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PRECISION INSTRUMENTS FOR TEST AND MEASUREMENT

 

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TEL:  (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988

 www.ietlabs.com

IET LABS, INC.

Copyright 

© 

2019 IET Labs, Inc.

PRS-330 IM / March 2019

PRS-330 SERIES

Programmable

Decade Resistance Substituter

(IEEE-488.2, Ethernet and USB)

Operation Manual

Summary of Contents for PRS-330 series

Page 1: ...STRUMENTS FOR TEST AND MEASUREMENT TEL 516 334 5959 800 899 8438 FAX 516 334 5988 www ietlabs com IET LABS INC PRS 330 SERIES Programmable Decade Resistance Substituter IEEE 488 2 Ethernet and USB Ope...

Page 2: ...TEL 516 334 5959 800 899 8438 FAX 516 334 5988 www ietlabs com IET LABS INC...

Page 3: ...ASUREMENT TEL 516 334 5959 800 899 8438 FAX 516 334 5988 www ietlabs com IET LABS INC Copyright 2019 IET Labs Inc PRS 330 IM March 2019 PRS 330 SERIES Programmable Decade Resistance Substituter IEEE 4...

Page 4: ...TEL 516 334 5959 800 899 8438 FAX 516 334 5988 www ietlabs com IET LABS INC PRECISION INSTRUMENTS FOR TEST AND MEASUREMENT...

Page 5: ...at no charge when returned to IET Changes in this product not approved by IET or application of voltages or currents greater than those allowed by the specifications shall void this warranty IET shall...

Page 6: ...r it is not marked with a measurement category its measurement terminals must not be connected to line voltage mains The PRS 330 is an indoor use product DANGEROUS PROCEDURE WARNINGS Comply with all W...

Page 7: ...be made by qualified maintenance personnel only DO NOT substitute parts or modify the instrument When working with high voltages post warning signs train personnel and keep unauthorized personnel away...

Page 8: ...002 96 EC This product complies with the WEEE Directive 2002 96 EC marking requirements The affixed label indicates that you must not discard this electrical electronic product in domestic household w...

Page 9: ...9 Cleaning 9 3 2 Connection 9 3 2 1 General Considerations 9 3 2 2 Electrical Considerations 9 3 3 Condensed Operating Instructions 10 3 4 Menu Structure 11 3 4 1 Home Screen 15 3 4 2 Setting a Resist...

Page 10: ...2 Capabilities 29 6 3 Address Switch and Communications Settings 29 6 4 IEEE Option Operation 29 Chapter 7 PROGRAMMING 31 7 1 Introduction 31 Chapter 8 MAINTENANCE 33 8 1 Verification of Performance 3...

Page 11: ...2 PRS DMM Main Screen 40 9 2 1 PRS DMM Main Screen Operation 40 9 3 PRS DMM Settings 40 9 3 1 PRS DMM Settings Screen 40 9 3 2 PRS Settings 40 9 3 3 Meter Settings 41 9 3 4 Adjust PRS 42 9 3 5 PRS DM...

Page 12: ...PRS 330 Series v Table of Contents Page left intensionally blank...

Page 13: ...test currents are drawn by digital multimeters and other test instruments Contact resistance remains low and repeatable High quality gold plated tellurium copper five way binding posts serve to minim...

Page 14: ...nt panel display indicates the mode selected 2 wire or 4 wire There are 4 pre programmed RTD resistance tables and others may be added by the user The controller allows for other convenient programmed...

Page 15: ...DMM eliminates the requirement for manual trimming of resistors Terminals Front and rear connections each consisting of 4 low emf gold plated tellurium copper 5 way binding posts are used for HI and...

Page 16: ...e affixed label indicates that you must not discard this electrical electronic product in domestic household waste Product Category With reference to the equipment types in the WEEE Directive Annex I...

Page 17: ...sion wire wound and metal foil RTD Tables PT 100 and PT 1000 tables for both Fahrenheit and Celsius are programmed into memory locations 9 RTD tables can be entered into memory to allow user selection...

Page 18: ...SPECIFICATIONS PRS 330 Series 6 Page left intensionally blank...

Page 19: ...iod of time it should be sealed in plastic and stored in a dry location It should not be subjected to temperature extremes beyond the specifica tions Extended exposure to such temperatures can result...

Page 20: ...30 W Max Fuse Only replace fuse with the same type and rat ing UL CSA type T 0 8 A 250 V 5 x 20 mm 3 1 7 Environmental Do not operate the instrument in the presence of flammable gasses or fumes The PR...

