Service Manuals, User Guides, Schematic Diagrams or docs for : HP Publikacje HP-Bench-Briefs-1988-01-03

<< Back | Home

Most service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.

Image preview - the first page of the document

>> Download HP-Bench-Briefs-1988-01-03 documenatation <<

Text preview - extract from the document

SERVICE INFORMATION FROM HEWLETT-PACKARD
1st Quarter 1988

Using Copper Tape to Fabricate RF
Breadboard Circuits
John Kristiansen Circuit Layout pattern; however, the preferred scale
Hewlett-Packard for paper layout is 2:l.
If it's not already done, the first
Introduction step is to mark your schematic with The 2:l scale is easy to accomplish
component reference designators, using 0.200 grid graph paper (some-
Do you use insulated wire when connector pin numbers, test point times called "engineering notebook
breadboarding your circuit boards? designations, etc., to identify all items paper), which is what I used for this
Do you also use insulated wire for and components that will appear on article. Mark your sheet of graph
high frequency circuits-for example, the layout (see Figure 1 for a simple paper with sequential numbers across
above 50 MHz? At these higher fre- schematic). You can start the initial the top and down the side. As you
quencies your wire begins to look layout by arranging a rough sketch lay your circuit out on the graph
like an inductor, and the whole circuit of the circuitry to determine the most paper, each component lead (solder
may start to oscillate at the slightest practical placement of components point) assumes a cross-reference
disturbance. and traces. The next step is to adapt number. These cross-reference num-
the sketch to a formal layout using a bers will be used for transferring the
In this article I will describe another grid and a component template that layout from the paper to the bread-
method of breadboarding RF circuits will establish very accurate conductor board so you know where to place
using adhesive-backed copper tape. paths, component body outlines, board each component and the copper tape.
Some of the advantages of using outline and all other features. The An example is shown in Figures 2
copper tape are: layout should be drawn as viewed and 3.
from the component side of the
The copper tape does not look like printed circuit board. The actual size A standard comDonent temdate is
an inductor at high frequencies board layout is based on a 0.100 grid one of the most useful pieces of
The circuit is more stable at high
frequencies-the tendency toward
oscillation is minimized.
The breadboard circuit is similar
in appearance to the final printed
circuit board
The circuit is easier to trace and
troubleshoot
It is easier to make circuit changes
on the board
Copper tape is useful in building
microwave stripline filters, bidi-
rectional couplers, etc.

Figure 1. Sample circuit of inverting gain amplifier.

Pub. No. 5952-0131 @ Hewlett-Packard 1988
WWW.HPARCHIVE.COM
equipment you will use in designing
breadboards. It not only saves valu-
able time but also assures that stand-
ard component lead spacing and body
sizes are used. There are several
models and styles available, one of
which is shown in Figure 4.

If you don't use the template, the
amount of space the component takes
up is a matter of educated guesswork.
For example, if you are using a
predrilled breadboard (with the
standard 0.100 inch spacing), you can
lay a selection of components (with
the leads already bent) on the bread-
board and note how many holes are
spanned. For example, a small preci-
sion resistor will span four or five
holes. Larger components naturally
span more holes. If you are using a
solid breadboard without predrilled
holes, you are almost forced into
using the template or using the graph
paper to determine the size of your --1---
components. __ - - _ _ A d _

Figure 2. Initial graph paper layout of the PC board-component side
The next step is to take all the
component designators you have
noted on the circuit and record them '"7
on a plain sheet of paper. Place I
double-sided adhesive tape on the &
back side of the paper under the 3
V
numbers and set the sheet aside. It S
will be used later as the components b
are placed on the breadboard. 7
6
?
In the next steps, you need a way to 10
transfer the cross-reference points I
from the paper to the breadboard you la
are using. The boards we use a t fJ
IC
Hewlett-Packard are predrilled in a
/t
grid pattern on 0.100 inch centers /b
(see Figure 5). You can also buy this It
type of breadboard at any good elec- Ir
tronics store. Other common types of It
LO
breadboard available are solid epoxy- d1
fiberglass or phenolic material with 22
a sheet of copper ground plane bonded aa
to one side. The following procedure 29
will work equally well on both types or
a&
of board. The only difference is that 27
the solid board requires more work 2I
in matching the reference points from -r-- - - --__- ST

the graph paper layout to the board,
and in drilling the holes and under-
- _,.- lp- I

