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Voltech AT360, User Manual

The Voltech AT360 User Manual is essential for understanding and maximizing the potential of this advanced device. Easily download the manual for free from our website to access detailed instructions, tips, and troubleshooting information. Ensure you get the most out of your Voltech AT360 with this comprehensive guide.

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V

OLTECH 

AT

I 

U

SER 

M

ANUAL

 

P

AGE 

7-9 

Tests Currently Available 

Test 

Description 

Transformer Application 

Reason for Test 

CTY Continuity 

All 

Checks properly installed 
fixture and part 

R DC 

Resistance 

All 

Checks properly installed 
fixture and part, correct wire 
used and integrity of 
terminations 

R2 

DC Resistance Match 

SMPS, audio & telecom 

Checks matching between 
windings 

LS 

Inductance 
(Series Circuit) 

LP 

Inductance 
(Parallel Circuit) 

Checks primary turns, right 
grade of correctly 
assembled core material 

QL Quality 

Factor 

D 

Dissipation Factor (tan

δ

) 

RLS 

Equivalent Series 
Resistance 

RLP 

Equivalent Parallel 
Resistance 

Most, but not usually line 
frequency  

Checks right grade of 
correctly assembled core 
material and for shorted 
turns 

LSB 

Inductance with Bias 
Current (Series Circuit) 

LPB 

Inductance with Bias 
Current (Parallel Circuit) 

Transformers that carry a 
significant DC bias current 
in normal operation 

Checks number of turns, 
right grade of correctly 
assembled core material 

L2 

Inductance Match 

SMPS, audio & telecom 

Checks matching between 
windings 

LL 

LLO 

Leakage Inductance 

SMPS, electronic ballasts  

Checks windings have been 
installed in the correct 
position relative to the core 

C 

Interwinding Capacitance 
(Parallel Circuit) 

High frequency, isolating 

Checks winding positioning 
and insulation thickness 
between windings 

CS 

Capacitance 
(Series Circuit) 

Testing capacitors 

 

CP 

Capacitance 
(Parallel Circuit) 

Testing capacitors 

 

C2 

Capacitance Match 

SMPS, audio & telecom 

Checks correct winding 
position on bobbin 

TR 

Turns Ratio and Phasing 

Checks windings have 
correct turns and polarity 

TRL 

Turns Ratio by Inductance 

Most, but usually not line 
frequency 

Checks windings have 
correct turns 

LVOC 

Low Voltage Open Circuit 

Most, but usually not line 
frequency 

Checks windings have 
correct turns 

IR Insulation 

Resistance  All 

Checks winding isolation, 
checks where safety is not 
involved 

GBAL 

General Longitudinal 
Balance 

Audio & telecom 

Checks common mode 
rejection ratio 

LBAL 

Longitudinal Balance 

Audio & telecom 

Checks common mode 
rejection ratio 

Summary of Contents for AT360

Page 1: ...Kelly Road Suite 306 Fort Myers FL 33908 U S A Tel 239 437 0494 Fax 239 437 3841 sales voltech com Voltech Instruments Ltd 148 6 th Street Harwell International Business Centre Didcot Oxon OX11 ORA U...

Page 2: ...smitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of Voltech Instruments Voltech Instruments 2002 2005 All rights reserved...

Page 3: ...e pr sent manuel d utilisation Dans le doute s adresser au fournisseur GEFAHR VON ELEKTRISCHEM SCHOCK Nur entsprechend ausgebildetes Personal ist berechtigt diese Ausr stung nach dem Lesen und Verst n...

Page 4: ...uation 1 14 1 8 Overview 1 15 1 9 How Does the ATi Tester Run a Test 1 26 2 Getting Started 2 1 2 1 Introduction 2 5 2 2 Installation 2 10 2 3 Quick Start Tutorial 2 19 2 4 Self Test 2 49 2 5 Producti...

Page 5: ...ailable from Voltech 5 13 5 5 Kelvin Connections 5 18 6 FRONT PANEL MODES 6 1 6 1 LCR Mode Basic Functions 6 5 6 2 Tests Available in the LCR Modes 6 17 6 3 LCR Menus 6 19 6 4 Compensation 6 29 6 5 LC...

Page 6: ...AGE VI VOLTECH ATI USER MANUAL 9 1 Warranty 9 5 9 2 Limitation of Warranty 9 5 9 3 Service and Calibration 9 6 9 4 Obtaining Service and Applications Support 9 6 9 5 Firmware Upgrades 9 7 10 INDEX 10...

Page 7: ...use this Voltech product If you experience any difficulty during installation or use of the ATi or are unsure of any of its features or abilities please do not hesitate to contact either your local s...

Page 8: ...INTRODUCTION PAGE 1 2 VOLTECH ATI USER MANUAL...

Page 9: ...e Functions 1 9 1 5 ATI FEATURES SUMMARY 1 11 1 6 TYPICAL PRODUCTION INSTALLATION 1 12 1 7 USING THE ATI FOR DESIGN AND EVALUATION 1 14 1 8 OVERVIEW 1 15 1 8 1 Creating Programs The Editor 1 16 1 8 2...

Page 10: ...INTRODUCTION PAGE 1 4 VOLTECH ATI USER MANUAL...

Page 11: ...ion To ensure operator safety all safety information must be read and understood Important information that explains a general principle or refers to other sections of the manual The contents of this...

Page 12: ...ing insulation resistance testing Although the available energy of the source has been limited in accordance with EN61010 1 and can be considered safe care should be taken to avoid accidental or unexp...

Page 13: ...multaneously recalling test programs and recording test results Features ATi AT360 20 way switching matrix PC test editor and results server Test fixture system Small signal tests e g inductance capac...

Page 14: ...with bias LPB Inductance parallel circuit with bias C Interwinding capacitance QL Quality factor D Dissipation factor tan Z Magnitude of complex impedance ZB Complex impedance with bias ANGL Angle of...

Page 15: ...sistance Rdc Ohms DC resistance using high voltage source IR Ohms AC resistance series circuit R Ohms AC resistance parallel circuit R Ohms Inductance series circuit L Henries H Inductance parallel ci...

Page 16: ...NTRODUCTION PAGE 1 10 VOLTECH ATI USER MANUAL To determine which options were installed on your tester during manufacture check the list attached to the calibration certificate shipped with your ATi i...

Page 17: ...f a transformer to another winding Measures across different windings No need to manually change connections Fast execution of a sequence of different tests on multiple windings of a transformer ACCUR...

Page 18: ...anual or robotic operation Barcode input Run pad or footswitch to initiate operation Simple PASS FAIL operation by an unskilled operator Results Direct printing from the ATi printer port Results archi...

Page 19: ...r 3 Requires no software programming skills or expertise Test conditions may be entered manually or chosen automatically by measuring a sample transformer Program Archive Management Windows based Serv...

Page 20: ...D Q Rac X Z Rdc Insulation Resistance Turns Ratio Leakage Inductance Bias current up to 1A Fully programmable 5V 3MHz or AUTOMATIC test conditions 0 05 basic accuracy 4 terminal Kelvin connections usi...

Page 21: ...of the ATi in a production environment What appears in a test program How programs are created archived and then used in actual test Test fixtures Typical manual and robotic test situations Internal...

Page 22: ...ows The Test Program Editor supplied with your tester allows you to create such a program without software programming skills Each test required for the program is selected from a list of available te...

Page 23: ...manage the large numbers of test programs that may be required on a daily basis once they are in production use This is the function of a second PC program supplied with your ATi called the Server Us...

Page 24: ...y separate PC s are available The standard installation uses separate PC s for the Editor and Server Transferring a new test program from the Editor to the Server archive can be done in any of three w...

Page 25: ...ransferring a new test program from the Editor to the Server archive can be done in either of two ways Via the tester if the auxiliary port connection is made Directly from the Editor using save as to...

Page 26: ...PC for test program and results archive Advantages Convenient storage and management of large numbers of test programs e g 1000 Easy storage and management of test results Importing results into other...

Page 27: ...ed This is to allow the tester uninterrupted access to the Server for the purposes of accessing programs and storing results Usually requires an additional PC which could be a portable to be attached...

Page 28: ...from the Server to the AT where they will be held in the internal non volatile memory 3 Remove the PC and run all the production test programs from the AT internal memory Advantages Requires only occ...

Page 29: ...nswer just this question Fixtures are constructed on a standard fixture board which fits into the top surface of the tester The fixture system uses Kelvin connections to give the best possible measure...

Page 30: ...r swipes a barcode 2 Fits the fixture as prompted 3 Touches pad or presses footswitch Run Stop Fail Busy signals for process control Failed parts for rejection or rework Remote PC records all test dat...

Page 31: ...ts for connecting into your system Again the tester may be connected to a Server PC or used stand alone as described above Run Stop Fail Busy signals for process control Failed parts for rejection or...

Page 32: ...ur information only The ATi consists of the following 7 basic functional blocks Relay Switching Matrix The relay switching matrix is used to connect the selected test source and measurement circuits t...

Page 33: ...s the relay matrix the keyboard and display and the various interfaces 2 A fast digital signal processor that controls the test sources and performs the measurements The test sources relay matrix and...

Page 34: ...sts the sequence may be more complicated Notes All the relay switching is completed before the test source is energized This will ensure that there can be no arcing and prolong the life of the relays...

Page 35: ...VOLTECH ATI USER MANUAL PAGE 2 1 2 Getting Started...

Page 36: ...GETTING STARTED PAGE 2 2 VOLTECH ATI USER MANUAL...

Page 37: ...3 2 Drawing the Transformer Schematic 2 20 2 3 3 Creating the Test Program 2 22 2 3 4 Running the Program from the Editor 2 30 2 3 5 Server Quick Start 2 33 2 3 6 Running a Program on the Tester 2 36...

Page 38: ...GETTING STARTED PAGE 2 4 VOLTECH ATI USER MANUAL 2 9 SET UP MODE 2 77 2 9 1 Set up Softkey 2 78 AT Password 2 83 Resetting Tester Set Up Options 2 83 2 9 2 Groups Softkey 2 84...

Page 39: ...st fixtures is very important Please see the fixturing section of this manual for details of parts that are available from Voltech If you have any questions or are unsure of what to do at any point pl...

Page 40: ...lvin leads attached 9 pin D 9 pin D F F cable 9 pin D 25 pin D F F cable 25 pin D 25 pin D F F cable CD ROM inside the cover of this manual which contains the Editor and Server installation files and...

Page 41: ...test results and to provide prompts for data entry within the menu structure RUN Indicator The RUN indicator is a yellow LED This is illuminated when the tester is busy for example when running a tes...

Page 42: ...at the back of the ATi for use with automatic handling equipment and external indicators Keypad The keypad allows you to enter text data such as the part number i e test program name of the transform...

Page 43: ...of each side of the ATi Lightly touching the programmable run pads will start the programmed test sequence Footswitch The Run input of the Remote Port on the tester s rear panel can be optionally conn...

