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HEWLETT
PACKARD
c
SERVICE INFORMATION FROM HEWLETT-PACKARD
2nd, 3rd & 4th Quarters 1993
I
R
Richard OggIHmlett-Packard the noise floor: what causes it and the name comes from.) The signal is
how OSA noise is different from con- then digitized and processed using
- ventional microwave spectrum DSP techniques.
analyzers.
Now, on to the operating modes.
Signal Processing These are provided by the transfer
switch and the transimpedance
I switch. There are a total of five modes
First it is necessary to understand the
with the first being an OSA. Each of
basic block diagram shown in Figure 1.
the other four descriptions follow.
Optical tuning and resolution is ac-
complished in the monochromator.
fl Introduction The selected optical signal is coupled Preselector Mode
back onto fiber and normally passes
In the previous issue of Bench Briefs I through the transfer switch to the The preselector mode uses the mono-
explained the difference between the photodetector diode. Here the optical chromator input and the monochro-
optical spectrum analyzer and the power is converted to an electrical mator output. The monochromator is
lightwave signal analyzer. I covered current. The transimpedance ampli- used as a tunable bandpass filter with
modulation and some basic operation fier not only amplifies the signal ac- variable bandwidth. This allows
of the OSA. In this issue I will describe cording to variable gain, but changes selection of a single mode from a
several different types of measure- the signal from a current to a voltage. Fabry-Perot (FP) laser, or an indi-
ment or operatingmodes, and describe (This is where the "trans-" portion of vidual signal from a wavelength-divi-
Display
t
! Light Monochromator
J
Input /Double Pass I Transfer Switch
Transimpedance
1320rm
'3 Amplifier
I Control
I
c
Photodetector Monochromator Trans impedance
Input (Rear Panel)
1 MSlB
HP-IB
Figure 1. Basic OSA Block Diagram
Pub. NO.5952-3464 0 Hewlett-Packard 1993
WWW.HPARCHIVE.COM
sion multiplexed system. The output adjustments are made by the user. OSA. This is the primary resolution
is on 62 km fiber and would be (Accuracy is not as good as a regular bandwidth filter, providing the only
analyzed further by other equipment. optical power meter, but the wave- resolution adjustment control. The
This mode can be used as a "light- length range is wider.) light is returned to the grating and is f7
wave sweeper" if a broadband signal, eventually focused onto the fiber,
such as a white-light source, is Photodetector Mode providing additional resolution
applied to the input. In this case the bandwidth filtering. The photodetec-
output is light at the monochromator- The photodetector mode allows test- tor converts the light into a current
tuned wavelength, with a width equal ing an external photodetector. Again, and acts as the envelope detector. The
to the resolution. a white light source is connected to signal is converted from current to
the monochromator input. The voltage and amplified by the trans-
Stimulus-Response Mode monochromator output is connected impedance amplifier. The signal is
to the photodetector under test. The then digitized and further processed
The stimulus-response mode uses all electrical output of the photodetector as shown.
three ports on the front panel. Gener- being tested is connected to the trans-
ally a white-light source is connected impedance input on the rear panel.
to the monochromator input to form Microwave vs. OSA *
Calibration is provided by the photo-
a "sweeper" as described above. The detector internal to the OSA. The re- Now look at Figure 3, which shows
monochromator output is connected sulting measurement is responsitivity the key block diagram differences.
to the two-port device under test versus wavelength. Again the block diagram is extremely
(DUT), with its output connected to simplified, but the purpose is to
the photodetector input. As the OSA The OSA Noise Floor examine noise generation and proces-
sweeps it stimulates the DUT at differ- sing in the instrument.
ent wavelengths, then detects the We begin by looking at the simplified
output and shows the power level on diagram in Figure 2 that shows the MicrowaveAnalyzer Noise Generation
screen. The result is a plot of the inser- basic operation of the OSA and the In the microwave analyzer, the most
tion loss, or gain of the DUT, versus contribution of the components that noise is generated in the RF section,
wavelength. Normalization arithme- relate to noise. As you follow the or down conversion portion of the in-
tic is provided. light, the first significant item is the strument. Because the signal next
rotating grating. This provides the passes through the resolution band-
Power-Meter Mode wavelength spread that allows selec- width filters, these have the most sig-
tion of a limited wavelength range. nificant affect on the amount of noise
The power-meter mode uses only the Its rotation provides the sweeping in the system. Reducing this filter -l
photodetector input. In this mode the function of the analyzer. The next width reduces the noise seen on the
OSA measures total optical power item is the aperture, which allows display. The electrical signal then
over a very wide range of wave- only the desired range of wavelengths passes through log amplifiers, which
lengths. The trace is displayed in a 10 to pass. It is literally a wheel with mul- produce a signal whose amplitude is
second sweep so changes in the tiple slits of varying width and pro- proportional to the log of the input.
