WT200 DIGITAL POWER METER Used to set measurement condition/ranges for normal mesurement mode, and read and display the following data each time measured/computed data is updated. '****************************************************************************** REM $INCLUDE: 'qbdecl.bas' DECLARE SUB gpiberr (msg$) PRINT ""...
  • Page 154 13.2 Sample Program IF (ibsta% AND EERR) THEN CALL gpiberr("Ibrd error") ELSE RD$ = LEFT$(RD$, ibcnt% - 2) PRINT RD$ IF (RD$ <> "END") GOTO RDDAT END IF NEXT I 'STOP 'END '******************************************************* read measurement data used service request '******************************************************* PRINT ""...
  • Page 155 13.2 Sample Program '*************************************************************** '* WT200 range adjust program '* [SHIFT] + power on '*************************************************************** REM $INCLUDE: 'qbdecl.bas' DECLARE SUB gpiberr (msg$) PRINT "" CALL IBDEV(0, 1, 0, T10s, 1, 0, DEV%) IF (DEV% <= 0) THEN CALL gpiberr("Ibdev error")
  • Page 156 13.2 Sample Program ENDODDISP: RETURN ' display measured data for adjust sensor range ODDISPEX: PRINT "S: refresh and save adjusted data" PRINT "C: cancel (not save)" WRTDATAEX: WRT$ = "OD" CALL IBWRT(DEV%, WRT$) IF (ibsta% AND EERR) THEN CALL gpiberr("Ibwrt error") LOCATE 15, 1 RDDATAEX: RD$ = SPACE$(255)
  • Page 157 13.2 Sample Program GOTO DISPDATA ELSEIF C$ = "3" THEN WRT$ = "CR2" CALL IBWRT(DEV%, WRT$) IF (ibsta% AND EERR) THEN CALL gpiberr("Ibwrt error") GOTO DISPDATA ELSEIF C$ = "4" THEN WRT$ = "CR3" CALL IBWRT(DEV%, WRT$) IF (ibsta% AND EERR) THEN CALL gpiberr("Ibwrt error") GOTO DISPDATA ELSEIF C$ = "5"...
  • Page 158 13.2 Sample Program '*************************************************************** '* WT200 DA output adjust program '* [SHIFT] + power on '*************************************************************** REM $INCLUDE: 'qbdecl.bas' DECLARE SUB gpiberr (MSG$) PRINT "" CALL IBDEV(0, 1, 0, T10s, 1, 0, DEV%) IF (DEV% <= 0) THEN CALL gpiberr("Ibdev error")
  • Page 159 13.2 Sample Program ' +5V output on selected channel WRT$ = "CH" + CH$ CALL IBWRT(DEV%, WRT$) IF (IBSTA% AND EERR) THEN CALL gpiberr("Ibwrt error") WRT$ = "DO0" CALL IBWRT(DEV%, WRT$) IF (IBSTA% AND EERR) THEN CALL gpiberr("Ibwrt error") PRINT "" PRINT "+5V output on channel";...

  • Page 160: For Users Using Communication Commands Of Digital Power Meter 2533E

    For addressable mode setting method, see pages 10-1 and 10-11. • WT200 code format is used for error code and status byte. For details, see to page 10-4 and 15-12. The WT200 code format differs from 2533E code format. •...
  • Page 161 B must be set. Output items do no match those displayed on each display as in the WT200, but match those set for ch.1 to ch.3 in output function setting for the WT200. Select output items according to the 2533E communication programs.
  • Page 162 13.3 For Users Using Communication Commands of Digital Power Meter 2533E • Output Section d1: Polarity: _ (space) or – (minus) d2 to d9: Mantissa, floating decimal of max. 7 digits d10 to d12: Exponent ⇒ m E+3 ⇒ k E+6 ⇒...

