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Chapter 2 Measurement Preparations

38

2.7 Turning the Power On/Off

Before turning the instrument on, make sure
the supply voltage matches that indicated on
the its power connector. Connection to an
improper supply voltage may damage the
instrument and present an electrical hazard.

Switching the power on:

Turn on the POWER switch.
The screen will appear.

Switching the power off:

Turn off the POWER switch.

Left side of the 3144-20

• If the battery mark (

at the upper right of the

screen) lights when power is turned on, the bat-
teries are depleted. Replace with new ones.

❖

2.2, "Installing the Batteries" (page 27)

❖

6.1, "Battery Replacement" (page 103)

• The settings of the immediately preceding mea-

surement are retained even when power is
turned off. Turning power on again restores the
immediately preceding settings. Note that any
data recording in progress at the time is stopped.

• After use, always turn OFF the power.

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Summary of Contents for 3144-20

Page 1: ...ching the Strap 26 2 2 Installing the Batteries 27 2 3 Connecting the AC Adapter 29 2 4 Connecting the 9741 CLAMP ON VOLTAGE SENSOR 30 2 4 1 Connecting the Sensor to the Voltage Sensor Input Terminal 30 2 4 2 Connecting the Instrument to the Line being Measured 32 2 5 Connecting Signals to the BNC Input Terminal 34 2 6 Connecting to Ground 36 2 7 Turning the Power On Off 38 2 8 Connecting the Earp...

Page 2: ...alling the driver 58 4 2 2 Installing software 68 4 3 Setting the Clock 71 4 4 Transferring Data to the PC 73 4 5 Analyzing Recorded Data on the PC 78 4 6 Saving Images of Waveform Windows 85 4 7 Printing a Waveform Window 86 4 8 Analyzing Saved Recorded Data with Excel 88 4 9 Error Information 89 Chapter 5 Specifications 93 5 1 Main Unit Specifications 93 5 2 Clamp Specifications 100 Chapter 6 Ma...

Page 3: ...iii Contents 6 4 Error Indications and Corrective Action 105 6 5 System Mode 106 6 6 Instrument Disposal 111 ...

Page 4: ...Contents iv ...

Page 5: ...strument inspect it care fully to ensure that no damage occurred during shipping In particular check the accessories panel switches and connectors If damage is evident or if it fails to operate according to the specifications contact your dealer or Hioki representative Confirming package contents 9741 CLAMP ON VOLTAGE SENSOR 1 Instruction Manual 1 LR6 alkaline batteries 6 9445 02 AC ADAPTER UL SA1...

Page 6: ... injury or death as well as damage to the instrument Be certain that you understand the instructions and precau tions in the manual before use We disclaim any responsibility for accidents or injuries not resulting directly from product defects In the manual the symbol indicates particu larly important information that the user should read before using the instrument The symbol printed on the instr...

Page 7: ...ndicated value The value currently being measured and indi cated on the measuring instrument Indicates that incorrect operation presents an extreme hazard that could result in serious injury or death to the user Indicates that incorrect operation presents a sig nificant hazard that could result in serious injury or death to the user Indicates that incorrect operation presents a pos sibility of inj...

Page 8: ...fixed installations connected directly to the distribution panel and feeders from the distribution panel to out lets CAT IV The circuit from the service drop to the service en trance and to the power meter and primary overcur rent protection device distribution panel Higher numbered categories correspond to electrical environ ments with greater momentary energy So a measurement device designed for...

Page 9: ...nsulation on the 9741 CLAMP ON VOLTAGE SENSOR is undamaged and that no bare con ductors are improperly exposed Using the instrument in such conditions could cause an electric shock so contact your dealer or Hioki representative for repair Operating Precautions Before Use Installation Operating Environment and Handling of the Instrument Do not allow the instrument to get wet and do not take measure...

Page 10: ...ions the instrument may be damaged and insulation may deterio rate so that it no longer meets specifica tions This instrument is not designed to be entirely water or dust proof To avoid dam age do not use it in a wet or dusty environ ment Do not use the instrument near a device that generates a strong electromagnetic field or electrostatic charge as these may cause erroneous measurements To avoid ...

Page 11: ...damaged either remove it from service or mark it clearly so that others do not use it inadvertently Accurate measurement may be impossible in the presence of strong magnetic fields such as near transformers and high current conductors or in the presence of strong electromagnetic fields such as near radio transmitters Handling of Cables To avoid breaking the cables do not bend or pull them Avoid st...

Page 12: ...d by HIOKI Keep in mind that using any other type of sensor may result in electric shock or mal function Note the following maximum input voltage and maximum rated voltage to earth of the BNC input terminal If their voltages are exceeded this device will be damaged and personal injury will result Therefore do not perform measurement in this case Maximum input voltage 5 VPEAK Maximum rated voltage ...

