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Operation Manual

For The

6622T Series

Automatic DCC Thermometry Bridges

www.guildline.com

NOTICE

The  contents  and  information  contained  in  this  manual  are  proprietary  to
Guildline  Instruments  Limited.    They  are  to  be  used  only  as  a  guide  to  the
operation  and  maintenance  of  the  equipment  with  which  this  manual  was
issued and may not be duplicated or transmitted by any means, either in whole
or in part, without the written permission of Guildline Instruments Limited.

OM6622T-A-00

30 January 2018

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Summary of Contents for 6622T Series

Page 1: ...ual are proprietary to Guildline Instruments Limited They are to be used only as a guide to the operation and maintenance of the equipment with which this manual was issued and may not be duplicated o...

Page 2: ......

Page 3: ...Bench Model Only 2 6 2 3 3 Guard Terminal Bench Model Only 2 6 2 3 4 Circuit Common Terminal Bench Model Only 2 6 2 3 5 Power 2 6 2 3 6 Display 2 7 2 3 7 Numeric Keypad 2 7 2 3 8 Special Keys 2 7 2 3...

Page 4: ...12 4 6 1 1 Measure MENU Fn 1 MAIN Page 1 of 3 4 13 4 6 1 2 Measure MENU Fn 1 MAIN Page 2 of 3 4 14 4 6 1 3 Measure MENU Fn 1 MAIN Page 3 of 3 4 15 4 6 2 Setup MENU Fn 1 Setup_MAIN 4 16 4 6 3 Profiles...

Page 5: ...Messages 6 1 6 1 2 Model 6622T Setup Warnings 6 3 6 1 3 Bridge Coefficients 6 3 6 2 QUICK RATIO CHECK 6 3 6 2 1 Purpose 6 4 6 2 2 Equipment Required 6 4 6 2 3 Set Up 6 4 6 2 4 Check Procedure 6 5 7 R...

Page 6: ...OM6622T A 00 30 January 2018 v 7 5 MODEL 6622T PROGRAMMING COMMAND SUMMARY 7 8 8 APPENDICES 8 1 8 1 GENERAL SPECIFICATIONS continued 8 1 8 2 RESISTANCE MEASUREMENT SPECIFICATION 8 2...

Page 7: ...CE MEASUREMENT RESPONSE VERSUS TEST SAMPLE 3 1 FIGURE 3 2 REAR PANEL CONNECTIONS NORMAL OHM MODE 3 2 FIGURE 3 3 REAR PANEL CONNECTIONS LOW OHM MODE WITH 6623 3 8 FIGURE 3 4 REAR PANEL CONNECTIONS LOW...

Page 8: ...OM6622T A 00 30 January 2018 vii...

Page 9: ...300 RECOMMENDED LOW OHM MODE TEST SETUP 3 7 TABLE 3 4 RECOMMENDED TEMPERATURE MEASUREMENT TEST SETUP 3 10 TABLE 6 1 MODEL 6622T ERROR MESSAGES 6 2 TABLE 7 1 FACTORY SETTING GPIB 7 2 TABLE 7 2 IEEE 488...

Page 10: ...OM6622T A 00 30 January 2018 ix...

Page 11: ...e software Once the computer system is installed and connected to the IEEE 488 Interface of the 6622T Thermometry Bridge full software control of the bridge is possible The front panel controls and in...

Page 12: ...Research Council of Canada1 Remote access to the embedded microprocessor controller through a simple control language command set and GPIB communication interface allows the 6622T to fully exploit the...

Page 13: ...t balance the ratio of the two currents Ix and Is flowing in the two windings is the same as the ratio of the turns set for each winding Nx and Ns Complete electrical isolation between circuit current...

Page 14: ...OMMUNICATION CLK CLK Do Di FIBRE OPTIC INTERFACE Do Di Do Di C1 1 P Is Is PWR Ix FIBRE OPTIC INTERFACE Ix PWR Nx 0 to 8747 REAL TURNS ONLY 2 C P2 Rx Tx Rx Tx Rx C2 P2 P1 C1 S Rs Ns 648 TURNS AUTORANGI...

Page 15: ...Low Ohm mode a high current range extender such as the model 6623A is used to improve the accuracy and allow for measurements below the normal Ohm range 1 4 1 2 Normal Ohm Measurement Mode This mode a...