power level can easily be seen while vides the resolution function for the Envelope detection and video filter-
\
`3
L
Figure 2. HP OSA Operation - Key Fundamental Blocks
2 BENCH BRIEFS 2ND, 3RD 814TH QUARTERS 1993
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Microwave:
Determines Noise Level Determines Noise Width I
1 1
c INPUT Down Conv Res BW Log Amp Env Det Video BW ADC
(No Signal Applied1 V V V V I
INPUT ---Eli Res BW Env Det Trans-2 Amp
V
ADC Video BW Log Conv
r (No Signal Applied)
t V V
Figure 3. Noise Comparisons of Microwave and Optical Spectrum Analyzers
ing will produce a signal representa- tion block for controllina the noise in Sensitivitv J
tive of the peaks of the noise. the measurement is the%rst filter fol- At this point the HP OSA has an HP-
lowing the element that generates the patented feature called a "sensitivity
OSA Noise Generation most noise. In the microwave function" that allows the user to di-
In the optical analyzer, the process is analyzer, this was the resolution
quite different. Note that the most rectly enter the required sensitivity
bandwidth filters, and these are nor-
r noise is generated in the transimpe-
dance amplifier. This is well past the
mally changed to reduce the noise. If
the same tactic is tried on the optical
level. Internal algorithms determine
proper settings of gain in the trans-
impedance amplifier and filtering in
resolution bandwidth functions. Be- analyzer, there will be no change in
cause all parts of the instrument are the video bandwidth filter to achieve
the noise level. For the optical the desired sensitivity.
passive up to the photodiode, no analyzer, the first filter following the
noise is generated until there. Al- noise generation is the video band-
though the photodiode, working as width filter, and this is where the In a future issue we will look more at
the envelope detector, does generate noise is primarily controlled. sensitivity. 0
some noise, the levels are insignifi-
cant compared to the amplifier.
Therefore, the noise is shown as first
appearing after the transimpedance Low-Frequency Antenna Measurements
amplifier. The signal is next digitized,
then passes through video bandwidth Using the HP 8753C Network Analyzer
filtering (in the digital signal proces-
sing circuits, or DSP). The final step, John SwanstromlHewIett-Packard Analyzer (5952-2776), available from
before being displayed, is the log vour local HP saleslservice offices,
conversion. describes how to configure an HP
8753C into an antenna measurement
For clarification, the waveform shown system. The note describes the sys-
at the end of the optical analyzer will tem block diagram, provides assist-
not match that seen on the actual in- ance for determining the range power
strument. When the noise is negative, budget, and contains information on
the log function makes no sense. microwave performance. The product
When the noise value is close to zero, . .- ..- .. ...x.__. . . - .
.... ...~,
_.. ,
__.x_
. . note covers everything you need to
the log value is very negative. The log know about HP's measurement
values actually vary between the peak Did you know that you can use the solution.
value and negative infinity. For aes- Hewlett-Packard 8753C Network
thetics, the trace is clipped a few dB Analyzer for antenna pattern mea- If you want to automate the HP 8753C
below the sensitivity level. surements. The HP 8753C provides a through a personal computer, Flam &
low-cost low-frequency measurement Russel's 959 software is available. Call
Filter Control of Noise system for RF antennas. Antenna Meu- Flam & Russel at (215) 674-5100 for
For either instrument, the key func- surements using the HP 8753C Network information. 0
2ND, 3RD & 4TH QUARTERS 1993 BENCH BRIEFS 3
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Customer Survey WesuAts
Jim BechtoldlEditor 4. Do you LIKE/DISLIKE (please HP Service parts BBS?" asked a
circle) ordering Service Notes reader from the Marine Corps
Thank you for taking the time to re- through your FAX machine, and Logistics base at Albany, GA.
turn the survey cards. The results why? There is no charge other than the
have been tabulated and were benefi- cost of the phone call.
cial to us in a number of ways. Not Again, the LIKEDISLIKE re-
only did you reaffirm Bench Briefs as sponse to this question was about "Our FAX machines use that awful
valuable publication and provide 50/50. heat sensitive paper," from a com-
some insight as to the type of articles puter systems technician at Hew-
you want to see in the future, but Almost all of the people that would lett-Packard, Scientific Instru-
many of you took the time to write order service notes through the ments Division.
comments about the questions we FAX machine liked it because of
asked. `quick access' or 'receiving the "Nothing wrong with 'service note
latest service notes,' (the only order form` on back of Bench Briefs,"
1. How valuable is Bench Briefs to choices on the card). However, wrote an electronics engineer with
you? most of the people that disliked the U.S. Government in Redwood
FAX service notes commented City, CA. Sorry, but we just don't
Over 90 percent answered very have the manpower or funds to
valuable or extremely valuable. "poor paper quality" as the main
factor. send out large quantities of service
notes through the mail.