Page 13: ... or humidity as there is a danger of warping with consequent loss of data To remove dirt dust or fingerprints from the disc wipe with a dry cloth or use a CD cleaner Always wipe radially from the inside to the out side and do no wipe with circular movements Never use abrasives or solvent cleaners Hioki shall not be held liable for any problems with a computer system that arises from the use of thi...

Page 14: ...Operating Precautions 10 ...

Page 15: ...cy bands and routes through which noise enters and to take appropri ate corrective action The 3144 20 NOISE SEARCH TESTER can search for noise frequency bands and routes of penetration by simply clamping the 9741 CLAMP ON VOLTAGE SENSOR to the line being mea sured Moreover the logging function of the instrument enables long time monitoring The USB interface allows recorded data to be transferred t...

Page 16: ...y Propagation routes Noise is propagated through various routes including communication lines and power supply lines The instrument can search for noise frequency bands and penetration routes by simply attaching the 9741 CLAMP ON VOLTAGE SENSOR Cell phone Penetratesthrough communication lines Penetrates through power supply lines Extension line Lighting apparatus Home appliances Power supply lines...

Page 17: ... Indicates the peak value in each frequency band and the time measured Memory function for up to 64 000 items of data Records measurement data and measurement times for up to 64 000 items of data Equipped with USB interface Using the PC software supplied with the instru ment enables the transfer of data to a PC display of time series data and output to a printer Compatible with two different power...

Page 18: ...over for the voltage sen sor input terminal BNC input termi nal and output ter minal When not using the instrument place the protec tive cover back in place page 18 Protective cover Operating keys LCD display Cover fastening method when instrument in use 3144 20 NOISE SEARCH TESTER ...

Page 19: ...to the voltage sensor input terminal or BNC input terminal page 41 Connect the supplied 9741 CLAMP ON VOLTAGE SENSOR here page 30 Switch to select the input impedance of the BNC input terminal 50 Ω 1 MΩ approx 120 pF page 34 Voltage sensor input terminal BNC input terminal Output terminal Selector switch Bottom Surface Plug the USB cable in this terminal Rear Side USB terminal Battery cover Setscr...

Page 20: ...put terminal Plug in the earphone used to listen to noise here page 40 Plug in the 9445 02 or 9445 03 AC ADAPTER supplied with the in strument here Ground terminal for this in strument page 36 Protective cover when fastened Strap hole POWER switch Volume control knob AC adapter connection terminal Ground terminal Earphone terminal ...

Page 21: ...func tion OFF Indicates the peak detection time with the PEAK HOLD function ON Battery mark Lights when the supply volt age drops below 6 5 V Indication of recording time interval MONI Remains on during monitoring REC Remains on during recording VIEW Remains on during display of recorded data Blocks Storage units of recorded data One block can hold up to 8 000 items of data Indicates the delimiter...

Page 22: ...o be indicated with the PEAK HOLD function ON Scrolls recorded data on the data view screen VIEW Sets the date and time in date and time setup Values DOWN PEAK HOLD key Sets the PEAK HOLD function on and off on the monitoring screen MONI or recording screen REC Each pressing of this key shifts flash ing to the setting position in order of Year Month Day Hour Minute Second in date and time setup De...

Page 23: ...e and time in date and time setup Values UP REC key Press for 1 sec Starts or stops recording Starts on the monitoring screen MONI Stops on the recording screen REC REC INTER VAL key Sets the recording interval on the monitoring screen MONI OVER WRITE ON OFF key Press for 1 sec Switches between Automatic Stopping Mode and Overwrite Recording Mode for recording on the monitoring screen MONI Deletes...

Page 24: ...Chapter 1 Overview 20 9741 CLAMP ON VOLTAGE SENSOR Clamp section Connector Lever page 36 page 30 page 32 Pressing the lever opens the clamp section Ground terminal ...

Page 25: ...PEAK HOLD function OFF Switching of indication Change of settings Date indication Time indication DATE TIME To cancel Press any key other than the above Press for 1 sec Value setting DOWN UP Shifts to setting position Year Month Day Hour Minute Second End of setup The setting position flashes Set the value at the flashing position Recording Interval On MONI Change of settings Each pressing of the ...

Page 26: ... for 1 sec remains on CONT Goes off When memory be comes full recording stops automatically Press for 1 sec CONT Start and Stop of Measurement Start on MONI Stop on REC Start and stop of mea surement REC MONI Recording is started Recording is stopped Lights Lights Press for 1 sec Data deletion On MONI or VIEW Deletion Batch dele tion Press for 1 sec simultaneously All recorded data is deleted ...

Page 27: ...the right Indicates the peak value of the range in which is lighting and the detection time Goes off Switching of Screens Switching between monitoring screen MONI and data view screen VIEW Press simultaneously MONI VIEW Lights Lights Monitoring screen MONI Data view screen VIEW Allows monitoring record ed data Viewing of Recorded Data On VIEW Selecting the memory block Scrolling the data Each pres...