Page 44: ...on using the switch next to the line input at the back of the ATi 0 off You must connect the power lead to a socket with a safety ground contact When the ATi tester is switched on it performs a self t...

Page 45: ...panel readings See chapter 6 for more information no the LCR front panel mode Set Up is used to group download programs from a Server PC to the permanent store of the tester and to set up the options...

Page 46: ...upply to the PC Before attempting to install the Editor check that your PC satisfies the following hardware requirements PC processor 486 or better Memory 4MB minimum Hard disk space 2MB minimum Opera...

Page 47: ...es will be lost The same Editor program is used for all AT Series testers excluding the discontinued AT3500 and AT1000 PC COM Port Configuration When the installation of the Editor has been completed...

Page 48: ...e used for the Editor depending on your production needs A Server PC needs to be permanently connected to the ATi only if you wish to store test results or use a central program store rather than the...

Page 49: ...nd that you follow all of the manufacturer s instructions All supporting software must also be installed before attempting to configure the Server application The same server program is used for all A...

Page 50: ...e recognized by Windows Example of setup for DIGIBOARD XE Server Software Set up When the installation of the Server has been completed you will see the Server icon in the program group Voltech Softwa...

Page 51: ...an be accessed via the Setup Communications menu To assign a particular AT Series Tester to a COM port 1 Select the communication port to which your tester is connected from the COM PORT selection box...

Page 52: ...tory Change these settings if you wish to nominate your own program and results storage directories The setting of program path directories may be altered at any time The directory set up dialogue may...

Page 53: ...pose of this tutorial is to familiarize you with the process of creating a schematic and a test program using the editor Creating a Schematic of a 2 Winding 4 Terminal Sample Transformer This tutorial...

Page 54: ...vel menu bar and select Add Winding from the menu You will now see a winding with two terminals floating below the mouse pointer 2 Place the winding on the left hand side of the screen and press the l...

Page 55: ...windings to the test nodes of the tester Place the mouse pointer over terminal A press and hold the right mouse button Continue holding this mouse button down and drag the mouse pointer to test node 9...

Page 56: ...59 to 73 Resistance of winding CD 59 to 73 Inductance of winding AB 3H Turns ratio AB to CD 1 1 2 It is probable that the actual program used to test such a transformer in production would be the same...

Page 57: ...rogram 1 From the top level Program menu select Edit The screen will now be made up of three Windows Top left The schematic window showing the two windings Right The available tests window listing all...

Page 58: ...t of the available terminals 2 Now enter the resistance limits This can be done in four ways Click on this button to enter a nominal value with a percentage tolerance for example 66 with 10 tolerance...

Page 59: ...rement fixture effects that cannot be compensated for or to compensate the fixture manually so a compensation stage is not required to obtain the correct readings 4 Click on the OK button The test and...

Page 60: ...double clicking the left mouse button select LS Inductance Series Circuit from the Available Tests window At the dialogue box enter the data required for the inductance test Signal 1V again choose th...

Page 61: ...enter the data required for the turns ratio test Voltage 1V Frequency 50Hz Integration Leave as the default Medium The AT measures the turns ratio between primary and secondary windings and allows th...

Page 62: ...GETTING STARTED PAGE 2 28 VOLTECH ATI USER MANUAL Click on the OK button Again the test and its parameters will appear in the Program window...

Page 63: ...w contain the complete program The scroll bars in this window enable you to view each test in the program in turn to check that it is correct The Editor will not allow a program to be run in the AT un...

Page 64: ...tor default directory 2 3 4 Running the Program from the Editor The following section describes how to run a test program from the Editor To do this you must first create a program which includes only...

Page 65: ...ct Tester Download Program The Editor will now download the test program to the tester After a few seconds you should see a message to say that the download was successful If you see a message indicat...

Page 66: ...ue box containing the results of the test If the transformer had been connected up as in the schematic to nodes 7 8 9 and 10 then the results might be If no transformer is fitted the results will have...

Page 67: ...Server programs Editor and Server on Separate PC s In many situations the Editor and Server can be installed on separate PC s as shown in the illustration earlier In this situation the AT is used to p...

Page 68: ...say that the Download was successful If you see a message indicating that the download has failed check your cable COM Port connections and try again If the download continues to fail reboot both PC s...

Page 69: ...n of the tutorial demonstrates running the program on the AT from the archive on the server Before proceeding to that section if the Server and Editor are using the same COM Port on the single PC re a...

Page 70: ...ith the interface cable correctly fitted between the tester s server port and the selected Server PC COM port and the COM port is correctly configured in the Server software At this point the tester s...

Page 71: ...s to ensure that the AT is configured to use the Server as the source for test programs 1 From the top level menu choose Set Up to change to the following display 2 Press the softkey Set Up and at the...

Page 72: ...UAL 4 If as shown above the origin is INTERNAL then press the softkey Server so that the third line reads as follows 5 Press the softkey EXIT to return to the Set Up display and then press the EXIT so...

Page 73: ...y 2 The program name can now be chosen from the list of programs available on the PC Server If the list of programs fails to appear after a few seconds check that the AT Server is running the COM port...

Page 74: ...ad has been successfully completed you will see a message to fit the fixture similar to the following 5 As the fixture is already fitted and compensation is not required with the sample transformer si...

Page 75: ...e program is running the RUN indicator the yellow LED to the left of the display will be illuminated and the display will indicate the test currently being executed At the end of program execution the...

Page 76: ...ral times to repeat the program execution On each run of the program the test results should be passed back to the Server where they may be viewed in the On line Monitor window If batch statistics hav...

Page 77: ...ible from the Run Finish display by pressing the Results softkey see below The results listing screen displays all completed tests giving test number type result in both value and pass or fail and sta...

Page 78: ...which forms only a very brief introduction to the features available on your ATi Please study and browse through the rest of this manual or the on line help for the Windows software to get the best f...

Page 79: ...programs can be stored within the tester even when it is switched off Once a program is stored the tester may be used without PC Editor or Server software To operate the tester in this way the origin...

Page 80: ...press the Run key and continue as before Storing Groups of Programs Inside the ATi Using the PC Server Rather than dealing simply with individual programs the AT Server allows you to create groups of...

Page 81: ...e Set Up Then at the Set up display press the Groups softkey followed by the List softkey to obtain a list of program groups available for download Select the group to be downloaded to the tester and...

Page 82: ...e to you locally on the tester Results Analysis You may wish to use another application for further analysis of test results sent back to the Server Close down the Server so that you may have full acc...

Page 83: ...ll the test signal sources and measuring circuits are working properly and within their calibration limits Once the tester has warmed up for an hour you may run self test at any time by pressing the S...

Page 84: ...G STARTED PAGE 2 50 VOLTECH ATI USER MANUAL As the self test is running the front panel display will indicate progress using a horizontal bar At the end of the self test you should see the following s...

Page 85: ...ge shown on the lower two display lines will depend on what caused the failure In the unlikely event that your tester continues to fail please make a careful note of the failure message and error code...

Page 86: ...e tester and running and the tester has been set up to use the Server as the Program Store or the programs have been downloaded into the tester which has been set up to use its internal memory as the...

Page 87: ...following options are enabled batch number operator number or serial number the flow diagram shown on the left summarizes production mode operation Select Test Program to Run Fixture Compensation NO...

Page 88: ...m a list of programs available on the PC Server or in the ATi s own memory i e local programs entered by swiping a barcode or created directly from the front panel by selecting New program and pressin...

Page 89: ...ram options dialogue see chapter 3 or under program options in front panel program mode see chapter 6 Press Compensate or No Comp as required Note For fixture compensation see later in this chapter Pl...

Page 90: ...the batch has been tested then press Finish 2 5 2 Error Messages Server Program Store Error Possible Causes Faulty cable The cable from the AT Server port to the Server PC has a broken wire or is not...

Page 91: ...are and connection to the Server PC are working correctly the following error screen may appear Cause The directory set up in the Server application as the location of test programs does not contain a...

Page 92: ...ack to the top level display 2 5 3 Indications Displayed While Tests Are Running Where 1 represents the position of the test within the test program The operator may terminate the measurements at any...

Page 93: ...e LCD indicate the pass or fail result of the previously tested transformer so that the operator may place it in the appropriate Pass or Fail bin Results are also sent to the Server at this time if so...

Page 94: ...are reset when the test batch number is changed or a new test program is run If the STOP softkey is pressed or the STOP input of the remote port is held low the ATi will immediately stop testing STOP...

Page 95: ...g chapter of this user manual test programs may be created with any of the following three options enabled or disabled Operator name Batch number Serial number In each case if an option is enabled the...

Page 96: ...VOLTECH ATI USER MANUAL When running programs with any of the above options enabled there will be additional displays depending on which options are enabled after the Fit the Fixture display and befo...

Page 97: ...arizes the possibilities Top level Display Select Programs Soft key Select Test Program to Run Fit and Compensate Fixture RUN FINISH Menu New Batch New Operator Re compensate FINISH RUN Enter Operator...

Page 98: ...GETTING STARTED PAGE 2 64 VOLTECH ATI USER MANUAL Additional displays after entering the part number...

Page 99: ...r the Enter softkey Cursor softkeys appear in context and may be used with the Delete softkey to correct mistakes Serial Number Entry After the First Transformer When the serial number option is enabl...

Page 100: ...y characters A is a non numeric character and nnnn is a field of all numeric characters Both xxx and nnnn can be of any length provided that the total serial number is no more than 20 characters When...

Page 101: ...rely return you to the Enter the serial number display Re inputting the Options When options are enabled the RUN FINISH display allows access to additional softkeys that enable you to change the batch...

Page 102: ...GETTING STARTED PAGE 2 68 VOLTECH ATI USER MANUAL...

Page 103: ...y similar to the following will be seen This display shows 1 Part name number 2 Failing test number and test mnemonic 3 Graphical qualification of the failure showing the value measured with respect t...

Page 104: ...er when the program option Send retry results to server is enabled and printed out when a results printing option is set After pressing the Continue softkey the remaining tests in the program will be...

Page 105: ...lar to the following The main difference between this and the Stop on fail display is that the reading on the fourth line will be continuously updated allowing adjustments to be made to bring the test...

Page 106: ...in the program have been completed All transformers are capable of generating voltages much higher than the test voltage When making adjustments take care not to touch any transformer terminals the t...

Page 107: ...2 At the beginning of each day or work period 3 Whenever a new test program is loaded into the AT for execution Performing compensation on a fixture consists of making TWO measurements Short circuit S...

Page 108: ...pieces of wire across the relevant pins or all of the pins a spare blank bobbin or complete transformer Transformer Shorting Bobbin for S C compensation Put the short circuit bobbin into the fixture a...

Page 109: ...ents A typical S C compensation measurement might take 10 seconds or more during which time you will see a progress bar on the display Following one compensation and assuming you have performed S C fi...