2. What types of article do you find
the most useful? "Thermal paper curls and browns over
time," wrote an Equipment Spe- Second most cited dislike was lack
85 percent of the cards checked cialist in the U.S. Army at Adelphi, of a FAX machine.
technical subjects. MD .
80 percent of the cards checked FAX paper quality did not occur to
cross references. F A X "does not save time and has to us here because we use HP`s plain
70 percent of the cards checked ser- be copied for filing," from a reader paper FAX machine. In all of our
vice tips. at Pamtec Corporation. tests using the HP FAX-310, the
quality of the text and artwork re-
3. If you could receive two addi- "Backlog of our FAX is very large," ceived from HP FIRST were out-
tional issues per year through from a lab coordinator at Motorola/ standing.
your FAX machine, would you re- Codex in Canton, MA.
quest them? 5. Personal Information.
The yes/no response to this ques- "I support several hundred H P prod- Some people sent in address
tion was about 50/50. A reader ucts," wrote an engineer at Norwe- changes on the cards. However, in
from Tektronix in Beaverton pen- gian Telecom. That could be an ex- most cases the handwriting was so
ciled in "Maybe, if less than six pensive phone bill. small that it was not legible. Please
pages." It is hard to keep Bench send a letter with your address
Briefs within six pages due to the "FAX line in overload mode already. changes to the editor at the address
list of new service notes. Are there charges for HP FIRST and on the back page of Bench Briefs.
0
1994 Customer Service Training Callendar
Sally CarstensenlHewlett-Packard Ordering Instrument Service Training through 1-800-HP-CLASS. Registra-
is easy. Simply contact your local HP tion is processed via the HEART sys-
Learn Service Skills Through Sales Representative and tell him or tem. Also, all of the following classes
In-Depth Technical Instruction her which courses you wish to attend. are being taught at the Hewlett-Pack-
If you require a course on an instru- ard Santa Rosa, California site, 1400
Hewlett-Packard service training ment or instrument system not listed Fountaingrove Parkway, Santa Rosa,
courses are designed to provide in- on the calendar below, ask your Sales CA 95403-1799. For more informa-
depth technical instruction for main- Representative if a special arrange- tion, call (707) 577-3587.
tenance personnel seeking the skills ment can be made.
needed to troubleshoot, repair, and
maintain HP instruments and instru- Customers that sign up for the
ment systems. Course concepts are courses listed in the following table
taught through a balance of theory Note to HP Sales Representatives: will receive instruction on the entire
and practical hands-on exercises. These classes are not available product family.
4 BENCH BRIEFS 2ND. 3RD & 4TH QUARTERS 1993
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Install and run the operation verifi-
`Tuition per cation software
Content Dates Student
w Explain what defective assemblies
HP 8593A Spectrum Analyzer Jan 25-28 $1,400 are likely to generate common error
HP 85668 Spectrum Analyzer Feb 02-10 $2,520 messages
HP 8562A Spectrum Analyzer Feb 14-18 $1,800
HP 8562A Spectrum Analyzer Jut 11-15 $1,800
HP 8593A Spectrum Analyzer JuI 18-21 $1,800 Format
HP 8566B SpectrumAnalyzer Jul27-A~~ 04 $1,800
Lectures accompanied by labs, with
HP 8720C Network Analyzer AUg 15-23 $2,520 review quizzes. Labs compose ap-
HP 8711A Network Analyzer AUg 24-26 $1,080 proximately 50 percent of the seminar
HP 8643A Signal Generator Sep 19-23 $1,800 and provide "hands-on" trouble-
shooting and adjustment experience.
8562A 8593A 85668 8711A 8720C 8643A
* 8560A 8590D 8566B 8711A 8719C 8643A
8560E 8591E 8567A 8720C 8644A Prerequisites
. 8561E
8562A
8592D 85688
8593A
8722C 8644B
8753C 8664A
Attendees should be familiar with
spectrum analyzers, at least to the
8563A 8593E 8665A simplified block level diagram. For
8563E 8594E 8665B maximum course benefit, the student
8595E should have previous experience re-
8596E pairing RF/microwave spectrum
L
analyzers and RF/microwave signal
sources.