Page 28: ...Chapter 1 Overview 24 ...

Page 29: ...rations Chapter 2 Connect to the output terminal page 41 Attach the strap page 26 1 Install the batteries page 27 2 Connect the AC adapter page 29 3 Connect the 9741 page 30 4 Turn on the POWER switch page 38 Rear side Attach the earphone page 40 Connect to ground page 36 Connect the USB cable Connect to the BNC input terminal page 34 ...

Page 30: ...ocation 2 1 Attaching the Strap Attach both ends of the strap securely to the instrument If insecurely attached the instrument may fall and be damaged when carrying Tighten the strap suffi ciently to prevent loos ening or twisting 3144 20 Attach the two rings of the strap to the respective loca tions in the 3144 20 ...

Page 31: ... used 2 2 Installing the Batteries Do not mix old and new batteries or different types of batteries Also be careful to observe battery polarity during installation Otherwise poor performance or damage from battery leakage could result Do not use other than the specified type of bat teries LR6 alkaline batteries Using manganese batteries will result in a shorter operating time than when using alkal...

Page 32: ... then loosen the setscrew to detach the battery cover 3 Install six LR6 alkaline batter ies in the battery compart ment and confirm the correct polarity Replace all batteries at the same time 4 Put the battery cover back in place then tighten the screw 3144 20 Tool required for installation Six LR6 alkaline batteries Phillips head screwdriver ...

Page 33: ...s range Turn the instrument off before connecting the AC adapter to the instrument and to AC power To avoid damaging the power cord grasp the plug not the cord when unplugging it from the power outlet 1 Connect the output plug of the AC adapter to the AC adapter connection terminal 2 Plug the AC adapter into a power outlet AC adapter connection terminal Right side of the 3144 20 When using the AC ...

Page 34: ... connecting any other type to the terminal could result in electric shock or malfunction To prevent damage to the instrument and sen sor never connect or disconnect a sensor while the power is on or while the sensor is clamped around a conductor To avoid damaging the output cable grasp the connector not the cable when unplugging the cable Be careful to avoid dropping the clamps or oth erwise subje...

Page 35: ... Hold the upper part of the connector to plug it in The connector cannot be inserted if held by the me tallic part Tip of the 9741 s connector Insert the connector by aligning its protrusion with the groove of the voltage sensor input terminal Hold the metallic part of the connector to unplug it The connector cannot be unplugged if held by the up per part ...

Page 36: ... than 200 VAC or over bare conductors The 9741 should only be connected to the secondary side of a breaker so the breaker can prevent an accident if a short circuit occurs Connections should never be made to the primary side of a breaker because unrestricted current flow could cause a serious accident if a short circuit occurs To avoid electric shock when measuring live lines wear appropriate prot...

Page 37: ...e typical characteristics data for the relationship between the diameter of cable being measured and the sensitivity and between the cable position inside the clamp and the sensi tivity page 101 Especially when data must be recorded for an extended period of time fix the position of the cable being measured inside the clamp OK Secure the conductor in the center of the clamp Max diameter of clamp 2...

Page 38: ...ge is the same as for input from the 9741 0 to 50 dBV 2 5 Connecting Signals to the BNC Input Terminal Note the following maximum input voltage and maximum rated voltage to earth of the BNC input terminal If their voltages are exceeded this device will be damaged and personal injury will result Therefore do not perform measurement in this case Maximum input voltage 5 VPEAK Maximum rated voltage to...

Page 39: ...e 3144 20 side Turn clockwise to lock To unplug the connector un lock it by turning it counter clockwise then pull it out Lock BNC input terminal connector guide pins BNC connector BNC input terminal 1 Plug the BNC connector into the BNC input terminal 2 Use the selector switch to select the input impedance 50Ω 1MΩ approx 120 pF Plugging in and unplugging the BNC connector ...

Page 40: ...uding the cable being measured by means of the shielding effect 2 6 Connecting to Ground Failure to connect the instrument to ground would make the measurement susceptible to effects from objects other than the cable being measured thus making it impossible to conduct correct measure ment 1 Loosen the screw of the 9741 ground terminal and pass the ground wire through the earth ing hole 2 Tighten t...

Page 41: ... other end of the ground wire to ground Required tools Ground wire flat tip screwdriver About ground wires Applicable wires Solid wire 0 4 mm AWG26 to 1 2 mm AWG16 in dia Stranded wire 0 3 mm2 AWG22 to 1 25 mm2 AWG16 in dia Diameter of strand 0 18 mm or more Recommended applicable tool Flat tip screwdriver with tip width of 2 6 mm Connecting the 3144 20 NOISE SEARCH TESTER Right side of the 3144 2...

Page 42: ...ear Switching the power off Turn off the POWER switch Left side of the 3144 20 If the battery mark at the upper right of the screen lights when power is turned on the bat teries are depleted Replace with new ones 2 2 Installing the Batteries page 27 6 1 Battery Replacement page 103 The settings of the immediately preceding mea surement are retained even when power is turned off Turning power on ag...