  • Page 163: Overview Of Ieee 488.2-1987

    Chapter 14 Communication Commands 2 (System of Commands Complying to the IEEE 488.2-1987 Standard) 14.1 Overview of IEEE 488.2-1987 The GP-IB interface provided with this instrument Buffer size which affects transmission of conforms to IEEE 488.2-1987. This standard requires block data the following 23 points be stated in this document.
  • Page 164 14.1 Overview of IEEE 488.2-1987 (21) Structure of extended return status See section 14.4. (22) To find out whether each command is performed in parallel or sequentially See section 14.2.6, “Synchronization with the Controller” and section 14.3. (23) Functions performed until a message indicating completion of the command is displayed See the function description of each command in...

  • Page 165: Program Format

    14.2 Program Format 14.2.1 Symbols Used in Syntax 14.2.2 Messages Descriptions Blocks of message data are transferred between the Symbols which are used in the syntax descriptions in controller and this instrument during communications. section 14.3 are shown below. These symbols are Messages sent from the controller to this instrument referred to as BNF notation (Backus-Naur Form).
  • Page 166 14.2 Program Format Program message unit format <Response header> The format of a program message unit is shown below. A response header sometimes precedes the response data. Response data must be separated from the header by a space. For details, see page 14-7. <Program header>...

  • Page 167: Commands

    14.2 Program Format 14.2.3 Commands Dead Lock This instrument has a buffer memory in which both There are two types of command (program header) program and response messages of 1024 bytes or which can be sent from the controller to this instrument. more can be stored.
  • Page 168 14.2 Program Format When Consecutive Commands are in Different Header Interpretation Rules Groups This instrument interprets the header received A colon ( ) must be included before the header of a according to the following rules. command, if the command does not belong to the •...

  • Page 169: Responses

    14.2 Program Format 14.2.4 Responses 14.2.5 Data On receiving a query from the controller, this A data section comes after the header. A space must be instrument returns a response message to the included between the header and the data. The data controller.
  • Page 170 14.2 Program Format <Multiplier> <Character Data> Multipliers which can be used are shown below. <Character data> is a specified string of character data (a mnemonic). It is mainly used to indicate options, and Symbol Word Description is chosen from the character strings given in { }. For Peta interpretation rules, see “Header Interpretation Rules”...

  • Page 171: Synchronization With The Controller

    14.2 Program Format 14.2.6 Synchronization with the “ STATus:EESE 1 ” is a command used only to reflect Controller the status of bit 0 of the extended event register in the status byte. There are two kinds of command; overlap commands “...

  • Page 172: Commands

    14.3 Commands 14.3.1 Command List Command Description Page AOUTput Group :AOUTput? Queries all settings related to D/A output. 14-14 Sets/queries the D/A output item. 14-14 :AOUTput:CHANnel<x> Sets/queries the preset integration time for D/A output of integrated values. 14-14 :AOUTput:IRTime :AOUTput:PRESet Sets the default value as D/A output items.
  • Page 173 14.3 Commands Command Description Page HARMonics Group :HARMonics? Queries all settings related to harmonic analysis. 14-22 :HARMonics:DISPlay? Queries all settings related to the display in case of harmonic analysis. 14-22 :HARMonics:DISPlay:ORDer Sets/queries the order of the harmonic component to be shown on display B.
  • Page 174 14.3 Commands Command Description Page RECall Group Queries all settings related to recalling data. 14-32 :RECall? Sets/queries the recalling interval. 14-32 :RECall:INTerval :RECall:PANel Retrieves the setting parameters file. 14-32 :RECall[:STATe] Sets/queries recalling ON/OFF. 14-32 RELay Group Queries all settings related to the comparator function. 14-33 :RELay? :RELay:DISPLay...

  • Page 175: Standard

    14.3 Commands Command Description Page Common Command Group *CAL? Performs zero level compensation and queries the result. 14-38 *CLS Clears the standard event register, extended event register and error queue. 14-38 *ESE Sets/queries the value of the standard event enable register. 14-38 Sets/queries the value of the standard event register and clears it.

  • Page 176: Aoutput Group

    14.3 Commands 14.3.2 AOUTput Group The commands in the AOUTput group are used to make settings relating to, and inquires about D/A output. This allows you to make the same settings and inquiries as can be set using the lower menus of [OUTPUT]-“dA” or [INTEG SET]-“dAtimE”.