Course Goals Look up information regarding the
instruments in the proper section *Tuition is per student and includes all course
of the documentation materials and lunch daily. Tuition does not include
Upon completion of these courses, travel, hotel, or transportation.
bench technicians will be able to: rn Identify and replace defective
c w Explain the operation of the spec-
trum analyzers to the block diagram
printed circuit or other subassem-
blies, as well as make the necessary
level post-repair tests and adjustments 0
Attention HP 8920 Owners -
Get E-Mail Answers to your Service-
Related Questions on MP's 8920 RF
b
Communications Test Equipment Family
HP 8920 Service Engineering TeamlHewlett-Packard
J Hewlett-Packard has always encour- ternet). UNIX* Mail, Compuserve,
aged customers to contact their local Genie, and America Online are only Our response-time goal is same-day
Service Centers for help on service- a few of the services that provide this or next-day reply. HP 8920 service-
related questions. However, for many Internet connection as a means of related questions will be read each
customers this may not be convenient sending E-Mail. Send service-related morning and the reply should be
for a variety of reasons. Now another questions to the following E-Mail mailed by the end of the next day. In
option exists. Customers can now address: addition, if you have comments on
send HI` 8920 service questions via any aspect of your 8920 family of
Internet E-mail directly to Hewlett- [email protected]. products, including how well you like
Packard. hp.com the product, feel free to send us those
f To communicate with the HP 8920 Note: This is not the same service as
as well.
Product Support Group, you will the Hewlett-Packard Parts Bulletin `UNIX is a registered trademark of UNIX Systems
need an E-mail service connected to Board Service and Automated Telefax Laboratories in the U.S.A. and other countries.
the International E-Mail Network (In- (1-800-635-7278). 0
2ND, 3RD & 4TH QUARTERS 1993 BENCH BRIEFS 5
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IS0 9002 and the W 3070 Family
P
06 Board Test Svsrterns
~ 9 InterpretationOBSO 9002
s
Dick S trackerlHewlet t-Packard 8 IS0 9004
provides guide-
Introduction lines to quality
management and
Although IS0 9000 is quickly becom- quality systems elements (16 pages).
ing a recognized method of quality
certification, it does not guarantee
quality products or services by itself. ConfusionAbout the Standards
It is a method of documenting the pro-
cesses a business uses to guarantee One of the confusing parts of the stan-
the quality of its product. dards is in nomenclature. The stan-
dards go by several names: Q-90 in the An organization should seek to ac-
IS0 9000 is not a program, but a way United States, B 5750 in Britain, and
S complish the following three objec-
for customers to confidently judge an EN 29000 in the EC. Table 1 shows how tives with regard to quality:
organization's ability to guarantee the these national standards relate to the
quality of what it produces. IS0 9000 international IS0 standards. 1. Achieve and sustain the quality of
standards are worldwide guidelines the product or service produced to
for developing a documented quality In the U.S., for example, the IS0 9000 continually meet the purchaser's
system. standards have been adopted by the stated or implied needs.
American National Standards Institute
These standards are not product-level (ANSI) and the American Society for 2. Provide confidence to its own
standards in the sense that a label Quality Control (ASQC). Identified as management that the intended
would be found on the back of a unit. the ANSI/ASQC 90-1987 series, these quality is being achieved and
The standards assess the organization standards are technically equivalent to sustained.
that builds the product or delivers the the corresponding IS0 9000 standards
service. Keep in mind that IS0 9000 with substitution of American lan- 3. Provide confidence to the purch-
alone will not guarantee quality. It guage usage and spelling. aser that the intended quality is
simply documents the process a com- being or will be achieved in the
pany uses. delivered product or service pro-
Implementing the Standards vided. When the contract requires,
What Are the I S 0 9000 The key to successful IS0 9002 certifi- this provision of confidence may
Standards? cation is to: involve demonstration require-
ments.
