HP 8690B User manual
MANUAl
CHANGES
r-
MANUAl
IDENTIFICATION-
Model
Number:
8690B
Date
Printed: May 1972
Part
Number:
08690-90018
This supplement contains important information for correcting manual errors and for adapting the manual
to
instruments containing improvements made after the printing
of
the manual.
To use this supplement:
Make all ERRATA corrections
Make all appropriate serial number related changes indicated in the tables below.
_Serial
Prefix
or
Number
T
Make
Manual
Changes_
1114A 1, 2
1124A 1 3
1143A02906 thru
1143A03055 1, 2, 4, 5
1202A03056 thru
1202A04045
1202A04046
thru
1202A04345
1202A04346 thru
1202A04585
~NEW
ITEM
ERRATA
Inside front cover:
1,
3-6
1,
3-7
1
3-8
,...-
Serial
Prefix
or
Number-,.--
Make
Manual
Changes_
1349A0458n thru
1349A05215 1,
3-9
1349A05216 thru
1349A05275 1,
3-10
1445A 1,
3-11
1513A05426 thru
1513A05545 1,
3-12
1513A05546 thru
1513A05605 1,
3-
13
It~~-
1513A05606 thru
1513A05695 1,
3-
14
1513A05696 thru
...
1513A prefix 1,
3-15
Insert new information regarding SAFETY, CERTIFICATION, and WARRANTY AND ASSISTANCE
immediately inside front cover
of
manual (new information sheet supplied in this Manual Changes
Supplement).
·Page
1-1, General Information:
Add the foilowing information preceding Paragraph l-1:
1-A.
SAFETY
CONSIDERATIONS
General
This
instrument
has
been
designed
and
tested
according
to
IEC
Publication
348,
"Safety
Requirements
for
Electronic
Measuring Appa-
ratus,"
and
has
been
supplied
in safe
cond~tion.
This
is
a
Safety
Class I
instrument.
Operation
BEFORE
APPLYING POWER,
make
sure
the
instrument's
ac
input
is
set
for
the
available
ac line voltage,
that
the
correct
fuse is installed,
and
that
all
normal
safety
precautions
have
been
taken.
Service
Although
the
instrument
has
been
designed in
Manual
change
supplements
are
revised
as
often
as
necessary
to
keep
manuals
as
current
and
accurate
as
possible.
Hewlett-Packard
recommends
that
you
periodically
request
the
latest
edition
of
this
supplement.
Free
copies
are
available
from
all
HP
offices.
When
requesting
copies
quote
the
manual
identification
information
from
your
supplement.
or
the
model
number
and
print
date
from
the
title
page
of
the
manual.
9 DECEMBER 1975
16 Pages
Printed
in
U.S.A.
HEWLETT
0
PACKARD
Mode!8690B
ERRATA
(Cont'd)
accordance
with
international
safety
standards,
the
information,
cautions,
and
warnings
in
this
manual
must
be
followed
to
ensure
safe
operation
and
to
keep
the
instrument
safe. Service
and
adjustments
should
be
performed
only
by
qualified service
personnel.
Adjustment
or
repair
of
the
opened
instrument
with
the
ac
power
connected
should
be
avoided
as
much
as possible and,
when
inevitable,
should
be
performed
only
by
a skilled
person
who
knows
the
hazard
involved.
Capacitors
inside
the
instrument
may
still
be
charged
even
though
the
instrument
has
been
disconnected
from
its
source
of
supply.
Make
sure
only
fuses
of
the
required
current
rat-
ing
and
type
(normal
blow,
time
delay,
etc.)
are
used
for
replacement.
Do
not
use
repaired
fuses
or
short
circuit
the
fuse holders.
Whenever
it
is likely
that
the
protection
has
been
impaired,
make
the
instrument
inoperative
and
secure
it
against
any
unintended
operation.
r
WARNING
1
If
this
instrument
is
to
be energized
through
an
autotransformer
(for
voltage
reduction),
make
sure
the
common
terminal
is
connected
to
the
earthed
pole
of
the
power
source.
BEFORE
SWITCHING ON
THE
INSTRUMENT,
the
protective
earth
terminals
of
the
instrument
must
be
connected
to
the
protective
conductor
of
the
mains
power
cord. The mains plug shall
only
be
inserted
in a
socket
outlet
provided
with
pro-
tective
earth
contact.