  • Page 177: Communicate Group

    14.3 Commands 14.3.3 COMMunicate Group The commands in the COMMunicate group are used to make settings relating to, and inquires about communications. There is no front panel key for this function. :COMMunicate HEADer <Space> <NRf> VERBose <Space> <NRf> WAIT <Space> <Register>...
  • Page 178 14.3 Commands COMMunicate:VERBose Function Determines whether a response to a query is to be returned in full form (for example:CONFIGURE: VOLTAGE:RANGE 150.0E+00), or in abbreviated form (for example: VOLT:RANG 150.0E+00), or queries the current setting. Syntax COMMunicate:VERBose {<Boolean>} COMMunicate:VERBose? Example COMMUNICATE:VERBOSE ON COMMUNICATE:VERBOSE? →:COMMUNICATE:VERBOSE 1...

  • Page 179: Configure Group

    14.3 Commands 14.3.4 CONFigure Group The CONFigure group relates to the measurement settings. The same function can be performed using the WIRING key, V RANGE key, A RANGE key, MODE (SHIFT + V RANGE) key and SETUP key (except for “PnLrSt”) on the front panel.
  • Page 180 14.3 Commands SYNChronize <Space> VOLTage CURRent AVERaging STAT e <Space> <NRf> TYPE <Space> LINear <NRf> EXPonent CONFigure? [CONFigure]:CURRent? Function Queries all the settings related to the Function Queries all setting values relating to the current measurement conditions. range (external sensor range) Syntax CONFigure? Syntax...
  • Page 181 14.3 Commands [CONFigure]:CURRent:RANGe [CONFigure]:SCALing:{PT|CT|SFACtor}? Function Sets the current range (external sensor input Function Queries all scaling constants related to range), queries the current setting. {voltage|current|power}. Syntax [CONFigure]:CURRent:RANGe Syntax [CONFigure]:SCALing:{PT|CT|SFACtor}? {<current>|(EXTernal,<voltage>)} Example [CONFIGURE]:SCALING:PT?→:CONFIGURE: [CONFigure]:CURRent:RANGe? SCALING:PT:ELEMENT1 1.000E+00 <current>=5mA to 20A (5m, 10m, 20m, 50m, 100m, 200m, 0.5, 1, 2, 5, 10, 20A) [CONFigure]:SCALing:{PT|CT|SFACtor}:ELEMent<x>...
  • Page 182 14.3 Commands [CONFigure]:VOLTage:RANGe Function Sets the voltage range/queries the current setting. Syntax [CONFigure]:VOLTage:RANGe {<voltage>} [CONFigure]:VOLTage:RANGe? <voltage>=15V to 600V (15, 30, 60, 150, 300, 600V) Example [CONFIGURE]:VOLTAGE:RANGE 600V [CONFIGURE]:VOLTAGE:RANGE?Æ:CONFIGURE: VOLTAGE:RANGE 600.0E+00 [CONFigure]:WIRing Function Sets the wiring method/queries the current setting. Syntax [CONFigure]:WIRing {P1W2} [CONFigure]:WIRing? Example...

  • Page 183: Display Group

    14.3 Commands 14.3.5 DISPlay Group The commands in the DISPlay group are used to make settings relating to, and inquiries about display. This allows you to make the same settings and queries as when using the FUNCTION key or ELEMENT key on the front panel. :DISPlay <x>...

  • Page 184: Harmonics Group

    14.3 Commands 14.3.6 HARMonics Group The commands in the HARMonics group relate to the harmonic analysis function. This allow you to make the same settings and inquiries as when using the HARMONICS key on the front panel and the corresponding menus. This group is only useful in case your instrument is equipped with the /HRM option.

  • Page 185: Integrate Group

    14.3 Commands HARMonics:THD Function Sets the computation method for harmonic distortion (THD) for harmonic analysis/queries the current setting. Syntax HARMonics:THD {IEC|CSA} HARMonics:THD? Example HARMONICS:THD IEC HARMONICS:THD?→:HARMONICS:THD IEC 14.3.7 INTEGrate Group The commands in the INTEGrate group are used to make settings relating to, and inquiries about integration. This allows you to make the same settings and inquiries as when using the START key, STOP key, RESET key, INTEG SET key and their corresponding menus.