Page 43: ...ollowing are indicated on the screen when power is turned on Model indicated Date indicated Time indicated Data memory checked Monitoring screen POWER switch turned ON The checking time for data memory varies depending on the contents of memory ...

Page 44: ...d for example in identifying the type of noise signal 2 8 Connecting the Earphone To avoid damage to the instrument do not apply current or voltage to Earphone terminal 1 Plug the earphone into the earphone terminal Insert the plug securely as far as it will go 2 Adjust the sound volume by turning the VOLUME control knob Right side of the 3144 20 Connect the earphone here ...

Page 45: ...heck a detected sig nal by its waveform 2 9 Connecting Signals to the Output Terminal To avoid damage to the instrument do not short circuit the output terminal and do not input voltage to the output terminal Connect this to the input ter minal of an oscilloscope or other measuring instrument Output terminal Top side of the 3144 20 ...

Page 46: ...Chapter 2 Measurement Preparations 42 ...

Page 47: ... and Measurement Chapter 3 3 1 Sample Measurement Location of measurement Indoors Facility being measured ADSL circuit Measured object Noise signal Measurement period 8 hours Data storage Saved in internal memory Measuring conditions Range x1 Recording interval 1 min 3144 20 9445 02 or 9445 03 AC ADAPTER 9741 CLAMP ON VOLTAGE SENSOR USB cable Others PC PC software ground wire tools ...

Page 48: ...2 Connect the 9741 CLAMP ON VOLTAGE SENSOR to the volt age sensor input terminal of the instrument 3 Connect the ground wire to the ground terminal of the instru ment 4 Connect the ground wire to ground 5 Turn on the POWER switch of the instrument 6 Clamp the 9741 CLAMP ON VOLTAGE SENSOR to the ADSL circuit 1 2 3 3144 20 ADSL circuit 4 5 9741 6 ...

Page 49: ...rent time then set the date and time 3 6 Setting Date and Time page 55 2 Set the range to 1 3 Set the recording interval to one minute 4 Set up the recording method 3 3 Recording Data REC page 50 Press for 1 sec Lights Overwrite Record ing Mode Goes off AutomaticStopping Mode 3 Starting data recording Press this key for 1 sec to start recording ...

Page 50: ...on of PEAK HOLD function page 48 Recording in progress 4 Stopping data recording 1 Press this key once again for 1 sec to stop recording 2 Remove the 9741 CLAMP ON VOLTAGE SENSOR from the ADSL circuit 3 Turn off the POWER switch 4 Disconnect the AC adapter 9741 and ground wire from the instrument ...

Page 51: ...program supplied 4 2 Installation page 58 4 Transfer recorded data from the 3144 20 to the PC 4 4 Transferring Data to the PC page 73 5 Display time series data in waveforms and check the noise level peak value peak detection time etc corre sponding to each frequency band 4 5 Analyzing Recorded Data on the PC page 78 The waveform data can be saved in CSV format 4 8 Analyzing Saved Recorded Data wi...

Page 52: ...es the indications of range and scale 1 1V range Scale indication 0 to 30 dBV 10 0 1V range Scale indication 20 to 50 dBV Activation deactivation of PEAK HOLD function When the PEAK HOLD function is currently active ON the instrument shows the peak value of the level detected in each frequency range and the detection time PEAK HOLD lights Peak hold ON PEAK HOLD goes off Peak hold OFF Each pressing...

Page 53: ... from the start of recording to the present time When the PC soft ware is used the indications of peak values and detection times cover all recorded data that was downloaded to the PC For this reason if data was acquired in overwrite recording mode the 3144 20 and PC software may indicate different peak values and detection times When there are multiple peak values the time of the peak value detec...

Page 54: ...e start of recording the data must be deleted to start recording Data deletion page 53 3 3 Recording Data REC To record data use the 9445 02 or 9445 03 AC ADAPTER When the instrument is operated on batteries all data may not be saved since the time of continuous use depends on the service life of batteries in use Due to the principles of measurement the detecting sensitivity of the 9741 varies wit...

Page 55: ...d ON OFF of peak value indication page 48 2 Set the recording interval This setting cannot be changed while recording is in progress Each pressing of the REC key switches the indica tion of recording intervals 1 2 5 10 20 30 sec 1 2 5 10 20 30 60 min The maximum recording time varies with the recording mode selected Recording Time page 95 3 Set the recording mode Press the OVERWRITE key for 1 sec ...

Page 56: ... screen REC opens REC lights The occupied state of memory is displayed on the screen End of recording _________________________ Press the REC key again for 1 sec REC goes off The instrument stops recording and returns to the monitoring screen MONI When measurement is stopped a delimiter ap pears at the end of the blocks ...