IS0 9000 actually consists of five sepa- 8 Document what you do,
rate standards, each with a specific A common misperception in dealing
8 Do what you document, with IS0 9002 is that it absolutely re-
purpose. These individual standards
are neither highly detailed nor vol- 8 Demonstrate proof that you're quires that specific conditions are
uminous. They are concise guidelines: doing it (quality records). met. It does require that specific
categories be addressed, but it is actu-
IS0 9000 provides guidelines for Following is an attempt to define the ally quite flexible in how the
the selection and use of quality Hewlett-Packard Manufacturing Test categories are addressed. The stan-
management and quality assurance Division's stand on IS0 9002 with dards are designed so that they can
standards (6 pages). regard to the HP 3070 Board Test be used with almost any type of pro-
System. cess. It might be helpful to think of
IS0 9001 describes a model for
quality assurance in desigdde-
velopment, service, production, in-
Table 1. National Equivalents to IS0 9000
stallation, final inspection, and test
(7 pages). International United States European British
IS0 9002 describes a model for I S 0 9000 ANSVASQC Q90 EN 29000 BS 5750 Part 0,
quality assurance in production, in- Section 0.1
stallation, final inspection, and test IS0 9001 ANSVASQC Q91 EN 29001 BS 5750 Part 1
(6 pages). I S 0 9002 ANSVASQC Q92 EN 29002 BS 5750 Part 2
IS0 9003 describes a model for IS0 9003 ANSVASQC Q93 EN 29003 BS 5750 Part 3
quality assurance in final inspec- I S 0 9004 ANSI/ASQC Q94 EN 29004 BS 5750 Part 4
tion and test (2 pages).
BENCH BRIEFS 2ND, 3RD i 4TH QUARTERS 1993
3
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the IS0 standards as a method of vide to our customers in order to help the system during the automatical-
standardizing the documentation of them meet the IS0 9002 standards. ly scheduled confirmation run. If it
unique processes. can be set up properly, it fits in well
h) Do not confuse the IS0 9000 Quality with the IS0 9002 philosophy. For
As an example of the difference be- System standards with the NIST Phys- more information, check with your
tween meeting specific conditions ical Measurements standards; they are local HP office.
and addressing specific categories, as- two separate sets of standards.
sume that the test department of a AutoAdjust, a software program
company uses several different types that sets up a table of constants to
In general, HP's position is that com-
of equipment to test various products. optimize accuracy of the hardware,
panies need to write their processes runs automatically whenever the
Perhaps the company has some volt- according to what they are now
meters (which are easily traceable to temperature changes by 5 degrees
doing. Obviously, this approach C or after 1000 hours of controller
NIST standards) and some board test should not require any new informa-
systems (which are not easily trace- operation.
tion from HP. For example, consider
able). The IS0 documentation in- the equipment calibration illustration w A golden board is tested by the sys-
cludes a section on the processes used discussed in this paper. The company tem at the beginning of every shift.
to maintain test equipment and this described in that example will not If it does not pass, the diagnostics
particular company might describe need any additional informationfrom program is run to determine if the
the maintenance of their test equip- HP to write its IS0 documentation. system has a hardware fault.
ment as including periodic calibra- Its documentation will be'sufficient if w If three boards in a row fail in an
tiodadjustments for the voltmeters it simply describesthe company's cur- identical manner, testing is
and periodic preventive maintenance rent operating processes, which do stopped and the diagnostics pro-
for the board test systems. Such a de- not include such items as calibration gram is run to determine if the sys-
scription would meet the IS0 stan- or special files with constants from tem has a hardware fault.
dards because it addresses the specific HI'.
category of test equipment mainte-
nance. However, note that it does not Summary
impose the specific condition of cali- Statements About the HP 3070
bration for every piece of equipment The IS0 9002 standards can improve
in the test department. The IS0 stan- The following statements are exam- quality through improving the
dards do not require that every piece ples of processes that can be used to documentation and consistency of
help ensure that the HP 3070 family
9 of equipment in the test department
be maintained in the same way and of systems are making accurate mea-
processes. The IS0 audit checks for
two very important items: the effec-
they certainly do not require calibra- surements. All of these statements, tiveness of the processes themselves,
tion for all equipment. or some subset of these statements, and the degree to which all workers
can be included in IS0 9002 documen- in the organization follow the proces-
The key to meeting IS0 9002 require- tation as a description of the specific ses. HP is committed to remaining
ments is consistently meeting docu- processes you use to ensure a certain certified to IS0 9002 and we look for-
mented processes rather than meeting level of performance. There are ward to working with our customers
arbitrarily prescribed processes. numerous other statements that can to meet their ongoingIS0 9002 needs.