  • Page 186: Math

    14.3 Commands 14.3.8 MATH The commands in the MATH group are used to make settings relating to, and to make inquiries about the computing function. The same function can be performed using the “MATH” menu of the [SETUP] key of the front panel. :MATH TYPE <Space>...

  • Page 187: Measure Group

    14.3 Commands 14.3.9 MEASure Group The MEASure group relates to measurement/computation data. There are no front panel keys for these functions. Also, your instrument must be equipped with the /HRM (harmonic analysis function) to be able to use the related commands.
  • Page 188 14.3 Commands HARMonics VALue PRESet <Space> VPATtern ITEM APATtern WPATtern DPATtern CLEar SYNChroniz e <Space> <NRf> <Harmonic analysis function> MEASure? MEASure:HARMonics:ITEM? Function Queries all the settings related to Function Queries all settings related to the measurement/computation data. communication output items of harmonic Syntax MEASure? analysis data.
  • Page 189 14.3 Commands MEASure:HARMonics:ITEM:{SYNChronize| MEASure[:NORMal]:ITEM? Function Queries all settings related to the <harmonic analysis function>} communication output items of normal Function Sets the communication output item of measured/computed data. harmonic analysis ON/OFF, queries the current setting. Syntax MEASure[:NORMal]:ITEM? Syntax MEASure:HARMonics:ITEM:{SYNChronize| Example MEASURE:NORMAL:ITEM?→...
  • Page 190 14.3 Commands MEASure[:NORMal]:ITEM:<normal measurement function>:ELEMent<x> Function Sets the communication output concerning each element ON/OFF, queries the current setting. Syntax MEASure[:NORMal]:ITEM:<normal measurement function>:ELEMent<x> {<Boolean>} MEASure[:NORMal]:ITEM:<normal measurement function>:ELEMent<x>? <x>=1 Example MEASURE:NORMAL:ITEM:V:ELEMENT1 ON MEASURE:NORMAL:ITEM:V:ELEMENT?→ :MEASURE:NORMAL:ITEM:V:ELEMENT1 1 MEASure[:NORMal]:VALue? Function Queries normal measured/computed data set by commands other than “...
  • Page 191 <NR1> format as well. Data will be output in the following order corresponding to each element. However, only element 1 will be valid for WT200 (model: 253421). Data number in case of recalling)
  • Page 192 14.3 Commands Output example of normal measured/computed data • Output example for WT200 (model: 253421) after having sent the following commands. (Sent) MEASURE:NORMAL:ITEM:PRESET NORMAL MEASURE:NORMAL:VALUE? (Received data) 10.04E+00,49.41E+00,429.0E+00 (Data contents) V1:10.04E+00 A1:49.41E+00 W1:429.0E+00 • Output example for WT200 (model: 253421) where measurement data first have been stored during integration, and while recalling these data, the following commands have been sent.
  • Page 193 Each data is divided by a comma “,” and ended by the terminator <RMT>. Output Example of Harmonic Analysis Data • Output example for WT200 (model: 253421), after having sent the following commands. (Refer also to page 9-19 for output example of external plotter).

  • Page 194: Recall Group

    14.3 Commands 14.3.10 RECall Group The commands in the RECall group are used to make settings relating to, and inquires about recalling data. This allows you to make the same settings and inquiries as can be set using the lower menus of [MEMORY]-“rECAL” or [MEMORY]-“PnLrC”.

  • Page 195: Relay Group

    14.3 Commands 14.3.11 RELay Group The commands in the RELay group are used to make settings relating to, and inquiries about the comparator function. This allows you to make the same settings and inquiries as when using the lower menus of [OUTPUT]- “rELAY”.
  • Page 196 14.3 Commands RELay:HCHannel<x>:FUNCtion RELay:NCHannel<x>? Function Sets the function of the relay output item in Function Queries all settings related to the relay output case of harmonic analysis/queries the current items in case of normal measurement. setting. Syntax RELay:NCHannel<x>? Syntax RELay:HCHannel<x>:FUNCtion {<harmonic <x>=1 to 4 analysis function>,(<NRf>|ELEMent<1>), Example...