Page 57: ...ndow appears Recorded data can be deleted through monitoring screen MONI or data view screen VIEW After the data is deleted operation returns to the moni toring screen MONI 3 4 Deleting Memory Press these keys simul taneously for 1 sec Note that once initiated data deletion cannot be cancelled It takes up to about 30 seconds to delete data Data deletion cannot be executed block by block ...

Page 58: ...ill be displayed Pressing either key returns operation to the monitoring screen MONI 6 4 Error Indications and Corrective Action page 105 2 Select the memory block Press the MEM BLOCK key to select the memory block from which you wish to display data The last data of the block selected will be shown 3 Select the data you want to display Use the key or key to scroll data recorded in the selected me...

Page 59: ...plied PC software 4 3 Setting the Clock page 71 1 Activate date and time setup mode Press the DATE TIME key for 1 sec on the moni toring screen MONI with the PEAK HOLD func tion OFF The digits of the year flash 2 Set the date and time Move the flashing digits to the position you want to change Each pressing of PEAK HOLD shifts the flashing as follows Year Month Day Hour Minute Sec ond End Change t...

Page 60: ...o second digit then press the PEAK HOLD key again to define the set ting Operation returns to the monitoring screen MONI Cancellation of settings Pressing either key shown at left before defining the set tings will cancel the settings and return operation to the monitoring screen MONI ...

Page 61: ...dows 98 Me 2000 XP Only compatible in English or Japanese lan guage environment The CPU memory display and other hard ware environments should conform to those recommended by the OS HDD capacity 10 MB or more of disk space Interface USB Ver 1 1 or later Only one 3144 20 unit can be connected to the PC at a time Composition of CD R Folder English Japanese Folder containing an application setup file...

Page 62: ...nized by the device name of HIOKI 3144 NOISE SEARCH TESTER After displaying Found New Hardware on the screen the PC starts the Found New Hardware Wizard 4 2 Installation Do not plug in or unplug the USB cable while the instrument is operating The PC and 3144 20 should be connected on a one on one basis Multiple 3144 20 units cannot be connected to the PC at a time When a 3144 20 unit with a differ...

Page 63: ...nstall the driver The following describes how to install the driver for each type of OS For Windows XP page 59 For Windows 2000 page 61 For Windows Me page 63 For Windows 98 page 65 For Windows XP__________________________ 1 Insert the CD R supplied with the instrument into the CD ROM drive The Found New Hardware Wizard window appears 2 Check Install the software automatically then click the Next ...

Page 64: ...es copying of the file When this software is recognized the screen will display a message stating that the software is not authorized by Microsoft Ignore the message and continue operation 4 Click the Finish button 5 When the Found New Hardware Wizard window closes remove the CD R from the CD ROM drive ...

Page 65: ... 2000 ________________________ 1 When the Found New Hardware Wizard window appears click the Next button 2 Insert the CD R supplied with the instrument into the CD ROM drive 3 Check Search for a suitable driver for my device then click the Next button ...

Page 66: ...Chapter 4 Analysis of Recorded Data 62 4 Check CD ROM drives thus deselecting the other items then click the Next button 5 Click the Next button ...

Page 67: ...Finish button 7 When the Add New Hardware Wizard window closes remove the CD R from the CD ROM drive For Windows Me__________________________ 1 Insert the CD R supplied with the instrument into the CD ROM drive The Add New Hardware Wizard window appears ...

Page 68: ...nalysis of Recorded Data 64 2 Check Automatic search for a better driver then click the Next button 3 Click the Finish button 4 When the Add New Hardware Wizard window closes remove the CD R from the CD ROM drive ...

Page 69: ...s 98 __________________________ 1 When the Add New Hardware Wizard window appears click the Next button 2 Check Search for the best driver for your device then click the Next button 3 Insert the CD R supplied with the instrument into the CD ROM drive ...

Page 70: ...Chapter 4 Analysis of Recorded Data 66 4 Check CD ROM drive thus deselecting the other items then click the Next button 5 Click the Next button Clicking the button initiates copying of the file ...

Page 71: ... Data 6 When the following window subsequently appears click the Finish button 7 When the Add New Hardware Wizard window closes remove the CD R from the CD ROM drive If you need to install software see 4 2 2 Installing software page 68 ...

Page 72: ...ive applications on the PC 2 Insert the CD R HIOKI Data Viewer for 3144 20 supplied with the instrument into the CD ROM drive 3 Open the folder English included on the CD R then execute Setup exe This will activate the installer and open the HIOKI Data Viewer for 3144 20 window 4 Click Next ...

Page 73: ...ded Data 5 To set up the installing destination Select Custom and click Next Click Change in the Custom Setup window then specify the installing destination folder To install by default Select Complete and click Next 6 Click Install ...