be included in IS0 9002 documenta-
tion; the ones listed below are merely The HP 3070 board test systems are not
Ramifications of I S 0 9002 to the examples to illustrate the types of traceable according to Military Stan-
Customer and the Field statements that are acceptable. dard 45662A. However, standard refer-
Twenty voltages and one resistance ence voltages and a resistance on the
Since the HP 3070 family of systems on the ASRU Card are calibrated ASRU card in the HP 307X should be
is typically used in a production envi- once every six months. A traceable calibrated every six months, which are
ronment, and since the production HP 3458 voltmeter is used to per- then used to automatically derive all
environment is typically the first place form the calibration following the other system AutoAdjustment con-
that companies begin to establish IS0 written procedure in the Service stants. The system Diagnostics and
9002 documentation, many customers Manual, Theory and Repair 11, AutoAdjust routines constitute an
are requesting certain specific informa- Chapter 9, Maintenance. overall system operational verification.
tion about HP's systems. From the cus-
rn Confirmation, a software program
tomer's point of view, their requests AutoAdjust is used to correct the vol-
that provides an operational verifi-
make sense because they want to in- tage, resistance and timing values
cation of the system, is run daily
clude certain descriptions and require- measured within the system.
ments in their IS0 documentation. by the first operator who uses the
system, or at the beginning of each Note: This is a dc and timing optimi-
From HP's point of view, it is some-
shift. zation only and not parametric in
times difficult to locate and communi-
> cate the information requested by
every customer, especially since each
Note: Confirmation can be run au-
tomatically at any desired interval
nature.
request is often unique. Thus, HP has by scheduling it into the HP-UX Companies whose quality systems
a dilemma in terms of deciding what "cron" program. This option re- comply with MIL-Q 9858, MIL-I-
information we are obligated to pro- quires that every user be logged off 45208A, or MIL-STD-45662A already
2ND, 3RD & 4TH QUARTERS 1993 BENCH BRIEFS 7
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have the majority of requirements in customer-accessible interfaces ( i -fx 1 Traceable to NIST (National Insti-
place. IS0 9002 standards, though, ture interface pins) do not require tute of Standards and Technolod
" ,I
require more sophisticated cross- separate calibration procedures. standards.)
functional integration of your organi-
zation then is usually expected in a
military standard audit.
Minor effects on the system measure-
ment accuracy due to the interconnec-
tion paths have been eliminated by
Part of the LMC Qualitv ,Svstem
. ,
which is IS0 9002 approved.
r
the system diagnostic programs and
After field calibration (by the traceable remote sensing techniques allowed The low level specifications (e.g.,
voltmeter) of the system ASRU cards, for by the system design margins. driver slew rate and receiver accu-
a sticker should be placed in a visible System Confirmation and Diagnostic racy) have been verified with instru-
location on the front of the system programs are used to obtain a high ments calibrated by the Loveland
indicating that the ASRU cards have level of confidence in the overall sys- Manufacturing Center's (LMC) IS0
been calibrated according to the Ser- tem operation. 9002 certified Electronic Maintenance
vice Manual, Theory and Repair 11, facility. The Electronic Maintenance's
Chapter 9. instrument calibration procedures
We assure correct system operation
to the fixture interface pins. Any ver- employ transfer standards traceable
This sticker should be one agreed to NIST through the LMS Standards
upon by the customer and HI', or ification of measurement accuracy at
contact to a device under test is the Lab.
whatever sticker the local area uses.
responsibility of the user.
At no time should any other types of The high-level specifications (e.g.,
calibratiodadjustment or functional component accuracy) have been veri-
verification stickers be placed on the All HI' 3070 board test systems have fied by measuring the values of "cali-
board test system by HP personnel or been tested and calibrated at the brated" components. Special HP 3070
the customer. Definitions on the use Loveland Manufacturing Test Divi- test fixtures containing the "cali-
and meaning of any other type of sion of Hewlett-Packard to insure that brated" components are maintained
stickers do not exist for Hewlett- all warranted specifications (refer- by the Standards Lab. The fixtures are
Packard HP 3070 products and their enced in the HP 3070 Board Test Fam- calibrated yearly.
use may lead to confusion later as to ily Test Methods & Specifications
what service had been performed for document P/N 5954-8683) are met at A Certificate of Calibration is issued
the customer. the time of shipment. Specifically, with every system to document that
when the HP 307X testhead is shipped warranted specifications are met at
It is HP's position that the intercon-
nect paths between the calibrated
from the factory, the operation
specifications have been verified by
the time of shipment. Calibration
stickers are not affixed to the system c
components of the system and the performance tests; this process is: upon delivery to the customer. 0
1993 Bench Briefs' Instrument
Service Note Index
HP FIRST (208)344-4809
T & M Section - Press 4
Password Section - Press 3
Password - 76683
SN SN Abstract HP FIRST
Type No. Document ID No.
