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SERVICE INFORMATION FROM HEWLETT-PACKARD
MARCH-APRIL 1982


New Interface Lets
HP-41 and HP-85
Personal Computers
Control Instruments and
New Peripherals
New HP Interface Called HP-IL
Wald Skowron, Hewlett-Packard

Hewlett-Packarci's top-of-the-line 80 personal mmpu The drive is designed to give the
HP-41 handheld computer can now ble with the HP-IL loop and the new HP-41 mass memory unrivaled in
control low-cost, battery-operable HP-IL Interface Card. The interface size and reliability by other cal-
systems through a new interface card plugs into the HP-85 and culators or handheld computers and
called HP-IL; Hewlett-Packard HP-83, connecting them to the to make the HP-41 capable of data
Interface Loop. HP-IL loop, enabling the personal collection and management applica-
computer to do tasks such as storing tions that previously required a
The new interfami?enables HP41C and analyzing data collected on the larger computer. The digital quality
handheld machine. This capability of the drive and the HP cassettes
makes certain applications easier, used is designed to lead to greater
such 89 mllecting customer data in performance and reliability than is
the field with an HP-41 then dump- possible with audio tapes and
ing, analyzing and storing data in drives.
printer/plotter. The multimeter is the personal computer and reload-
fully programmable and has a 12- ing it into the handheld computer. Each tape has a capacity of 131,000
character alphanumeric display. bytes of information, which would
The cassette drive uses digitally Read-only memory modules (ROMs) accommodate, for instance, all the
certified magnetic tape and for HP series 80 machines, programs from the 26 HP-41 Solu-
increases the system's memary by the UO and PZotter/Printe tions Books on one tape.
more t h a n 60 times, to 131,000
bytes. The printer/plotter File management using the drive is
bar code printing and e easy because files can be names and
graphics. recalled using names sel
the user.
Another new product is the
Converter which ie a componen Quick, bi-
signed to be built into third-party the drive to read at nine i
devices such as measurement in- second and search at more
struments. It connects the internal The HP-IL Module inches per second. It is qiiiet, and
battery- or ac-operable. The HP
HP-IL loop, 90 a wide v To use the HP-41 to control hstru- 82161 drive and
men& or peripherals on an HP-IL able
HP.
costly computer.

Additionally, HP is
ments and
trolled by
future low-c&st
The HP 82160 d e , and graphics.
Many of HP's new handheld and available now from
personal computers with input/ from HP. U.S.price i The HP 82162 provides all &he fea-
output capabilities will be able to tures of the H P 82143 Printer/
act as controllers on HP-IL loops. Cassette Drive Plotter, plus enhanced graphics,
and a larger 101-element buffer fw
The HP 82161 Digital Cassette faster printing and plotting.
Handheld Computer/Personal Drive provides 131,000 bytes of on- Another advantage is that the new
Computer Communication line mass storage, which is 50 times HP 82162, with its HP-ILmmpati-
the memory of the HP-41CV and bility, will work with all future
Communicating between HP-41 200 times the memory of the HP- HP-IL controllers as well as with
handheld computers and HP Series 41C. the HP-41.

