IET Labs 1433-04, 1433-01, 1433-08, 1433-06, 1433-09 User And Service Manual
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♦ PRECISION INSTRUMENTS FOR TEST AND MEASUREMENT ♦
1433 SERIES
High-Accuracy
Decade Resistor
User and Service Manual
Visit www.ietlabs.com for manual revision updates
1433 im/October 2018
Effective for serial numbers beginning with “E”
IET LABS, INC.
Copyright © 2018 IET Labs, Inc.
www.ietlabs.com
Email: info@ietlabs.com
TEL: (516) 334-5959 • FAX: (516) 334-5988
IET LABS, INC.
www.ietlabs.com
Email: info@ietlabs.com
TEL: (516) 334-5959 • FAX: (516) 334-5988
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 specifi cations. 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 specifi cations 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 MERCHANTABILITY OR
FITNESS FOR ANY PARTICULAR PURPOSE.
1433 Series
iTable of Contents
1433 Series
Dangerous voltages may be present inside this instrument. Do not open the case
HIGH VOLTAGES MAY BE PRESENT AT THE TERMINALS OF THIS INSTRUMENT
WHENEVER HAZARDOUS VOLTAGES (> 45 V) ARE USED, TAKE ALL MEASURES TO
WARNING
OBSERVE ALL SAFETY RULES
WHEN WORKING WITH HIGH VOLTAGES OR LINE VOLTAGES.
Refer servicing to qualifi ed personnel
AVOID ACCIDENTAL CONTACT WITH ANY LIVE COMPONENTS.
USE MAXIMUM INSULATION AND MINIMIZE THE USE OF BARE
CONDUCTORS WHEN USING THIS INSTRUMENT.
WHEN WORKING WITH HIGH VOLTAGES, POST WARNING SIGNS AND
Use extreme caution when working with bare conductors or bus bars.
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.
ii Table of Contents
Contents
Chapter 1 Introduction ..............................................................................1
1.1 Product Overview ................................................................................................. 1
Chapter 2 Specifi cations ...........................................................................2
Decade Specifi cations .................................................................................................... 2
Chapter 3 Operation ..................................................................................5
3.1 Initial Inspection and Setup .................................................................................. 5
3.2 Connection ............................................................................................................ 5
3.2.1 General Considerations ............................................................................... 5
3.2.2 Electrical Considerations ............................................................................ 5
3.2.3 Four-Wire Kelvin-Lead Connections ......................................................... 6
3.2.4 Thermal emf Considerations ....................................................................... 6
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3.3 Dial Setting ........................................................................................................... 6
Chapter 4 Maintanence ..............................................................................7
4.1 Preventative Maintenance ..................................................................................... 7
4.2 Calibration Interval ............................................................................................... 7
4.3 General Considerations ......................................................................................... 7
4.4 Calibration Procedure ........................................................................................... 8
4.5 Schematic .............................................................................................................. 8
4.6 Replaceable Parts List ........................................................................................... 9
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