Page 110: ...ry the compensation That for each node that is used the fixture short circuits power and sense together when there is no test piece in place One compensation has been successfully completed the compen...

Page 111: ...unctions To change the tester s set up options including setting up for Server operation and to download a group of programs from the Server PC to the tester s internal memory To access set up mode fr...

Page 112: ...point will return the tester to the top level display 2 9 1 Set up Softkey Pressing the softkey Set Up at the Set Up mode display shown above will reveal This display is the start of a list of option...

Page 113: ...y Response CLICK BEEP Beeper Volume CHANGE Display Contrast CHANGE Display Background LIGHT DARK Clock yyyy mmm dd hh mm Touch Pad Options L AND R L OR R L ONLY R ONLY OFF Pad Response CLICK BEEP OFF...

Page 114: ...display contrast To change the display background select LIGHT or DARK LIGHT has been chosen as the default setting as this will provide the clearest display across a broad range of contrast settings...

Page 115: ...replaced by others or modified in any way then the leads should be re calibrated To calibrate the leads press the softkey Change when BNC lead calibration is selected Note that you will need a nomina...

Page 116: ...rt circuit compensation Next connect the nominal 750 Ohm resistor between node 13 and 15 and press Continue Next the process is repeated using the BNC leads A short circuit compensation on the BNC lea...

Page 117: ...y brings up the following display Enter the new AT password via the instrument keypad using the Shift softkey to activate letter entry if necessary Press Enter to confirm the new password Resetting Te...

Page 118: ...ster is set up to use the INTERNAL program store and after you have entered the part name it will search for that name in the programs that are stored in its own non volatile RAM To store these progra...

Page 119: ...he name of the program group that you wish to use As with other names the group name can now be typed in from the keypad entered using a bar code reader connected to the bar code port of the ATi or se...

Page 120: ...s internal store and the Server PC may be disconnected These programs will be saved during power off and will only be overwritten by another group download Group Download Error Messages The following...

Page 121: ...Either the Server PC is not powered on or the Server application is not running b Possible Cause The directory set up in the Server application as the location of test programs does not contain a grou...

Page 122: ...le program may be stored in the AT using the Editor PC Once a program has been entered using the Editor and downloaded to the tester the tester will display Press Local Save and the program that has b...

Page 123: ...VOLTECH ATI USER MANUAL PAGE 3 1 3 PROGRAM EDITOR...

Page 124: ...PROGRAM EDITOR PAGE 3 2 VOLTECH ATI USER MANUAL...

Page 125: ...3 11 3 2 8 DELETING A CORE CONNECTION 3 11 3 2 9 ADDING A SCREEN CONNECTION 3 12 3 2 10 DELETING A SCREEN CONNECTION 3 12 3 3 CREATING THE TEST PROGRAM 3 13 3 3 1 SETTING THE PROGRAM OPTIONS 3 14 3 3...

Page 126: ...PROGRAM EDITOR PAGE 3 4 VOLTECH ATI USER MANUAL 3 5 1 FRONT PANEL ERROR CODES 3 43 3 5 2 EDITOR ERROR CODES 3 43 3 6 FIXTURE COMPENSATION SEE ALSO SECTION 2 8 3 46 3 7 PROGRAMMING HINTS AND TIPS 3 48...

Page 127: ...ing the test parameters to your needs Schematic diagrams of the transformer under test showing pin to node connections These form the basis of your test program Form fill in dialogue boxes to guide yo...

Page 128: ...the transformer pins has been entered into this schematic you can create test programs without having to refer to the tester s node numbers This section describes how to create a transformer schemati...

Page 129: ...button to place the winding 3 Name the winding terminals 2 When the winding is placed a dialogue box appears prompting you to name both of the winding s two terminals 4 You may move the cursor focus...

Page 130: ...change a connection simply use the right button to pick it up and move it to either another test node or to another transformer terminal To delete a connection again use the right mouse button to pic...

Page 131: ...on the chosen winding A fill in dialogue box will appear Each fill in box will contain the current names of the winding terminals You may change a name by 1 Selecting the appropriate terminal box with...

Page 132: ...side of the schematic as the winding that requires the additional terminal Upon clicking the left mouse button a form fill in dialogue box will appear on the screen with prompts to insert the termina...

Page 133: ...terminal that are present Note that ALL tests containing the deleted terminals will also be DELETED 3 2 7 ADDING A CORE CONNECTION To add a core connection Choose Add Core Connection from the Schemat...

Page 134: ...ic You may now add a screen to node connection 3 2 10 DELETING A SCREEN CONNECTION To delete a screen connection 1 Select the connection you wish to delete by pointing at it with the 8 ouse prompt and...

Page 135: ...ating the test program with the AT Series Editor By the end of this section you will be able to Set up the program options Add a test to the program Insert a test in the program Modify an existing tes...

Page 136: ...OPTIONS Overview After you have created the program schematic and before starting to insert any tests in the program you should set up which program options you would like to use From the top level me...

Page 137: ...erator will be prompted to enter a batch number which will be attached to the test results Serial Numbering During program execution the operator will be prompted to enter a serial number for each tra...

Page 138: ...ne limit will cause a warning to be displayed on the Server For further details see the AT Server section of this manual AQL No of Parts This is the number of failures in the batch at which a warning...

Page 139: ...urce This option is applicable to the AT3600 only When you have selected all the required options click on the OK button to return to the Top Level menu Stop on Fail With this function enabled the tes...

Page 140: ...transformer at the earliest opportunity then press the ABORT softkey to terminate this program run and return to the RUN FINISH display from where you can start the program again for the next transfor...

Page 141: ...ion process and yield Notes 1 The third line showing the graphical comparison of the measured value and user programmable limits has a logarithmic scale The measured value may be represented by either...

Page 142: ...on Schematic then Edit in the top level menu Bottom Left The Program Window This is the list of tests that currently make up the test program Normally for a new program this window would initially be...

Page 143: ...a test use the mouse to select the test you require from the Available Tests list and double click on that test with the left button This will open the dialogue box particular to that test You simply...

Page 144: ...s procedure for modifying an existing program if you needed to append further tests at the end However if you wish to add an extra test somewhere in the middle of an existing program a different proce...

Page 145: ...ar select Program Insert Test In this example a Turns Ratio test will be inserted before the Inductance test 3 in the Program You will now see the dialogue box for the test you wish to insert 4 Enter...

Page 146: ...ome tests need to be modified a typical example being that you need to change the test limits With the Editor software modifying a test is very simple 1 In the Program list window double click with th...

Page 147: ...e left mouse button to highlight the test you wish to delete NOTE Take care to correctly select the test to be deleted as the Editor software will permanently delete the test 2 From the top level menu...

Page 148: ...the normal case The LS Winding Inductance series circuit test is more typical requiring the test parameters Signal and Frequency to be specified For many tests including the LS test you may enter the...

Page 149: ...rmined by the tester will be entered as a current Note that not all tests allow the test parameters to be chosen by the tester The programming details for each test in section 7 Tests and Test Conditi...

Page 150: ...PROGRAM EDITOR PAGE 3 28 VOLTECH ATI USER MANUAL The corresponding dialogue boxes are as follows limits Minimum and maximum limits...

Page 151: ...PROGRAM EDITOR VOLTECH ATI USER MANUAL PAGE 3 29 Minimum limit only Maximum limit only...

Page 152: ...ation between windings has no upper limit to its resistance To choose which type of limit you wish to use simply use the mouse to click on one of the buttons or After you have entered the limits in on...

Page 153: ...on to select the test conditions The programming details for each test in section 7 Tests and Test Conditions specify which tests allow the Measure button to enter the test parameter values 3 4 1 HARD...

Page 154: ...tially select the LS test in the normal way by double clicking with the mouse in the Available Tests list In the LS test dialogue box Enter the terminal names in the normal way Select the integration...

Page 155: ...one where compensation can be applied you will then see the following message Disable Compensation will stop this dialogue being displayed for subsequent presses of the Measure button for this program...

Page 156: ...on In this case the LS test requires both short circuit and open circuit compensation The following dialogue box will be shown first Fit the required short circuit header and click on OK The Editor wi...

Page 157: ...ER MANUAL PAGE 3 35 Remember to remove the short circuit header before performing short circuit compensation You may still select No on either of the above dialogues to perform just one type of fixtur...

Page 158: ...K button the tester will be commanded to make its measurements and you will see the following message When the measurements have finished the display will return to the dialogue box for the LS test wi...

Page 159: ...1 at the specified frequency and you have specified a 5V test signal then the AT would have to supply 5V 0 1 50 Amps You will then see a warning similar to this Check first that the winding is properl...

Page 160: ...a value only for parameters that you have not specified In general all tests have restrictions on which test parameters may be or have to be specified and which may be chosen automatically In the cas...

Page 161: ...rd Before you attempt to run the program 2 Make sure you have connected your tester s Auxiliary Port on the rear panel to a suitable COM port on your PC This may be COM2 if your mouse is already using...

Page 162: ...hed you will see a dialogue box containing the results of the test From the results you should be able to see any tests where there may be problems Return to the Program Editor to make the necessary c...

Page 163: ...The resulting dialogue see below allows the AT password to be set If a password is set this password will need to be entered into the AT whenever a test program is changed or deleted Note that this E...

Page 164: ...has gone wrong Each error code translates into an effect a short description of the fault such as a current or voltage overload that can help the operator diagnose the cause of the problem The DSP st...

Page 165: ...e following display will show the two status error codes the first four digits being the DSP status error code and the second single or two digit number in parentheses being the reason for DSP status...

Page 166: ...n to the core of the transformer The following table gives the error codes that can appear when using the run facility in the Editor or when viewing on line results with the Server These error codes c...

Page 167: ...t tests only test current exceeded pre programmed limit AT3600 only x2xx Voltage present Vpres did not go away in time something on the fixture is staying charged AT3600 only 4xx The test has failed d...

Page 168: ...d earlier in this chapter so that the tester is connected and the program is downloaded Then from the top level menu bar select Tester Compensate Fixture Most programs will contain at least one test w...

Page 169: ...rogram will be stored inside the tester Any subsequent measurements started as described above by clicking on Tester Run Program will return compensated results to the Editor If you are not sure wheth...

Page 170: ...then some tests may be inadvertently deleted Examples where this may happen are deleting a winding or a terminal and renaming a terminal 2 Use the recommended order for the tests in the program The a...

Page 171: ...re testing the turns ratio between windings where the actual number of turns on one of the windings is only 10 specify limits of 5 which is equivalent to half a turn 4 Make use of the Measure button F...

Page 172: ...PROGRAM EDITOR PAGE 3 50 VOLTECH ATI USER MANUAL...

Page 173: ...VOLTECH ATI USER MANUAL PAGE 4 1 4 AT SERIES SERVER...

Page 174: ...AT SERIES SERVER PAGE 4 2 VOLTECH ATI USER MANUAL...