The
protection
must
not
be
2
HEWLETT
08690-900.1
negated
by
using an
extension
cord
(power
cable)
without
a
protective
grounding
conductor.
Any
interruption
of
the
protective
(grounding)
conductor,
inside
or
outside
the
instrument,
or
disconnection
of
the
protective
earth
terminal
is
likely
to
make
this
instrument
dangerous.
Inten-
tional
interruption
of
the
earth
ground
is
prohibited.
Servicing
this
instrument
often
requires
that
you
work
with
the
instrument's
protective
covers re-
moved
and
with
ac
power
connected.
Be very care-
ful;
the
energy
at
many
points
in
the
instrument
may,
if
contacted,
cause
personal
injury.
With
the
ac
power
cable
connected,
the
ac line
voltage is
present
at
the
terminals
of
the
power
line
module
and
at
the
LINE
power
switch.
Be
very
careful.
Bodily
contact
with
this
voltage
can
be
fatal.
BEFORE
SWITCHING ON THIS
INSTRUMENT,
make
sure
instrument's
ac
input
is
set
to
the
voltage
of
the
ac
power
source.
BEFORE
SWITCHING
ON
THIS
INSTRUMENT,
make sure
that
all devices
connected
to
the
instru-
ment
are
connected
to
the
protective
earth
ground.
BEFORE
SWITCHING
ON
THIS
INSTRUMENT,
make
sure
the
line
power
(mains)
plug
is
connected
to
a
three-conductor
line
power
outlet
that
has a
protective
(earth)
ground.
(Grounding
one
con-
ductor
of
a
two-conductor
outlet
is
not
sufficient.
BEFORE
SWITCHING
ON
THIS
INSTRUMENT,
make
sure
the
ac line fuse
is
of
the
required
current
rating
and
type
(normal-blow, time-delay,
etc.).
PACKARD
.8p!99-90018
3
SAFETY
This
instrument has been designed
and
tested according
to
IEC Publication 348,
"Safety Requirements for Electronic Measuring apparatus,"
and
has been supplied in
safecondition.
This
is aSafetyClass I instrument. To ensuresafeoperation
and
to
keep
the
instrument
safe, the information, cautions,
and
warnings
in
this
manual
must
be
heeded. Refer
to
Section I for general safety considerations applicable
to
this instru-
ment.
CERTIFICATION
The Hewlett-Packard Company certifies that this instrument was thoroughly tested
and
inspected
and
found
to
meetitspublishedspecifications when it was shippedfrom
the factory. The Hewlett-Packard Company further certifies
that
its calibration meas-
urements are traceable
to
the U.S. NationalBureau
of
Standards
to
the extentallowed
by the Bureau's calibration facilities, or
to
the calibration facilities
of
other Internq-
tional
Standards
Organization members.
WARRANTY AND ASSISTANCE
This
Hewlett-Packard product is warranted against defects in materials
and
work-
manship.
This
warranty applies for one year from the date
of
delivery. Hewlett-
Packardwillrepairorreplaceproductswhichprove
to
be
defective
during
the warranty
periodprovided they are returned
to
Hewlett-Packard.
No
other warranty is expressed
or implied.
We
are not liable for consequential damages.
Servicecontractsorcustomerassistance agreementsare availablefor Hewlett-Packard
products that require maintenance
and
repair on-site.
For any assistance, contact your nearest Hewlett-Packard Sales
and
Service Offzce.
HEWLETT'
PACKARD
Model 8690B
Model 8690B
ERRATA
(Cont'd)
Page
6-2, Table 6-1:
Change A2C3 to
HP
Part No. 0160-2675
C:
FXD
MICA
3900
pF
1%
300
VDCW,
Factory selected part.