MR 10762B-01 SwitchesS1, S2 and S3 may be subject to early failure 5871
MR 11713A-02 Modification reduces noise susceptibility 5886
MR 11729C-04 Retrofit instructionswhen replacing the AT2 isolator 5856
IO 11740A-01 Suggested external HP-IB filter replacement 5819
MA 11757B-02 New EEPROMkounter board eliminates spurs 5843 f -
MA 11758U-01 New EEPROM/counter board eliminates spurs 5844
MA 11758V-01 New EEPROM/counter board eliminates spurs 5845
MR 11759C-01 Modification prevents fuse blowing in 22OVAC operaton 5846
8 BENCH BRIEFS 2ND, 3RD & 4TH QUARTERS 1993
WWW.HPARCHIVE.COM
__
SN SN Abstract HP FIRST
Type No. Document ID No.
MR 11759D-01 Modification prevents fuse blowing in 22OVAC operation 5847
SM 2813-1093-01 Info on repair of HP 2813A thru 2813E pressure probes 5899
IO 3047A-02 Suggested external HP-IB filter replacement 5814
10 3048A-01 Suggested external HP-IB filter replacement 5815
IO 3048MS-01 Suggested external HP-IB filter replacement 5816
IO 3455A-29 Input capacitance specification change 5873
MR 3457A-16 Modification corrects self-test failures 5874
MR 3560A-01 F/W upgrade A.00.02 corrects S/W defects and adds enhancements 5892
MA 3562A-05B Firmware upgrade kit improves performance 5273
MR 35653C-01 Rec mod will prevent oscillations in the 10 MHz range 5805
MR 35660A-05 New power switch improves reliability 5882
MR 35665A-01 New power switch improves reliability 5883
MR 35670A-01 Modification futes sticking power supply switch 5893
IO 35670A-02 35670A is incompatible with new C1405B Vectra keyboard 5894
MR 3569A-01 Firmware upgrade A.00.03 corrects defects 5878
MR 3569A-02 Mod futes spec failure "pressure residual intensity index" 5879
IO 3577A-11A Ratio phase improved with padding caps after rec brd repair 5863
IO 3577A-16 A1 receiver board replaced by kit 5864
IO 3577B-05 A71 receiver board replaced by kit 5865
IO 3577B-06 Ratio phase improved with padding caps after rec board repair 5866
MR 3588A-06 New power switch improves reliability 5880
MR 3589A-02 New power switch improves reliability 5881
MR 37701A-04 Mod corrects automatic gain control problem on A6 assembly 5828
MR 37701A-05 New improved battery holder makes NVM battery rep1 easy 5829
13 MR 37701A-06 New firmware futes fatal error 421 when printing Datacom Grph
SM 37701A-0793-01 Option 003 retrofit instructions and pricing
5887
5830
SM 37701A-0793-02 Option 004 retrofit instructions and pricing 5831
MR 37711A-04 Mod corrects automatic gain control problem on A6 assembly 5832
MR 37711A-05 New improved battery holder makes NVM battery rep1 easy 5833
MR 37711A-06 New firmware futes fatal error 421 when printing Datacom Grph 5888
SM 37711A-0793-01 Option 004 retrofit instructions and pricing 5834
MR 3772lA-08A New F/W futes end of gating, hang-up, unavailable freq offset 5852
MR 3772lA-10 Modification to correct CCITT return loss specifications 5889
MR 37721A-11 New F/W futes incorrect AIS status indication 5911
MR 37722A-01B Mod prevents hang up in Stored Measurement Graphics mode 5418
MR 37722A-02 Never ending user prog msmnt test time (gates continuously 5890
SM 37722A-0793-01 Options 002 and 003 retrofit instructions and pricing 5835
SM 37722A-0793-02 Options 005 and 006 retrofit instructions 5836
IO 37730A-01 New features of Revision 3.4 5853
MR 37732A-01B Mod prevents hang up in Stored Measurement Graphics mode 5419
MR 37732A-03 Mod futes sig loss when X.21 LEASED 1/0 set for UNTERMINATED 5891
MR 37732A-04 New improved battery holder makes NVM battery rep1 easy 5837
SM 37732A-0793-01 Options 002 and 003 retrofit instructions and pricing 5838
SM 37732A-0793-02 Options 005 and 006 retrofit instructions 5839
MR 37743A-01A Mod corrects incorrectly loaded cap on transmitter board 5698
IO 4194A-13 Instructions on repairing A20, A23, and A24 board 5789
MR 42841A-04A Rec mod prevents bias current source fuses from blowing 5405
IO 4396A-03 Repair procedure for A1 CPU 5790
IO 4396A-04 Firmware update procedures 5791
MR 4396A-05 Modification corrects A2 shutdown circuit malfunction 5792
MR 4396A-06 Mod prevents instrument from failing power on self tests 5793
MR 4396A-07 Mod prevents instrument from failing power on self tests 5794
2ND, 3RD 81 4TH QUARTERS 1993 BENCH BRIEFS 9
WWW.HPARCHIVE.COM
Abstract HP FIRST
Document ID No.