Page 21: ...Wire See section 3 4 4 for more information The GND terminal on all models is connected to the case and to earth and chassis grounds This may be used as a shield terminal 3 2 2 Electrical Consideratio...

Page 22: ...ion The GND terminal on all models is connected to the case and to earth and chassis grounds This may be used as a shield terminal 3 2 2 Electrical Considerations The performance of the PRS 330 is dir...

Page 23: ...menu structure of the PRS 330 Menu items with a allow selection of a value or feature when ENTER pressed Menu items without have a submenu with more than 1 item Press MENU to display Main Menu and pre...

Page 24: ...d Value 1 Decade Value 0 1 Percent Value 0 001 Standard Values Resistance Settings Main Menu Probe Type None PT 100 C PT 100 F PT 1000 C PT 1000 F or Default User Selected RTD Table Settings Resistanc...

Page 25: ...able pressed About Remote Communication Settings Main Menu IEEE Ethernet Remote Communication Settings Main Menu IEEE IEEE Address 1 30 Remote Communication Settings Main Menu Ethernet IP Address 192...

Page 26: ...PRS 330 Resistance Settings Remote Communication Settings Instrument Calibration only shown when Cal Enable pressed About Main Menu About Main Menu Calibration Instrument Calibration Main Menu Full Ca...

Page 27: ...mperature if RTD tables are used The main display also shows if the unit is configured for 4 wire mode or 2 wire mode in the upper left corner of the display after Resistance Figure 3 1 Home screen sh...

Page 28: ...rfaces the intermediate value between previous value and the new value will either be a SHORT OPEN or undetermined in default switching case Standard Values and RTD and Other Tables Settings have sepa...

Page 29: ...the E denotes the number of resistance values the series contains per decade The series are logarithmic and are derived from the resistor tolerance resistors with a tighter tolerance can have more val...

Page 30: ...plus the resistance value multipled by the Percentage Value 3 4 6 RTD and Other Tables Menu Selecting the RTD and Other Tables menu allows use of tables There are 9 tables that can be selected The fir...

Page 31: ...of the table can be entered If there are tables which need to be deleted then highlight the table and press DEL Once the table name is entered the table can be selected in User Functions and then a v...

Page 32: ...NTER on Ethernet will show the Ethernet menu in Figure 3 10 Figure 3 10 Ethernet Interface Menu There are 3 selections IP Address Network Gateway Network Mask which can be highlighted and then press E...

Page 33: ...rass and steel should be avoided Tinned copper and solder are acceptable Thisemfwillnotbereflectedifanacmeasurement instrument is employed and can be eliminated by using a meter with True Ohm capabili...

Page 34: ...OPERATION PRS 330 Series 22 Page left intensionally blank...

Page 35: ...e command set outlined in Appendix B Data should be terminated with LF line feed 4 3 1 USB Interface Drivers Normally when the PRS 330 is connected to a computer using the USB port Windows 7 and highe...

Page 36: ...USB INTERFACE PRS 330 Series 24 Page left intensionally blank...

Page 37: ...backspace character causes the prior character to be deleted Communication timeout is two minutes and it is recommended that the client issue a Space BS sequence on an occasional basis less than the t...

Page 38: ...cate with the PRS through RPC over TCP IP RPC or Remote Procedure Calls provides an invisible communication medium for the developer The VXI 11 specification provides an RPCL Remote Procedure Call Lib...

Page 39: ...ial configuration This will eliminate any potential network conflicts while configuring the PRS Figure 4 2 9006 Connected to the local hub 2 Apply power to the PRS Set the Remote local switch to Remot...

Page 40: ...n saved in the board s fl ash memory You have to reboot the unit or power cycle it for the changes to take affect Press the Reboot key to reboot the unit now or the Return to the Configuration Page ke...

Page 41: ...and click on Properties Right click on Local Area Connection and click Properties Highlight Internet Protocol TCP IP and click Properties If your PC s IPaddress is in a different range record the cur...

Page 42: ...ter all parameters have been entered for a Model 9006 Click the Redo From Start key if you need to start over or if you want to change any of the prior settings 10 When done the Save Configuration key...

Page 43: ...o Disconnect Aborts socket if link count goes to 0 Off Table 4 2 Default Settings 5 8 PRS Programming A PRS SCPI command reference is in cluded in Appendix A This gives a complete set of commands An e...

Page 44: ...PRS 330 Series ETHERNET INTERFACE OPTION 32...

