8713B-02
SUPERSEDES: None
DATE: June 1996
8713B Network Analyzers
Serial Numbers:
8711B-02 Serial Numbers: GB35100000 / GB35100176 - except S/N 0175
8712B-02 Serial Numbers: GB35100000 / GB35100145 - except S/N 0143
8713B-02 Serial Numbers: GB35100000 / GB35100200
8714B-02 Serial Numbers: GB35100000 / GB35100178
Intermittent Frac-N cables; GB Prefix only
To Be Performed By: Agilent-Qualified Personnel
Parts Required:
Part No. Qty.
8120-2587 3
8120-2586 1
1 of 2
AUTHOR: JV
ENTITY: 5320
© 1996 AGILENT TECHNOLOGIES
PRINTED IN U.S.A.
SERVICE NOTE
ADMINISTRATIVE INFORMATION
MODIFICATION RECOMMENDED
SERVICE NOTE CLASSIFICATION:
ACTION
CATEGORY:
LOCATION
CATEGORY:
CUSTOMER INSTALLABLE
ON-SITE
SERVICE CENTER
AGILENT RESPONSIBLE UNTIL: June 1998
ADDITIONAL INFORMATION:
IMMEDIATELY
ON SPECIFIED FAILURE
AGREEABLE TIME
AVAILABILITY:
PRODUCT’S SUPPORT LIFE
RETURN
SCRAP
SEE TEXT
SERVICE
INVENTORY:
RETURN
SCRAP
SEE TEXT
USED
PARTS:
STANDARDS:
Labor 1.0 Hour
Continued
Page 2 Service Note 8713B-02
Situation:
QMD has discovered that the PHONO cables used in the A3 Frac-N board assembly
were improperly made and may be intermittent. All 871xB instruments shipped prior to
mid-January, 1996 with a “GB” serial prefix within the above range may be affected.
These units are generally shipped to European destinations.
These cables are the four RCA phono cables. Examination of these parts reveals insufficient solder at the tips of the connector. Since there are several cables per board, the
failure symptoms may be varied. The RF output of analyzer may not change frequency,
the trace may be noisy, or excess spurs may exist.
Solution/Action:
For any analyzer in the above range, it is recommended that all four cables on the A3
Frac-N assembly be replaced if any are found to be a problem. There are two different
lengths involved; three of one length and one of another. Make sure that each end of
each cable is fully seated on the connector.
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