  • Page 197: Sample Group

    14.3 Commands 14.3.12 SAMPle Group The commands in the SAMPle group are used to make settings relating to, and inquiries about sampling. You can make the same settings as when using the [HOLD] key on fhe front panel. :SAMPle HOLD <Space>...

  • Page 198: Status Group

    14.3 Commands 14.3.13 STATus Group The commands in the STATus group are used to make settings relating to, and inquiries about the communication status. There is no corresponding operation using the front panel. See sectiono 14.4 for status reports. :STATus CONDition EESE <Space>...

  • Page 199: Store Group

    14.3 Commands STATus:FILTer<x> STATus:QMESsage Function Sets the transit filter/queries the current setting. Function Sets whether or not to apply the corresponding message to the query “STATus:ERRor?” / Syntax STATus:FILTer<x> {RISE|FALL|BOTH|NEVer} STATus:FILTer<x>? queries the current setting. <x>=1 to 16 Syntax STATus:QMESsage {<Boolean>} Example STATUS:FILTER2 RISE STATus:QMESsage?

  • Page 200: Common Command Group

    14.3 Commands 14.3.15 Common Command Group The commands in the common command group are independent of the instrument’s functions, and are specified in IEEE 488.2-1987. There is no front panel key that corresponds to this group. *CAL *CLS *ESE <Space> <NRf>...
  • Page 201 Queries the instrument model. Example *RST Syntax *IDN? Description See section 12.2, “Initializing Setting Example *IDN?→YOKOGAWA,253421,0,F3.11 Parameters” for initial settings. Description A reply consists of the following information: <Model>,<Type>,<Serial No.> and <Firmware *SRE version> Function Sets the value of the service request enable register, or queries the current setting.
  • Page 202 14.3 Commands *STB? Function Queries the value of the status byte register. Syntax *STB? Example *STB?→4 Description • Each bit is expressed as a decimal number. • Bit 6 is RQS and not MSS because the register is read without serial polling. •...

  • Page 203: Status Report

    14.4 Status Report 14.4.1 Overview of the Status Report Status Report The figure below shows the status report which is read by a serial poll. This is an extended version of the one specified in IEEE 488.2-1987. Service request enable register &...

  • Page 204: Status Byte

    14.4 Status Report 14.4.2 Status Byte Overview of Registers and Queues Name Function Writing Reading Overview of Status Byte Status byte — Serial poll (RQS), *STB? (MSS) 6 ESB MAV EES EAV 1 Service request Masks status byte. *SRE *SRE? enable register Standard event Event in the —...

  • Page 205: Standard Event Register

    14.4 Status Report 14.4.3 Standard Event Register Operation of the Status Byte A service request is issued when bit 6 of the status Overview of the Standard Event Register byte becomes “ ”. Bit 6 becomes “ ” when any of the other bits becomes “...

  • Page 206: Extended Event Register

    14.4 Status Report Operation of the Standard Event Register Reading from the Standard Event Register The standard event register is provided for eight The contents of the standard event register can be different kinds of event which can occur inside the read by the command.

  • Page 207: Output Queue And Error Queue

    14.4 Status Report Manual integration mode Standard integration mode Continuous integration mode Integration Integration Integration Integration Timer preset time Timer preset Timer preset Timer Reset time time preset time Start Stop Reset Start Stop Reset Start Stop When the elapsed integration time reaches the preset integration time, data will be reset automatically and the contact status will change.