Page 45: ...d reference are located in Appendix A Other tutorials are available on line consult IET for additional information A software GPIB keyboard can be found at www ietlabs com 6 2 Capabilities The IEEE op...

Page 46: ...NTERFACE OPTION 34 Unzip the file and follow instructions to install Open the application You may use the Find Listeners key to confirm that the PRS unit is recognized Other instruments may also be re...

Page 47: ...s The USB Ethernet and IEEE interface can be programmed via any of the commands listed in Appendix A and B For USB lf cr or crlf can be used as terminator The device returns in this case crlf The devi...

Page 48: ...PROGRAMMING PRS 330 Series 36 Page left intensionally blank...

Page 49: ...and at nominal laboratory conditions of humidity There should be no temperature gradients across the unit under test In the case of the PRS 330 a Kelvin type 4 wire test terminals should be used to ob...

Page 50: ...and their nominal resistance value These resistors should be within 1 of the nominal value for R1 to R5 and 0 1 of the nominal value for R6 and higher to ensure proper operation of the PRS 330 If the...

Page 51: ...ure 8 2 will be shown Once this menu is displayed the CAL ENABLE key can be released Figure 8 2 Instrument Calibration Menu Full Calibration allows calibration of 1 or all 43 resistors Trace Calibrati...

Page 52: ...ed in ohms using the keypad Once the resistance has been entered the NEXT key can be pressed to move to the next resistor value R2 The PREV key can be used to go back to the previous resistance value...

Page 53: ...ent Calibration menu select Calibration History and press ENTER The menu in Figure 8 6 will be shown Each time an internal adjustment of the resistors is performed and saved per Section 8 1 4 a new li...

Page 54: ...30 Relay Board Relay Board Complete Not Shown PRS 330 CPU Board CPU Board Complete Not Shown PRS 330 Remote Interface USB IEEE Ethernet Interface Card 4 PRS 330 Touch Screen Touch Screen Not Shown PRS...

Page 55: ...r equivalent GPIB interface Fluke 8508A DMM or Keysight 3458A DMM PRS 330 Programmable Resistance Substituter Kelvin cables between PRS 330 and Fluke 8508A GPIB cables as necessary 9 1 3 Software Inst...

Page 56: ...red temperature value Clicking on the Calibrate key starts the process of of adjusting The DMM Measures and adjusts the PRS 330 to achieve the closest value possible to the entered target value The ac...

Page 57: ...Initialize key The IDN string will be shown in the white box along with a Success indication The PRS DMM software will configure the DMM for resistance measurements appropriate resolution 7 digits for...

Page 58: ...d time to make the measurements Slow measurements are made with 7 digits of resolution and measurements and adjustments are made until the accuracy is better than 20 ppm Medium measurements are made w...

Page 59: ...ere a reply is expected SCPI builds on the programming syntax of IEEE 488 2 to give the programmer the capability of handling a wide variety of instrument functions in a common manner This gives all i...

Page 60: ...e register SRE Returns the read of the service request enable register ESE Set the event status enable register value SRE Set the service request enable register value RST Reset the buffer TST Self te...

Page 61: ...e value from memory location 0 to 9 Number is 0 to 9 SYSTEM Commands SYSTem SERIal Ax xxxxxxxx Sets the serial number in non volatile memory serial num ber Serial number in the form Ax xxxxxxxx x 0 to...

Page 62: ...e resistor number is automatically incremented by 1 CALIbrate RESistance Returns resistance number to be calibrated Numbers 1 to 43 CALIbrate RESistance SET number Sets calibrated value of resistance...

Page 63: ...isplay value currently shown in the PRS display SOURce RESistance display value Sets output resistance of the PRS 330 if table is set to None or the resistance value corresponding to the display value...

Page 64: ...REAR CONFigure SWITching FAST OPEN SHORT CONFigure SWITching Returns FAST OPEN SHORT CONFIGURE DMM Mode PRS 370 Only CONFigure PRSDMM ACCUracy SLOW FAST Sets resolution of DMM 7 or 6 respectively CONF...

Page 65: ...0 to 9 CONFigure ETHErnet MASK Returns network mask address as a string CONFigure ETHErnet MAC Returns MAC address as a string CONFIGURE Standard Values CONFigure STDValue SET STANard DECade RADiometr...

Page 66: ...ns the number 1 to 4 of currently selected table CONFigure TABLe ERASE Erases all rows in the table CONFigure TABLe ADD user_value resistance_value Adds a row to the end of table show ing user value a...

Page 67: ...PRS 330 Series APPENDIX B 55...

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