2 BENCH BRIEFS MARCH-APRIL 1982 WWW.HPARCHIVE.COM
L.
Featurea of the The HP 82183A will be available in Hewlett-Packard
include a 24ch mid-1982 from HP dealers and from Inferheie b p Facta .
standard characters plus special HP.
characters, user-definable charac-
ters, and easy-to-use plotting Time Module
capabilities.
The new HP 82182A Time Module
The HP 82162 is battery- or ac- plugs into any of the ports of the
operable, and is available now from HP-41, providing it with a precise
HP dealers or from HP. U.S.price is clock. This makes possible jobs such
$495. as controlling devices, turning
devices on and off, and collecting
HP-IL Converter data at specific times. It is available
now. U.S.price $75.
The HP 82166 HP-IL Converter is a
component designed to be built into HP-IL Cable
other devices, such as measurement
instruments, It connects the inter- Cables for HP-IL loops come in
nal eMronics of the machine to the lengths of 0.5, 1, and 5 meters (5- Technical Background on the
HP-IL loop, thereby letting the meter cables are available only in HP Interface Loap
machine communicate d t h other U,S.A.).Cable is available now from
devices on the loop and be con- HP dealers or from HP: 82167A Why a new interface? Hewlett-
trolled by an HP-41. 0.5m cable $12 U.S., 82167B l m Packard is committed to designing
cable $15 U.S.,821671) 5m cable highly portable computational and
The converter makes it easy to en- $20 U.S. information management systems.
hance a wide variety of electronic In these systems, power consump-
instruments so they can be con- tion, size, unit cost, and obsoles-
trolled by an HP-41, rather than by Background on HP-41C and cence must be minimized. HP-IL
a much more costly computer. HP41CV combines low power, amall size, and
low cost with an HP commitment t o
The HP 82166 HP-IL Converter is The top-of-the-line HP-41Cs and continued support and new product
available now from HP dealers or HP-41CVs feature alphanumeric development.
from HP. The 82166A Prototyping liquid-crystal display, 58 keyboard
Kit contains two 82166 converters, functions, 130 total functions avail-
documentation and cables. U.S. able, user-definable keyboard, and HP-IL Designed to Match the
price is $395. A package of ten continuous memory. Powerful pro- Needs of Portable Systems
82166 converters only (Prototyping gramming tools such as looping,
Kit not included) is $1250. branching, and 56 internal flags are The Hewlett-Packard Interface
included in both models. Loop (HP-IL) was designed to match
Two other new products are the Ex- the needs of portable computational
tended I/O ROM and the Time Four input/output ports give the devices, to make them systern-
Module: HP-41s system capability. Peri- oriented. Fundamentally, HP-IL is
pherals such as the bar-code- a bit-serial, unidirectional loop.
Extended VO ROM reading Optical Wand plug into the This loop design allows for a fmed
ports, as do additional memory number of connectors at each prod-
The HP 82183A Extended YO RON modules and software modules. uct regardless of system size.
plugs into the HP-41 and gives it
several extended capabilities per- The HP-41CV is an HP41C with Information on the loop is retrans-
taining t o the cassette drive, five times the memory - enough to mitted by each device; each device
printer/plotter, and other devices. accommodate about 2,000 program supplies only enough power to drive
Included are a routine that enables lines or 319 data storage registers. the message on to the next device.
programs to be printed in bar code This "pay-as-you-go" power distri-
and a routine to copy a cassette tape The HP-41C sells for a suggested bution balances - and minimizes
from drive to drive on the HP-IL retail price of $250 U.S.; HP-
the - requirements for each partici-
loop. 41CV sells for $325 U.S. pant in the loop.
The loop's design also permits sim- operation. The system controller controller. Each device then stores
ple, uniform cables, which in turn (e.g., an HP-41handheld computer) its assigned address internally.
reduce cost. is the device that controls and in-
itiates loop communication. It can
Finally, HP-IL protocol provides for transfer control to another device,
excellent error detection. Com- which then becomes the controller
mands and data make a complete on the loop - the active controller.
circuit of the loop. The originating Similarly, an active controller can
device receives the information transfer control to another device.
back after all other loop devices (In the case of the HP 82160A
have received and retransmitted it. HP-IL Module, the HP-41 computer
By comparing returning informa- is always the system controller and
tion with what was sent out, errors the active controller.)
along the loop are automatically
detected. A talker is a device that sends in- Information Flow in the Inter-
formation to the interface loop. It is face Loop
Transmission Speed and Cable designated and enabled by the con-
Length troller. At any time, there can be no Information transmitted in the
more than one talker. The control- interface loop can be separated into
Current HP-IL configurations per- ler may be a talker. Other examples two categories: commands and data.
mit a transmission speed of up t o of talkers are a mass-storage device
5,000 bytes per second (equivalent sending data from a tape file and a Commands are initiated by the con-
to about one printed page per sec- voltmeter sending voltage troller and are monitored by all
ond). This exceeds transmission measurements. devices in the loop. Using com-
speed requirements for today's mands, the controller can initiate
battery-operated computers. A listener is a device that receives loop communication, assign or un-
information on the loop. There may assign devices as talkers and listen-
HP-IL's transmission speed is also be multiple listeners in the loop at ers, initiate the transfer of data,
well suited to many instrumenta- the same time. Listeners are desig- and - if it is the system controller
tion and test systems, particularly nated by the controller. The control- - interrupt the operation of the
in view of the current trend towards ler may be a listener. (A device loop.
distributed intelligence. cannot be a listener and a talker at
the same time, although it can have Data is sent by a talker and is pro-
HP-IL is capable of driving up to 10 these roles at different times.) cessed by all listeners. Data is ig-
meters (33 feet) of zip cord between Examples of listeners are a mass- nored by the remaining, inactive
each device. When shielded storage device receiving and storing devices. The talker begins sending
twisted-pair cable is used, the data in a file and a printer receiving data when enabled by the control-
maximum distance between devices and printing information. ler; the talker informs the controller
is 100 meters (328 feet). when all requested data has been
Device Addresses sent.