Page 175: ...10 4 3 TEST RESULTS HANDLING 4 11 4 3 1 Receiving Test Results 4 11 4 3 2 Result Display and Analysis 4 13 4 3 3 Simple On line Monitoring 4 13 4 3 4 Batch Statistics On line Analysis 4 14 4 3 5 On li...

Page 176: ...AT SERIES SERVER PAGE 4 4 VOLTECH ATI USER MANUAL...

Page 177: ...lled up from the Server sent to and then executed within the tester The features of the Server include MS Windows application style dialogues and tools Storage of all previously created test programs...

Page 178: ...ith a single tester and two PCs Before program requests or uploads may be completed the tester must be configured for Server mode See chapter 2 You may copy program files directly into the program dir...

Page 179: ...ram you will need to know its part name Select FILE PART and then OPEN from the menu bar You may select the part to open from the list displayed or change the path and drive to search for other parts...

Page 180: ...ll now be saved with the new part name as specified IMPORTANT When using the SAVE AS function you must be aware that it is not a RENAME function The previous copy of the test program with the original...

Page 181: ...he part to be deleted and press the DELETE button You will then be prompted to enter the password as defined when installing the Server software to allow the part to be deleted The program will then b...

Page 182: ...ost after power down The following dialogue is used to configure groups and may be located under the Setup menu in the Server Double clicking on any part in the left hand list will add it to the right...

Page 183: ...r tester results as well as acting as the central Server All results sent by one tester s channel during one day are collected together and formed into one large file This file is known as the batch r...

Page 184: ...imum Maximum R 1 10 44 20 Pass 59 73 6 776850E 01 Pass 3 3 223899E 00 P 2 10 44 23 Pass 59 73 6 776832E 01 Pass 3 3 110549E 00 P 3 10 44 24 Pass 59 73 6 776363E 01 Pass 3 3 125640E 00 P 4 10 44 26 Pas...

Page 185: ...T Series Tester connection is opened using the Setup Communication menu an accompanying result monitoring window will be created One result monitoring window will be present for each open channel When...

Page 186: ...to save results to a database For this feature to operate a licence for use must first be obtained from your Voltech supplier All results formats can be saved simultaneously Basic statistics displays...

Page 187: ...the AQL Acceptable Quality Level of the transformer The number of re tries that have been attempted the percentage of failures so far and the number of transformers that failed out of the last 10 test...

Page 188: ...ich a warning will be displayed on the Server Note that this AQL is only applied after sufficient parts have been tested to make the percentage meaningful When setting AQL of Parts to be 1 for example...

Page 189: ...ded by specialist software packages such as those available for SPC Statistical Process Control One example of this is to monitor in real time the trend in a winding resistance to identify a defective...

Page 190: ...ngs the name of a provider the name and location of the database and a valid database user name and password if required You may need to consult with the database or network administrator to obtain th...

Page 191: ...hat will provide the connection to the type of database that you are using Several different types of provider are installed along with the Server software others may be available if you have a databa...

Page 192: ...ssible to connect to ODBC compliant databases including Microsoft Access using the Microsoft OLE DB Provider for ODBC Drivers Click on Next when you have chosen the correct provider Select the databas...

Page 193: ...ERIES SERVER VOLTECH ATI USER MANUAL PAGE 4 21 When you click on Test Connection you should see something similar to Next click on OK of the Test connection succeeded dialogue and select the Advanced...

Page 194: ...AT SERIES SERVER PAGE 4 22 VOLTECH ATI USER MANUAL Check that the Access permissions for the database are as required Share Deny None is the default and is usually the most suitable setting...

Page 195: ...d and adjusted if necessary Click on OK to complete the setting of the data link properties A typical AT Server advanced database results dialogue would be Click on OK to return to the results dialogu...

Page 196: ...not already exist and stores data within the tables using the structure defined here The tables store all the information that is available concerning the results including time date limits operator...

Page 197: ...future development Result Number Single Actual test result TestStatus Text 5 DSP Status for test PassFail Text 5 PASS FAIL Individual test pass or fail result Table tblVoltechRunID Field Format Notes...

Page 198: ...inLimit Number Single Minimum limit for test see MaxLimit Number Single Maximum limit for test see Notes CheckType NONE If there are no Min or Max limits MinLimit 0 and MaxLimit 0 CheckType MIN If the...

Page 199: ...third party analysis software to the same database for live on line or offline data analysis The example reports presented here were created using PQ Systems ChartRunner but many other charting and a...

Page 200: ...AT SERIES SERVER PAGE 4 28 VOLTECH ATI USER MANUAL Resistance Distribution Analysis Overall Pass Fail Analysis...

Page 201: ...ion The chart will show the trend of inductance measurements over time an Individuals chart type See the ChartRunner help system for how to set up control limits change the display appearance or set u...

Page 202: ...on line analysis and the chart type Click on the Data Source tab to choose the results database Under the Data Definition tab Select the table of the database that holds the data that you want to char...

Page 203: ...osen and the column Result flagged as a measurement To do this click on the Treat as column of the Result row and select Measurement from the drop down list Next click on Filtering and filter the data...

Page 204: ...MANUAL Next click on the Limits tab and enter appropriate specification limits that will appear on the chart The ChartRunner software can automatically select appropriate control limits from the data...

Page 205: ...including chart titles and size can be altered by selecting the Titles and Misc tabs Click on OK when finished Double click on the chart definition to display the chart Please refer to the help system...

Page 206: ...com or any of their regional offices United States PQ Systems Inc Corporate Headquarters Toll free 1 800 777 3020 Phone 937 885 2255 E mail sales pqsystems com Europe PQ Systems Europe Ltd Phone 44 1...

Page 207: ...t programs OLE is the analysis and control method preferred by users who wish to operate the AT under software control OLE is already configured ready to go within the Server application Your client a...

Page 208: ...strings as GetVariant Result Only function specific responses and return values are shown NewDataAvailable LPCSTR ComPort Returns TRUE or FALSE Boolean 1 or 0 as variant depending on whether new data...

Page 209: ...id AT serial number found GetTransformerSerialNo LPCSTR ComPort This call returns the transformer serial number on success or a failure string NO SERIAL NO no valid transformer serial number found Get...

Page 210: ...nation of the maximum value for TestNumber in other functions GetMinLimit LPCSTR ComPort short TestNumber Float value giving the minimum limit for the test TestNumber NO LIMIT This test has no minimum...

Page 211: ...successful Compensation all OK Fixture Compensation fail ExtraString Compensation has failed GetUnitType LPCSTR ComPort Returns AT3600 AT1600 or ATi depending on the type of instrument connected to t...

Page 212: ...d when command is first sent to server and every subsequent time it is sent until loading finishes LOADED The program has been successfully loaded this will continue to be returned and the program wil...

Page 213: ...ts to Server is set to On Transfer the program to the directory being used by the server for storing programs Ensure that the server program is running and that the COM Port to be used has been enable...

Page 214: ...Dim objServerResult As Object Dim vntResult 1 To 99 As Variant Set objServerResult CreateObject Server Results nTest 3 nNumRuns 3 sComPort COM2 Dummy read to clear any previous result vntResult nTest...

Page 215: ...OK button When you have pressed the RUN softkey and the first result has been read the message box will disappear and you will then see the first result entered into cell F3 of the spreadsheet Contin...

Page 216: ...n error message The line Set objServerResult CreateObject Server Results creates the server Results automation object within Visual Basic When trying to read the result with Do vntResult nTest objServ...

Page 217: ...sing the NewDataAvailable function also means that checking for INVALID RESULT NUMBER and NO RESULT return values is no longer necessary 4 3 9 OFF LINE ANALYSIS If you have no requirement for real tim...

Page 218: ...spreadsheet used in the example is Microsoft Excel 97 From the Excel top level menu bar select File Open Excel will then bring up the Open File dialogue box Select the results file you wish to view a...

Page 219: ...AT SERIES SERVER VOLTECH ATI USER MANUAL PAGE 4 47 Ensure that the De limited option is checked and click on Next to move to step two...

Page 220: ...TECH ATI USER MANUAL In the Delimiters section of this screen ensure that only the Comma option is checked Click on Next and proceed to step three Check that the Column Data Format option is checked a...

Page 221: ...of decimal places Using functions built into the spreadsheet the data obtained may now be used to create graphs and bar charts for a visual representation of your results As an example to produce a gr...

Page 222: ...the program storage CSV results storage or OLE features of the Server software The software must be registered however before you can use the database and basic batch statistics features The software...

Page 223: ...tallation Contact your Voltech supplier with the exact ID Code and you will be issued with a Key Code provided that the appropriate payment has been received A 30 day trial key code may be supplied FR...

Page 224: ...stination PC Take the ID code displayed in the new installation and enter it into the Transfer ID Code section of the dialogue of the licensed software as above on the old installation Take the Transf...

Page 225: ...VOLTECH ATI USER MANUAL PAGE 5 1 5 FIXTURES...

Page 226: ...FIXTURES PAGE 5 2 VOLTECH ATI USER MANUAL...

Page 227: ...FIXTURE SYSTEM SPECIFICATION 5 12 5 4 FIXTURE PARTS AVAILABLE FROM VOLTECH 5 13 5 4 1 Fixture Plate Voltech Part Number 91 184 5 15 5 4 2 Custom Fixture Kit Voltech Part Number 91 185 5 16 5 4 3 Sock...

Page 228: ...FIXTURES PAGE 5 4 VOLTECH ATI USER MANUAL...

Page 229: ...es are based on a fixture board containing connector pins They provide the interface to the tester via the tester node pins allowing transformers to be quickly inserted and removed in a reliable manne...

Page 230: ...rts to help you The following basic building blocks are available A Fixture Plate Designed for mounting existing fixtures to an AT Series Tester Comprises Base plate including contacts with cover Test...

Page 231: ...ockets are wired to the 40 contacts which align with the tester s 40 nodes This complete fixture may be used for convenient wiring to existing fixtures or as a means of connecting flying leads and cli...

Page 232: ...ease the fitting and wiring of larger test sockets and posts for flying leads 2 Cover Plate This mounting plate allows convenient attachment of various sockets and connectors Please note that this pla...

Page 233: ...suitable probes parts with surface mounting pin blade or flying lead connections can be connected The fixture system is supplied as detailed in the comprehensive user guide to fixture construction The...

Page 234: ...adjustable in height and in spring pressure Voltech Part No 91 187 4 Guides 12 adjustable guides are supplied to locate the test piece in the fixture quickly and accurately 5 Drilling Tools 5 differen...

Page 235: ...pairs of red and black 4mm shrouded safety sockets mounted and wired into a blank fixture A variety of clips and posts can be used to enable connection to the component under test When testing larger...

Page 236: ...s Surface mount Pin connection Blade connection Flying leads Pitches of 1 27mm 2 00mm 2 50mm 2 54mm 0 1 3 81mm 0 15 There are some application limitations to the above for example the minimum pitch of...