- --
3s
1
cutting the copper ground plane away Figure 3. Initial graph paper layout of the PC board-copper tape side. The 45" guide line
from the holes. aids in finding cross reference numbers

2 BENCH BRIEFS 1ST QUARTER
WWW.HPARCHIVE.COM
have access to smaller drills, I find
that #67 bits are the right size for
IC sockets, #65 for %-?4watt resistors
and diodes, and #60 to #55 for larger
leads. If possible, use a Dremel drill
press to be sure the holes are verti-
cally aligned. This method is also
less likely t o break the brittle carbide
bits. The #60 drill will be a little big,
but it will do for most of the compo-
nents, including the printed circuit
board sockets. Drill the holes with
the drill and then ream each hole
with an U8-inch drill to undercut the
copper away from the edge of the
hole t o keep the component lead from
shorting to the ground plane (see
Figure 7). Any holes that are meant
to be grounded can be left as is. You
can solder the lead directly to the
ground plane.

Marking Predrilled bits very quickly, so carbide bits are Circuit Board Layout
Breadboards usually used for production work.
Phenolic boards are much easier to At this point, if you were using the
drill. If you are limited to a standard wire method, you would begin loading
Put a strip of tape across the top and
drill bit index, with the smallest drill the components on the board and
down the side of the board. Use any
being a #60 (0.040 inch), you want wiring the connections. However,
type of tape that is easy to write on.
I use self-sticking typewriter correc- to choose a size that will fit most of with copper tape, you lay the tape
tion tape that is commonly found in the components you are using. If you first then place the components.
the office supplies cabinet. Mark the
same sequential numbers on the
breadboard so it matches the graph
paper. See the example in Figure 6.

Marking Undrilled
Breadboards

Use the 0.100 or 0.200 inch graph
paper and cut off small strips wide
enough on which to write your num-
bers and as long as each edge of the
board. Tape them to all four edges of
the board. If you are using 0.200 inch
paper, divide each square in half.
The graph paper will provide you
references in which to draw lines
across the board, allowing you to
transfer your graph paper layout to
the board.

When drilling the holes to mount the
components, you will find that the
Figure 5. Typical PC board with holes Figure 6. Board layout showing
epoxy-fiberglass board (commonly predrilled on 0.100 grid copper tape in place. Note mylar
called G-10) will dull ordinary drill insulator where copper tape crosses

1ST QUARTER BENCH BRIEFS 3
WWW.HPARCHIVE.COM
Cut off a piece of copper tape the socket if you use a small pair of
same length as the board with a pair needle nose tweezers), and press it
of scissors or X-ACTO knife. Next,
use the X-ACTO knife and a good
home with the pin. The socket has a
closed end so it will not fill with "1
straight edge (I use a small metal solder or flux when you solder it in
ruler) and score the tape lengthwise place. Components that require fre-
in approximately 0.800 inch strips quent replacing can now be easily
(slightly smaller than the 0.100 grid inserted and removed without solder-
pattern), being careful not to cut ing. As you are inserting the compo-
through the adhesive backing tape. Figure 7. Undercutting copper away nents, cut the matching component
The narrow copper strips will easily from hole designators from the recorded sheet
lift off the backing tape and lie and paste them on the breadboard
perfectly across the holes in the next to the component. When you are
breadboard. At each spot on the board where a done, your breadboard looks very
component lead is to be soldered, similar to a printed circuit board
Start at a convenient location on poke a hole through the tape from instead of the usual "rats nest" of
your circuit and lay one end of the the tape side of the board using a wires. The next issue of Bench Briefs
tape over the cross-reference number plastic-capped bulletin board pin. In- will contain detailed calculations and
that matches your graph paper lay- sert the permanent components (such instructions on how to use the copper
out. Align the tape over the holes as IC and transistor sockets) and tape t o build a common stripline
following the same path as the signal solder them in place where they poke filter. 0
or Vcc line on the graph paper and through the tape. For those compo-
press into place on the circuit board. nents that you are going to hand-
Where one piece of copper tape crosses select to fine-tune the circuit, use the
another, use a small piece of mylar printed circuit board sockets listed in
tape as an insulator. See Figure 6. Table 1.Enlarge the breadboard holes
Where the junction of two pieces of slightly from both sides of the board
copper tape (corners, power taps, con- with the plastic-capped pin. If you
tinuations) need to make good elec- drilled the holes with a #60 drill, the
trical contact, always solder the socket will probably fit without en-
connection. Do not rely on t h e larging the hole. Insert a socket in
adhesive. the hole (it is easier to insert the