Roles of Different Devices in the In order t o distinguish between Each piece of information, a com-
LOOP devices in the loop, each device mand or data, is initiated by a
must have an address - a number device and sent around the loop.
In order for HP-IL to operate in an from one to 30. (A maximum of 31 Each subsequent device, in turn, re-
orderly manner, all devices in the devices on the loop is based on one- ceives the information and does one
loop must function according to byte addresses; up to 961 devices of the following:
their assigned roles. The role of are possible with two-byte addres- Sends the information to the next
each device is changed to suit the ses.) The controller uses the addres- device, or
operation being performed. Three ses to specify and control the 0 Processes (acts on) the informa-

different roles are defined for HP-IL devices. tion and then sends the informa-
devices: controller, talker, and lis- tion on to the next device.
tener. Any device not assigned one Even though each HP-IL device has
of these roles is inactive. a built-in address, the system con- The action a device takes depends
troller always assigns new sequen- upon the type of information re-
The controller is the o m device in tial addresses to each loop member. ceived and the role of the device in
the loop that can designate the roles These addresses begin with address the loop. The talker eventually re-
of devices and control the loop's "one" for the device that follows the ceives the information after it has
i




4 BENCH BRIEFS MARCH-APRIL 1982 WWW.HPARCHIVE.COM
made the complete circuit around frame as they finish executing the spectrum and
the loop (Figure 1).It then checks previous command. When the e.
". for transmission errors by compar-
ing the received information with
the original transmission. The next
ready-for-command frame returns
to the controller, it knows all reci-
pients have executed the previous
3. HP-IL system work at relatively
low data rates; HP-IB systems work
piece of information may then be command and are ready for the next at relatively high data rates.
sent. message.
4. HP-IL allows device separations
of up to 100 meters with shielded
HP-IL Pr0t0~01 HP-IL VS. HP-IB twisted pairs (10 meters with zip
cord). HP-IB requires extender
Each message consists of one or Although HP-IB and HP-IL serve hardware for long distance
more 11-bit "frames." How does the the same basic function - interfac- connections.
source and destination perform the ing controllers, instruments, and
handshake function? peripherals - they differ in many HP-IL is not intended as a replace-
respects: ment for HP-IB but rather as a low

On HP-IL,in most cases, the reci-
pient simply delays the frame (i.e.,
does not pass it along to the next
device) until it is ready to receive
m-
, 9

sand another frame until it
has received the previous one back.

This "Hold-until-ready" handshake
works well for data transmission
with only one recipient. Because the
`@ loop is serial, ho7aarver, this haad-
shake is too slow with multiple
recipients (e.@;., the case of
in
command messages).
niour*.l* '
cost, lower power alternative ex-
Solution: a special handshake is tending below the traditional scope
upled for commands. All devices pass 1. Because of HP-IL's lower power of HP-IB in price and performance.
along commands as rapidly as pos- consumption, it is usable with port-
sible but, in passing, make a %opf able, battery-powered systems. HP-IL adds a new dimension t o
of it. By the time the command Generally speaking, HP-IB is not. Hewlett-Packard's instrumentation
returns to the controller, recipients and computing capability. New
are busy executing the command 2. HP-IL system components will HP-IL controllers, peripherals, and
simultaneously. The controller then generally be low cost and have instruments will be added to HP's
sends a special frame called `keady moderate performance. HP-IB sys- product line on a continuing basis.
for command." Devices in the loop tem components are at the For more information contact your
pass along the ready-for-command medium-to-high end of the local HP sales office.


