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E4435B-01B
S E R V I C E N O T E
Supersedes:
E4435B-01A
ESG “B” AP/DP Series RF Signal Generator
Serial Numbers: E4435B US39260101 – US39260175
Defective Divider chip on the Frac-N/Divider board (A24)
displays Error 511 "Output unleveled" and causes NO OUTPUT or
UNSTABLE OUTPUT below 1GHz.
To Be Performed By: Agilent-Qualified Personnel or Customer
Parts Required:
P/N: E4423-60019 Description: Frac-N/Divider Assembly Qty. 1
ADMINISTRATIVE INFORMATION
SERVICE NOTE CLASSIFICA TI ON:
MODIFIC ATION RECOMMENDED
ACTION [[]] IMMEDIATELY STANDARDS:
CATEGORY: [[]] ON SPECIFIED FAILURE LABOR: 0.0 Hours
LOCATION [[]] CUSTOMER INSTALLABLE SERVICE [[]] RETURN USED [[]] RETURN
CATEGORY: [[]] ON-SITE INVENTORY: [[]] SCRAP PARTS: [[]] SCRAP
[[]] SERVICE CENTER [[]] SEE TEXT [[]] SEE TEXT
AVAILABILITY: PRODUCT’S SUPPORT LIFE AGILENT RESPONSIBLE UNTIL:
[[]] AGREEABLE TIME
AUTHOR: [initials] PRODUCT LINE: 15
ADDITIONAL INFORMATION:
© AGILENT TECHNOLOGIES, INC. 2002
PRINTED IN U.S.A.
April 30, 2002
Page 1 of 4
Page 2 of 4 E4435B-01B
Situation:
The ESG-B AP/DP Family of Signal Generators has been
experiencing failures in the Frac-N board assemblies. This is
due to a failure in the divide-by-eight circuit of the Divider
chip A24U313 which causes the ESG to display Error 511
"Output unleveled". All ESG-B AP/DP units with the serial numbers
mentioned above may experience Error 511 along with UNSTABLE or
NO OUPUT below 1GHz. If this occurs, the A24 Frac-N/Divider
Assembly (E4423-60019) needs to be replaced. This assembly should
be ordered using part number E4423-69019 and should be treated
as a warranty repair. The defective assembly should then be
returned with documentation referencing this service note as
"Error 511".
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