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PRECISION INSTRUMENTS FOR TEST AND MEASUREMENT
PRS-200 SERIES
High Precision
Manual or SCPI Programmable
Decade Resistance Substituters
(IEEE-488.2 or RS232)
Operation Manual
Copyright 2005 IET Labs, Inc.
PRS200 IEEE.2 im/October, 2005
IET LABS, INC.
www.ietlabs.com
534 Main Street, Westbury, NY 11590
TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988
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Table of Contents
Related Manuals for IET Labs PRS-200 Series
Summary of Contents for IET Labs PRS-200 Series
- Page 1 High Precision Manual or SCPI Programmable Decade Resistance Substituters (IEEE-488.2 or RS232) Operation Manual Copyright 2005 IET Labs, Inc. PRS200 IEEE.2 im/October, 2005 IET LABS, INC. www.ietlabs.com 534 Main Street, Westbury, NY 11590 TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988...
- Page 2 ♦ ♦ PRECISION INSTRUMENTS FOR TEST AND MEASUREMENT IET LABS, INC. www.ietlabs.com 534 Main Street, Westbury, NY 11590 TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988...
- Page 3 WARRANTY We warrant that this product is free from defects in material and workmanship and, when properly used, will perform in accordance with applicable IET specifications. If within one year after original shipment, it is found not to meet this standard, it will be repaired or, at the option of IET, replaced 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.
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Page 4: Warning
WARNING OBSERVE ALL SAFETY RULES WHEN WORKING WITH HIGH VOLTAGES OR LINE VOLTAGES. Dangerous voltages may be present inside this instrument. Do not open the case Refer servicing to qulified personnel HIGH VOLTAGES MAY BE PRESENT AT THE TERMINALS OF THIS INSTRUMENT WHENEVER HAZARDOUS VOLTAGES (>... -
Page 5: Table Of Contents
Contents WARRANTY ....................i WARNING ....................ii CAUTION ....................ii Chapter 1: INTRODUCTION ..............1 Chapter 2: SPECIFICATIONS ..............3 2.1 Model Configuration and specifications ............... 3 2.2 General specifications ..................4 Chapter 3: OPERATION ................6 3.1 Initial inspection and setup ................... 6 3.2 Connection ...................... - Page 6 Chapter 7: SERIAL INTERFACE OPTION ..........14 7.1 Introduction ...................... 14 7.2 Command String Structure ................14 7.3 Advanced Programming - Software Drivers ............15 7.3.1 Determining the PRS Configuration ............ 15 7.3.2 Instrument Initialization ..............15 7.3.3 Source Impedance ................16 Chapter 8: MAINTENANCE ..............
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Page 7: Chapter 1: Introduction
PRS Series Chapter 1 INTRODUCTION The PRS Series (Figure 1.1) is a broad line of high low currents are passed through them. This is most precision manual and programmable decade substi- often the case when only minute test currents are tuters. -
Page 8: General Specifications
PRS Series This page is intentionally left blank. INTRODUCTION... -
Page 9: Figure 2.1 Typical Operating Guide Affixed To Unit
PRS-200 Series PRS SERIES OPERATING GUIDE CONSULT INSTRUCTION MANUAL FOR PROPER INSTRUMENT OPERATION Resistance Type: Metal film. Range: 0 to 9,999,999 Ω, in 1 Ω steps. Accuracy: ±(0.1% + 30 mΩ), after subtraction of zero setting resistance; traceable to NIST. -
Page 10: Chapter 3: Operation
PRS Series Chapter 3 OPERATION 3.1 Initial inspection and setup 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. This instrument was tested and carefully inspected before shipment. -
Page 11: Dial Setting
PRS Series If the effect of tens of microvolts is significant to your application, connect to the instrument with low-ther- Connect any desired instrumentation to the mal-emf materials only. Copper wire and copper al- front panel binding posts. The GND termi- loys are recommended;... -
Page 12: Chapter 4: Bcd Interface Option