Customer Training Calendar Corrections
The January-February issue of Under Automatic Test, DTS-70
Bench Briefs carried the Customer Model 3060A

`e Service Training Calendar for 1982
on page 8. Please make the follow-
ing corrections to the indicated
May 17-28
26-Au13Ust
September 27-0ctober
May 17-21
July 19-23
October 25-29
months. The rest of the schedule is Cost per student $1050
unchanged. November 29-December 10
Cost per student $2100

WWW. H PARCHIVE.COM
Safety-Related
Service Notes
Service Notes from HP relating to 1332NC39 and C50 X-YDisplays motherboard assembly to the Z-axis
personal safety and possible equip- assembly. This is not only a possible
ment damage are of vital importance source of damage to the mother
to our customers. To make you more board and Z-axis assemblies, but
aware of these important notes, they constitutes a n extreme hazard to
are printed on paper with a red bor- the technician working on the in-
der, and the service note number has strument as well.
a "-S" sufEx. In order to make you
immediately aware of any potential Safety Service Note 8569A-4-S pro-
safety problems, we are highlighting vides instructions for modifying the
safety-related service notes here analyzer to eliminate this hazard.
with a brief description of each prob-
lem. Also, in order to draw your at- 8903A Audio Analyzer
tention t o safety-related service
notes on the service note order form The screw (H43) used to fasten U2,
at the back of Bench Briefs each the -15 V Regulator, to the chassis
appropriate number is highlighted (MP22) is nonmetallic. If this Bcrew
by being printed in color. is replaced with a metal screw it
may come in contact with the hot
side of the line filter, which would
place the chassis, through MP22, at
line potential.
410C Electronic Voltmeter When front handles, rack flanges,
If, during service, the U2 -15 V or rack flange and front handle
Regulator is replaced, make sure combinations are installed in units
that the fastening screw is non- with serial number prefix 2118A
metallic (HP P/N 2200-0728). and below, there is the possibility
Details are provided in Safety Serv- that the mounting screw on the
ice Note 1332MC39 and C50-1-s. lower-left corner may contact a sol-
der terminal on the LINE switch.
8569A Spectrum Analyzer The chassis will then be at line po-
tential creating a shock hazard.

Note that normal installation of the
front handles or rack flanges does
not create the hazard. The hazard is
A shock hazard may exist in units created only when a longer than
with serial numbers 0982A22339 normal screw is used or the handle/
thru 0982A22718. These voltmeters flange is removed and the screw
may have the floating guard con- replaced.
nected to the chassis ground. Tnere is a potential personnel and
equipment shock hazard in Analyz- Safety Service Note 8903A-3-5 pro-
A new circuit board support, with a ers with serial numbers vides instructions for modifying the
plastic insert to insulate the board 2128A00340 and below. When a analyzer to eliminate this hazard.
traces (guard) from the chassis, is new CRT (5083-6176) is installed in
available from HP under part these units, approximately 2500 U e the service note order form at
s
(number 410C-66A. Complete volts is applied via CRT pin 13 the rear of Bench Briefs to order any
instructions are provided in Safety (deleted on older CRT`s) through the of the above safety notes, or any of
Service Note 41OC-21. CRT cable assembly and the the other listed notes.




6 BENCH BRIEFS MARCH-APRIL 1982 WWW.HPARCHIVE.COM
427A VOLTMETER 133bA k Y DESPLAY
427A-6. Serials 0947A20851 to 0947A20972. Trou- 1335A-13. All serials. Replacement pert number for
bleshooting procedure to test an intermittent meter the model 1335A motherboards.
circuit. 1335A-14. All serials. Application of HV grease to pre-
vent arcing/break&wn of the post accelerator
4288 CLIP-ON DC MILUAMETER connector.
4286-1. Serials 0995A13884 to 0995A14023. Trou-
bleshooting procedure to test an intermittent meter lXIBA X-Y D-
1Y
circuit. 13368.2. All serials. Arc pcotection kit when a new
CRT is installed.
1302A X-Y DISPLAY (78309)
1302A-4A. Serials 1920A and 1951A. +158 Volt 1340A x-Y WSPLAY
Power supply and HV feedback Modification Kit. 134OA-1. All serials. Application of HV grease to pre-
Need Any Service 1302A-5. All serials. Application of HV grease to pre-
vent arcing/breakdown of the post accelerator
vent arcingmteakdown o the post ecctnktrator
connector.
f