Page 16: ...Section 1 OM6622T A 00 30 January 2018 1 6...

Page 17: ...e correct line voltage and the correct fuse must be installed before power is applied to the instrument The 6622T has a voltage selection which must be set correctly The settings available are 100 V 1...

Page 18: ...IME DELAY TYPE 100 V 120 V 220 V 240 V 2 A 250 V T 2 A 250 V T 1 A 250 V T 1 A 250 V T Table 2 1 Fuse Ratings 100V 120V 220V 240V 100V 120V 220V 240V EXPOSE LINE SELECTOR SLIDER REMOVE SELECTOR 120V S...

Page 19: ...not been found then run the Rescan For Bridge utility in the File menu to locate it Note that you will also need to run the Rescan For Bridge utility if the bridge was turned on after BridgeWorks was...

Page 20: ...o start the measurement The 6622T bridge will begin by showing the nominal value of the resistor to be measured and then continue to go through a number of rough measurement cycles until a full resolu...

Page 21: ...ront View Bench Rack 2 3 1 Standard Resistor Input Terminals Bench Model Only The standard resistor input terminals consist of 4 low thermal binding posts The binding posts have the Rs label above the...

Page 22: ...nsists of a four way white binding post The guard is an active circuit referenced to the signal low C1 side of the four terminal Rx resistor This terminal is located on the front panel for bench top m...

Page 23: ...r keys are labeled as follow LEFT ARROW UP ARROW DOWN ARROW and RIGHT ARROW 2 3 8 2 Function Keys The four unlabelled keys located below the display are the function keys Their functionality depends o...

Page 24: ...Figure 2 3 6622T Rear View Bench Rack 2 4 1 IEEE 488 Interface The IEEE 488 interface consists of the standard IEEE 488 interface connector The IEEE 488 interface provides the means for the computer s...

Page 25: ...rmal binding posts The binding posts have the Rx label inside the group of four posts The posts are labeled clockwise from bottom left to right C1 P1 P2 and C2 These posts provide direct connection fo...

Page 26: ...green binding post The ground terminal is bonded to the chassis of the 6622T Series and to power ground of the line input connector 2 4 8 Extender Connector The Extender connector is a 6 pin circular...

Page 27: ...622T bridge through the terminal of the system computer is provided in the BridgeWorks Software User s Manual A typical example of a resistance measurement response versus test sample is illustrated i...

Page 28: ...cations are based on use of shielded wire connections throughout with shields connected to the GUARD terminal Use of SCW cable from Guildline is most recommended NOTE In this as in all measurements op...

Page 29: ...esistor serial number under serial No RS line Select the down arrow key to highlight the next line on the display Enter the reversal rate for the measurement Select the down arrow key to highlight the...

Page 30: ...6 20 10 1 k 0 316 31 6 60 100 10 31 6 31 6 20 100 100 10 10 20 100 1 k 1 10 40 100 10 k 0 1 10 90 1 k 100 10 10 40 1 k 1 k 3 16 3 16 40 1 k 10 k 0 316 3 16 60 1 k 100 k 0 032 3 2 90 10 k 1 k 3 16 3 1...

Page 31: ...an be done by pressing the softkey under displayed range extender model until the displayed value is changed to the desired model The 6622 A family of DCC bridges can work with the 6623A Series or the...

Page 32: ...bridge is carrying out a measurement at 0 zero current Now enable the current output of the power supply Remember to always start the bridge measurement before the high current output of the current...

Page 33: ...0 1 3A 60 Limit of x 20 3A Range 1000 10 0 8 8 20 1 3A 60 Limit of Voltage Compliance 1 0 001 15 15 200 1 15A 60 Limit of x 200 15A Range 1 0 005 15 75 200 1 15A 60 Limit of x 200 15A Range 1 0 01 10...

Page 34: ...Section 3 OM6622T A 00 30 January 2018 3 8 Figure 3 3 Rear Panel Connections Low Ohm Mode with 6623...

Page 35: ...Section 3 OM6622T A 00 30 January 2018 3 9 Figure 3 4 Rear Panel Connections Low Ohm Mode with 6623A 300...

