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IfiH
MANUAL CHANGES
-hp-
MODEL
239A
DISTORTION
MEASUREMENT
SET
Manual
Part
Number
00339-90001
|
New
or
Revised
Item
ERRATA.
Page
4-11, Figure 4-12.
Change
the part
number
of the
SHIELD
(item
7)
from 1251-1073
to
1251-0173.
Page
4-11, Paragraph 4-25a.
The INPUT
RANGE
should be 0.1V,
not IV.
Page
4-12, Paragraph 4-26b.
The
sentence should
read,
"Connect
the
equipment
as
shown
in
Figure 4-
1
3 without
the
1
00
kfl
series
resistor."
Resistor
R67
and
R68
have
replaced
L3 and L4
for
the
prevention
pf
high frequency
oscillation.
CHANGE
NO.
2
(applies
to
instruments
with
serial
numbers
1730A00409
and
greater).
Page
6-5,
Table
6-3.
Change
A2R22
from 2100-0568
Resistor
Trimmer
100
11
10%
to
2100-3212
Resistor
Trimmer 200
11
10%.
Page
6-6,
Table
6-3.
Add
the following
part:
A2R43
0757-0400
Resistor
90.9
11
1
%
.1
25
W
TC
=
0
+
-
1
00
|
8-11/8-12, Figure 8-12.
Chapei
no
01
mfd.
tile
value of capacitor
Cl from
CHANGE
NO.
1
(applies
to
instruments
with
ferial
numbers
1730A00266
and
greater).
Page
6-9,
Table
6-3.
Delete
parts
A4L3
and
A4L4
hp^
part
number
9170-0894.
Page
6-10,
Table
6-3.
Add
the following
parts:
A4R67
0757-0407
Resistor
200
11
1
%
.
1
25
W
A4R68
0757-0407
Resistor
200
11
1%
.1
25
W
Page
8-17. Figure 8-15.
Delete
parts
L3 and L4 from
the
schematic.
February
20,
1
983
Page
8-19/8-20, Figure
8-16.
Change
the value of
resistor
R22
from
100
11
to
200
ij
on
the
schematic diagram.
Add
resistor
R43
as
shown
in
Figure
2.
Figure
2.
Resistoi
R43
has
been added and
the value of
R22
has
been changed
to
compensate
for
possible tracking errors
of
the photo-resistors
in
photo-module
El
NOTE
.Vo/
all
replacement photo-modules
wilt
work
property
in
in-
struments which
Jo
not have
this
modification.
CHANGE
NO.
3
(applies to
all
instruments).
Page
6-8.
Table
6-3.
Change R1
13 to
*R1
13
(selected
component).
Add
the following
padding
list
for
*
R
1
13:
0757-0442
0757-0449
0757-0453
0698-3499
Resistor
1
0
K
Resistor
20
K
Resistor
30.
1
K
Resistor
40.2
K
1%
1
25
W
F
TC
=0
i
100
1%
.125
W
F
TC
=
0±
100
1%
.125
W
F
TC
=
0
±
100
1
%
1
2
5
W
F
TC
=
0
±
1
00
Page
8-13/8-14, Figure 8-13.
Change
R113
to
*R113
and change
the
nominal
value
from 10
kll to
30.1
kll
on
the
schematic diagram.
Supplement
A
for
00339-90001
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