HP 8690B User manual

t- ''·. "
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-;--- Make Manual Changes-
1114A 1, 2
1124A
1, 3
1143A02906 thru
1143A03055
1202A03056 thru
1202A04045
.... NEW ITEM
ERRATA
Page 6-2, Table 6-1:
1, 2,4, 5
1, 3-6
r- Serial Prefix or Number-- Make Manual Changes-
1202A04046 thru
1202A04345 1,3-7
1202A04346 thru
1202A04585
1349A
1,3-8
1,3-9
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: V AR 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.
.... Page 6-3, Table 6-1:
Change A2R30
to HP Part No. 2100-0673 R: V AR COMP 5K OHM 20% LIN 1/2W
A2R31
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 6-11, Table 6-1:
Add A9MP1, MP2,
HP Part No.1205-0011 Heat Sink.
.... Page 6-13, Table 6-1:
GbaJ;tge A22R2 to HP Part No. 2100-0675 R: VAR COMP 25K OHM 20% LIN 1/2W
Change A11R8
to HP Part No. 2100-0675 R: VAR COMP 25K OHM 10% LIN 1/2W.
NOTE
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.
10 June 1974
11 Pages
Printed in U.S.A.
HEWLETT
PACKARD

Model8690B
08690-90018
ERRATA (Cont'd)
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 6-18, Table 6-1:
Add the following.
A3
HP Part No. 08690-60066 Replacement Kit Reciprocal Amplifier Board Assembly
A4
HP Part No. 08690-60063 Replacement Kit Helix Amplifier Board Assembly
A5
HP Part No. 08690-60065 Replacement Kit Low Voltage Power Supply Board Assembly
A6
HP Part No. 08690-60064 Replacement Kit Regulator Board Assembly
AS HP Part No. 08690-60071 Replacement Kit High Voltage Power Supply Board Assembly (not pretested)
A9
HP Part No. 08690-60061 Replacement Kit Rectifier Board Assembly (not pretested)
AlO HP Part No. 08690-6005~ Replacement Kit Sweep Generator Board Assembly
A12 HP Part No. 08690-60062 Replacement Kit ALC Amplifier Board Assembly
Page 7-5, Figure 7-3:
Change Fl to 0.032A
Change the A3 Assembly Resistor Reference Designations to read R30-34, 40-45, 47-80.
Change the circuitry
of A3Q1 as shown in the attached drawing:
R48
75K
R47*
1620
R79 R80
51. lK !OK
C40
0.1
G
Ql
1855-0062
P/0 Figure 7-3. Frequency Control Section Reciprocal Amplifier
HEWLETT~ PACKARD
2

Model 8690B 08690-90018
ERRATA (cont'd)
Page 7-14 and 7-16, Component Identification, Assembly A9:
Substitute the attached A9 Component Identification board for that shown
in thl' 8690B Manual.
SHIELDED
Component Identification, Assembly A9
Page 7-15, Figure 7-8:
Change the wire color code
of the wire between XA14 piri 6 and A9CR2, from @ to(D.
The wire color code of the wire at T2 pin 13, 26 V AC winding, is @ .
HEWLETT~ PACKARD
3