Notes? connector. 13ooA.2. AU SWW.
x-Y Ctispkys.
Improved CRT for model 1
-

1304A X-Y DISPLAY 134OA-3. MI serials. M&caUon to improve -15V
They're free! 1304A-4A. Serials 1715A and 1920A. Modification kit and -7SV supply psrtormance.
that improves reliability of the +158V power
Hem's the latest listing o Service
f SWPlY. l245A X*Y WSPLAY
1304A-5A. Serial 1920A for Option C15. Preferred Application of HV grease to pre-
Notes. They recommend modifica- Replacement for A Motherboard 01304-93020.
1 kdown of the post amehwator
tions to Hewlett-Paekard instru- 1304A-6. All serials. Application of HV grease to pre-
vent arcing/breakdown of the post accelerator
ments to increase reliability, im- connector. 13515 GRAPHICS GENERATOR SYSTEM
prove performance, or extend their 13515-1. All serials. List o rebuilt
f evall-
1310AB X-Y DISPLAY able on the blue gtripe board exchange program.
usefulness. 131OA-21. All serials. Application of HV grease to pre-
vent arcing/breakdown of the post accelerator 1-A L W C STATE ANALYZER
Use the order form at the rear of connector. 16OOA-O. Service note index.
Bench Briefs to select the notes that 131OB-1. All serials. Application of HV grease to p r e 16OOA-4, Seriak 2009Ao5804 and below. Recom-
mended replacement proaedure for I AIUBO.
C
vent arcing/breakdown of the post accelerator
relate to your imtruments. connector.
1607A LOGIC ANALYZER
331ABS2A DISTORllON At4ALYZER 1607A-0. Service note index.
1311A/B X-Y DISPLAY 1607A-2. Serials 2005A-04086 and kkw. Recom-
331N332A-t4. All serkls. T r o u b h b o t i i procedure 1311A-21. All serials. Application of HV grease to pre-
to tegt 8n i m m t meter circuit. mended replacransnt procedure fr E AIUBO.
o
vent arcing/breakdown of the post accelerator
connector. lSlOA/B L W C STATE ANALYZER
W 3 3 4 A D1STOAnow ANALYZER 13116-5. All serials. Application of HV grease to pre- 161OA-13. Serials 2134A-02062 to 213411-02071.
333-A-14. All serials. Troubleshooang p r d u r e vent arcing/breakdown of the post accelerator Recommended modification to correct
to test an intermittent meter circuit. connector. s i g d s on the TRlGGER OUT, MEAS
OUT POS and MEAS ENABLE OUT
1 O E f L/QL AC VOLTMETER
o y Wf
4OOE-12. Serials +208A2700@ 1208A2f405. T W
to 1317A/B X-Y DISPLAY Panel
1317A-8. All serials. Application of HV grease to pre- 161Q53. to2111A-01194. Aec-
p~oceduns test an intennittent meter
to ommended modificationto OOTred SpWiaLs *Qni@s
vent arcing/breakdown of the post accelerator
connector. on the TRK;GER OUT, MEAS ENABLE OUT POS
400EL-fi. Serials 1208826214 lo 1208A27393. and MEAS ENABLE OUT NEG rear paw BNC
T t w b b s h m t m p r d u r e to test an intarmitten1 13176-1. All serials. Applicatcon of HV grease to pre-
vent arcing/breakdown of the post accelerator coonectors.
meter circuit.
4OOF-6. Serials 095OA13388 to 0950A13597. Trou- connector.
bleshooting procedure to test an intermittent meter
1611A LOGIC ANALYZER
1611A-10. Serials 2017A-03322 and below. Rewm-
circuit.
W f L - 6 . Serials O A 1 3 3 6 0 to 095aA13657. Trou- 1321A/B X-Y DISPLAY mended replacement flyback transformer.