  • Page 208: Sample Program

    National Instruments AT-GPIB/TNTIEEE-488.2 board. Sample programs in this manual are written in Quick BASIC version 4.0/4.5. '************************************************************************* sample program 1 for the WT200 '************************************************************************* Used to set measurement condition/ranges for normal mesurement mode, * and read and display the following data each time measured/computed data is updated.
  • Page 209 14.5 Sample Program ' read/display measured data PRINT "" FOR I = 1 TO 10 'clear extended event register WRT$ = "STATUS:EESR?" CALL IBWRT(DEV%, WRT$) IF (ibsta% AND EERR) THEN CALL gpiberr("Ibwrt error") RD$ = SPACE$(512) CALL IBRD(DEV%, RD$) IF (ibsta% AND EERR) THEN CALL gpiberr("Ibrd error") 'wait for completion of refreshing data WRT$ = "COMMUNICATE:WAIT 1"...
  • Page 210 14.5 Sample Program '*************************************************************************** sample program 2 for the WT200 '*************************************************************************** used to read and display the following data in harmonic analysis mode. * PLL source (voltage) frequency harmonic distortion of current total rms value of each harmonic from 1st to 50th of current...
  • Page 211 14.5 Sample Program 'display analyzed data PRINT "V1 FREQ", D$(0) PRINT "A1 THD(IEC)", D$(1) PRINT "A1 RMS", D$(2) FOR J = 1 TO 50 STEP 2 PRINT "A1 Order" + STR$(J), D$(J + 2), PRINT "A1 Order" + STR$(J + 1), D$(J + 3) NEXT J PRINT ""...

  • Page 212: Ascii Character Codes

    14.6 ASCII Character Codes ASCII chracter codes are given below. ‘ ” & ’ < > (RUBOUT) Address Universal Listener Talker Secondary Command Command Address Address Command Example Octal GP-IB code ASCII character code Hexadecimal Decimal 14-50 IM 253421-01E...

  • Page 213: Communication-Related Error Messages

    14.7 Communication-related Error Messages Error messages related to communications are given below. When servicing is required, contact your nearest YOKOGAWA representative, as given on the back cover of this manual. Only error messages relating to the communication mode 488.2 are given here. For other error messages, see chapter 13 and section 15.4, “Error Codes and Corrective...
  • Page 214 14.7 Communication-related Error Messages Errors in communications execution (200 to 299) Code Message Action Reference Section Setting conflict Check the relevant setting. Section 14.3 Data out of range Check the setting range. Section 14.3 Too much data Check the data byte length. Section 14.3 Illegal parameter value Check the setting range.

  • Page 215: Chapter 15 Maintenance And Troubleshooting

    Required Equipments AC Voltage/Current Standard (0.02%, 30 to 300 V, 1 to 10 A/60 Hz) recommended: Yokogawa 9100 or 2558 (if you want to carry out adjustments with an accuracy higher than the one 2558 is providing, fine adjust the output using the Digital Multi Meter (DMM) 1271) DMM (0.05%)
  • Page 216 15.1 Adjustments Connect the voltage output of the AC voltage/current standard to the voltage input terminal of this instrument. Connect the H terminal of the standard to the V terminal of this instrument, and connect the L terminal of the standard to the ± terminal of this instrument.
  • Page 217 15.1 Adjustments Adjusting the D/A Output • Preparations Connect the pin No. of the output connector corresponding to the channel to be adjusted to the H terminal of the DMM, and connect pin No. 12 and 24 of the output connector to the L terminal. Set the range of the DMM to 20 V.
  • Page 218 15.1 Adjustments Communication Commands to Carry Out Adjustments Command Description CAL1 Enters the range adjustment mode. CAL2 Enters the external input range adjustment mode. CAL3 Enters the D/A output adjustment mode. CAL0 Finishes adjustment (and returns to normal measurement mode). Switches to 30 V range in range adjustment mode.

  • Page 219: Calibration

    Yokogawa 2558, 2558-S7 or 9100 (up to 400 Hz) or Fluke 5200A + 5215A or 5200A + 5220A Digital Power Meter recommended: Yokogawa WT2000 or 2531 2ch Synchronizer recommended: Yokogawa FG120 Calibration of DC Voltage, Current and Power Wiring Connect the DC voltage and DC current standard as follows.

