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6
of
8
MANUAL CHANGES
Model
339A
CHANGE
NO.
2S
(effective
on
serial
nambers
202SA0243S
to
2025A0278B).
Pag*
8-7,
Tabla
1-3.
Delete
all
information
on
A3C202, A3C203,
A3C204, A3CR200,
and
A3CR201.
Pag*
8-1518-16. Figara 8-14.
Delete
schematic symbols,
values,
and
designators
for
C202, C203, C204, CR200,
an<J
CR201.
(applies to
al)
instrumental
(affective
oa
serial
namber
2025A02786
and
above)
Pago
8-7,
Table
8-3.
Add
the following reference designators,
part
numbers, and
values:
A3C204
0160-2201
51
pF
A3CR200
1901-0040
Diode
A3CR201 1901-0040
Diode
Page
8-1518-16,
Figara
8-14.
Replace
C204,
CR200
and
CR201
where
they
were
in
the
schematic
originally.
Tl^^nd
result
is
to
delete
C202
and
C203.
ClflWGE
NO. 28
(applies to
all
instruments!.
Pago
6-13.
Tablo
8-3.
Change
the
description
of
part
number
00339-04004
from
'KNOB, TENS'
to
"
KNOB. UNITS'
.
Change
the description
of
part
number
00339-04005
from
'KNOB,
UNITS"
to
'KNOB, TENS".
CHANGE
NO.
27
(applies to
all
instnimsnts)
(affective
oa
serial
namber
1730A02716
and
above).
Page
6-12,
Table
8-3.
Just
above
the
listing
of
W4
add
part
number
00339-61915.
'SWITCH
ASSY.'
and
move
the
reference
designator
W4
up
to
the
new
listing.
Just
above
the
listing
of
W5
add
parr
number
00339-61916.
"SWITCH
ASSY."
and
move
the reference designator
W5
up
to
the
new
listing.
Page
8-13,
Table
8-3.
Just
above
the
listing
of
W10
add
part
number
00339-61917.
"SWITCH
ASSY."
and
move
the
reference
designator
W10
up
to the
new
l
:
sting.
CHANGE
NO.
28
(effective
oa
serial
naeibers
2025A02646
to
2025A03718).
Page
6-4,
Table
6-3.
Change
the
part
number
and
value
of
the
reference designators
below
as
listed:
2C4
from
0160-0341 640pF
to
01
60-2940 470pF
A2C5
from
0160
2201
5
1
pF
to
01 40-01
92 68pF
Page
8-1918-20. Figure 8-18.
Change
the value
of
C4
from
640pF
to
470pF
and
that
of
C5
from
5lpF
to
68pF
(applies to
all
instruments!
(affective
oe
serial
number
2025A03716
and
above)
Page
6-4.
Table
6-3.
Change
the
part
number
and
value
of
the
reference designators
below
as
listed:
A2C4
01
60
2940 470pF
to
0140-0234 500pF
A2C5 0140-0192
68pF
to
0160-3083
62pF
Pago
8-1918-20. Figure 8-16.
Change
the
value
of
C4
from
470pF
to
500pF
and
that of
C5
from
68pF
to
62pF
This
change
improves,
1
(gain
above 100kHz, and 2)80kHz
filter
response
Changing
A2R6
is
part
of this
update.
See change
no.
29.
lapplios to
all
instruments)
laffactiva
on
sariai
number
2025A02646
and ahova)
Pago
8-4,
Tabla
6-3.
Change
the
part
number
and
value
of
A2C1
5
from
0160-2201
5
1
pF
to
01
60-2204
lOOpF.
Pago
8-19)8-20, Figara 8-16.
Change
the value
of
Cl
5
from
51pF
to
lOOpF.
Pago
8-13.
Tablo
8-3.
Change
the
part
numbers and
descriptions
of
the following items:
from 21
10-0465
to
21
10-0564
FUSEHOLDER
from
2110-0467
to
21
10-0565
CAP,
FUSEHOLDER
from 21
10-0470
to
21
10-0569
NUT,
FUSEHOLDER
CHANGE
NO. 29
(applies to
all
instnimsnts)
(affective
oa
sariai
number
2025A03718
and
abova).
Page
6-13,
Tabla
6-3.
Change
the
part
number
of
W7
from
00339-61607
to
00339-61612
and
that
of
W7S10
from
3101-1656
to
3101-2216.
The
description
for
W7S10
should
read
"
SWITCH POWER"
.
Below
that
listing
delete
all
information
on
part
number
5040-5932
and add
8120-0593. "CABLE
SHIELD".
Pago
8-14,
Tabla
8-3.
Change
the
part
number
of
MP1
from
00339-00201
to
00339-00211
and
that
of
MP2
from
00339-00202
to
00339
0021
2.
Pago
6-5,
Table
8-3.
Change
the
part
number
and
value
for
A2R6
from
0698-4445,
5.76kl)
to
0698-3382.
5.49kS2.
Page
8-1918-20. Figure 8-16.
Change
the
value
of
R6
from
5.76kfl
to
5
49k£2.
This
is
part of
the
change
to
improve,
1
1gain
above
1
00kHz, and
2!
80kHz
filter
response.
See change
no.
28.
CHANGE
NO.
30
lapplios to
all
instruments)
laffactiva
on
sariai
number
2025A03786
and
above).
Pago
6-11,
Table
8-3.
Change
the
part
number
3100 3423
to
3100-1663.
When
°N
3
1
00-
3423
went
from
hill-and-valley to a
unidex
index-
er
it
was
necessary
to
change
part
numbers. The
new
and
old
PNs
are
completely
interchangeable.
CHANGE
NO.
31
(applies
to
all
instruments!
(effective
oe
serial
nember
2025A02716
and
abova).
Page
6-6.
Table
6-3.
Change
the part
number
and
value
of
A3C1
10
from
0140-0192, 68pF
to
01
40
01
90.
39pF
Page
6-9,
Table
6-3.
Add
cable
assy
00339-6161
3
at
the
end
of the
listings
for
the
A3
board.
Page
8-1318-14, Figere 8-13.
Change
the
value
of
Cl 10
from
68oF
to
39pF.
These changes improve
range-to-range accuracy.
Page
6-14,
Table
6-3.
Add
part
number 5041-3124,
PUSH ROD
CHANGE
NO.
32
lapplies to
all
instruments!.
Page
6-7.
Table
6-3.
Change
the part
number
of
A3Q100
from
1
855-0360
to
1855-0458.
This
change
is
being
made
because
PN 1855-0360
is
being
discontinued
by
the
vendor
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