Page 36: ...p 4 Ref P R T Itest 2 mAmps Imax mAmps Reversal Rate sec Comment 1 Update 2 Quick Measure 1 25 2 4 100 20 Limited by 10mW max in standard 1 100 1 100 20 Limited by 10mW max in standard 10 25 2 6 32 31...

Page 37: ...Section 3 OM6622T A 00 30 January 2018 3 11 Figure 3 5 Rear Panel Connections PRT SPRT...

Page 38: ...Resistance Measurement System Before using the 6622T with the computer ensure that the operation of the software package is well understood The computer controls the system through the IEEE 488 Inter...

Page 39: ...ded in the form of the up arrow down arrow left arrow and right arrow Four software programmable keys are positioned beneath the display area These keys take on the function as displayed in the displa...

Page 40: ...Power x2 No Filter Decimation N Average Normal PPM Delta PPM SP Delta SP 0 001ppm 0 01ppm 0 1ppm 1 0ppm 10 0ppm Quick OFF Quick ON GPIB Coef Set Diagnostic P O S T Filter Datum Password Edit OK Addres...

Page 41: ...2T A 00 30 January 2018 4 3 Figure 4 2 Menu Tree SETUP Resistor Edit OK Normal Low Ohms Low Ohms Edit OK 6623 2A 6623 9923 Custom Edit OK Measure Setup Sofcal Profiles Edit Edit OK Scale 6623A 3A 6623...

Page 42: ...ction 4 OM6622T A 00 30 January 2018 4 4 Figure 4 3 Menu Tree SETUP Probe Edit OK IPTS 68 ITS 90 IEC 751 Edit OK 6623 2A 6623 9923 Custom Coeff Edit Neg Measure Setup Sofcal Profiles Edit Edit OK Scal...

Page 43: ...A 00 30 January 2018 4 5 Figure 4 4 Menu Tree MEASURE VIEW Edit Ok Refresh Clear Det Clear Sum Detail Summary Graph Detail Window Graph Previous Next Summary Data Previous Next Summary Refresh Data De...

Page 44: ...areas and a status line When there are more than four functions for a given menu level a Scrn n N function key will appear Pressing this menu option will display the remaining set of operations availa...

Page 45: ...played name of the key will be updated to reflect the newly assigned state Example Current key option Option after key press 1 2 Press Button Update 2 Update 4 Update 4 Update 1 If the displayed optio...

Page 46: ...of the display screen Example Current Screen Example continued Screen after pressing function key Display The alternate value Ohms associated with the function key Display is toggled into the active...

Page 47: ...present menu level If a header line is displayed the number of selections are restricted to 5 or less If there is no header line then the number of selections can be 6 or less 4 4 4 Base Edit Select M...

Page 48: ...en type is a selection screen for example the Resistor select menu function the highlighted item will be selected active only when the soft function key Ok is pressed While in an Edit screen function...

Page 49: ...del configuration and the installed options i e B XP XPS XR XPR HV The REMOTE DISPLAY screen will appear only when the 6622T has been addressed by a remote communication device on the GPIB The only ac...

Page 50: ...evel pressing the CANCEL key will automatically stop the measurement cycle and cause a return to the Measure off mode There are two other menu sequences that will also turn Measure off automatically 1...

Page 51: ...s 3 if the current measurement mode is LOW OHMS then the extender ratio will also be displayed on the STATUS LINE Available functions menu page 1 of 3 Function key Fn 1 toggles through the set of avai...

Page 52: ...ent reversal rate Update 2 sets a screen update rate at the test current reversal rate Update 4 sets a screen update rate at half the test current reversal rate Function key Fn 2 selects twice the rat...

Page 53: ...s affects Normal Delta and Delta SP display modes only Available resolutions are 0 001 ppm 0 01 ppm 0 1 ppm 1 0 ppm 10 ppm Function key Fn 3 toggles the quick measure mode on Quick ON and off Quick OF...

Page 54: ...IN Profiles allow the user to save resistor configuration files 15 profiles are available Function key Fn 1 Select allows the selection and deletion of profiles Function key Fn 2 Ok selects the highli...

Page 55: ...oggles between m Ohms Ohms k Ohms M Ohms 4 6 4 View The View Menu allows the user to view the trace data in graphical and text format The last 500 entries are kept in memory and the individual entries...