PRS Series Chapter 4 BCD INTERFACE OPTION 4.1 BCD Programming connector as shown in Table 4.1. Note that both pins must be set. The REMOTE and LOCAL led’s will PRS units, with BCD interface option, come with a respond accordingly. Once the PRS is set to Re- BCD (Binary Coded Decimal, 1-2-4-8 coding) re- mote, the thumbwheel switches become disabled, and mote programming capability accessed through the... -
Page 13: Table 4.2 Bcd Input Connector Pin Assignments
PRS Series P in B C D C ode Fu n c ti on D e s c r i ption N o. W e ig ht 0 .0 1 -0 .0 9 Ω 0 .1 -0 .9 Ω l-9 Ω 1 0 -9 0 Ω... -
Page 14: Chapter 5: Ieee Interface Option
PRS Series Chapter 5 IEEE INTERFACE OPTION 5.1 Introduction Decimal SWITCH Decimal SWITCH Address SETTINGS Address SETTINGS 5-4-3-2-1 5-4-3-2-1 The IEEE interface option makes the PRS-200 a 0-0-0-0-0 1-0-0-0-0 IEEE-488.2-1987 and SCPI 1994.0 compatible instru- 0-0-0-0-1 1-0-0-0-1 ment. 0-0-0-1-0 1-0-0-1-0 0-0-0-1-1 1-0-0-1-1 The IEEE STD 488.2 covers the electrical and me-... -
Page 15: Gpib Test Keyboard
CAL switch is in the REMOTE position. Remote ICS_GPIBkybd_Install.zip from IET Labs Tech control may be dropped by issuing an IEEE GTL com- Support. mand. Dropping remote sets the PRS output to the value set on the front thumbwheel switches. See Unzip the file and follow instructions to install. -
Page 16: Chapter 6: Serial Interface Option
PRS Series Chapter 6 SERIAL INTERFACE OPTION 6.1 Introduction Direction RS232 Signal Name In / Out Chassis The SERIAL option adds RS-232C and SCPI 1994.0 Send Data capability to the PRS series instruments. The SCPI " Receive Data standard provides a tree like series of standard com- Request to Send "... -
Page 17: Serial Test Keyboard
This program works with ICS, Measurement SOURce:DATA resistance string Computing and National Instruments controllers. To implement, request a download of: ICS_Serkybd_Install.zip, from IET Labs Tech Support 8-25-05 SERIAL INTERFACE OPTION... -
Page 18: Chapter 7: Serial Interface Option
PRS-200 Series Chapter 7 PROGRAMMING Introduction For example: Value Command 600,567.9 Ω Ω Ω Ω Ω SOURce:DATA 0006005679 PRS-200 units equipped with IEEE or SERIAL op- 2,700,000 Ω Ω Ω Ω Ω SOURce:DATA 0027000000 tions implement a consistent SCPI interface. A SCPI command reference is included in Appendix A. -
Page 19: Advanced Programming - Software Drivers
Open Cicuit / Short Circuit Option: not equipped In our example above, the Manufacturer section con- Open Circuit option present tains “IET Labs”, the Model section contains “PRS- Short Circuit option present 200-F-6-100m-0-0”, the Serial Number section “D6- Both OC/SC present 0211201”... -
Page 20: Source Impedance
PRS-200 Series Read the IDN string from the PRS Example 1: iValue=iValue*(1/iMin) Parse the IDN string to extract the IDN String Model iValue=123.51*(1/.1); or iValue = 1235.1 (second) section. Parse this further to determine: iValint=int(iValue); or iValint = 1235 let iType= type of device (R,L,C,RTD; enum 0-3) Example 2: let iModel = model (200,201,202;... -
Page 21: Chapter 8: Maintenance
IET Labs for information. MAINTENANCE... -
Page 22: Scpi Command Reference
PRS Series Appendix A SCPI COMMAND REFERENCE SCPI builds on the programming syntax of IEEE-488.2 SCPI is an acronym for “Standard Commands for to give the programmer the capability of handling a Programmable Instruments”. For additional informa- wide variety of instrument functions in a common tion or an on-line copy of this standard, see: manner. - Page 23 PRS Series Notes & Short Keyword Parameter Form Form Commands SYSTem System Address :COMMunicate :GPIB IEEE option only :MODE SINGle | DUAL | SECondary :SERial SERIAL option only :EXTernal 0|1 or OFF|ON [0] :BAUD <numeric value> [9600] :PARity EVEN | ODD | [NONE] :BITS 7 | [8] :SBITs...
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Page 24: Ieee-488.2 Common Commands
PRS-202 Series Appendix B IEEE-488.2 COMMON COMMANDS The PRS Series is compliant with the complete com- such as SRQ and TRG are implemented in the con- mand set defined in the IEEE-488.2 specification. As troller but have no affect on the operation of the in- an output device, the required input related commands strument.