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PRECISION INSTRUMENTS FOR TEST AND MEASUREMENT
PRS200 im/July2005
IET LABS, INC.
534 Main Street, Westbury, NY 11590
PRS-200 SERIES
High Precision
Manual or Programmable
Decade Resistance Substituters
Operation Manual
Copyright © 2005 IET Labs, Inc.
TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-
5988
♦
www.ietlabs.com
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Table of Contents
Summary of Contents for iET PRS-200 Series
- Page 1 PRS-200 SERIES High Precision Manual or Programmable Decade Resistance Substituters Operation Manual Copyright © 2005 IET Labs, Inc. PRS200 im/July2005 IET LABS, INC. www.ietlabs.com 534 Main Street, Westbury, NY 11590 TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-...
- Page 3 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.
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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 CONTENTS ......................iii FIGURES ......................iv TABLES ....................... iv Chapter 1: INTRODUCTION ................1 Chapter 2: SPECIFICATIONS ................3 2.1 Model Configuration and Specifications ............... 3 2.2 General Specifications ....................4 Chapter 3: OPERATION .................. - Page 6 Figures Figure 1.1 High Precision Manual or Programmable Decade Resistance Substituter ........1 Figure 2.1 Typical OPERATING GUIDE Affixed to Unit ................. 5 Tables Table 4.1 BCD INPUT Connector ......................8 Table 4.2 BCD INPUT Connector Pin Assignments ................9 Table 5.1 IEEE-488 Bus Functions .......................
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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: Chapter 2: Specifications
Use maximum insulation and minimize the use of bare conductors. b) Remove power when adjusting switches. c) Post warning signs and keep personnel safely away. IET LABS, INC. • 534 Main Street, Westbury, NY 11590 • (516) 334-5959 • (800) 899-8438 CAGE CODE: 62015 PRSBLBL/pc/p8/PRS201IEEE/04-22-99;13... -
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 front panel binding posts. The GND termi- mal-emf materials only. Copper wire and copper al- 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
Comments 10016-5997 U.S.A. Source Tel: +1 212 419 7900 Handshake implemented Acceptor Other tutorials are available on-line; consult IET for Included Handshake additional information. A software GPIB “keyboard” Remote, Local Included may be requested from IET to perform elementary Service Request commands for training and testing. -
Page 15: Bus Set-Up Procedure
PRS-200 Series 5.4 Controlling the Programmable Table 5.2 Bus Address Switch Settings Impedance Substituter Decimal SWITCH Decimal SWITCH Address SETTINGS Address SETTINGS 5-4-3-2-1 5-4-3-2-1 5.4.1 Preparation 0-0-0-0-0 1-0-0-0-0 0-0-0-0-1 1-0-0-0-1 0-0-0-1-0 1-0-0-1-0 After performing any necessary initialization related 0-0-0-1-1 1-0-0-1-1... -
Page 16: Testing Programming
For a second example, the command strings for the open circuit is desired, these characters may be tested following resistance settings for a unit with 5 decades to determine if they produce an open circuit, or IET and .01 Ω minimum steps are as follows: may be consulted. -
Page 17: Dos Programming (Legacy)
PRS-200 Series This program first initializes the controller, then sets PO resistance string the device to the REMOTE and LISTEN modes, then outputs a command string provided by the op- where the resistance string is constructed as described erator to the device, and finally sets the device to the above in Section 4.4.2. - Page 18 PRS-200 Series 100 '********************************************************************* 110 '* SAMPLE PRS-200 SERIES IEEE-488 COMMAND PROGRAM 120 '* 130 '* MX3 140 '********************************************************************* 150 CLEAR 20000, 40000! 160 CLS : KEY OFF 170 ' 180 'This program let's you write a device dependent command string 190 'to any device number.
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Page 19: Chapter 6: Maintenance
IET Labs, or by a certified calibration laboratory. If to subtract it from the remaining measurements. This the user should choose to perform this procedure, then can be automatically done in many instruments which the considerations below should be observed.
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