  • Page 220: Specifications

    15.2 Calibration Calibration Regarding the combination of voltage and current ranges, we recommend applying the following. • Test the current ranges with the voltage range set to 150 V; • Test the voltage ranges with the current range set to 5 A. Of course testing can be carried out using other combinations as well.
  • Page 221 15.2 Calibration Calibration of AC Voltage, Current and Power Wiring Connect the Digital Power meter, Synchronizer and the AC voltage and AC current standard as follows. • Direct input EUT:Equipment under test AC voltage ± standard ± Synchronizer ± Digital power meter ±...
  • Page 222 15.2 Calibration Preparation Set the frequency of the AC voltage standard and of each channel of the synchronizer to 60 Hz. Then, while not exceeding the maximum values of the external synchronization inputs of the voltage and current standard, rise the output level of the synchronizer until the standards are synchronized.
  • Page 223 15.2 Calibration Calibration of D/A Output Preparation Connect the AC voltage standard to the voltage terminal of this instrument. The wiring method is the same as when adjustments are carried out (see page 15-3). Set the D/A output of this instrument to V1 for each channel. Calibrating Connect the DMM to ch1 of the output terminal in the same way as when carrying out adjustments.
  • Page 224 15.2 Calibration Calibration of the Harmonic Analysis Function Connection Use the same instruments as those used for AC power measurement. The wiring diagrams are the same as those given in “Calibration of AC Voltage, Current, and Power” (see pages 15-7 and 15-8). Preparation Set the voltage range of this instrument to 15 V, and the current range to 1 A.

  • Page 225: In Case Of Malfunctioning

    15.3 In Case of Malfunctioning Check These Items First If the instrument does not operate properly even if the actions given in the table below are performed, contact your nearest sales representative. Addresses may be found on the back cover of this manual. When contacting your representative, inform the ROM version No.

  • Page 226: Error Codes And Corrective Actions

    15.4 Error Codes and Corrective Actions Error Codes for Operation and Measurement Error Code Description Corrective Action Reference page Received a command not used by this instrument. Check for error in the command sent. 10-7 Parameter value specified is outside the allowed Correct the value.
  • Page 227 15.4 Error Codes and Corrective Actions Error Codes regarding Self Diagnosis Error Code Description Corrective Action Data failure of setting parameters backup. – (setting parameters are set to default) EEPROM (element 1) failure. Service is required. EEPROM (element 2) failure. Service is required.

  • Page 228: Replacing The Fuse

    If you believe the fuse inside the case is blown, contact your nearest YOKOGAWA dealer as listed on the back cover of this manual. The ratings of the fuse that is used inside the case are shown below.

  • Page 229: Recommended Replacement Parts

    (items which wear out). The replacement period for expendable items varies depending on the conditions of use. Refer to the table below as a general guideline. Contact your nearest YOKOGAWA dealer for replacement parts. Parts Name Specifications and Recommended Replacement Period Current input relay This is the relay used to switch the current input circuit.

  • Page 230: Chapter 16 Specifications

    Chapter 16 Specifications 16.1 Input Voltage Item Specification Input circuit type Floating input Resistive voltage divider Rated inputs (range rms) 600, 300, 150, 60, 30, 15 V Input impedance Input resistance approx.2 MΩ, Input capacitance approx.13 pF Instantaneous maximum The peak is 2.8 kV or the RMS value is 2.0 kV, whichever is less. allowable input for 20 ms, 1 cycle Instantaneous maximum...
  • Page 231 16.1 Input Current Item Specification Input circuit type Floating input Shunt input Rated inputs (range rms) Direct input: 20 A, 10 A, 5 A, 2 A, 1 A, 0.5 A, 200 mA, 100 mA, 50 mA, 20 mA, 10 mA, 5 mA External sensor input (optional): (10 V, 5 V, 2.5 V), or (200 mV, 100 mV, 50 mV) Direct input: Approx.