Page 56: ...ious if present scrolls the trace buffer window left Next if present scrolls the trace buffer window right Summary switches to the summary display The Up arrow scrolls the trace buffer left by Up Down...

Page 57: ...w scrolls to the beginning of the trace buffer The Right Arrow scrolls the end of the buffer and sets the trace in automatic update mode 4 6 4 4 Window Detail Graph Window Size is the number of trace...

Page 58: ...ect operation using the high current range extender for low value resistance measurements NOTE The measurement mode is affected immediately when the function key is pressed If a measurement is in prog...

Page 59: ...Current is satisfied then the test is terminated and an error message is displayed The Max Current is the maximum current that can be carried by the STANDARD RESISTOR Rs Note that the highest Test Cur...

Page 60: ...RESISTOR Rx and can be selected up to 3 Amps with the 6623A 3A and 3000 Amps with the 6623A 3000 With the 6623 the drive current is not entered and is determined by an external power supply The Max R...

Page 61: ...enables the ITS 90 coefficients for the probe to be viewed and or edited Function Key Fn 3 IEC 751 allows entry to the IEC 751 measurement menu and enables the IEC 751 coefficients for the probe to b...

Page 62: ...s are removed from the display screen along with the display of Coeff values Function key Fn 3 Coeff selects from the ITS90 set of temperature ranges Range 6 273 15 K to 1234 93 K screen display 0C to...

Page 63: ...ed the error message Invalid Password will be displayed and the edit session will be terminated 4 6 6 2 1 Edit Neg MENU Fn 2 ITS90 Edit MAIN Neg Coeff Range 259C to 0C a1 b1 c1 c2 c3 Edit Ok Screen 2...

Page 64: ...use arrow keys to move the highlight to the data line to be changed Modify data and press Ok When Edit is pressed the PASSWORD CHECK display menu is activated Before the selected coefficient can be c...

Page 65: ...e to be changed Modify data and press Ok 4 6 7 Sofcal MENU Fn 3 MAIN The menu options available through this function allow configuration setup and general modes of operation of the 6622T Three pages...

Page 66: ...n level of the installed software Function Key Fn 2 Filter allows setting of the filter constants for the AVERAGE and DECIMATION filters Function Key Fn 3 Datum allows setting of reference datum value...

Page 67: ...4 6 7 1 GPIB MENU Fn 1 Sofcal_MAIN Address function key Fn 1 sets the GPIB address Mode function key Fn 2 selects from the options Talk Listen Talk Only Disabled No GPIB settings will be saved or acte...

Page 68: ...w a password must be supplied Diagnostic menu selection page 1 of 4 Function Key Fn 1 Monitor selects the monitor menu level and displays the value of the internal channels reported from the servo car...

Page 69: ...flow and the polarity of the voltage outputs Function key Fn 2 milliamps sets the magnitude of the current output For the current to flow to the Rs and Rx terminals Mode must be set to Normal Ohm The...

Page 70: ...d from the choice of Slowest Slow Moderate and Fast The servo loop is used for balancing the flux in the core Function key Fn 3 enables or disables the automatic ramping feature for the Current For cu...

Page 71: ...ed it can be reset to the factory default password by entering this menu and pressing in order Left Arrow Right Arrow Up Arrow Down Arrow ERROR STATUS displays the error bits in hexadecimal notation 0...

Page 72: ...t for the simple averaging filter 1 2 4 8 16 32 64 and 128 Function key Fn 2 Decimation allows the setting of the decimation filter factor 0 001 through 0 500 4 6 7 6 Datum MENU Fn 3 Sofcal_MAIN The v...

Page 73: ...ate and time The time is entered in 24 hour format 4 6 7 8 Extender MENU Fn 3 SofcalMENU This allows creation deletion and editing of extenders Existing extenders are selected with UP and DOWN arrows...

Page 74: ...econds for current The 6622T always sets current to zero 0 and then sets the specified current during state changes turns or polarity For a standard Guildline Product the setting for this stage is 1 s...

Page 75: ...milliampere correction This is applied when negative current is sent by the 6622T For a standard Guildline product this is 0 ve Gain is used to adjust the current with a milliampere correction The gai...