Change A2R8
to
HP
Part No. 2100-0672
R:
VAR
COMP
2K
OHM
20% LIN 1/2W
A2R19
to
HP
Part No. 2100-0674 R: VAR
COMP
20K
OHM
20%
LIN 1/2W
A2R22
to
HP
Part No. 2100.0673 R: VAR
COMP
5K
OHM
20% LIN 1/2W
A2R23
to
HP
Part No. 2100-0673 R: VAR
COMP
5K
OHM
20% LIN 1/2W
A2R24 to
HP
Part No. 2100-0673 R: VAR
COMP
5K
OHM
20% LIN 1/2W
A2R25
to
HP
Part No. 2100-0672 R: VAR
COMP
2K
OHM
20%
LIN 1/2W
A2R28
to
HP
Part No. 2100-0676 R: VAR
COMP
50K
OHM
20% LIN 1/2W
Page
6-3, Table 6-1:
Change A2R30
to
HP
Part No. 2100-0673 R: VAR
COMP
5K
OHM
20% LIN 1/2W
A2R3l
to
HP
Part No. 2100-0673 R: VAR
COMP
5K
OHM
20% LIN 1/2W
Page
6-4, Table 6-1:
Change A3R53
to
HP
Part No. 2100-0674 R: VAR
COMP
20K
OHM
20% LIN 1/2W.
Page
6-7, Table 6-1:
A4XV6
HP
Part No. 1200-0062 SOCKET:TUBE 9 PIN.
Page
6-10, Table 6-1:
Add A8XV2 and A8XV3
HP
Part No. 1200-0053 SOCKET:TUBE 7 PIN.
Page
6-11, Table 6-1:
Add A9MP1, MP2,
HP
Part No. 1205-0011 Heat Sink.
Page
6-13, Table 6-1:
Change A11R2 to
HP
Part No. 2100-0675 R: VAR
COMP
25K
OHM
20% LIN 1/2W
A11R8
to
HP
Part No. 0757-0128 R: FXD MET FLM 200K
OHM
1%
w/2W
A11Rl8
to
HP
Part No. 2100-0675 R: VAR
COMP
25K
OHM
20%
LIN 1/2W
Page
6-14, Table 6-1:
Add A12XV1
HP
Part No. 1200-0062 SOCKET:TUBE 9 PIN
Page
6-15, Table 6-1:
Change
B1
to
HP
Part No. 3160-0056 recommended replacement.
Change
C1
and
C2
to
HP
Part No. 0160-0669
C:
FXD Mylar 2
mf
±10% 2000
VDCW
Page
6-16, Table 6-1:
Change F1
to
HP
Part No. 2100-0420 FUSE 0.032A 250V
Page
6-17, Table 6-1:
Change XF1 and XF2
to
HP
Part No. 2110-0464
Add
HP
Part No. 2110-0465 FUSEHOLDER
CAP
Add HP Part No. 2100-0467 NUT-HEX 1/2-28
Add
HP
Part No. 7120-4162 LABEL INFO
QTY
2
Add
HP
Part No. 7120-4163 LABEL INFO QTY 1
Page 6-18, Table 6-1:
Change
HP
Part No. 1400-0084 to:
HP
Part No. 2110-0464 FUSEHOLDER
Add
HP
Part No. 2110-0465 FUSEHOLDER
CAP
Add HP Part No. 2110-0467 NUT-HEX 1/2-28
4
Model8690B
08690-~00'rS
!
ERRATA
(cont'd)
Page 7-14
and
7-16,
Component
Identificati~n,
Assembly A9:
Substitute
the
attached A9 Component Identification board for
that
shown in the
8690B
Manu~
..
l
''
SHIELDED
Component Identification, Assembly
A9
Page 7-15, Figure 7-8:
Change
the
wire color code
of
the
wire between XA14 pin 6 and A9CR2, from @
to(D.
The wire color code
of
the
wire
at
T2
pin 13, 26 V
AC
winding,
is
@ .
....Page 1-4, Table 1-2, Furnished:
Delete all references
to
Rack Mounting
Kit
.
..,..Page 2-2, Paragraph 2-22:
Change
to
read:
"A
Rack Mounting
Kit
is
available
to
install the instrument in a 19-inch rack. Rack Mounting Kits may be
obtained through
your
nearest Hewlett-Packard Office
by
ordering HP Part Number 5060-8142."