Page 74: ... DATA VIEWER for 3144 20 Data Viewer for 3144 20 from the Start menu of Windows to activate the applica tion Uninstallation 1 Select Setup Control Panel from the Start menu then click Add Remove Programs 2 Select HIOKI Data Viewer for 3144 20 then click Remove or Change Remove 3 Uninstall the program by following the procedure appearing on the screen ...

Page 75: ...disabled 3 Select Communication Clock setting from the menu bar of DATA VIEWER for 3144 20 or left click the mouse button on Clock on the toolbar The clock setting window will appear 4 3 Setting the Clock Only one 3144 20 unit can be connected to the PC at a time If the 3144 20 is displaying an error the USB cable will not be recognized even when con nected to the 3144 20 Clear the error by press ...

Page 76: ... the year 2000 and subse quent years Data may not be handled for other years Clock setting cannot be made while the instru ment is recording data When data transfer is not to be made disconnect the USB cable from the 3144 20 Moreover refrain from plugging in or unplugging the USB cable unless absolutely necessary When the instrument is operated on batteries such action may shorten the time of cont...

Page 77: ...dure is the same as that for 4 3 Set ting the Clock page 71 3 Select Communication Data transfer from the menu bar of DATA VIEWER for 3144 20 or left click the mouse button on Transfer on the toolbar to open the 3144 20 Data list window 4 4 Transferring Data to the PC Only one 3144 20 unit can be connected to the PC at a time Recorded data cannot be transferred while the instrument is still record...

Page 78: ... is transferred to the PC Select the desired file by checking the check box located to the left of the file No Update list The file list of the 3144 20 is acquired again Execute this command when a 3144 20 unit with a different serial No has been recon nected while the 3144 20 Data list window is displayed Delete all All data recorded on the 3144 20 is deleted Keep in mind that recorded data canno...

Page 79: ... PC To transfer selected data Select the file to be transferred by checking the check box located to the left of the file No then click Transfer 5 Left click the mouse button on Close to close the 3144 20 Data list window While data transfer is in progress do not plug in or unplug the USB cable Such action will hinder normal transfer It takes up to about five minutes to transfer recorded data ...

Page 80: ...o the PC a waveform window appears for each file transferred 7 Save the recorded data that has been transferred page 77 Delete any recorded data remaining on the 3144 20 that is no longer necessary page 77 8 Disconnect the USB cable from the 3144 20 and PC then switch off the 3144 20 ...

Page 81: ...aved in CSV format delimited with commas Deleting data recorded on the 3144 20 _______ Delete all data recorded on the 3144 20 that is not necessary 1 Select Communication Data transfer from the menu bar of DATA VIEWER for 3144 20 or left click the mouse button on Transfer on the toolbar to open the 3144 20 Data list window In this operation leave the USB cable connected 2 Left click the mouse but...

Page 82: ...tool bar The Open file window will appear 3 Select the recorded data saved on the PC then left click the mouse button on Open The waveform window of the recorded data will appear 4 5 Analyzing Recorded Data on the PC The operation above is not necessary when waveform windows are currently displayed such as immediately after data transfer has been made from the 3144 20 to the PC Waveforms may not b...

Page 83: ...d among all data 6 Cursor A Can be moved around when dragged with the left mouse button held down 7 Cursor B Can be moved around when dragged with the left mouse button held down 8 Data recorded in each frequency range 9 Horizontal axis scroll bar Allows movement of the waveform to dis play when the horizontal axis is displayed in an enlarged size 10 Vertical axis scroll bar Allows movement of the...

Page 84: ...n dow 5 Waveform color Allows the waveform color of each frequen cy range in the waveform window to be changed Select the desired color in the Color Setup window by left clicking the mouse button then left click the mouse but ton on OK 6 Name of frequency range 7 Peak of all data Detection times and values of peaks among all recorded data 8 Peak between A B Detection times and values of peaks of r...

Page 85: ...inting a Waveform Window page 86 Preview Displays a sample of waveform printout Print Settings Used to make print settings 4 7 Printing a Waveform Window page 86 Exit Menu Edit Save Image Saves the image of a waveform window in a bit map 4 6 Saving Images of Waveform Win dows page 85 Copy Copies the images of a waveform window and information window to the Clipboard Both im ages can be pasted to s...

Page 86: ... be changed Background Allows the background color of the waveform window to be changed Frame Allows the frame color of the graph to be changed Default Restores all the colors above to the standard colors Independent ly Displays the waveforms of each frequency range divided into separate frames Toolbar Allows whether to select display on the toolbar Status Bar Allows whether to select display of t...

Page 87: ...EWER for 3144 20 Enlarge time axis Enlarges the time base of a graph Reduce time axis Reduces the time base of a graph Total View Displays an entire graph Independently Display a graph in a split form Transfer Transfers recorded data from the 3144 20 to a PC Clock Sets the clock of the 3144 20 Open Opens a file Save As Saves a file Copy Copies a window to the Clipboard Print Prints a file Enlarge ...