MA 4957A-01B Available option allows high speed option retrofitting 5014
MA 4957PC-01B Available option allows high speed option retrofitting 5253
MR 506lA-23 Rec IC replacement prevents failure of A l l oven controller 5786
MR 5061B-05A Rec IC replacement prevents failure of A l l oven controller 5787
IO 507lA-03A Information on clearing serial port (RS-232C) hangups 5803
MR 5342A-60 A18 modification when A24Y1 changes from 0960-0394 to -0612 5854
MR 5343A-32 A18 modification when A24Y1 changes from 0960-0394 to -0612 5855
MR 54505B-02 Mod corrects waveform distortion between 240 and 255 MHz 5876
MR 54506B-02 Mod corrects waveform distortion between 240 and 255 MHz 5877
IO 5529A-01 List of software revision A.O1.10 anomalies 5900
IO 5529V-01 List of software revision A.O1.10 anomalies 5901
IO 6010A-08 Suggested replacement printed circuit assemblies 5806
IO 6011A-09 Suggested replacement printed circuit assemblies 5807
IO 6012B-07 Suggested replacement printed circuit assemblies 5808
IO 6015A-05 Suggested replacement printed circuit assemblies 5809
IO 6030A-16 Suggested replacement printed circuit assemblies 5810
IO 6031A-18 Suggested replacement printed circuit assemblies 5811
IO 6032A-17 Suggested replacement printed circuit assemblies 5812
IO 6033A-11 Recommended replacement parts for RPG assembly and knob 5800
IO 6035A-07 Suggested replacement printed circuit assemblies 5813
IO 6038A-09 Recommended replacement parts for RPG assembly and knob 5801
MR 605OA-02 Shield reduces CCrms noise in load module 5802
MA 6632A-02 Bleeder resistor increases RFI filter capacitor discharge rate 5781
MA 6633A-02 Bleeder resistor increases RFI filter capacitor discharge rate 5782
MA
MR
6634A-02
6641A-01B
Bleeder resistor increases RFI filter capacitor discharge rate
Modification corrects relay link and eliminates error -240
5783
5429
c
MR 6642A-01B Modification corrects relay link and eliminates error -240 5430
MR 6643A-01B Modification corrects relay link and eliminates error -240 5431
MR 6644A-01B Modification corrects relay link and eliminates error -240 5432
MR 6645A-01B Modification corrects relay link and eliminates error -240 5433
MR 6651A-02B Modification corrects relay link and eliminates error -240 5434
MR 6652A-02B Modification corrects relay link and eliminates error -240 5435
MR 6653A-02B Modification corrects relay link and eliminates error -240 5436
MR 6654A-02B Modification corrects relay link and eliminates error -240 5437
MR 6655A-02B Modification corrects relay link and eliminates error -240 5438
MR 6671A-01B Modification corrects relay link and eliminates error -240 5439
MR 6672A-01B Modification corrects relay link and eliminates error -240 5440
MR 6673A-01B Modification corrects relay link and eliminates error -240 5441
MR 6674A-01B Modification corrects relay link and eliminates error -240 5442
MR 6675A-01B Modification corrects relay link and eliminates error -240 5443
SM 680-1093-01 Model 680 Charter Recorder replacement supplies 5885
MA 70004A-01A Firmware Upgrade 5861
MR 70310A-05 Modification reduces 6 MHz emissions by approximately 6 dB 5841
MA 70320A-01A RPP module modification reduces noise floor of R F output 5732
IO 70900A-28 A2 video board compatibility 5784
IO 70900B-06 A2 video board compatibility 5785
MA 8112A-04B Rec rep1 of timing ICs require modifications 5503
MA 8116A-03A
IO
IO
8130A-02A
8131A-03
Replacing 24 v supply fuses with jumpers improves reliability
Firmware update possible
List of differences in mechanicaVelectrical major parts
5875
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