Table 1. List of References

Description HP P/N
Roll of Adhesive-Backed 3M Scotch
Copperfoil Tape 1" Wide #1181 0460-0762
Roll of Adhesive-Backed Permacel -
Copperfoil Tape 314" Wide # P-391
Roll of Clear Mylar Tape 3M Scotch - John Kristiansen
With Yellow Adhesive #8428
John Kristiansen, a native of Den-
Roll of Clear Mylar Tape 3M Scotch - mark, joined Hewlett-Packard in 1984
With Clear Adhesive #850
and is working as a bench technician
Terminal Test Point 0.038 Square 0360-0535
at HP Labs in the thin film depart-
Printed Circuit 0.038" OD 1251-1556 ment for disc storage technology. John
Board Socket Socket Size
0.03 enjoys 8mm sound film as a hobby, is I
P.C Design Template I Bishop - married, has two boys and lives in
Graphics Sunnyvale, California.
2X (2:l) Scale #3367
The Design & Drafting by Darryl
of Printed Circuits Lindsey
Pub. by
Bishop
Graphics
3

4 BENCH BRIEFS 1ST QUARTER
WWW.HPARCHIVE.COM
For example, the rectifier assembly the HP 8673B/C/D/E series of gener-
Attention is a common unit in the HP 867U72 ators that help determine whether a
q HP 8671/72 and and 8673 series of generators. Several
service notes in this issue describe
fault is in the ALC circuitry or in the
microwave signal path. To aid in MW
8673 Synthesized troubleshooting procedures to test if path troubleshooting, the service note
the diodes are shorted to the heat provides signal levels at various test
Signal Generator sink through a damaged anodized points that reference back to the
Owners surface. If the surface is damaged,
instructions are provided for placing
main troubleshooting section in the
operating and service manual.
This issue of Bench Briefs contains a mica insulating washer between
new service notes that describe pro- t h e h e a t sink and each of t h e These service notes are free, just use
cedures for improving performance rectifiers. the order form at the rear of Bench
and protection, and tips on trouble- Briefs . 0
shooting the microwave signal path Detailed microwave signal path
of your generators. troubleshooting tips are provided for

Safety-Related The HP 3562A operates within the H P 9571A Digital Test
safety standard for leakage current Station
Service Notes when operated within the stated line
frequencies of 48 to 66 Hz. Therefore,
Service notes from HP relating to make certain the instrument is op- A potential shock hazard may exist
personal safety and possible equip- erated only within these specified ac if the power line ground connection
ment damage are of vital impor- line frequencies of 48 to 66 Hertz. to a protective earth terminal is
tance to our customers. To make you defeated. Product Safety Service Note
more aware of these important For more information, order safety 9571A-25A-S reemphasizes t h i s
notes, they are printed on paper service note 3562A-09-S using the warning and describes a label (HP
with a red border, and the service Bench Briefs' order form. The note P/N 7121-4972) to be attached to the
/1 note number has a "-S' suffix. In describes a kit (HP P/N 0356244405)
containing a label to attach to the
input power module near the access
plate. Order this safety service note
order to make you immediately
aware of any potential safety prob- rear panel of the instrument. from this issue of Bench Briefs.
lems, we are highlighting safety-
related service notes here with a
brief description of each problem.
Also, in order to draw your atten-
tion to safety-related service notes /
/
on the service note order form at the
back of Bench Briefiq, each appropri-
ate number is highlighted by being
printed in color.

H P 3562A Dynamic
Signal Analyzer
Product Safety Service Note
3562A-09-S describes a possible safety
r
hazard that may exist if the instru-
ment is operated at a nominal line

`3
frequency of 400 Hz and the protective
earth ground is defeated. In these
instances, the HP 3562A exceeds the
3.5 mA leakage current limit (by .7
mA) safety standard.
-
Model 3562A

