Inne IET 1433 User Manual
♦ PRECISION INSTRUMENTS FOR TEST AND MEASUREMENT ♦
1433 SERIES
High-Accuracy
Decade Resistor
User and Service Manual
1433 im/December, 2003
IET LABS, INC.
formerly manufacturer by
GenRad
Copyright © 2003 IET Labs, Inc.
534 Main Street, Westbury, NY 11590
TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988
www.ietlabs.com
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. IET shall not be liable for any indirect, special, or consequential
damages, even if notice has been given to the possibility of such damages.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTIBILITY OR FITNESS FOR
ANY PARTICULAR PURPOSE.
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Contents
WARRANTY ...........................................................................................iii
WARNING ............................................................................................... v
CAUTION................................................................................................ v
Chapter 1
INTRODUCTION .......................................................................... 1
1.1 Product Overview .................................................................. 1
1.2 Accessories Included ............................................................. 2
1.3 Accessories/Options Available ............................................... 2
Chapter 2
SPECIFICATIONS ......................................................................... 3
Chapter 3
OPERATION ................................................................................... 5
3.1 Installation .............................................................................. 5
3.2 Connections ........................................................................... 5
3.3 Dial Readout .......................................................................... 5
3.4 Principles of Operation .......................................................... 5
Chapter 4
MAINTENANCE............................................................................ 8
4.1 Customer Service ................................................................... 8
4.2 Instrument Return .................................................................. 8
Figures
Figure 1.1 1433 Series High Accuracy Decade Resistor ........................ 1
Figure 3.1 A simplified equivalent circuit for a decade box with the low (L)
terminal tied to case ............................................................... 5
Figure 3.2 Equivalent three terminal circuit for a decade box with neither
terminal tied to case ............................................................... 6
Figure 3.3 Approximation of distributed capacitance effects .................. 7
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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 (> 45 V) ARE USED, TAKE ALL MEASURES TO
AVOID ACCIDENTAL CONTACT WITH ANY LIVE COMPONENTS.
USE MAXIMUM INSULATION AND MINIMIZE THE USE OF BARE
CONDUCTORS WHEN USING THIS INSTRUMENT.
Use extreme caution when working with bare conductors or bus bars.
WHEN WORKING WITH HIGH VOLTAGES, POST WARNING SIGNS AND
KEEP UNREQUIRED PERSONNEL SAFELY AWAY.
CAUTION
DO NOT APPLY ANY VOLTAGES OR CURRENTS TO THE TERMINALS OF THIS
INSTRUMENT IN EXCESS OF THE MAXIMUM LIMITS INDICATED ON
THE FRONT PANEL OR THE OPERATING GUIDE LABEL.
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