Page 76: ...product this is 15 0 A Cascade state is used to select the stage For a standard Guildline product this is 1 Slave state is used to select the stage For a standard Guildline product this is 0 or blank...

Page 77: ...l 6623A 150 Cascade state is used to select the stage For a standard Guildline product this is 1 Slave state is used to select the stage For a standard Guildline product this is 0 or blank Stage 4 Ram...

Page 78: ...ndard Guildline product this is 1 Slave state is used to select the stage For a standard Guildline product this is 1 For a Guildline 6623A 3000 the slave count is set to 20 4 6 6 9 PASSWORD MENU Fn 1...

Page 79: ...ing of up to nine 9 characters can be entered for the password Function key Ok will accept the new password as entered NOTE The factory default password is 6622 If the password has been changed and su...

Page 80: ...Section 4 OM6622T A 00 30 January 2018 4 42...

Page 81: ...o ratio accuracy It is recommended that all of these procedures be performed on an annual basis to verify that the 6622T is performing within the manufacturer s specifications relative to its last cal...

Page 82: ...nning a test sequence These measurements can also be made manually If they are made manually allow sufficient time for the measurement to settle 1 2 hours and ensure that all measurements made that ar...

Page 83: ...the 100 1 ratio must agree to within the specification of the nominal ratio for either directly measuring the 100 1 ratio or calculating the ratio from the product of the 100 10 ratio and the 10 1 rat...

Page 84: ...mance of the model 6622T for its recertification 5 2 1 Equipment Required The following equipment is required for this procedure 10 ohm standard resistor stable to 0 01 ppm over a 24 hour period x2 10...

Page 85: ...User s Manual for the particulars of running a test sequence These measurements can also be made manually If they are made manually allow sufficient time for the measurement to settle 1 2 hours and en...

Page 86: ...0 1 ratio must agree to within the specification of the nominal ratio for either directly measuring the 100 1 ratio or calculating the ratio from the product of the 100 10 ratio and the 10 1 ratio as...

Page 87: ...messages either on the front panel display of the 6622T Thermometry Bridge in manual mode or on the computer monitor when using the BridgeWorks Data Acquisition Software The error messages and their c...

Page 88: ...the BridgeWorks Data Acquisition Software 7 No Serial Number Specified File not saved Rs Serial number left blank in setup put one in 8 Nano Railed Out of Nanovoltmeter range Resistors not wired to R...

Page 89: ...ernal Values This menu allows full control of the model 6622T Great care should be taken when using these functions Self test not completed 6 1 3 Bridge Coefficients 1 Run the BridgeWorks Data Acquisi...

Page 90: ...procedures be performed after any corrective maintenance activity to confirm the operation of the 6622T It is recommended that all of these procedures be performed on an annual basis to verify perform...

Page 91: ...l Interchange 2 1 1 100 mA 15 s Normal 3 10 1 10 mA 15 s Normal Ladder 4 100 10 3 16 mA 15 s Normal 5 100 1 1 0 mA 15 s Normal 2 For the resistor pair calculate and report the interchange closure erro...

Page 92: ...Section 6 OM6622T A 00 30 January 2018 6 6...

Page 93: ...y those of the model 6622T may appear to be inactive due to the frequency of communication by the computer system which acts as the GPIB controller 7 1 INTERFACES The model 6622T system has an externa...

Page 94: ...troller of the model 6622T is the computer system which the user controls through the BridgeWorks Data Acquisition Software 7 2 2 IEEE 488 Responses The reply to any IEEE 488 query command will be a s...

Page 95: ...ers 1 DAV DATA VALID is used to indicate the condition of availability and validity information on the DIO signal lines 2 NDAC NOT DATA ACCEPTED 3 NRFD NOT READY FOR DATA is used to indicate the condi...

Page 96: ...a printer for hard copy then Talk Only mode should be selected as the preferred mode of operation 7 2 6 IEEE 488 Electrical Interface The model 6622T meets the subsets of the IEEE 488 interface speci...

Page 97: ...12 SHIELD Screening on Cable connected to ground 13 DIO5 Data Input Output Line 5 14 DI06 Data Input Output Line 6 15 DIO7 Data Input Output Line 7 16 DIO8 Data Input Output Line 8 17 REN Remote Enab...