HEWLETTI PACKARD 6
~,
.~
Model8690B
CHANGE
1
Page 5-17, Table 5-4, Power Supply Adjustment:
Change the power supply adjustment sequence
.as
indicated below:
Old Adjustment Sequence New Adjustment Sequence
a,
b,
c,
d,
e, f, g,
h,
L a,
b,
c,
f,
g,
h,
i,
d,
e
Page 6-4, Table 6-1:
Add diodes A3CR56, A3CR57 and A3CR58,
HP
Part No. 1901-0033 DIODE: SILICON 100 rnA
180
WV.
Page 6-6, Table 6-1:
Add diode
A4CR11,
HP
Part No. 1902-3400 DIODE: BREAKDOWN 78.7V
2%400
mW.
Change resistors AlOR17/AlOR18
to
HP Part No. 0698-3136 R: FXD
17.8K
1%
1/8W.
Page 6-10, Table 6-1:
Change A8 Assy
to
HP
Part No. 08690-60053.
Add A8Q2 HP Part No. 1884-0073 THYRISTOR, SCR.
Add Resistor
A8Ri5
HP
Part No. 0757-1000 R: FXD MET FLM 51.1
OHM
1%
1/2W.
Add Resistor A8R16
HP
Part No. 0757-0280 R: FXD MET FLM l.OK OHM
1%
1/8W.
Change Capacitor A8C6
to
HP
Part No. 0180-0183
C:
FXD ELECT
10
UF
+75
-10%50
VDCW.
Change
A8Ql
to
HP
Part No. 1855-0010 UNIJUNCTION: SILICON.
Change Resistor A8R13 to
HP
Part No. 0698-4348 R: FXD MET FLM 4.99M
OHM
1%
1/2W.
Change Resistor A8R14
to
HP
Part No. 0698-3444 R: FXD MET FLM 316
OHM
1%
1/8W.
Page 6-11, Table 6-1:
08690-90018
·Change Transistors AlOQ3 and A10Q4
to
HP Part No. 1853-0020 TRANSISTOR: PNP SILICON (Recommended replace-
ment
for 1850-0062).
Pages 6-12, and 6-13, Table 6-1:
Add diode
AllCR19
HP
Part No. 1901-0033 DIODE: SILICON 100 rnA
180
WV.
Change Transistors A11Q2,
Al1Q3,
A11Q4,
AllQ6,
A11Q7, A11Q8 and
AllQll
to
HP Part No. 1853-0020
TRANSIS-
TOR: PNP SILICON (Recommended replacement for 1850-0062). ·
Page 6-16, Table 6-1:
Add chassis
mounted
diodes CR6 and CR7
HP
Part No. 1901-0033 DIODE: SILICON 100
MA
180
WV.
Change chassis mounted Fuse
F3
to
HP
Part No. 2110-0002 FUSE: 2A, 250V.
Change chassis mounted Fuse
F4
to
HP
Part No. 2110-0036 FUSE:
8A
125V.
Page 6-17, Table 6-1:
Add chassis mounted resistor R26 HP Part No. 0812-0019 R: FXD
WW
0.33
OHM
5%
3W.
Add chassis mounted resistor R27
HP
Part No. 0812-0020 R: FXD
WW
0.39
OHM
5%
3W.
Page 7-3/7-4, Figure 7-2:
Change A10Q3 and A10 Q4 to HP Part No. 1853-0020 (Recommenged replacement for 1850-0062).
Change value
of
resistors A
10R17/
A10R18
to
17.8K ohms.
Page 7-5, Figure 7-3:
Add diode A3CR56. (Connect anode
to
source
of
A3Q2A and cathode to emitter
of
A3Q3.)
Add diode A3CR57. (Connect anode
to
source
of
A3Q2B and cathode
to
emitter
of
A3Q4.)
Add diode A3CR58. (Connect anode
to
base
of
A3Q5 and cathode
to
emitter
of
A3Q5.)
Change
the
A3 column
of
REFERENCE DESIGNATIONS Table
to
include diodes A3CR56, A3CR57 and A3CR58.
Substitute
the
attached Component Identification Assembly A3 board
photo
(Figure 5) for the
photo
shown in
the
manuaL
HEWLETT
PACKARD
7
Model 8690B 08&90-90018
-:J,-
~
CHANGE 1 (cont'd)
Pages 7-9/7-10, Figure 7-5:
Substitute the attached A8 Assy board photo (Figure 3) for the photo shown in the manual.