Page 237: ...nents parts and kits are available from your Voltech supplier to help you assemble your own fixtures MORE INFORMATION A comprehensive guide to the construction of your own custom fixtures is supplied...

Page 238: ...FIXTURES PAGE 5 14 VOLTECH ATI USER MANUAL Example probe box drilled for multiple RM bobbin types M Series Kelvin Fixture...

Page 239: ...IXTURE PLATE VOLTECH PART NUMBER 91 184 Designed for mounting existing fixtures to an AT series tester the fixture plate comprises Item 1 Base plate including contact pins with cover Item 2 Test piece...

Page 240: ...over Item 2 Test piece interface plate Item 3 Probe housing box Item 4 Bezel Item 5 Guides 12 off Fixings for above 5 4 3 SOCKET FIXTURE VOLTECH PART NUMBER 91 186 A fixture board fitted with 40 4mm s...

Page 241: ...black leads terminated in 4mm plugs The connection lead set consists of 10 Spring loaded connection posts 10 Kelvin crocodile clips 10 Non Kelvin crocodile clips 10 Fine non Kelvin clips 5 4 5 CLAMP V...

Page 242: ...within its 1 tolerance at dc In a standard 2 terminal measurement there are TWO sources of error The resistance of the connecting leads The resistance of the contact between the connection and the le...

Page 243: ...out of tolerance when it is really exactly 1 000 Notice also that the voltage applied to the resistor is NOT exactly 100mV because of the voltage drops across RL and RC In a Kelvin or 4 terminal conne...

Page 244: ...1 000 The correct result In general a true Kelvin connection provides the most accurate means of sensing the voltage across any impedance AC or DC and hence helps to produce an accurate measurement o...

Page 245: ...mponent under test In such cases separate power and sense leads are used up to the base of the terminal and the length of common lead from the junction of the power and sense leads through the termina...

Page 246: ...ollowing diagram indicates how to identify the node terminal function POWER terminals are all on the outside of the fixture area SENSE terminals are all on the inside of the fixture area The BNC to cl...

Page 247: ...CH ATI USER MANUAL PAGE 5 23 When Kelvin connections are not possible because of space limitations use a semi Kelvin connection Below are two examples of Kelvin connections Clips supplied with BNC lea...

Page 248: ...FIXTURES PAGE 5 24 VOLTECH ATI USER MANUAL...

Page 249: ...VOLTECH ATI USER MANUAL PAGE 6 1 6 FRONT PANEL MODES...

Page 250: ...FRONT PANEL MODES PAGE 6 2 VOLTECH ATI USER MANUAL...

Page 251: ...LE IN THE LCR MODES 6 17 6 3 LCR MENUS 6 19 6 3 1 LCR BNC Menu 6 19 6 3 2 LCR FIX Menu 6 20 6 3 3 LCR Mode Settings 6 21 6 4 COMPENSATION 6 29 6 4 1 Performing Compensation 6 31 6 4 2 Compensation Fai...

Page 252: ...FRONT PANEL MODES PAGE 6 4 VOLTECH ATI USER MANUAL...

Page 253: ...ate 4 terminal measurements Quick and easy connection eliminates contact resistance errors Intuitive softkey control sets up measurements in a few key presses Ready to test in a few seconds Ideal for...

Page 254: ...ingle winding or component LCR FIX mode uses nodes 13 14 15 and 16 of the fixture bay to perform LCR type measurements plus Turns Ratio Leakage Inductance and Interwinding Capacitance on two windings...

Page 255: ...mH The second measurement is that of the parameter selected by the 3rd softkey In this case Q the quality factor is 1 4427 The next line shows the LCR mode that you are using This may be either BNC mo...

Page 256: ...equency because the ATi always attempts to trim its output voltage across the part to be equal to the desired or program voltage see below If the impedance of the part is very low the ATi might not be...

Page 257: ...nsure these nodes 18 and 20 are clear before using the BNC terminals The top softkey number 1 allows you to move through the visible options Press softkey 1 and you will see Lp and Q The options for t...

Page 258: ...DES PAGE 6 10 VOLTECH ATI USER MANUAL Lp and D More tests are available by pressing More 1 3 softkey 2 Z and Please see the sections following LCR FIX for details of how to use the front panel LCR mod...

Page 259: ...begins to make measurements Ensure that DC Bias current is switched off before connecting and disconnecting component under test The ATi is making measurements on nodes 13 and 15 the primary and node...

Page 260: ...dary nodes 14 16 press softkey 5 Pri Sec For measurements of TR turns ratio and TRL turns ratio by inductance softkey 5 toggles the display of measured test conditions It does NOT alter the designatio...

Page 261: ...00 Np Ns 1000 365 The number of primary turns entered will be retained by the tester until the More softkey is selected i e if you exit LCR FIX and re enter or if you select TRL LL or C the value for...

Page 262: ...e should be taken to avoid accidental or unexpected electrical shocks For this reason the high voltage insulation resistance source must be turned on by pressing softkey 3 every time this screen is di...

Page 263: ...ATI USER MANUAL PAGE 6 15 Settings for the voltage integration can be changed by pressing softkey 4 Settings A Print option is included in this menu Press softkey 1 IR Voltage And then press Enter V...

Page 264: ...key 5 CANCEL to discard changes and return to the previous menu Press softkey 4 DELETE to correct mistakes Insulation resistance set ups cannot be stored in memory but the voltage and used nodes are a...

Page 265: ...Cs D Q Rs Cp D Q Rp More 2 4 Softkey 1 Softkey 3 Z Q D R X More 3 4 Softkey 1 Softkey 3 Rdc IR Off On More 4 4 LCR FIX only Softkey 1 Softkey 3 TR POL PHAS TRL POL LL C The active display combination...

Page 266: ...acitance Series Circuit Cs Farads F Capacitance Parallel Circuit Cp Farads F Interwinding Capacitance C Farads F Quality Factor Q Dissipation Factor or tan D AC Impedance Magnitude of Complex Impedanc...

Page 267: ...BNC and LCR FIX modes 6 3 1 LCR BNC MENU LCR BNC LCR FIX Execute Program Self Test R More 2 3 Q D Settings EXIT Signal Integration Compensate Print OK Enter f Enter V Enter I Enter IBias OK Lp Cs Cp M...

Page 268: ...Integration Compensate Print OK Enter f Enter V Enter I Enter IBias Sec OK Lp Cs Cp More 1 4 D Rs Settings Sec EXIT Ls Q Z IR More 3 4 Settings Sec EXIT Rdc Pri One All One All OK Short Open Fix Auto...

Page 269: ...of parts are tested at exactly the same conditions The LCR mode settings screen allows you to Enter fixed voltage and frequency test conditions Compensate for the effect of stray inductance and capaci...

Page 270: ...FRONT PANEL MODES PAGE 6 22 VOLTECH ATI USER MANUAL Press the Settings softkey to reveal the settings menu Press the Signal softkey to show the signal settings...

Page 271: ...V and ENTER Ibias These keys allow you to enter fixed values of voltage frequency and DC bias current using the 12 key numeric keypad The combination of AUTO f and a fixed value of voltage is NOT all...

Page 272: ...lly choose a voltage or frequency Remember that the combination of AUTO f and a fixed voltage is not allowed Press Cancel at any time to discard any changes that you have made and to return to the pre...

Page 273: ...erse video Press 5 with the Shift key in reverse to enter the multiplier k x1 000 Press 6 with the Shift key in reverse to enter the mulitiplier M x1 000 000 Press softkey 4 Delete to correct mistakes...

Page 274: ...ents have been made with these new conditions measured values cannot be displayed on bottom line Having entered fixed values of voltage frequency and Ibias as required and pressed softkey 6 OK the scr...

Page 275: ...tkey on the settings menu to reveal the integration options The integration level controls details of the measurement method including the number of readings that are averaged together to provide the...

Page 276: ...l be output to the printer port of the ATi Measurements can be recorded on any standard printer with a conventional PC type parallel centronics input The output is formatted using standard codes so th...

Page 277: ...tech recommends that all reference measurements should be made after compensation The ATi is fully compensated at the factory for a broad range of frequencies and compensation is often not required wh...

Page 278: ...Transformer Shorting bobbin for compensation To compensate for the effect of stray capacitance the ATi must make a measurement with no winding s in place This is called open circuit compensation The...

Page 279: ...any fixed frequency Choosing One sets up the ATi to perform compensation measurements at the chosen frequency only and is the preferred choice Choosing All will set up the tester to re compensate at a...

Page 280: ...rs that can move in a position as close as possible to that which will be used when making measurements Press softkey 5 Start begin the compensation process Press softkey 6 OK to use any compensation...

Page 281: ...us screen Once both short and open circuit compensation have been performed succesfully the words comp req will be removed from the compensation screen and from the main LCR or Rdc IR measurement scre...

Page 282: ...either short or open circuit and repeat the compensation measurement In the unlikely event that compensation continues to fail you can use the ATi without compensation comp req will be shown on the di...

Page 283: ...terminals of the part and if necessary trimming the test source to establish exactly the required conditions at the part This means that the ATi will automatically compensate for lead resistance and i...

Page 284: ...program voltage For example if the AC impedance of the winding under test is only 0 1 at the specified frequency and you have specified a 5V test signal then the AT would have to supply 5V 0 1 50 Amp...

Page 285: ...erload adjust V or f If you see either of the above error messages either decrease the test voltage or increase the test frequency until an acceptable condition is reached You could of course choose A...

Page 286: ...displayed If you make a mistake choosing test parameters the ATi will sound a short beep and return to the previous screen condition Examples are attempting to enter AUTO frequency when a fixed voltag...

Page 287: ...evel menu choose softkey 1 Programs The resulting programs screen displays a list of programs available in the local or Server program store depending upon the general program store set up of the test...

Page 288: ...R MANUAL 6 6 1 CREATING A NEW TEST PROGRAM In order to create a new test program select New program using the arrow softkey and choose Set up softkey 2 The next screen shown is the test selection scre...

Page 289: ...standard measure mode see below Use the arrow key softkey 2 to select a test to be set up For example scroll down one line to R Winding Resistance and press Enter to set up a winding resistance test o...

Page 290: ...xample to set up limits scroll to the Limit type line and press softkey 3 three times to enter both minimum and maximum limit values Use the down arrow key again to scroll to the Minimum limit and Max...

Page 291: ...nodes Choose Next At the following display see below you may choose to Measure if the test that is being set up supports this functionality Pressing Measure will update the limits as well as signal an...

Page 292: ...ers that have been entered in a table format see below Note The OK softkey does not allow you to exit the test set up screen until all required test parameters have been entered 6 6 2 SETTING UP TEST...

Page 293: ...own description Note that on this screen the shift key is not available for character entry On the program options screen the buttons on the instrument keypad will consecutively scroll you through bo...