  • Page 232: Measurement Functions

    0 VDC Filter: ON at 200 Hz or less Scaling: OFF This accuracy are guaranteed by YOKOGAWA calibration system. Note: The unit f in accuracy expressions is kHz. Effective input range With the input range at 10% to 110%, the above specified accuracy is valid. With the input range at 110% to 130%, the above specified reading accuracy increased 0.5 times is added to the accuracy.
  • Page 233 Common mode voltage: 0 VDC Filter: ON at 200 Hz or less Scaling: OFF This accuracy are guaranteed by YOKOGAWA calibration system. Note: The unit f in accuracy expressions is kHz. Effect of power factor cosϕ = 0 45 Hz ≤ f ≤ 66 Hz:add ±0.25% of range Reference data (up to 50 kHz): add ±{(0.23 + 0.4 ×...

  • Page 234: Frequency Measurement

    16.3 Frequency Measurement Item Specification Input V, A Operating principle Reciprocal counting method Frequency ranges 10 Hz to 50 kHz (100 Hz, 1 kHz, 10 kHz, 100 kHz, Auto range) ±(0.1% of rdg + 1 digit) Accuracy Minimum input is more than 30% of rated range. When an input frequency is less than 200Hz, FILTER must be ON to obtain the specification accuracy.

  • Page 235: Display Functions

    16.6 Display Functions Item Specification Display type 7-segment LED Number of displays DISPLAY Displayed Value Maximum Reading V, A, W, VA, var, elapsed integration time V, A, W: 99999 V, A, W, PF, deg, % (contents ratio in %, THD) Wh, Ah: 999999 V, A, W, V•AHz, ±Wh, ±Ah V, AHz: 99999...

  • Page 236: Internal Memory Function

    16.8 Internal Memory Function Item Specification Measurement data Number of data that can be stored: 600 blocks Writing intervals: 250 ms and 1 s to 99 h: 59 min: 59 s Reading intervals: 250 ms and 1 s to 99 h: 59 min: 59 s (both intervals can be set on a second basis) Panel setup information Four-pattern information can be written/read.

  • Page 237: External Contorol And Input Signals (In Combination With The D/A Converter And Comparator Options)

    16.12 External Contorol and Input Signals (in combination with the D/A converter and comparator options) Item Specification External Control and Input/Output signals EXT-HOLD, EXT-TRIG, EXT-START, EXT-STOP, EXT-RESET, INTEG-BUSY (However, the /DA4 option must be installed. Only EXT-HOLD and EXT-TRIG are available if the / CMP option is installed.) Input level TTL negative pulse...

  • Page 238: General Specifications

    Complying Standard: EN61010 Overvoltage Category II Pollution degree 2 Equipment that is connected to the WT200 through the GP-IB, RS-232-C, or Ext. I/O connector must comply with applicable safety standards (IEC60950 or IEC61010-1, for example) or some equivalent standard. 16-9...

  • Page 239: External Dimensions

    16.15 External Dimensions Unit: mm Rear ±1 JIS rack mount ±1 Protruding from rack ±1 ±1 Protruding from rack ±1 EIA rack mount ±1 Protruding from rack ±1 ±1 Protruding from rack Unless other wise spcified, tolerance is ±3% (However, tolerance is ±0.3 mm when below 10 mm) 16-10 IM 253421-01E...

  • Page 240: Index

    Index Index Symbols comparator display ............9-16 compound header ............. 14-5 24-pin connector ..............iii computation ................ 1-2 2533E commands ............13-21 computing accuracy ............16-5 2533E setting command ........... 13-1 computing equations ............16-5 488.2 mode ............. 10-1, 11-1 condition register .............
  • Page 241 Index filter ..................4-4 limit item ................9-13 fixed range ................4-6 limit value ................9-13 format (of one character) ..........11-8 listener ................10-1 four arithmetic operations ......... 4-16, 5-7 frequency ................5-6 frequency measurement ............. 1-3 front panel ................2-1 malfunction, check items during ........
  • Page 242 Index peak measurement ............. 1-2 safety standard ..............16-9 peak over display ..............2-3 sample program ..........13-13, 14-46 peak value ................5-7 scaling ............... 4-9, 4-11 phase angle ................ 5-4 sensor input ..............4-11 phase lock ................7-4 setting parameters, backup ..........1-4 photo-isolator ..............

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