Add 78.7V breakdown diode A4CR11. (Connect anode
to
ground and cathode
to
A4R34, A4C8 junction.)
Change the
A4
column
of
RE.FERENCE DESIGNATIONS Table
to
include diode A4CR11.
Pages 7-11/7-12, Figure 7-6:
Change Transistors A11Q2,
Al1Q3,
A11Q4, A11Q6, A11Q7,
Al1Q8
and
AllQll
to
HP Part Number 1853-0020. (Recom-
mended replacement for 1850-0062).
Add diode Al1CR19. (Connect anode
to
base
of
AllQll
and cathode
to
emitter
of
Al1Q11.)
Add chassis mounted diode CR6. (Connect anode
to
center conductor
of
MARKER
output
jack and cathode to ground.)
Add chassis mounted diode CR7. (Connect anode
to
center conductor
of
BLANKING
output
jack and cathode to ground.)
Change
All
column
of
REFERENCE DESIGNATIONS Table
to
include diode A11CR19.
Change chassis mounted component column (no heading)
of
REFERENCE DESIGNATIONS Table to include diodes
CRt?
and CR7.
Page 7-14:
Substitute
the
attached A8 Assy, ComponentIdentification board photo (Figure 1) for the photo shown in
the
8690B Manual.
CHANGE2
Pages 6-14 and 6-15, Table 6-1:
Change A14 Heater Supply Assy
to
HP Part Number 08690-60054 (New board).
Add
the
following A14 Assy Components (Parts list for new A14 Assy).
C1
0160-3534
C:
FXD MICA 510 PF
5%
100
VDCW.
C3
0180-0089
C4
0160-3539
C5
0180-0141
C6 0160-2205
C7
0180-0094
CR1 1902-0041
CR2 1901-0025
CR3 1901-0025
CR4 1901-0025
IC1 1820-0196
IC2 1820-0196
IC3 1820-0196
Q1
1854-0062
Rl
0757-0418
R2 0757-0440
R3 0757-0438
R4 0757-0461
R5 0757-0473
R6 0757-0401
R7 0757-0416
R8 0698-3156
R9 0757-0447
R10 2100-1759
Rll
0757-0441
R12 0757-0199
R13 0698-3154
R14 0757-0416
R15 0757-0280
R16 0757-0289
R17 0698-3152
C:
FXD ELECT 10 UF
-10%
+100% 150
VDCW.
C:
FXD MICA 820 PF
5%
100
VDCW.
C:
FXD ELECT 50 UF +75
-10%50
VDCW.
C:
FXD
MICA
120 PF
5%.
C:
FXD ELECT 100
UF
25
VDCW.
DIODE, BREAKDOWN: 5.11V
5%400
mW.
DIODE, SILICON 100 MA/1V.
DIODE, SILICON 100 MA/1V
DIODE; SILICON 100 mA/1
V.
IC: VOLTAGE REGULATOR.
IC:
VOLTAGE REGULATOR.
IC: VOLTAGE REGULATOR.
TRANSISTOR: SILICON
NPN.
R:
FXD MET FLM 619
OHM
1%
1/SW.
R: FXD
MET
FLM 7.5K
OHM
1%
1/8W.
R:
FXD
MET
FLM 5.11K
OHM
1%
1/8W.
R: FXD MET FLM 68.1K
OHM
1%
1/SW.
R: FXD MET FLM 221K
OHM
1%
1/8W.
R: FXD MET FLM 100
OHM
1%
1/8W.
R: FXD MET FLM 511
OHM
1%
1/8W.
R: FXD MET FLM 14.7K
OHM
1%
1/8W.
R:
FXD MET FLM 16.2K
OHM
1%
1/SW.
R: VAR
WW
2K
OHM
10% LIN 1/2W.
R: FXD MET FLM 8.25K
OHM
1%
1/8W.
R: FXD
MET
FLM 21.5K
OHM
1%
1/BW.
R: FXD
MET
FLM 4.22K
OHM
1%
1/8W.
R:
FXD
MET
FLM 511
OHM
1%
1/8W.
R: FXD
MET
FLM l.OK
OHM
1%
1/8W.