Page 294: ...OK to return to the program test selection screen and OK again to confirm your set up Note that if a password has been set the AT requests the password to be entered before the program can be saved E...

Page 295: ...NNING A TEST PROGRAM To run the program use the arrow keys to select it and choose the Run softkey This will run the test program that has been created from the front panel of the instrument in exactl...

Page 296: ...dit test programs that are stored in the AT Server or the AT s local program store save new or modified programs or delete test programs directly from the front panel To help protect existing test pro...

Page 297: ...AT password may be set up directly from the main set up menu of the ATi From the top level instrument menu choose Set Up At the set up screen choose softkey 2 Set Up Use the down arrow key to scroll t...

Page 298: ...set the existing password must be entered at the screen below before a new internal password can be set The internal AT password protection may be removed by setting the password to a blank password i...

Page 299: ...VOLTECH ATI USER MANUAL PAGE 7 1 7 TESTS AND TEST CONDITIONS...

Page 300: ...l Circuit 7 38 7 1 10 L2 Inductance Match 7 42 7 1 11 LL LLO Leakage Inductance and Leakage Inductance with Offset 7 45 7 1 12 C Interwinding Capacitance Test Parallel Circuit 7 50 7 1 13 CS and CP Ca...

Page 301: ...Testing in Order to Trim a Component Value 7 111 7 1 29 OUT Control External Devices 7 113 7 1 30 LSBX Inductance with External Bias Series Circuit 7 116 7 1 31 LPBX Inductance with External Bias Para...

Page 302: ...y in its intended application it should be constructed in accordance with the designer s specification The test specification or ATi test program calls for various electrical parameters to be measured...

Page 303: ...e transformer LS Inductance Series Circuit As described above an inductance measurement will confirm that the correct number of turns has been wound and that the correct cores have been properly assem...

Page 304: ...oupled in the final application Check the main primary to secondary capacitance and between secondaries where insulation is important LL Leakage Inductance The leakage inductance is a measure of how g...

Page 305: ...etizing current test rather than inductance This test is available only on the Voltech AT3600 Hi Pot or Flash Testing Transformers are often used to provide safety isolation between the AC line and th...

Page 306: ...ro At test conditions where the frequency is low enough for problems with capacitive impedance to be negligible the phase angle will be positive and close to 90 degrees Therefore an ANGL test can be u...

Page 307: ...f turns right grade of correctly assembled core material L2 Inductance Match SMPS audio telecom Checks matching between windings LL LLO Leakage Inductance SMPS electronic ballasts Checks windings have...

Page 308: ...ents Adjusts transformer parameter to desired value during test OUT Output to User Port Performs external switching as part of the test program LSBX Inductance with External Bias Series Circuit Wound...

Page 309: ...VOLTECH ATI USER MANUAL PAGE 7 11 These tests require the use of one or more Voltech DC1000 Precision DC Bias Current Sources Contact your Voltech sales office for details...

Page 310: ...ance tests applied to each winding Used together with the Stop on Fail option CTY will allow you to re insert a transformer into the fixture without recording a FAIL or wasting further test time CTY i...

Page 311: ...nding resistance causes a voltage drop in the winding when current flows causing the output voltage to fall with increasing load Where Used A DC resistance test should be used to check each winding to...

Page 312: ...omatically according to the value specified as maximum in the test limits Maximum Resistance 0 1 1 10 100 1k 10k 10k Test Signal 400mA 200mA 100mA 30mA 3mA 300 A 8 0V Programming the Test Using the PC...

Page 313: ...inal value together with and percentage limits Minimum and maximum values A minimum value only A maximum value only Use the PC Editor s Measure button together with a sample part if you are unsure of...

Page 314: ...of windings is controlled and matched to a specified ratio The absolute value of the resistances may be of less importance to the performance of the transformer than the match between two resistances...

Page 315: ...for each of the two windings Programming the Test Using the PC Test Editor Select the integration time required Enter the terminal names between which the X resistance is to be measured Enter the term...

Page 316: ...tester Select OK The test specification will now be displayed in the program window Use the PC Editor s Measure button together with a sample part if you are unsure of how to choose the test condition...

Page 317: ...uction and dimensions of the core materials it may also vary with test conditions such as voltage and frequency The series and parallel inductance tests are used when testing signal pulse switched mod...

Page 318: ...y be assumed to behave linearly in the operating region and the inductance measured at a low level represents the inductance that will appear in use Also it can usually be assumed that the inductance...

Page 319: ...z 30KHz 10KHz 1KHz 100Hz 100Hz 50Hz 50Hz 50Hz 20Hz 10mV 30mV 50mV 100mV 100mV 100mV 300mV 1V 5V 5V 5V Ideal Test Conditions for Inductance Measurement The test conditions can also be determined automa...

Page 320: ...ANUAL Programming the Test Using the PC Test Editor Choose the integration period normally Medium and enter the terminals to be measured Use the PC Editor s Measure button together with a sample part...

Page 321: ...nce However at very high frequencies this is not so the capacitance dominates and inductance cannot be measured The self resonant frequency of the transformer is the changeover point between these two...

Page 322: ...ts will then agree See also the comments below on differences caused by the choice of equivalent circuit d Equivalent Circuit Inductance is always measured as part of a complex impedance the result be...

Page 323: ...ferrite cores can often be tested to a tolerance of 2 For un gapped cores the tolerance may have to be as much as 20 because of the core s manufacturing tolerance If the User Offset Enabled check box...

Page 324: ...an be represented on the equivalent circuit of a transformer by a resistance associated with the inductance of the winding For this equivalent circuit the Quality Factor Q is defined as Q Ls where 2 f...

Page 325: ...sing harmonic analysis the measured voltage is divided by the current to obtain a complex impedance from which the Quality Factor is obtained Choosing the Test Signal For optimum accuracy and performa...

Page 326: ...red Use the Editor s Measure button together with a sample part if you are unsure of how to choose the test conditions Choosing Test Limits The test limits can be A nominal value together with and per...

Page 327: ...ransformer may have a Q 20 A specially designed low loss transformer may have a Q 100 Because Q is a ratio of two impedances it has no units If the User Offset Enabled check box is checked a value can...

Page 328: ...losses in a capacitor It is analogous to Q for a transformer winding For this equivalent circuit the Dissipation Factor D is defined as D Rs where 2 f 1 Cs For a given capacitance the lower the equiva...

Page 329: ...current to obtain a complex impedance from which the Dissipation Factor is obtained Choosing the Test Signal For optimum accuracy and performance use the test conditions chosen for capacitance in a l...

Page 330: ...n period normally Medium and enter the terminals to be measured Use the Editor s Measure button together with a sample part if you are unsure of the nominal value Choosing Test Limits The test limits...

Page 331: ...al value Typically D is tested against a maximum value A typical film dielectric capacitor may have a D 0 01 Because D is a ratio of two impedances it has no units If the User Offset Enabled check box...

Page 332: ...e DC resistance Where Used The equivalent series or parallel resistance test is used to determine the AC equivalent resistances of a transformer As opposed to the DC resistance test R which uses DC vo...

Page 333: ...complex impedance from which the equivalent series and parallel resistances are obtained Choosing the Test Signal For optimum accuracy and performance use the test conditions chosen for inductance in...

Page 334: ...ed Use the PC Editor s Measure button together with a sample part if you are unsure of how to choose the test conditions Choosing Test Limits The test limits can be A nominal value together with and p...

Page 335: ...m etc when entering absolute values as limits Test limits should be set as close as possible to detect assembly faults If the User Offset Enabled check box is checked a value can be entered into the e...

Page 336: ...ansformers and chokes are designed to operate with a DC bias current flowing in a winding The inductance of a winding is determined by the number of turns and the construction and dimension of the cor...

Page 337: ...ted Generally it is not necessary to measure the inductance at the normal operating conditions of the transformer which could involve for example hundreds of volts or several amps of bias This is beca...

Page 338: ...rmally Medium and enter the terminals to be measured Do use the PC Editor s Measure button together with a sample part if you are unsure of how to choose the test conditions Choosing Test Limits The t...

Page 339: ...s should be set as close as possible to detect assembly faults A transformer made with a pair of gapped ferrite cores can often be tested to a tolerance of 2 For un gapped cores the tolerance may have...

Page 340: ...s consisting of the same number of turns and wound on the same core should have the same inductance value Where Used The inductance match test as opposed to an ordinary inductance measurement LS or LP...

Page 341: ...for match Choosing Test Conditions For optimum accuracy and performance use the test conditions shown in the inductance section of this chapter for each of the two windings The frequency will be comm...

Page 342: ...th a sample part if you are unsure of how to choose the test conditions Choosing the Test Limits The test limits are a nominal value together with and percentage limits Use the PC Editor s Measure but...

Page 343: ...ng between windings a short circuited transformer acts as if there is inductive impedance in series with the winding This impedance is known as the leakage inductance Low leakage inductance implies go...

Page 344: ...y specifications When measuring on certain components and particularly where the leakage inductance is below 1 H it may not be possible for the AT to properly compensate for all parasitic effects To c...

Page 345: ...10mH 100mH 1H 10H 300kHz 100kHz 30kHz 10kHz 1kHz 100Hz 100Hz 50Hz 50mA 20mA 10mA 5mA 5mA 5mA 1mA 500 A The test conditions can also be determined automatically by the ATi according to this table Note...

Page 346: ...more of the available terminals to the used section of the dialogue NOTE Because leakage inductance is measured with a secondary winding shorted out be careful to choose a test signal that will not c...

Page 347: ...the units of limits nH mH etc when entering absolute values as limits Note that more than one secondary can be short circuited at the same time by adding more of the available terminals to the used se...

Page 348: ...ent layers within a winding and between the outside layer of one winding and the inside layer of the next Although the capacitance is distributed across windings it is usually represented by a simple...

Page 349: ...T Series C test uses a parallel equivalent circuit for capacitance measurements CS series circuit capacitance is also available Choosing the Test Signal Recommended test conditions for different value...

Page 350: ...the integration period normally Medium and enter the terminals to be measured More than one terminal can be High and more than one terminal can be Low This is to allow testing of the complete primary...

Page 351: ...nsformers are not a problem and therefore capacitance is measured with as large a voltage as possible c Equivalent Circuit As with inductance capacitance is actually measured as a complex impedance an...

Page 352: ...minal value Remember to click on the units of limits pF nF etc when entering absolute values as limits Test limits should be set as close as possible to the nominal value in order to detect faults A t...

Page 353: ...e the capacitance of a wide range of components up to 1 milli farad Test Conditions To measure capacitance the tester applies an AC voltage across the designated terminals It then measures the voltage...

Page 354: ...tically by the ATi according to this table Voltage Specified Auto Auto Frequency Specified Specified Auto Note that a fixed voltage signal cannot be used with an Auto frequency CS and CP are currently...

