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34420A-04

SERVICE NOTE

34420A - Nano Volt/Micro Ohm Meter

Serial Numbers: US36000000 - US36001171

Inaccurate temperature readings

To Be Performed By: Agilent-Qualified Personnel

Parts Required:

P/N Description Quantity

34420-69211 Rebuilt 34420A Product (exchange unit) 1

Note:

The 34420A may be returned to factory for an update.

Situation:

THIS SERVICE NOTE ONLY APPLYS TO UNITS USED FOR

MEASURING TEMPERATURE.

When using certain temperature sensors and taking many temperature measurements that in-

clude certain temperature points, the 34420A will display a temperature that is 8, 4 or 2 de-

grees lower than the actual temperature for those key points. The locations of these points

are dependent on the type of temperature sensor being used and the temperature measuring

method employed.

Continued

ADMINISTRATIVE INFORMATION

SERVICE NOTE CLASSIFICATION:

MODIFICATION RECOMMENDED

ACTION

CATEGORY:

IMMEDIATELY

ON SPECIFIED FAILURE

AGREEABLE TIME

STANDARDS:

LABOR 0.5 Hours

LOCATION

CATEGORY:

CUSTOMER INSTALLABLE

ON-SITE

SERVICE CENTER

SERVICE RETURN

INVENTORY: SCRAP

SEE TEXT

USED RETURN

PARTS: SCRAP

SEE TEXT

AVAILABILITY:PRODUCT'S SUPPORT LIFEAGILENT RESPONSIBLE UNTIL: January 2001

AUTHOR: REM ENTITY: 0940 ADDITIONAL INFORMATION:

PRINTED IN U.S.A.

SUPERSEDES: NONE

DATE: Janurary 1999

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Inhaltsverzeichnis

Seite 1 - 34420A-04

34420A-04SERVICE NOTE34420A - Nano Volt/Micro Ohm MeterSerial Numbers: US36000000 - US36001171Inaccurate temperature readings To Be Performed By: Agil

Seite 2

Solution / Action: These low readings are caused by a math error in the voltage to temperature conversion firmwareroutines. Units with firmware code

Seite 3

If the unit has 04-XX-XX or less firmware code then the unit can be replaced or updated. If unit is still under the standard warranty, replacement is

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