Page 88: ...me function as View Re duce on the menu Total View Performs the same function as View Total View on the menu Color settings Performs the same function as View Color Setup on the menu Jump Moves the cursor to the selected position when the time base is displayed in an enlarged size The position can be selected from Start Be ginning of data End Terminal end of data Cursor A and Cursor B Put cursor M...

Page 89: ... of a waveform window and information window Graph Only Saves the image of a waveform window The Save As window will appear 3 Specify the saving location file name and type of file then left click the mouse button on Save The desired type of file can be selected from the following Full color bit map Monochromatic bit map Gray scale bit map 4 6 Saving Images of Waveform Windows If any part of an im...

Page 90: ...rint Settings from the menu bar then left click the mouse button on the color in which you wish to print Make a selection according to the printer Color Gray Scale or Monochrome can be selected To check a print image beforehand select File Preview from the menu bar 4 Select File Print from the menu bar or left click the mouse button on Print on the toolbar The Printer Settings window will appear F...

Page 91: ...rintout The image printed out may differ depending on the type of printer used If excessively large margins are set printing may be inhibited In such case set smaller margins Likewise printing may be inhibited when a paper size too small is selected ...

Page 92: ...Excel 4 8 Analyzing Saved Recorded Data with Excel Note that data edited with Excel and saved may not be opened with DATA VIEWER for 3144 20 If time must be indicated down to the second on a data sheet of Excel the cell format must be set The date and time indicated at the end of the Time row denote when measurement was com pleted ...

Page 93: ...r Indications 4 9 Error Information 1 Errors arising from the 3144 20 Error Description Stop By Battery Low Recording was stopped due to low battery voltage Replace the batteries of the 3144 20 with new ones Stop By Memory Error Recording was stopped due to frequent errors that occurred in 3144 20 memory The error is related to flash memory of the 3144 20 The 3144 20 must be repaired Stop By FIFO ...

Page 94: ...ck the 3144 20 and PC connections ac cording to the operation manuals USB Start Time Error Error in the recording start time at USB data reception Check the 3144 20 and PC connections ac cording to the operation manuals USB Interval Error Error in the recording interval at USB data re ception Check the 3144 20 and PC connections ac cording to the operation manuals USB Range Error Error in range in...

Page 95: ...ing Excel or other application Open Interval Error Error in the recording interval at file opening Possibility of error in normal file save of infor mation Or possibility that the file was over written using Excel or other application Open Range Error Error in range information at file opening Possibility of error in normal file save of infor mation Or possibility that the file was over written us...

Page 96: ...Chapter 4 Analysis of Recorded Data 92 ...

Page 97: ...cted with manual switch Maximum input voltage 5 V PEAK Maximum rated voltage to ground 5 V Frequency band width 500 Hz to 30 MHz Separated into the following seven bands 3dB band 500 Hz to 3 kHz 1 kHz range 7 5 kHz to 22 5 kHz 15 kHz range 35 kHz to 105 kHz 70 kHz range 125 kHz to 375 kHz 250 kHz range 0 5 MHz to 1 5 MHz 1 MHz range 1 5 MHz to 4 5 MHz 3 MHz range 10 MHz to 30 MHz 20 MHz range BNC ...

Page 98: ...ed data Up to 64 000 data items 8 blocks 8 000 data Number of measure ments 1 to 8 measurements depending on num ber of blocks used in each measurement Recording mode Automatic Stopping Mode When internal memory becomes full the measurement is completed up to 64 000 data items Overwrite Recording Mode CONT When internal memory becomes full the measurement continues by over writing older data Guara...

Page 99: ...onths 2 minutes 2 8 months 2 5 months 5 minutes 7 1 months 6 2 months 10 minutes 1 1 years 1 year 20 minutes 2 3 years 2 0 years 30 minutes 3 5 years 3 1 years 60 minutes 7 1 years 6 2 years 3 Data display function The recorded data of each frequency range acquired by the logging function is displayed on an LCD along with the time it was measured The data can be scrolled in the direction of the ti...

Page 100: ...unction Waveform monitoring Outputs input signals applied through in put dedicated to the 9741 or BNC input Bandwidth 500 Hz to 30 MHz 3 dB when terminat ed at 50Ω Output resistance 50Ω 10 1 kHz Input output ratio 2 1 when terminated at 50Ω Output accuracy 5 rdg 10 mV when terminated at 50Ω and 100 kHz Max open voltage 4 5 V Audible band monitoring Outputs an envelope of the detected sig nal with ...

Page 101: ...t 50 60 Hz maximum rated current 250 mA Maximum rated power 4 0 VA max 9741 included Time of continuous use About 5 hours when using batteries with monitoring function and at ambient tem perature of 23 C as reference value Description of com munication Data recorded in internal memory of the 3144 20 is transferred to a PC Interface USB Ver1 1 Battery life warning The mark appears when the supply v...

