M
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A
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I
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D
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D
G
G
G
E
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–
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F
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C
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M
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C
C
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O
O
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R
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D
D
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R
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85962A-1201
S E R V I C E N O T E
Supersedes:
NONE
85962A
Instability in Sweep
Serial Numbers: Only as needed. To be performed when a variation at low end of spectrum is
observed. The variation is more dramatic between 5 and 15 mhz. In most cases the deviation is
between 1 and 2 db, extreme cases would exhibit themselves at 3 db and above. Perform this
change only if the variation is observed.
Noise at low end of sweep caused by impedence change of ALC circuit that
controls source output during blanking.
To Be Performed By: Agilent-Qualified Personnel Only
Parts Required:
P/N: 0160-7751 Description CS CE.010U 50B Qty. 2
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:
AUTHOR: [initials] PRODUCT LINE: [product line]
ADDITIONAL INFORMATION:
© AGILENT TECHNOLOGIES, INC. 2001
PRINTED IN U.S.A.
[[]] AGREEABLE TIME
January 11, 2002
Page 1 of 2
Page 2 of 2 [SN number here]
Situation:
Noise at low end of sweep caused by impedance change of ALC circuit that controls source output
during blanking.
Solution/Action:
Add two 0.01 microFarad capacitors (0160-7751) to RF Module #85961-63035-1 at the following
locations: One in parallel with C114 (470pF) capacitor (new R/D C222) and one in parallel with C128
(new R/D C223)
Documents Affected
85961-60035-1 from revision M to N
85961-60035-2 from revision B to C
See PCO 65406 for more information
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