Page 355: ...the next Although the capacitance is distributed it is usually represented by a simple equivalent circuit showing a single capacitance from one winding to the next Where Used The capacitance match te...

Page 356: ...the match of the two measured capacitances may be set in terms of the ratio between them e g 1 1 5 By adding further capacitance match tests to the program any number of inter winding capacitances ca...

Page 357: ...test conditions can also be determined automatically by the ATi according to this table Voltage Specified Auto Auto Frequency Specified Specified Auto Note that a fixed voltage signal cannot be used w...

Page 358: ...ing and another The secondary voltage may be in phase with the primary voltage or it may be anti phase depending on the winding and the termination of the windings Where Used The turns ratio test is u...

Page 359: ...ratio between two windings that should be accurately matched at 1 1 In this case it may be better to energize a third winding with a lower number of turns to ensure that any measurement errors apply...

Page 360: ...age Specified Auto Auto Frequency Specified Specified Auto Note that a fixed voltage signal cannot be used with an Auto frequency Programming the Test Using the PC Test Editor Choose the integration p...

Page 361: ...ease in the test frequency so that the current taken by the driven winding does not become too large but in general this frequency increase should be kept as small as possible to avoid problems caused...

Page 362: ...TESTS AND TEST CONDITIONS PAGE 7 64 VOLTECH ATI USER MANUAL In this way windings that should be matched are treated equally during the test...

Page 363: ...e the exact result of this conversion by clicking on limits in the Editor dialogue once the absolute limits have bee entered For example take a typical Switched Mode Power Supply transformer with wind...

Page 364: ...l result in equivalent limits of 19 and 21 Ideal for detecting errors of one turn or more What happens if I set absolute limits for both primary and secondary windings If you want to detect up to a te...

Page 365: ...l certainly detect a one turn error in the primary but because of the physical errors already described these limits may be too severe for a normal good part This is why a combination of inductance an...

Page 366: ...e number of turns on another winding is important for the proper operation of any transformer The turns ratio is often determined by calculating the ratio of the voltages produced across the windings...

Page 367: ...d frequency is applied to each winding in turn and the inductance of each is determined from the measured voltage and current using harmonic analysis The turns ratio is then calculated as the square r...

Page 368: ...signal and show the measured turns ratio Set percentage limits on this ratio and click OK you may select a polarity test before clicking OK Using the Auto Button to Set Secondary Voltage To do this yo...

Page 369: ...dary windings The optimum test conditions are chosen for an inductance value that is between the primary and secondary Lm Look up the recommended test signal for this inductance Enter the recommended...

Page 370: ...determine the test conditions according to the following table Voltage Specified Auto Auto Frequency Specified Specified Auto Note that a fixed voltage signal cannot be used with an Auto frequency Ch...

Page 371: ...ndary voltage may be in phase with the primary voltage or it may be anti phase depending on the winding and the termination of the windings Where Used The low voltage open circuit test is used to conf...

Page 372: ...d can be an AC or a DC voltage It is recommended that you choose the winding with the highest number of turns as the one to be energized Choosing Test Conditions The recommended test conditions depend...

Page 373: ...Auto Auto Frequency Specified Specified Auto Note that a fixed voltage signal cannot be used with an Auto frequency Programming the Test Using the PC Test Editor Choose the integration period normall...

Page 374: ...Test Limits The test limits can be A nominal value together with and percentage limits Minimum and maximum values A minimum value only A maximum value only Use the Editor s Measure button together wi...

Page 375: ...astic moulding on the bobbin The quality of the insulation can be assessed by applying a DC voltage across the insulation and measuring the resistance The voltage applied is usually greater than the v...

Page 376: ...ny windings as you wish The voltage and current are measured dividing the voltage by the current gives the insulation resistance Choosing Test Conditions The voltage should normally be set to just gre...

Page 377: ...capable of measuring insulation resistance values greater than 1G there is no need to specify so high a value to check that windings are isolated In many cases specifying a lower value will speed up...

Page 378: ...e ability of the transformer to reject unwanted noise signals that are common to both input terminals with respect to a common point An ideal transformer would have infinite CMRR Vout1 0 In practice d...

Page 379: ...wn This may be done automatically using the tester s OUT test The voltages Vout1 and Vout2 are measured whilst Vin is held constant The ratio of these two voltages reflects the transformer under test...

Page 380: ...but are not shown on the Editor schematic They are switched in circuit using an OUT test that must be inserted in the program before the GBAL test The relay patterns associated with inserting and rem...

Page 381: ...ter the required terminal names Terminals X the energized winding Terminals X the measured voltage VOUT1 Terminals Y the energized winding normally the same as the Terminals X energized winding Termin...

Page 382: ...osing Test Limits The test limits can be A nominal value together with and percentage limits Minimum and maximum values A minimum value only A maximum value only Use the PC Editor s Measure button tog...

Page 383: ...h respect to a common point An ideal transformer would have infinite CMRR Vout1 0 In practice differences in symmetry of transformer construction mean that input common mode signals appear as unwanted...

Page 384: ...ts above which the tester automatically configures First the test voltage Vin is applied as a common mode signal and the output voltage Vout1 is recorded and then the same Vin is applied as a normal i...

Page 385: ...s have deliberately not been included in the GBAL test dialogue for two reasons a it would make the dialogue too complicated and b it is not always necessary e g in the case of a fixture where the res...

Page 386: ...d to determine the test voltage Choosing Test Limits The test limits can be A nominal value together with and percentage limits Minimum and maximum values A minimum value only A maximum value only Use...

Page 387: ...Insertion Loss ILOS tests repeated at different frequencies The resistors shown are fitted to the test fixture and should be switched out of circuit when making other measurements such as resistance...

Page 388: ...the result of a RESP test is the referred ILOS result that is closest to the limit If any of the referred ILOS results are outside the specified limits the RESP result is the referred ILOS result that...

Page 389: ...f the Hi and Lo input terminals Enter the names of the Hi and Lo output terminals Add test frequencies as required by entering the frequency and clicking add There are normally at least 2 additional t...

Page 390: ...fitted to the fixture there is no need to enter their values here since the RESP test result is the difference between two ratios based on the same resistor values The resistor values cancel out in th...

Page 391: ...resistance losses mean that some power is always consumed by a transformer reducing the power available to the load from the theoretical maximum Where Used The insertion loss test is used to check the...

Page 392: ...Choosing Test Conditions The voltage and frequency are usually determined by the final application of the part under test Programming the Test Using the PC Test Editor Note that the PC Editor s Measur...

Page 393: ...nimum and maximum values A minimum value only A maximum value only Use the PC Editor s Measure button together with a sample part if you are unsure of the nominal value If the User Offset Enabled chec...

Page 394: ...he transformer Where Used The return loss test is used to check the impedance of audio and telecommunications transformers that are to be used with transmission lines of specified impedance The test h...

Page 395: ...ce Rm is the resistive portion of the measured device s impedance Xo is the reactive portion of the reference impedance Xm is the reactive portion of the measured device s impedance Choosing Test Cond...

Page 396: ...on line to which the transformer will be connected in its final application This is a complex impedance Z R jX where R is the real part of the impedance and X is the imaginary part A typical impedance...

Page 397: ...nal value together with and percentage limits Minimum and maximum values A minimum value only A maximum value only Use the PC Editor s Measure button together with a sample part if you are unsure of t...

Page 398: ...imaginary parts of the total impedance The impedance test checks the impedance of audio and telecommunications transformers that are to be used with transmission lines of specified impedance The test...

Page 399: ...as current By measuring both the applied AC voltage and the resulting AC current the total impedance is calculated Z is the magnitude of the complex impedance Z R 2 X 2 Choosing Test Conditions The vo...

Page 400: ...ominal value together with and percentage limits Minimum and maximum values A minimum value only A maximum value only Use the PC Editor s Measure button together with a sample part if you are unsure o...

Page 401: ...aginary parts of the total impedance Where Used The X test checks the reactance or imaginary part of the complex impedance of audio and telecommunications transformers that are to be used with transmi...

Page 402: ...voltage and the resulting current Using harmonic analysis the measured voltage is divided by the current to obtain a complex impedance from which X the imaginary part of the impedance is obtained X i...

Page 403: ...inary parts The phase angle of the complex impedance at a specified frequency is tan 1 X R Where R and X are the real and imaginary parts of the complex impedance See also the impedance test Z which m...

Page 404: ...easurement Conditions The AT Series Tester applies the specified AC voltage to the winding under test Using harmonic analysis the phase angle of the impedance is determined from the measured voltage a...

Page 405: ...Test Limits The test limits can be A nominal value together with and limits of up to 90 and 90 deg Minimum and maximum values Use the PC editor s Measure button together with a sample part if you are...

Page 406: ...here the turns ratio or open circuit voltage tests measure the amplitude of the voltages the PHAS test measures the phase difference between the two voltage waveforms Where Used The interwinding phase...

Page 407: ...cified AC voltage to one winding and measures the voltage produced across two windings one of which may be the energized winding The phase angle between the voltages is determined using harmonic analy...

Page 408: ...the angle between the primary and secondary terminals High and Low Terminal names Note that the PC Editor s Measure button CANNOT be used to determine the test voltage Choosing Test Limits The test li...

Page 409: ...in specified limits by adjusting a trimmable core Test Conditions A TRIM test may be used after any low voltage test on the tester If the desired parameter is outside the limits specified by that prev...

Page 410: ...RLS RLP LS LP LSP LSB Q C TR LL LLO TR L2 C2 GBAL LBAL ILOS RLOS and Z Choosing Test Conditions On selecting TRIM Trimming Adjustment from the Available Tests Window the following dialogue box will b...

Page 411: ...verything necessary to drive an external 12V DC relay is available Pin Signal Name Pin Signal Name 1 o p User Relay Drive 0 6 o p User Relay Drive 1 2 o p User Relay Drive 2 7 o p User Relay Drive 3 3...

Page 412: ...a test sequence like any other test The OUT test programmes any of the six available relay drives in any pattern desired The drives stay in the programmed state until another OUT test is performed or...

Page 413: ...given will remain in place until another OUT test is encountered Therefore if the settings are required for one part of the test program only two OUT tests will be required the first to turn the appr...

Page 414: ...f a transformer winding while an external bias current is flowing through it may be tested using series or parallel equivalent circuit models Initially the DC bias current is set up and allowed to sta...

Page 415: ...cified Specified Auto Bias Specified Specified Specified Specified 2 Select mouse click the button the integration time you require Medium is the default setting Long will give you more stable reading...

Page 416: ...a transformer winding while an external bias current is flowing through it may be tested using series or parallel equivalent circuit models Initially the DC bias current is set up and allowed to stab...

Page 417: ...cified Specified Auto Bias Specified Specified Specified Specified 2 Select mouse click the button the integration time you require Medium is the default setting Long will give you more stable reading...

Page 418: ...ias Current Sources Contact your Voltech sales office for details The Winding Impedance with External Bias test measures the impedance of a selected winding while applying a DC current from the DC1000...

