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MANUAL CHANGES
Page
7
of
8
el
339A
Pag*
8-8.
Table
8-3.
Add 'SOCKET, 14
PIN
1C', part
number
1
200-0638
to
the replaceable parts
list
at
the
end
of
the
listings
for
the
A2
board.
Page
8-5.
Table
8-3.
Add
"HOLD
DOWN
SPRING',
part
number
1460-1 581
to
the replaceable parts
list
after
the
listing
of
A2K1
.
Prior
to
this
change
this
part
could only be ordered as
part of
the
relay.
CHANGE
NO. 33
(applies ta
all
ieetrumental
(effective
sa
tarial
a
amber
2025A03571
and
above).
Page
8-10.
Table
8-3.
Change
the part
number
of
A4U2
and
A4U4
from
1820-0427
to
1826-0934.
A
seperate
PN
for
Signetics part
was
established
because
PN
1
820-0427
will
no
longer give the
fundamental
rejection
required
by
the
339A.
CHANGE
NO.
34
(applies te
ail
inatrumental.
8-6.
Table
8-3.
Change
the
part
number
of
A3C
1
6 and
A3C
1
7
from 01
60-3622
to
01
50-0084. The
value
does
not
change.
Change
the part
number
and
value
of
A2R35
from
2100-0567,
2k!7 to
2100-3252.
5kfl.
CHANGE
NO.
35
(applies to
ail
iastnuaaatsl.
Page
6-3,
Table
6-3.
Change
the
part
number
of
A1
from
00339-66501
to
00309-665
1
1
.
Page
8-4,
Table
6-3.
Change
the
part
numbers
of
the
components
listed
below:
A1S6
from
00339-61902
to
00339-61906
A1S7
from
00339-61903
to
00339 61907
A1S8
from
00339-61904
to
00339-61908
A2
from
00339-66502
to
00339-6651
2
Add
to
the description
of
part
number 3100-3421
(under A-1S6I
'MULTIPLIER". Change
the description
of
A1S7
from
"UNITS"
to
'
TENTHS" Add
to
the description
of part
number
3
1
00-3422
(under
A
1
S
7
)
'
TENTHS"
Change
the description
of
A
1
S8
from
"TENTHS"
to
"UNITS".
t
g
6-6.
Table
8-3.
Change
the
part
number
of
A2
from
339-66503
to
00339-66513.
Page
6-9,
Table
8-3.
Change
the
part
numbers
of
the
components
listed
beiow
A3S1
from
00339-61905
to
00339-61901
A3S2
from
00339-61906
to
00339-61902
A3S3
from
00339-61907
to
00339-61903
A3S4
from
00339-61908
to
00339-61904
A3S5
from
00339-61909
to
00339-61905
Page
8-11.
Table
6-3.
Change
the part
number
for
A5S9
from
00339-61901
to
00339-61909.
Page
6-13.
Table
8-3.
Delete
the part
number
0370-2990 KNOB,
RND
W/BAR.
Page
6-14,
Table
8-3.
Change
the
part
number
of
MP16
from
00339-00606
to
00339-00616.
Add
the
part
number
5041 0531. KEY
CAP.
CHANGE
NO.
38
(applies te
all
instrumental
(affective
ee
serial
number
1730A01358
and
abevel.
Page
5-9.
Table
8-3.
Change
the
part
number
and
value
of
A4R2
from
0757-0472, 200kQ
to
0698-4211,
1
58kQ.
At
the
bottom
of
the
page,
change
the
note
to
read
"
with
serial
numbers
1730A00196
to
1730A00266."
Page
8-17, Figare 8-15.
Change
the value
of
R2
(feedback on
U1I
from
200k
to
1
58k.
Page
8-10,
Table
8-3.
Change
the following part
numbers and
values:
A4R21
from
0698-4486
24.9k
to
0698-3243
178k
A4R22
from
0698-4486
24.9k
to
0698-3243
1
78k
A4R49
from
0757-0447
16.2k
to
0698-3228
49.9k
A4R51
from
0757-0447
16.2k
to
0698-3228
49.9k
A4R53
from
0757-0280
1.0k
to
0757-0273
3.01k
Page
8-17, Figare 8-15.
Change
the values
on
the
schematic
as
listed
above.
These changes were
made
to
reduces
internally
generated
2nd
harmonic
distortion.
These changes slow
down
the
339A
response
as
shown
below:
Frequency
Pull-in
Time
8efare
Change
After
Change
10Hz
1Hz
100kHz
1
0
sec.
4
sec.
3 sec.
1
2 sec.
9 sec
6
sec.
CHANGE
NO. 37
(applies ta
ail
instruments)
(effective
an
serial
number
2025A03558
and
abovel.
Page
6-13.
Table
6-3.
Change
the following
part
numbers
as
listed:
Old
DUw
00339-04001
00339-04007
KNOB. DISTORTION
RANGE
00339-04002
00339-04008
KNOB. INPUT
RANGE
00339 04003
00339 04009
KNOB.
OSC
LEVEL
00339-04004
00339-04010
KNOB. UNITS
00339-04005
00339-0401
1
KNOB.
TENTHS
00339-04006
00339-04013
KNOB. MULTIPLIER
0 370-1099
0370 3054
KNOB. POINTER
0370-2994
0370-3055
KNOB. POINTER
CHANGE
NO.
38
(applies ta
all
instruments!.
In
Section
V,
Adjustments,
make
the following
changes:
Page
5-2.
Add
paragraph
5-14d
to
read,
"Set
the
frequency
multiplier
control to
each
range
and
verify that
the voltage
level at
A1TP8
remains
negative.
'
Paragraph
5-17.
Under
Equipment
Required,
Low
Distoition
Oscillator, (-hp-
Model
339AI
should read
"
l-hp-
Model 239AI."
Page
5-3,
Paragraph
5-1
7b.
On
the
listing
INPUT RANGE.
..3V,
the
"
3V"
should
have
listed
beside
it,
"
(
+
1
OdBV)"
.
Paragraph 5-17e
should
read,
"Set
the controls
of
the
239A
signal
source
to
obtain a
1
kHz
(
1
.0
x
Ik) signal.
Adjust
the
output
level
for
a
full
scale
meter
indication of
0
dBV
on
the instrument
under
test."
Add
a
paragraph
between
5-
1
7g and
5-
1
7h
that reads.
"
Set the
239A
level
controls
for
a
10dB
indication
on
the
3571 A
"
Page
5-4.
Paragraph
5-1
7k should
read,
"
Adjust
the
output
of
the
239A
for
a
full
scale
meter
indication
on
the
unit
under
test."
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