Page 102: ...ansient overvoltage 330 V EMC EN61326 1997 A1 1998 A2 2001 When using the 9445 03 AC ADAPTER EN61000 3 2 2000 EN61000 3 3 1995 A1 2001 Effect of conducted radio frequency electromagnetic field 5 dB at 3 V max Dimensions and Mass Approx 98W 179H 46D mm 3 86 W 7 05 H 1 81 D Approx 430 g 15 2 oz without batter ies Accessories 9741 CLAMP ON VOLTAGE SENSOR1 Carrying case 1 PC software CD R 1 LR6 alkali...

Page 103: ...ied with Instrument Functions Indication of data list Data download Indication of time series data in wave forms Indication of peak values and peak detection times Enlarging and reducing functions Pasting to the Clipboard Data save BMP save Print function ...

Page 104: ...cal Characteristics see Figure 2 page 101 Sensor output Voltage output Outputs voltage corresponding to the de tecting sensitivity Output impedance 50Ω 10 1 kHz Max clamp dia 20 mm dia Maximum rated volt age to earth 200 VAC Cord length Approx 1 m 39 37 Functional ground terminal Provided Supply voltage 5 V Supplied through connection to the 3144 20 Maximum rated power 0 5 VA max Operating tempera...

Page 105: ...III anticipated transient overvoltage 4000 V EMC EN61326 1997 A1 1998 A2 2001 Dimensions and Mass Approx 62W 158H 40D mm 2 44 W 6 22 H 1 57 D Approx 260 g 9 2 oz Temperature and humidity for guaran teed accuracy Guaranteed accura cy period 23 5 C 73 9 F 80 RH or less non condensating 1 year Frequency kHz Detecting Sensitivity dB Input voltage 1 V ...

Page 106: ...Position Y Direction X Direction Distance between Conductor and Clamp Center mm in X Direction Distance between Conductor and Clamp Center mm in Y Direction Variation of Detecting Sensitivity dB 15 10 5 0 5 10 15 15 10 5 0 5 10 15 7 6 5 4 3 2 1 0 1 7 6 5 4 3 2 1 0 1 Input voltage 1 V ...

Page 107: ...accidents involving electric shock After replacing the batteries replace the cover and screws before using the instru ment Do not mix old and new batteries or differ ent types of batteries Also be careful to observe battery polarity during installation Otherwise poor performance or damage from battery leakage could result About used batteries To avoid the possibility of explosion do not short circ...

Page 108: ...ate and time deviate substantially when the instrument is switched on it is the time to replace that battery Contact your dealer or Hioki representative If the instrument seems to be malfunctioning confirm that the batteries are not discharged before contacting When sending the instrument for repair remove the batteries and pack carefully to prevent dam age in transit Include cushioning material s...

Page 109: ...de Error at start of re cording Indicates that there is no empty memory block If recording is still desired delete all data in memory this deletes all data Download the necessary recorded data to a PC be fore deleting it Data download page 73 Error at execution of memory deletion or switching from the monitoring screen MONI to the data view screen VIEW Indicates that there is no data in memory Mem...

Page 110: ...ormation pro gram version serial No check indications con duct self tests ROM data memory and forcibly delete data memory 1 Activating System Mode The following window appears 6 5 System Mode Turn the power on by pressing the RANGE key and REC INTERVAL key at the same time ...

Page 111: ...rvice 2 Displaying the program version Press The program version is displayed 3 Displaying the serial No Press The 6 high order digits of the serial No are dis played Press again The 3 low order digits of the serial No are dis played ...

Page 112: ...er 6 Maintenance and Service 108 4 Checking indications on the LCD screen Press Each pressing of the key switches indications in the following order Screen that appears when System Mode is activated All off ...

Page 113: ...sults in abnormal the memory check is terminated Data memory check Indication during execution Indication at the end Normal Abnormal Repair required Indication during execution Indication at the end Normal Abnormal Press the RANGE key and DATE TIME key at the same time If the data memory check results in abnormal ini tialize data memory and repeat the data memory check ...

Page 114: ... memory 7 Deactivating System Mode Turn off the POWER switch Indication during execution Indication at the end No indication Normal Abnormal Repair required Press the REC key and REC INTER VAL key at the same time When data memory is initialized all data contained in data memory will be discarded ...

Page 115: ...wer switch and disconnect the AC adapter before removing the lithium battery If the protective functions of the instrument are damaged either remove it from service or mark it clearly so that others do not use it inadvert ently When disposing of this instrument remove the lithium battery and dispose of battery and instru ment in accordance with local regulations ...

Page 116: ... instrument then remove the four screws fastening the lower case 3 Remove the lower case and USB cover 4 Remove the circuit board from inside 5 Use a wire cutter to cut off the two leads of the lithium button battery contained in the cor ner of the circuit board on back of the upper case Circuit board Lead Upper case Lower case Screws Lithium battery USB cover Circuit board ...

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