IST QUARTER BENCH BRIEFS 5
WWW.HPARCHIVE.COM
HP 85043A/B System terminal block. In these cases, the breakers and wire insulation to fail
Cabinets fastening screw pushes through the due to overheating.
insulation making a poor contact
Some of the cabinets may have with the wire. There have been two For more information, please order
improperly stripped wires that are instances where these improperly safety service note 85043B-01-Sfrom
connected to the circuit breakers and stripped wires have caused the circuit this issue ofBench Briefs. 0

o
upplement t HP 435B POWER METER
435E-3. All serials. Preferred replacement for capacitors
A4C6 and A4C30.
HP 3779C/D PRIMARY MULTIPLEX
ANALYZERS
37790-36. All serials. Recommended power transistor
replacement on A29 power supply assembly.
HP 436A POWER METER 3779D-41. All serials. Conversion of HP 3779D option
436A-12. All serials. Preferred replacement for capac- 002 to HP 3779D option 001.
itors A2C4 and A2C6. 3779D-42. All serials. Recommended power transistor
replacement on A29 power supply assembly.
HP 438A POWER METER
438A-6. All serials. Preferred replacement for capacitors HP 3780A PATTERN GENERATOWERROR
A4C13 and A4C15. DETECTOR
3780A-33. Serials 2524UO3804-2524UO3933 inclusive.
HP 1340A DISPLAY Possible faulty capacitors A30C1 and A30C2 with
Need Any Service 1340A-8. All serials. Modification to prevent high voltage
oscillator malfunction.
date code 8643L on A30 power supply assembly.

HP 3781A/B PATTERN GENERATOR
Notes? HP 1345A DIGITAL DISPLAY 3781A-5. Serials 2524UOO837-2704UOO886 inclusive.
Possible faulty capacitors A30C1 and A30C2 with
1345A-8. All serials. Modification to prevent high voltage
oscillator malfunction. date code 8643L on A30 power supply assembly.
They're free! 3781 6-1 1. Serials 2523U01091-2703U01170 inclusive.
HP 1349A/D DIGITAL DISPLAY Possible faulty capacitors A30C1 and A30C2 with
1349AfD-5. All serials. Modification to prevent high date code 8643L on A30 power supply assembly.
Here's the latest listing of service voltage oscillator malfunction.
:s. They recommend modifications HP 3782A/B ERROR DETECTOR
HP 1650A/1651A LOGIC ANALYZER 3782A-7. Serials 2524UOO832-2524UOO876 inclusive.
3ewlett-Packard instruments to
'ease reliability, improve perform-
e, or extend their usefulness.
1650Af1651A-1.1650A serials: 2722A00535 and below;
1651A serials: 2723A00180 and below. 22OV fuse
change to Slo-610 type.
1650N1651A-3. 1650A serials 2722A00833 and below:
Possible faulty capacitors A30C1 and A30C2 with
date code 8643L on A30 power supply assembly.
37828-12. Serials 26361101126-2703U121 inclusive.
5
Possible faulty capacitors A30C1 and A30C2 with
date code 8643L on A30 power supply assembly.
c
1651A serials 2723A00313 and below. Intensity
the form at the rear of Bench adjustment cable modification.
HP 3785A/B JITTER GENERATOR
?fs to order, free of
charge, service HP 3 2 3 W E SWITCHREST UNIT AND RECEIVER
3235NE-5. All serials. HP 3235A Firmware Revisions. 3785A-21. Serials 2519UOO646-251 9U00718 inclusive.
:s for several instruments. Possible faulty capacitors A30C1 and A30C2 with
3235NE-6. 3235A serials 2725A00626 and below;
3235x serials 2725A00562 and below. Additional date code 8643L on A30 power supply assembly.
RAM for HP 3235A processor. 37856-19. Serials 2518U00651-2518U00710 inclusive.
ou would like to purchase large Possible faulty capacitors A30C1 and A30C2 with
ntities of service notes covering HP 3488A SWITCH/CONTROL UNIT
date code 8643L on A30 power supply assembly.
ride range of instruments, or if 3488A-11B. All serials. Clarification on correct line HP 37878 DIGITAL DATA TEST SET
desire a complete history of all fuses. 37876-2. Serials 2703U00206 and below. Elimination
of spurious pulses from D S I / l C Rx input (A5;
rice notes documenting all changes HP 3552A TRANSMISSION TEST SET U520).
our instruments, Hewlett-Packard 3552A-17. Serials 26151106653 and below. Preferred 37876-3. All serials. Conversion of HP 37876 standard
replacement for 12V battery packs. to option 001 jitter measurement capability.
rs a microfiche library for a one
e charge. There is also a microfiche HP 3562A DYNAMIC SIGNAL ANALYZER
HP 4938A NETWORK CIRCUIT ACCESS
scription service available that TEST SET
HP3562A49-S. Serial prefix 2738A and below. Leakage
4938A-2A. Serials 2450A00702 and below. Modification
omatically updates the library on current exceeds safety standard at line frequency
to correct a potential failure.
of 400 Hz.
iarterly schedule.
HP 4948A IN-SERVICE TRANSMISSION
HP 3746A SELECTIVE LEVEL MEASURING SET
: part numbers for the service MEASURING SET 4948A-2. A8/A11 schematic diagram correction.
3746A-4A. All serials. Retrofit procedure for adding 4948A-3. All serials. Preferred replacement part number
B microfiche library and subscrip- option 012 tracking generator. for A7 tray retaining screw MP61.
I service are: 3746A-26. All serials. Preferred replacement for A32Q22 4948A-5. All serials. Preferred replacement for display
dual FET. module MP7.
3746A-27. All serials. Preferred replacement for diodes
rary- 5951-6511 A5CR1-4, AlOCRI-4 and special option H40 HP 4952A PROTOCOL ANALYZER
A410CR1-4. 4952A-2A. Serials 2725A and below, and 2739F and
scription service- 5951-6517 below. Improved yoke assembly.
HP 3764A DIGITAL TRANSMISSION 4952A-3A. Serials 2726A01194 and below, and serials
ANALYZER 2635F20001 thru 2635F20454. Modification to fix
itact your local HP Sales Office 3764A-22A. Serials 2712U01594 and below. Preferred potential disc access problem (non LIF format. disc
ordering information. 0 replacement of A3 or A3 (option 001/005)
assembly. out, disc error).