Page 98: ...r If for some reason the controller does not read the responses from its query commands the output buffer will overflow in this case the first data into the buffer will still be valid and the later da...

Page 99: ...h the 6622T will accept numeric parameters in the range 2 2E 308 through 1 8E308 the useful range of numbers is between 1 0E 8 and 1 0E5 7 4 MODEL 6622T REMOTE AND LOCAL OPERATION The model 6622T can...

Page 100: ...6622T will remain in the remote with lockout state Remote with lockout is similar to the remote state but restricted The Remote softkey will not return to the local state To return the model 6622T to...

Page 101: ...MAND COMMENT CLS clear status register ESR query display event status register ESE query display event status enable ESE unsigned set event status enable IDN query display identity of unit OPT query d...

Page 102: ...t 0 Filter OFF 1 Decimation 2 Simple average MEASure FILTer query display the filter setup MEASure UPDAte rate set the number of screen updates for each measurement cycle rate 0 1 2 type digit 0 1 upd...

Page 103: ...ltmeter to measure input voltages at the potential terminals 0 OFF 1 ON MEASure VOLT query nanovoltmeter status MEASure QUICk state select the quick measurement state state 0 1 type boolean 0 OFF 1 ON...

Page 104: ...stor md RS_SN SN RX Rev_Rate Tst_Val Tst_Max set the active resistor measurement configuration mode 0 1 2 type digit 0 normal mode 1 high ohms mode 2 low ohms mode RS nr3 ref resistor value RS_SN stri...

Page 105: ...le filter 0 1 2 type digit 0 none 1 decimation 2 simple average size unsigned size for decimation sample size for simple average power 0 1 2 type digit 0 power normal X1 1 power X2 CONFigure RESIstor...

Page 106: ...or serial Rev_rate nr3 test current reversal rate Tst_Val nr3 test current volts Tst_Max nr3 max current Is for ref resistor CONFigure PROBe query display active probe configuration Information respon...

Page 107: ...size unsigned size for decimation sample size for simple average power 0 1 2 type digit 0 power normal X1 1 power X2 2 power X0 5 CONFigure PROBe DISPlay query display the active probe display setup C...

Page 108: ...he active probe negative temperature coefficients CONFigure VOLTmeter range zero high ref set the voltmeter calibration coefficients range 0 1 2 3 4 type digit 0 20V range 1 2V range 2 200mV range 3 2...

Page 109: ...pond to commands with a minimum data set SYSTem VERSion query display the installed software version SYSTem DIAGnostic ROMChecksum query display rom checksum SYSTem DIAGnostic SERialNumber number assi...

Page 110: ...1k ohm Rs range 4 10k ohm Rs range 5 100k ohm Rs range 6 1M ohm Rs range 7 10M ohm Rs range 8 100M ohm Rs range corr nr3 correction coefficient ppm of ratio uncert nr3 uncertainty ppm of ratio SOFCAL...

Page 111: ...y adc beta for the nanovolt detector SOFCAL GET Calculate adc beta for the nanovolt detector SOFCAL FREQuency Hz set the line frequency option Hz 011 type digit 0 60 Hz 1 50 Hz SOFCAL DATE query displ...

Page 112: ...mode setting Highres resolution set the high resolution mode resolution 0 1 type boolean 0 OFF 1 ON HardWareFilter query display the hardware filter status HardWareFilter status set the hardware filt...

Page 113: ...d query display the speed setting ISSpeed speed set the speed speed 0 1 2 3 type digit 0 reset 1 slow 2 moderate 3 fast OHmmode Query display the ohm mode OHmmode mode set the ohm mode mode 0 1 2 type...

Page 114: ...Section 7 OM6622T A 00 30 January 2018 7 22...

Page 115: ...Section 8 OM6622T A 00 30 January 2018 8 1 8 APPENDICES 8 1 GENERAL SPECIFICATIONS continued 6622T Series General Specifications Table 8 1 General Specifications continued...

Page 116: ...ards For example a 100 UUT could be measured with a 1 10 or 100 reference standard Rs To determine the bridge s contribution to measurement uncertainty simply look at the Rs you are using and go to th...

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