Model8690B
CHANGE1
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, i.
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 7S.7V 2%400 mW.
Change resistorsA10R17/A10R1S to HPPartNo. 069S-3136 R: FXD 17.8K 1% 1/SW.
Page 6-10, Table 6-1:
Change
AS Assy to HP Part No. OS690-60053.
Add A8Q2 HP Part No. 18S4-0073 THYRISTOR, SCR.
Add Resistor ASRi5 HP Part No. 0757-1000 R: FXD MET FLM 51.1 OHM 1% 1/2W.
Add Resistor ASR16
HP Part No. 0757-0280 R: FXD MET FLM 1.0K OHM 1% 1/SW.
Change Capacitor A8C6 to HP Part No. 0180-0183 C: FXD ELECT 10 UF +75 -10%50 VDCW.
Change A8Q1 to HP Part No. 1S55-0010 UNIJUNCTION: SILICON.
Change Resistor A8R13 to
HP Part No. 069S-4348 R: FXD MET FLM 4.99M OHM 1% 1/2W.
Change Resistor ASR14 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 A10Q3 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 A11CR19
HP Part No. 1901-0033 DIODE: SILICON 100 rnA 180 WV.
Change Transistors Al1Q2, A,l1Q3, A11Q4, A11Q6, A11Q7, AllQS and A11Q11 to HP Part No. 1S53-0020 TRANSIS-
TOR: PNP SILICON (Recommended replacement for 1850-0062). ·
Page 6-16, Table 6-1:
Add chassis mounted diodesCR6.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: SA 125V.
Page 6-17, Table 6-1:
Add chassis mounted resistor R26
HP Part No. OS12-0019 R: FXD WW 0.33 OHM 5% 3W.
Add chassis mounted resistor R27 HP Part No. OS12-0020 R: FXD WW 0.39 OHM 5% 3W.
Page 7-3/7-4, Figure 7-2:
Change A10Q3 and AlO
Q4 to HP Part No. 1S53-0020 (Recommended replacement for 1850-0062).
Change value
of resistors A10R17IA10R18 to 17.SK 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.
4

$ t
Model 8690B 08690-90018
CHANGE 1 (cont'd) ',
Pages 7-9/7-10, Figure 7-5:
Substitute the attached AS Assy board photo (Figure 3) for the photo shown in the manual.
Add 78.7V breakdown diode A4CR11.
(eonnect anode to ground and cathode to A4R34, A4C8 junction.)
Change the A4 column of REFERENCE DESIGNATIONS Table to include diode A4CR11.
Pages 7-11/7-12, Figure 7-6:
Change Transistors
Al1Q2, A11Q3, A11Q4, Al1Q6, A11Q7, AllQS and AllQll to HP Part Number 1S53-0020. (Recor~
mended replacement for 1850-0062).
Add diode A11CR19. (Connect anode
to base of AllQll and cathode to emitter of AllQll.)
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 CRQ
and CR7.
Page 7-14:
Substitute the attached AS Assy, ComponentIdentification board photo (Figure 1) for the photo shown in the S690B 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 01S0-0089
C: FXD ELECT 10 UF -10% +100% 150 VDCW.
C4 0160-3539
C: FXD MICA 820 PF 5% 100 VDCW.
C5
0180-0141
C: FXD ELECT 50 UF +75 -10%50 VDCW.
C6
0160-2205
C: FXD MICA 120 PF 5%.
C7
01S0-0094
C: FXD ELECT 100 UF 25 VDCW.
CR1 1902-0041 DIODE, BREAKDOWN: 5.11V
5% 400 mW.
CR2 1901-0025 DIODE, SILICON 100 MA/1V.
CR3 1901-0025 DIODE, SILICON 100 MA/1V
CR4 1901-0025 DIODE; SILICON 100 mA/1
V.
IC1 1820-0196 IC: VOLTAGE REGULATOR.
IC2 1S20-0196 IC: VOLTAGE REGULATOR.
IC3 1S20-0196 IC: VOLTAGE REGULATOR.
Q1
1854-0062 TRANSISTOR: SILICON
NPN.
R1 0757-041S R: FXD MET FLM 619
OHM 1% 1/SW.
R2 0757-0440
R: FXD MET FLM 7.5K OHM 1% 1/8W.
R3 0757-043S
R: FXD MET FLM 5.11K OHM 1% 1/SW.
R4 0757-0461 R: FXD MET FLM 68.1K
OHM 1% 1/SW.
R5 0757-0473 R: FXD MET FLM 221K
OHM 1% 1/SW.
R6 0757-0401 R: FXD MET FLM 100
OHM 1% 1/SW.
R7 0757-0416 R: FXD MET FLM 511 OHM 1% 1/SW.
RS 069S-3156
R: FXD MET FLM 14.7K OHM 1% 1/SW.
R9 0757-0447 R: FXD MET FLM 16.2K
OHM 1% 1/8W.
R10 2100-1759
R: VAR WW 2K OHM 10% LIN 1/2W.
Rll 0757-0441 R: FXD
MET FLM S.25K OHM 1% 1/8W.
R12 0757-0199 R: FXD
MET FLM 21.5K OHM 1% 1/8W.
R13 0698-3154 R: FXD MET FLM 4.22K
OHM 1% 1/8W.
R14 0757-0416 R: FXD
MET FLM 511 OHM 1% 1/8W.
R15 0757-0280 R: FXD MET FLM l.OK
OHM 1% 1/8W.
R16 0757-0289 R: FXD
MET FLM 13.3K OHM 1% 1/8W.
R17 0698-3152
R: FXD MET FLM 3.48K OHM 1% 1/SW.
HEWLETT~ PACKARD
5