ENCH BRIEFS 1ST QUARTER
WWW.HPARCHIVE.COM
HP 4954A PROTOCOL ANALYZER HP 8672A SYNTHESIZED HP MODEL 9571A
4954A-1. Serial number range listed in text of note. SIGNAL GENERATOR DIGITAL TEST STATION
Firmware revision 1.1 upgrade to correct critical 8672A-19. Serial prefix 2703A and below. Add mica 9571A-25A-S. All senals. Potential shock hazard if the
power line ground connection to a protective earth
fl bugs and intermittent failures.
4954A-2. Serial number range listed in text of note.
Replacement of A5 U701 board enable driver.
insulators under diodes A3A12CR13 and
A3A12CR14.
8672A-20. All serials. Preferred replacement for pre-
terminal is defeated.

cision resistors. HP 37204N8 HP-I8 EXTENDER
HP 8160A PROGRAMMABLE 37204A-02. Serials 25471103590 and below. Modifi-
PULSE GENERATOR cation to correct power supply failure when both
HP 86738 SYNTHESIZED
8160A-14. Serials 2650G00746 to 2650600785 inclu- port fault lamps stay on.
SIGNAL GENERATOR
sive. Possible short of HP-IB REN line to ground 37204641, Serials 26261100450 and below. Modifi-
causes unit to stay remote operation when addressed 86736-11. Serial prefix 2704A and below. Add mica
cation to correct power supply failure when both
insulators under diodes A3A12CR13 and
to listen. port fault lamps stay on.
A3A12CR14.
86738-12. All serials. Instructionsfor microwave signal
HP 81808 DATA GENERATOR HP 54110D DIGITIZING OSCILLOSCOPES
path troubleshooting.
81806-1A. Serials 2640G00100 to 2640G00148. Im- 86738-13. Serial prefix 2640A through 2735A inclusive. 54110D-9. Serial prefixes 2710A and below. New
proved firmware revision. analog power supply offers family compatability.
Modifications to improve power supply reliability.
86738-14. All serials. Preferred replacement for pre- 54110D-10. Serial prefixes 2710A and below. New
HP 8481A POWER SENSOR cision resistors. primary power supply offers family compatability
8481A-5. All serials. Curing intermittent operation. and improves reliability.

