HP 339A - Page 117

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."