~ (i} .tlt
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% 1/8W.
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.
CHANGE 3
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% 1/8W.
Page 6-12, Table 6-1:
Add 7 pin tube socket for A10
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.)
Ad<l. 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(LIGHTGRAY)
# 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
6

. •·.
Model8690B 08690-90018
CHANGE 4 (cont'd)
08690-0017 BOTTOM COVER ASSY (BLUE GRAY)
#08690-00034 BOTTOM COVER ASSY (OLIVE GRAY) (STANDARD COLOR)
RACK MOUNT KIT 8H (LIGHT GRAY)
5060-0777
' # 5060-87 42
RACK MOUNT KIT 8H (MINT GRAY) (STANDARD COLOR)
5060,0765
# 5060-8735 RETAINER HANDLE ASSY (BLUE GRAY)
RETAINER HANDLE ASSY (OLIVE GRAY) (STANDARD COLOR)
#Denotes standard color for 8690B part beginning with this change.
CHANGE5
Page 6-4, Table 6-1:
,Change transistor A3Q6 to HP Part No. 1854-0079,TRANSISTOR: SILICON NPN, 2N3439.
I
Page 6-6, Table 6-1:
Add diode A4CR12 1901-0033 DIODE: SILICON
100 mA 180 WV.
Fllg~6-9, Table 6-1:
Change transistors A6Q1/A6Q2
to HP Part No. 1854-0079, TRANSISTOR: SILICON NPN, 2N3439.
·Page 6-12, Table 6-1:
Change resistors A10R17/A10R18
to HP Part No. 0698-3126; .R: FXD 17.8K OHM 1% 1/8W. (Recommended replace-
ment for 8690B instruments with serial prefiXes 1114A and 1124A.)
Page 7-3, Figure 7-2:
Change value
of resistors A10R17/A10R18 to 17.8K ohms.
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 zener diode A4CR11. Connect cathode
of A4CR12 to ground, and anode to A4CR11.
Page 7-17, Figure 7-9:
Change transistors A6Q1/A6Q2
to HP 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. 1854-0475.
Page 7-17, Figure 7-,9:
Change A5Q2 to HP Part No. 1854-0475.
• CHANGE7
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% 1/2W.
.... CHANGE 9
Page 6-10, Table 6-1:
Change A8C4 and A8C5 to
HP Part No. 0160-4051 C: FXD .01 UF 4 kV.
-
HEWLETT II PACKARD
7

i\lodel 8690B
Figure 1. Component Identification,Assembly AB (Part ofChange 1) .
Figure 2. Component Identification, Assembly A14 (Part of Change 2)
. ·• "
08690-90018
8

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8690
CHASSIS
ATJI2
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8690
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JUNCTION POINT
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Figure
3.
Power
Supply
Section, +20V,
+12.6Vand-
6.3V
Power Supplies
(Part
of
Change
2)
•------
..
----··-
..
·-·-····-
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Model 8690B 08690-90018
*FACTORY SELECTED PART,MAY BE OMITIED
Figure 4. Component Identification,Assembly A4 (Part of Change 5)
10