HP 8559A SPECTRUM ANALYZER HP 8673C SYNTHESIZED HP 54111D DIGITIZING OSCILLOSCOPES
8559A-31. Serial prefix 2819A and below. Redesigned SIGNAL GENERATOR 541 11D-3. Serial prefixes 2719A and below. New
sweep generator board with improved +10 volt 8673C-12. Serial prefix 2703A and below. Add mica primary power supply offers family compatability
reference power supply to provide improved insulators under diodes A3A12CR13 and and improves reliability.
performance. A3A12CR14.
86730-13. All serials. Instructionsfor microwave signal HP 54112D DIGITIZING OSCILLOSCOPE
HP 8566A SPECTRUM ANALYZER path troubleshooting. 541 12D-1A. Serials 2735A00173 and below. Modifi-
8566A-206. All serials. HP 8566AB retrofit kit instruc- 86730-14. Serial prefix 2640A through 2735A inclusive. cation to prevent loss of resolution or excessive
tions (formerly 8566A+01 K). Modifications to improve power supply reliability. noise on trace.
8673C-15. All serials. Preferred replacement for pre-
HP 85668 SPECTRUM ANALYZER cision resistors. HP 54120T DIGITIZING OSCILLOSCOPES
85666-11A. All serials. HP 8566AB retrofit kit (formerly 54120T-6. All serials. How to obtain semi rigid "S'
and
8566A+01K). HP 867313 SYNTHESIZED semi rigid "U" cables used for test and adjustment.
SIGNAL GENERATOR
HP 8568A SPECTRUM ANALYZER 8673D-13. Serial prefix 2703A and below. Add mica
8568A-448. All serials. HP 8568AB retrofit kit instruc- HP 54201ND DIGITIZING OSCILLOSCOPES
insulators under diodes A3A12CR13 and
tions (formerly 8568A+01 K). 54201ND-10. All serials. Locked high trace or rx) trace
A3A12CR14.
may be result of input FET failure.
HP 85688 SPECTRUM ANALYZER 8673D-14. All serials. Instructionsfor microwave signal
54201ND-11. Serial prefixes 2716A and below. Im-
path troubleshooting.
85686-12A. All serials. HP 8568AB retrofit kit (formerly proved input FET protection available.
8673D-15. Serial prefix 2640A through 2735 inclusive.
8568A+01K). 54201ND-12. All serials. Software calibration procedure
Modifications to improve power supply reliability.
."7 HP 8590A SPECTRUM ANALYZER
8590A-2A. All serials. Option H50 CATV retrofit instal-
8673D-16. All serials. Preferred replacement for pre-
cision resistors.
summary.