R: FXD
MET
FLM 13.3K
OHM
1%
1/8W.
R:
FXD MET FLM 3.48K
OHM
1%
1/8W.
HEWLETT
PACKARD
8
Model8690B 08690-90018
CHANGE 2 {cont'd)
R18 2100-1758 R: VAR
WW
1K
OHM
10% LIN 1/2W.
R19 0757-0440 R: FXD MET FLM 7.5K
OHM
1%
1/SW.
Page 7-14/7-15, Component Identification photo and Figure 7-8:
Substitute the attached A14 Assy board photo and schematic (Figures 2 and 3) for those shown in the 8690B Manual.
CHANGE3
Page 6-8, Table 6-1;
Add 9 pin tube socket for A5V1 (HP Part No. 1200-0062).
Page 6-10, Table 6-1:
Change capacitor A8C6
to
HP
Part No. 0180-2268
Change resistor A8R13
to
HP
Part No. 0757-0868
Change resistor A8R16
to
HP
Part No. 0757-0422
C:
F 140 UF 30
WVDC.
R:
F 562K
OHM
1%
1/2W.
R: F 909
OHM
1%
1/SW.
Page 6-12, Table 6-1:
Add 7 pin tube socket for AlO
Vl
(HP Part No. 1200-0053).
CHANGE4
Page 6-18, Table 6-1, under MISCELLANEOUS:
Add the following note
to
define the 8690B color scheme.
NOTE
This change implements a different color scheme for the standard instrument. Colors prior
to this change are now available as options. Refer
to
listing below.
8690B STANDARD. Indicates color scheme for the 8690B beginning with this change. (Includes MINT GRAY front
panel and OLIVE GRAY cabinet.)
8690B Option A85. Indicates combination color scheme for the 8690B. (Includes LIGHT GRAY front panel and
OLIVE GRAY cabinet.)
8690B Option X95. Indicates color scheme for the 8690B prior
to
this change. (Includes LIGHT GRAY front panel and
BLUE GRAY cabinet.)
Add the following 8690B parts
or
description changes.
08690-4105 CORNER GLIDE (LIGHT GRAY)
# 08690-40002 CORNER GLIDE (MINT GRAY) (STANDARD (COLOR)
08690-6041 ASSY: FRONTPANEL (LIGHT GRAY)
# 08690-60055 ASSY: FRONT PANEL (MINT GRAY) (STANDARD COLOR)
08690-6042 DRIVE ASSY: DIAL (LIGHT GRAY)
# 08690-60056 DRIVE ASSY: DIAL (MINT GRAY) (STANDARD COLOR)
#Denotes
standard
color
for
8690B
part
beginning
with
this
change.
Page 6-19, Table 6-1, under MISCELLANEOUS:
Add the following 8690B parts
or
description changes.
08690-0016 TOP COVER ASSY (BLUE GRAY)
#08690-00033 TOP COVER
ASSY
(OLIVE GRAY) (STANDARD COLOR)
08690-00031 REAR PANEL (LIGHT GRAY)
# 08690-00035 REAR PANEL (MINT GRAY) (STANDARD COLOR)
5000-0746
#5000-8725
SIDE COVER 8 X 16 (BLUE GRAY)
SIDE COVER 8 X 16 (OLIVE GRAY) (STANDARD COLOR)
HEWLETT
PACKARD
9
Model8690B
CHANGE 4 {cont'd)
08690-00~7
BOTTOM COVER ASSY (BLUE GRAY)
#08690-00034
BOTTOM COVER ASSY (OLIVE GRAY) (STANDARD COLOR}
5060-0777
#5060-8742
5060-0765
# 5060-8735
RACK MOUNT KlT
SH
(LIGHT GRAY)
RACK MOUNT
KIT
8H (MJNT GRAY) (STANDARD COLOR)
RETAINER HANDLE ASSY (BLUE GRAY)
RETAINER HANDLE ASSY (OLIVE GRAY) (STANDARD COLOR)
#Denotes
standard
color
for
8690:!) pllJt
l:>ej!;mnutg
witn tnis chllPJie.
CHANGES
Page
6-4, Table 6-1:
Change transistor A3Q6
to
HP Part No. 1854-0079, TRANSISTOR; SILICON NPN, 2N3439.