Page 419: ...formation refer to the Test Program Editor of your AT manual 2 Select the integration time required Medium is the default setting Long will give more stable readings for tighter limits at the expense...

Page 420: ...CONDITIONS PAGE 7 122 VOLTECH ATI USER MANUAL Enter minimum and maximum values Enter just a minimum value Enter just a maximum value 5 Select OK The test specification will then be displayed in the p...

Page 421: ...series or parallel equivalent circuits will not necessarily be the same and care should be taken when choosing which equivalent circuit to use when testing Any practical inductor or capacitor will no...

Page 422: ...ificant Choose the SERIES equivalent circuit If the inductance is large 1 Henry and or the series resistance Rs is very small the parallel equivalent circuit is sometimes used For a CAPACITIVE IMPEDAN...

Page 423: ...fully automatic or user programmed following the guidelines given earlier in this chapter Measurements are usually made using the parallel equivalent circuit see the preceding section D Dissipation Fa...

Page 424: ...l LCR mode Use the test conditions determined for the C test ESR is a measure of equivalent AC resistance at a specified frequency and will be different to the expected DC resistance of contacts and l...

Page 425: ...VOLTECH ATI USER MANUAL PAGE 8 1 8 SPECIFICATIONS...

Page 426: ...SPECIFICATIONS PAGE 8 2 VOLTECH ATI USER MANUAL...

Page 427: ...s 8 12 8 2 6 TR Test 8 13 8 2 7 LVOC Test 8 14 8 2 8 TRL Test 8 15 8 2 9 IR Test 8 16 8 2 10 L2 C2 and R2 Tests 8 17 8 2 11 GBAL Test 8 18 8 2 12 LBAL ILOS and RESP Tests 8 19 8 2 13 RLOS Test 8 20 8...

Page 428: ...SPECIFICATIONS PAGE 8 4 VOLTECH ATI USER MANUAL 8 4 EMC COMPLIANCE 8 35 8 4 1 Declaration of Conformity 8 35 8 4 2 EMC Precautions 8 36...

Page 429: ...lity Factor 0 001 1000 1mV 5V 20Hz 3MHz 0 5 D Dissipation Factor tan 0 001 1000 1mV 5V 20Hz 3MHz 0 5 RLS Equivalent Series Resistance 10 10M 1mV 5V 20Hz 3MHz 0 05 RLP Equivalent Parallel Resistance 10...

Page 430: ...0dB 100dB 1mV 5V 20Hz 3MHz 0 5dB ILOS Insertion Loss 100dB 100dB 1mV 5V 20Hz 3MHz 0 5dB RESP Frequency Response 100dB 100dB 1mV 5V 20Hz 3MHz 1 0dB RLOS Return Loss 100dB 100dB 1mV 5V 20Hz 3MHz 0 2 Z I...

Page 431: ...A to 100mA 20Hz to 3MHz 0 2 Notes 1 AR basic relative accuracy full specifications follow Specification at 23 C 5 C after one hour warm up and long integration 2 Absolute maximum ratings for all test...

Page 432: ...AT is the total accuracy AR is the basic relative accuracy AC is the calibration accuracy AV is the correction for voltage level AI is the correction for current level The value of AR is given in the...

Page 433: ...r voltage level AI is the correction for current level AQ is the correction for Q factor AB is the correction for Bias The value of AR is given in the table in section 8 1 of this chapter The values o...

Page 434: ...ection for Q factor ASC is the correction factor for the short circuit impedance The value of AR is given in the table in section 8 1 of this chapter The values of the other factors are given below AC...

Page 435: ...l AI is the correction for current level AQ is the correction for Q factor AF is the correction for C The value of AR is given in the section 1 1 of this chapter The values of the other factors are gi...

Page 436: ...accuracy AI is the correction for current level AQD is the correction for Q or D factor The value of AR is given in the table in section 8 1 of this chapter The values of the other factors are given b...

Page 437: ...oltage level ASV is the correction for secondary voltage level AN is the correction for the turns ratio value The value of AR is given in the table in section 8 1 of this chapter The values of the oth...

Page 438: ...AT is the total accuracy AR is the basic relative accuracy AC is the calibration accuracy AV is the correction for voltage level The value of AR is given in the section 8 1 of this chapter The values...

Page 439: ...racy for the test is given as S P T A A A Where AT is the total accuracy AP is the accuracy of the primary winding measurement AS is the accuracy of the secondary winding measurement To determine the...

Page 440: ...AR is the basic relative accuracy AC is the calibration accuracy AI is the correction for current level AZ is the correction for impedance level The value of AR is given in the table in section 8 1 o...

Page 441: ...the two inductance capacitance or resistance measurements made and is given as Where AT is the total accuracy AX is the accuracy of the X measurement AY is the accuracy of the Y measurement Refer to...

Page 442: ...he value of AR is given in the table in section 8 1 of this chapter The values of the other factors are given below Where FM is the measurement frequency Hz VMX is the measured voltage for the X measu...

Page 443: ...for calibration AVI is the correction for the input voltage level AVO is the correction for the output voltage level The value of AR is given in the table in section 8 1 of this chapter The values of...

Page 444: ...the total accuracy dB AZ is the total accuracy for the Z test Z is VM IM ZR is 2 2 imag real Z Z Where VM is the measured voltage V IM is the measured current A Zreal is the real part of the referenc...

Page 445: ...ection for voltage level AI is the correction for current level The value of AR is given in the table in section 8 1 of this chapter The values of the other factors are given below Where FM is the mea...

Page 446: ...tion for voltage level AI is the correction for current level The value of AR is given in the table in section 8 1 of this chapter The values of the other factors are given below Where FM is the measu...

Page 447: ...voltage level AN is the correction for turns ratio The value of AR is given in the table in section 8 1 of this chapter The values of the other factors are given below Where FM is the measurement fre...

Page 448: ...ection for current level AQ is the correction for Q factor AB is the correction for Bias The value of AR is given in the table in section 8 1 of this chapter The values of the other factors are given...

Page 449: ...om left to right Barcode Server Printer Auxiliary Editor Remote User Ground All these ports may be susceptible to damage from static discharge Switch off and observe anti static precautions when makin...

Page 450: ...rd available from Farnell Electronic Components Hewlett Packard List No HBSW 8300 The HP Smart Wand reader connects directly to the barcode port no extra interfacing is required to configure the HBSW...

Page 451: ...ame Pin Signal name 1 Ground Earth 6 No connection 2 i p RX 7 0V 3 o p TX 8 No connection 4 i p CTS 5 o p RTS 25 No connection 8 3 3 AUXILIARY PORT RS232 interface for connection to a PC running the V...

Page 452: ...nnection 4 o p D2 14 o p AUTOFD 5 o p D3 15 i p ERROR 6 o p D4 16 o p INIT 7 o p D5 17 o p SLCTIN 8 o p D6 18 0V 9 o p D7 10 i p ACKNLG 25 0V Signals with a name starting with are active Lo Printing o...

Page 453: ...p BEEP 9 DO NOT USE 2 OV 10 o p PASS Bin1 3 12V 11 i p STOP 4 o p FAIL BinStrb 12 i p RUN 5 DO NOT USE 13 OV 6 OV 14 5V 7 o p BUSY Bin0 15 NOT USED 8 DO NOT USE Signals with a name starting with are a...

Page 454: ...ass and Fail They could for example be connected as status inputs to a robot controller or a bin selector Beep Output Pin 1 This is an active Hi output that copies the internal beeper It is configured...

Page 455: ...ble inputs The relay drives are switched on and off by certain optional tests e g the OUT test inserted into your test program This will enable you for example to switch a dummy load on to the seconda...

Page 456: ...User Relay Drive 1 2 o p User Relay Drive 2 7 o p User Relay Drive 3 3 o p User Relay Drive 4 8 o p User Relay Drive 5 4 i p User Input 0 9 i p User Input 1 5 o p 12V User Relay Drive Outputs pins 1 2...

Page 457: ...tage 5V Minimum input voltage 0V Minimum logic 1 input 4V Maximum logic 0 input 0 25V The zero reference voltage for these inputs is the 0V ground 4mm socket situated on the right of the ATi unit The...

Page 458: ...t 87 to 265V ac 47 or 440Hz 100VA Fuse 1 6AT Dielectric Strength 2kV ac 50Hz for 1 minute line input to case Storage Temperature 40 to 70 C Operating Temperature 0 to 40 C Humidity 10 to 90 RH non con...

Page 459: ...truments Ltd ATi BS EN 61010 1993 amendment A2 1995 The product herewith complies with the requirements of the EMC Directives 89 336 EEC and 92 31 EEC and the Low Voltage Directive 73 23 EEC BS EN 550...

Page 460: ...sceptible to Fast Electrical Transients on the power line and Electrostatic Discharges which can disrupt the operation of the unit In the event of these circumstances return the ATi to normal operatio...

Page 461: ...VOLTECH ATI USER MANUAL PAGE 9 1 9 WARRANTY AND SERVICE...

Page 462: ...WARRANTY AND SERVICE PAGE 9 2 ATI USER MANUAL...

Page 463: ...VOLTECH ATI USER MANUAL PAGE 9 3 Contents Warranty and Service 9 1 WARRANTY 9 5 9 2 LIMITATION OF WARRANTY 9 5 9 3 SERVICE AND CALIBRATION 9 6 9 4 OBTAINING SERVICE AND APPLICATIONS SUPPORT 9 6 9 5 F...

Page 464: ...WARRANTY AND SERVICE PAGE 9 4 ATI USER MANUAL...

Page 465: ...ive this benefit in any event where it is clear upon inspection that the cause of the failure is due to customer misuse Voltech will be the sole arbiter in this circumstance Voltech will pay all retur...

Page 466: ...AT series tester a calibration check should be carried out every 12 months Calibration is carried out using a special fixture as described in the next section The calibration can be performed by an a...

Page 467: ...ur local supplier or see the Voltech website at www voltech com for details Upgrade firmware is distributed in a file with the extension ABS Upgrade firmware is available at the Voltech website or fro...

Page 468: ...ditor will now check the boot code version already inside the AT If the boot code requires upgrading the Editor will prompt you with a warning that communications must not be disrupted during the 12 m...

Page 469: ...ure Parts from Voltech 5 13 Fixtures Description 5 6 Footswitch 2 9 FREQUENCY RESPONSE 7 89 Front Panel 2 7 Hints and Tips 3 48 IMPEDANCE 7 100 INDUCTANCE 7 19 7 38 7 117 7 119 INDUCTANCE MATCH 7 42 I...

Page 470: ...connections 2 14 Server Installation Getting Started 2 14 SERVER PORT 8 27 Service 9 6 SETTINGS 6 21 Signal 6 22 Softkeys 2 8 Specification summary 8 5 STATISTICS BASIC STATISTICS 4 14 Stop on Fail 2...

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