HP 70900A LOCAL OSCILLATOR
lation instructions.
70900A-146. All serials. H a r d w a d f i r m w a r e
8590A-5. All 75 Ohm input options (001). Instructions HP 8673E SYNTHESIZED compatibility.
to correct the HP 8590A 75 Ohm option 001 readout SIGNAL GENERATOR
from d6m to d6mV after replacing firmware ROMs. 8673E-5. Serial prefix 2704A and below. Add mica
859OA-6. All 75 Ohm input options (001). 50 Ohm HP 85029A VERIFICATION KIT
insulators under diodes A3A12CR13 and 85029A-1. All serials. Transferring data files from
input. List of programs to correct or change the A3A12CR14.
CRT readout from dBm to dBmV or from dBmV to replacement disc to the master disc.
8673E-6. All serials. Instructions for microwave signal
dBm. path troubleshooting.
8590A-7. All serials. Display modifications to improve HP 85043AIB SYSTEM CABINETS
8673E-07. Serial prefix 2640A through 2738A inclusive.
performance. 850436-1-S. 85043A serials 2622A01352 and below,
Modifications to improve power supply reliability.
and 850436 serials 2623A00172 and below. Elimi-
HP 8642AIB SYNTHESIZED 8673E-08. All serials. Preferred replacement for pre-
cision resistors. nation of a potential safety hazard in the circuit
SIGNAL GENERATOR breakers.
8642A-6/8642B-6. A14 module serial prefixes 2531A
and below. Modification to resolve low output power HP 8753A NETWORK ANALYZER HP 85046AIB SPARAMETER TEST SET
in the Heterodyne band. 8753A-1. All serials. Instructions for creating A9 EE- 85046NB-1. 85046 serials 2542A01553 and below,
HP8642B-7. A19 module serial prefixes 2517A to PROM backup data. and 850466 serials 2542A00220 and below. Modi-
2640A inclusive. A1 9 doublerlattenuator module 8753A-618757A-5. 8753A serials 2625A and below, fication to make sure attentuator andlor RF switch
replacement for maximum output level degradation. 2625J and below, 2713U and below, and 8757A actuates.
serials 2646A and below. Modification to prevent
HP 8662A SYNTHESIZED
SIGNAL GENERATOR
dust accumulation on the CRT and glass filter. HP 850518 7 MM VERIFICATION KIT
8753A-7A. All serials. A3 source/A9 CPUiAl 1 phaselock 850516-1. Serials 2705A00001 through 2705A00162
8662A-12C. Serial prefix 2429A and below. Modification assembly compatibility matrix.
to improve low frequency loop performance and certifiedlrecertified before Oct. 1987. Exceptions:
8753A-8. All serials. Firmware update/replacement kit 2705A00137, 2705A00139, 2705A00146,
eliminate intermittent status errors 03/04. (HP P/N 08753-6OXXX).
8662A-15. All serials. Instructions for replacing the 2705A00147, 2705A00150, 2705A00152,
8753A-9. All serials. Revision A.O1 performance test 12705A00154, 2705A00159, 2705A00160,
cooling fan. software. 2705A00161. Modification to prevent possible
HP 8663A SYNTHESIZED damage to the 50 Ohm airline (pari number
SIGNAL GENERATOR HP 8757A SCALAR NETWORK ANALYZER 85051-60007) and 25 Ohm mismatch airline (part
8663A-6C. Serial prefix 2424A and below. Modification 8757A-6. All serials. Modification to prevent intermittent number 85051-60008) when used with the HP
to improve low frequency loop performance and memory loss. 85050C 7 MM precision calibration kit).
eliminate intermittent status errors 03/04.
8663A-9. All serials. Instructions for replacing the HP 85629A TEST AND
HP 8902A MEASURING RECEIVER ADJUSTMENT MODULE
cooling fan.
8902A-5.Serial prefixes 2741A and below. Modification 85629A-1A. All serials. New ROM upgrade kit (HP
HP 86718 SYNTHESIZED to resolve set reference error. P/N 85629-60002)
SIGNAL GENERATOR
86716-2. Serial prefix 2703A and below. Add mica HP 8970AIB NOISE FIGURE METER HP 85685A RF PRESELECTOR
insulators under diodes A3A12CR13 and 8970A-12. All serials. Preferred replacement for oscil- 85685A-13. Serial prefixes 2620A and below. Instruc-
A3A12CR14. lator transistor A1 1Al Q1. tions for installing susceptibility improvement kit.
86718-03, All serials. Preferred replacement for pre- 89706-2. All serials. Preferred replacement for oscillator 85685A-15. Serial prefixes 2620A and below. Instruc-
cision resistors. transistor A1 1A1 Q1. tions for installing residual improvement kit.

1ST QUARTER BENCH BRIEFS 7
WWW.HPARCHIVE.COM
rice Note Order Form
: For European customers (ONLY) Name
r
) Hewlett-Packard Firm
Nederland BV Address
Central Mailing Dept.
P.O.Box 529 City
1180 AM Amstelveen
The Netherlands State Zip

0 4954A-1 0 864257 0 8673C-14 0 8757A-6
0 4954A-2 0 8662A-12C 0 8673015 0 8902A-5
0 8160A-14 0 8662A-15 0 8673D-13 0 8970A-12
0 8180B-1A 0 8663A-6C 0 8673D-14 0 89708-2
0 8481A-5 0 8663A-9 0 8673D-15 0 9571A-25A-S

0 8559A-31 0 86718-2 0 8673D-16 0 37204A-02
0 8566A-208 0 86718-03 0 8673E-5 0 37204501
0 85668-11A 0 8672A-19 0 8673E-6 0 5411oD-9
0 8568A-448 0 8672A-20 0 8673E-07 0 54110D-10
0 85688-12A 0 8673511 0 8673E-08 0 54111D-3

0 8590A-2A 0 86738-12 + - 5 +
3w M 0 54112DlA
0 8590A-5 86738-13 0 8753A-618757A-5 5412OT-6
0 8590A-6 0 8673514 0 8753A-7A 0 54201ND-10
0 8590A-7 0 8673012 0 8753A-8 0 54201ND-11
0 8642A-6186428-6 0 8673013 0 8753A-9 0 54201ND-12

0 70900A-148
0 85029A-1
0 85043514
0 85046NB-1
0 850518-1

Please photocopy this order form if you do not 0 85629A-1A.
want to cut off the page 0 85685A-13
0 85685A-15

Bulk Rate
U S Postage

Sunnyvale, CA
Permit No

1ST QUARTER
WWW.HPARCHIVE.COM

◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo