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iii

SAFETY PRECAUTIONS

The following general safety precautions must be observed during all phases of operation, service, 
and repair of this instrument. Failure to comply with these precautions or with specifi c WARNINGS 
elsewhere in this manual may impair the protection provided by the equipment. Such noncompliance 
would also violate safety standards of design, manufacture, and intended use of the instrument. 

IET Labs assumes no liability for the customer’s failure to comply with these precautions.

This is an indoor use product.

DANGEROUS PROCEDURE WARNINGS

Comply with all WARNINGS - Procedures throughout in this manual and instructions on the 
instrument prevent you from potential hazard. These instructions contained in the warnings must 
be followed.

BEFORE APPLYING POWER
Verify that all safety precautions are taken. Make all connections to the instrument before applying 
power. Note the instrument’s external markings described under “Safety Symbols”.

     • DO NOT Operate in an Explosive Atmosphere

     • Do not operate the instrument in the presence of infl ammable gasses or fumes 
     • Operation of any electrical instrument in such an environment clearly constitutes a safety  
hazard
     • Use Caution around live circuits and whenever hazardous voltages > 45 V are present
     • Operators must not remove instrument covers 
     • Component replacement and internal adjustments must be made by qualifi ed 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.

To  avoid  the  danger  of  introducing  additional  hazards,  do  not  install  substitute  parts  or  perform 
unauthorized modifi cations to the instrument.  

Return the instrument to an IET Labs for service and repair to ensure that safety features are maintained 
in operational condition.

Summary of Contents for SRC-10T-Tnetwork

Page 1: ...il info ietlabs com TEL 516 334 5959 FAX 516 334 5988 www ietlabs com IET LABS INC SRC Tnetwork Resistance Standard User and Service Manual Copyright 2022 IET Labs Inc Visit www ietlabs com for manual...

Page 2: ...PRECISION INSTRUMENTS FOR TEST AND MEASUREMENT Email info ietlabs com TEL 516 334 5959 FAX 516 334 5988 www ietlabs com IET LABS INC...

Page 3: ...t 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 speci cations shall void this warranty IET shall n...

Page 4: ...2002 96 EC This product complies with the WEEE Directive 2002 96 EC marking requirements The a xed label indicates that you must not discard this electrical electronic product in domestic household w...

Page 5: ...e taken Make all connections to the instrument before applying power Note the instrument s external markings described under Safety Symbols DO NOT Operate in an Explosive Atmosphere Do not operate the...

Page 6: ...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 w...

Page 7: ...3 3 Thermal emf Considerations 5 3 4 Environmental Conditions 5 3 4 1 Operating Temperature 5 3 4 2 Storage Temperature 5 3 5 Shipping and Handling 5 Chapter 4 Maintenance 7 4 1 Maintainability and R...

Page 8: ...vi...

Page 9: ...to the positive negative and guard terminals of the megohmmeter The ratio of the resistors then determines the e ec tive resistance value that will actually be displayed by the megohmmeter The advanta...

Page 10: ...2 SRC Tnetwork 2 Specifications Figure 1 1 SRC Tnetwork Standard Resistor 100 TW RESISTANCE STANDARD MODEL SRC 100T T network SOURCE OUTPUT CENTER TAP GUARD GND...

Page 11: ...ts for Source Output and Guard 1 binding post for Ground and one bnc for Center Tap Dimensions 9 cm W x 11 5 cm L x 5 cm H 3 5 x 4 5 x 2 Weight 0 45 kg 1 lbs Operating temperature range 55 to 70 C 80...

Page 12: ...4 SRC Tnetwork 4 Specifications Figure 1 1 Typical Operating Guide a xed to the SRC 100T Tnetwork...

Page 13: ...ctrometer or megohmmeter such as the IET 1865 Plus 1865 Plus Connections When connecting to the IET 1865 Plus remove the shorting link between the GND and Guard Terminal and connect the SRC 100T as sh...

Page 14: ...temperature variation 3 3 2 Storage Temperature The SRC Tnetwork should be maintained within the storage temperature range of 0 C to 40 C to retain its accuracy within the speci ed limits 3 4 Shipping...

Page 15: ...f an SRC Tnetwork is employed as a stand alone device the following should be observed Calibration Interval General Considerations Required Equipment Calibration Procedure 4 3 1 Calibration Interval T...

Page 16: ...or direct measurements 4 3 4 Calibration Procedure To calibrate an SRC Tnetwork proceed as follows 1 Set up the calibration equipment in the resis tance measurement mode 2 Measure R1 R2 and R3 The bnc...

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