Page 6-6, Table 6-1:
Add diode A4CR12 1901-0033 DIODE: SILICON 100 mA 180
WV.
Page
6-9, Table 6-1:
Change trapsistors A6Q1/A6Q2
to
HP
Part No. 1854-0079, TRANSISTOR: SILICON NPN, 2N3439.
Page
6-12, Table 6-1:
08690.9001~'
Change resistors A10R17/A10R18
to
HP
Part No. 0698-3126; ,R: FXD 17,8K
OHM
1%
1/SW.
(Recommended replace-
ment
for
8690B instruments with serial
pref]J{es
11:t4A and l124A.)
Page
7-3, Figure 7-2:
Change value
of
resistors A10R17/A10R18
to
17.8Kohms.
Page 7-5, Figure 7-3:
Change transistor A3Q6
to
~HP
Part No.1854-0079.
Page 7-9, Figure 7-5:
Add diode A4CR12 in series with
zene~diode
A4CR1l. Connect
catbode
of
A4CR12
to
ground,
and
anode
to
A4CR1l.
Page
7-17, Figure 7-9:
Change transistors A6Q1/A6Q2
to
J:IP
Part No. 1854-0079.
CHANGE
6
Page
6-7, Table 6-1:
Change A5Q2
to
HP
Part No. 1854-0475.
Page
6-14, Table 6-1:
Change A12Q4 to
HP
Part No. 1854-0475.
Page
7-13, Figure 7-7:
Change A12Q4A and A12Q4B to
HP
Part No, 1854-0476,
Page
7-17, Figure 7-.9:
Change A5Q2
to
HP
Part No. 1854-0475,
CHANGE
7
Page
6-18, Table 6-1:
Add
HP
Part No. 3160-0092 GUARD: FAN BLADE.
CHANGE
8
Page
6-10, Table 6-1:
Change A8R14 to
HP
Part No. 0698-3402, R: FXD MET FLM 316
OHM
1%
1/'JW.
CHANGE
9
Page
6-10, Table 6-1:
Change A8C4 and A8C5
to
HP
Part No. 0160-4051
C:
FXD .01 UF 4 kV,
H£WLETT'
PACKARD
10
"llll'bdel 8690B
Figure
1.
Component
Identification, Assembly
AB
(Part
of
Change 1)
Figure 2. Comporient Identification,
Assembly
A14
(Part
of
Change
2)
HEWLETT~PACKARD
08690-90018
11
:X:
t"'J
~
t"'J
..,
'"-!
~
C')
~
)>.
:::0
tJ
f...'
""
'
I®
o12IT:J
0
!STANDBY
1
OCl
®
~
~
P/0
AS
HV
PWR
SUP
ASSY
lr-----~
I
Rl3*
Rl4 I
I
....
,.
@j)
@)
I
~-TURN-ON
TIME DELAY
CKT-----
~-_1
__l
®
WI
(.A§~~
~4"'"'
~h
~~-
@
~
I
I
I
I
I
'"
~
D
COPTJIISI1T
1-.a
aV
MtWLlTT~PACICARD
CO
801!00
TBTII
I>VR
~UP
8
AIIJII
C~T-n•4
@@
NOTE
I. WAVEFORM Af'IO VOLTAGE CONDITIONS:
CW
OPERATION
P'J.""
>)
~~
1
+JJcs
!---------='-----------;1
I
xA
14
~EATER
SUPPLY ASSY (08690.,...·60054)
I I
--
--
--
"'"
i
·1
~j
-r
-;
10
1 1
~
(ill®
8 ®
- ®
"
7500
)1 :
ill)
+275VDC
.:------.cl
:
1
XA1.4
' '
VOLTAG£
DIFFERENTIAL
12,6VOC
n~~i~~is~s
Jl'2
I '
-
TIO
l""v
l T
)~+65,0VDC
I
~
p·
I '
I
~I!WI
_l
1~
I
['-'--'
1 ' (
"·"
__
11
=,----<
@ro
RF
uNIT
l
-:::
~t~OVOC
PI
I
(@
GD
'!sTANDBY I
...
21.~
C5
00
----
"
'"
R8
'"
14.7K
8250
~
-~
<•
XAI4
~
'" '
,_,
I
REFERENCE_DESIGNATIONS
AS
C6
QI,Z
Rl3-16
"
Cl,2,.4,7
CRI-8,17
Rl,3,4,8,9
'"
"
A14
Cl-7
CRI-4
IC
1-3
"
Rl-19
~1-5
~~-~8,24-27
JG
SII,L4
I I
~~=
4
~\
I
l__
XAl4
L__
__
~~@
-~·JY~
'"
3480
(bl~o
OT
180
I i
Jl2
CONNEC-TED
TO
8690
GROUND JUNCTION
POINT
AT
REAR
Of
A7
I 1
~
1"'~
6
•
3
v
I:
Jl2
I~"
:
""
no~
"!
'.
,J-<@0~,~'
I -
-)~-6.3VOC
________________
_j
Jr.R=EF=ER~EN~CE~P~ES~IGN~<~TI~=s~.=~ffl~IN~P~UT~LIN=E~81~-
••
~II
A~SEMBLIES
ARE
ASBR'EVIATEO.
FULL
DESIGNATIO/</
IN
CLUDES
ASSEMBLY
NUMBER;
o.g.,
Rl
OF
ASSEMBLY
Al
15
AIRL
DESIGNATIONS
OF
OTHER
COMPOI<ENTS
ARE
COMPLETE
AS
SHOWN
Figure
3.
Power Supply Section, +20V, +
12.6V
and
-6.3V
Power Supplies
(Part
of
Change 2)
~
~
00
$
0
ct:;!:l
0
00
~
w
c;!;>
0
,..,._
!110
._
,. •
~odel
8690B
*FACTORY
SELECTED
PART,MAY
BE
OMITTED
Figure
4.
ComponentIdentification, Assembly
A4
(Part
of
Change 5)
HEWLETT'
PACKARD
08690-90018
13
Figure
5.
Component Identification,
AS~~embly
A3
(Part
of
Change
1)
HEWLETT
I
PACKARD
14
CHANGE10
Page 6-4, Table 6-1:
Change A3R34
to
HP
Part No. 0698-3431 R:FXD MET FLM 23.7
OHM
1%
1/8W.
Page
6-17, Table
6:;1:
Change IUS
toHP
Part No. 0698-3431 R:FXD MET
FLM
23.7
OHM
1%
1/8W.
Page 7-5, Figure 7-3 (Schematic Diagram):
Change A3R34
to
23.7 Ohm.
Page
7-15, Figure
7-8
(Schematic Diagram):
Change
Rl8
to
23.7 Ohm.
CHANGE11
Page
6-17, Table 6-1:
Add S15 3103-0041 SWITCH:THERMAL.
Page
7-15,
Figl.lre
7-8:
Add thermal switch S15 to schematic diagram
of
Power Supply Section
as
shown in Figure 6.
J6
Wl
[1\!:]'Q\il.[ft]
( (': (f------
1 I
I I
I I
<I
I
I
I
I
(: I
\j
<~
<
0
0
0
Figure
6.
Partial Schematic Diagram
of
the Power Supply Section Showing Thermal Switch S15
(Part
of
Change 11)
CHANGE
12
Page 6-9, Table 6-1:
08690-90018
Change A6R3, A6R9,
A6Rll
and A6R12
to
HP
Part No. 0698-3442, R:FXD MET FLM 237
OHM
1%
1/8W.
Page
7-17, Figure 7-9:
Change A6R3, A6R9,
A6Rll,
and A6R12
to
237
OHMS.
·cHANGE
13
Page
6-14, Table 6-1:
Change A12 BOARD ASSY:
ALC
AMPLIFIER to
HP
Part No. 08690-60074.
Change A12XV1 SOCKET:TUBE
to
HP Part No. 1200-0573.
HEWLETT'
PACKARD
15.
M0del '8690B
Page 6-5, Table 6-1:
Change A4 HP Part Number
to
08690-60076.
Add second A4 entry HP Part Number 08690-60077
BD
ASSY: HELIX
AMPL
(H26).
~CHANGE
15
Page 6-10, Table 6-1:
Change A8 HP Part Number
to
08690-60075.
16
HEWLETT
PACKARD
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