bleshooting procedure to test an intermittent meter 1321A-8. All serials. Application of HV grease to pre-
circuit. vent arcinghreakdown o the post accelerator
f 161SA L W C ANALYZER
4oooL-2. Serials 0$43AOWW to 0943A03708. Trow conwor. 1615A-0. Service note index.
-b pracedwe to test an intmittent meter 13215 1 . All serials. ApplWion of HV grease to pre- 1615A-5. ZWA-OBS9 and WW. Rec~m-
drcuit. vsnt arcinghreakdown of the post accelerator mended replacement nvbrpck tramfmner.
connector.
4038 AC VOLTM 16468 SERlAL DATA AMALYZER
403812. Serials 0988A25253 to 5461. Trw- l 3 3 W C 3 S AND CSO X-Y MgPLAY 16406-3.Serials 2044A. (Uoitsshipped betwean June
bleshooting procedure to ts an intermittent meter
circuit.
et 13#3
32c9 end cm-1-3. At! SeraE. wi &rt to 1st and lryntst la, 1Sl)~ W d s b s c t i v lwrix
e
prevent possibility of pkieing chessis at line poten- panel shorting pins for test prolms.
tial after servicing.
41oC VOLTMETER omuascOpE
1710~
41OC-20. Seriak OggZAmn to 09(12A22462. Trow
1332A X-Y DISPLAY 174OA-18 6282.
Meshooting proctrdure to test an intermittent meter Preferr in the
circuit. 1332A-13. All serials. Application of HV grease to pre-
vent arciqdkeakdown of the post accelerator +lXIV power w@y.
4106-21. Serials 0982A22339 through 0982A22718.
Modication to eliminate potenlkal shock hazard. connector.
41OC-22. Serials with Bdcd state amplifier boaud (A3) 1332A-14. All serials. Replament part number tor
174lA O ~ L L o 8 c o f E
P/N OM1096502. C X m m in mptlfkw current the model 13324, motherboards.
1741A-11. Seriak 2 0 1 7 A O 5 O W t h ~
2017AO7535.
adjustment procedure in operating and service Modification to reduce low voltage power tram-
manual (P/N 00410-9O009) 1333A X-Y DISPLAY former faibe caused by capacitor shorting.
1333A-8. AU serials. Application of HV grease to pre-
419A DC NULL VOLTMETER vent arcing/breakdown of the post accelerator 1742A OSCILLOSCOPE
419A-11. Serials 0948A06923 to 0848A07006. Trou- connector. 1742A-4. 2021AO1121 tluaugh 2021A01952.
bleshooting procedcure to test an intermittent 1333A-9. All serials. Replacement part number for the preferred replacement for capacitor A16C21 in the
meter circuit. model 1333A motherboards. +12ov power supply.




WWW. H PARCHIVE.COM M A R C W R I L 1902 BENCH BWFS .J
f U
3106A RNS VOLTULfER
3400A-12. Serials 1216-78 to 1218A28870.
Troubleshooting procedure to test an intermittent
meter circuit.
3762A4. All serfrds.
3406A BROADBAND SAMPLING input thermistor.
VOLTMETER 3762A-5. M a t s 21
3406A-10. Serials 1722A06222 to 1722A06322. plamnent for #ne
Troubleshooting procedure to test an intermittent
meter circuit.
power transformer falure caused by capacitor
sholting. 3435A DIGITAL MULTIMETER
3435A-6A. Senals 1606AO7700 and below. M i c a - 25u
10 beEarv. R
1980ryS QSGILLOSCOPE MEASUREMENT tion to improve high frequency response.
SYSTEM
1980NB-5A. Serials 2131A- and below. R e m - 3458A DIGITAL VOLTMETER 3?7lA/B DATA LINE
mended HP-I8 TalWListen and HP-I8 ROM 3456A-8. Serials below 2015A00381. Modification to
repkmt. improve A4 matn controller board.
3456A-10. All serials. Procedure to sei& the correct
value of resistance for A20R150.
3456A-11. All serials. HP-IB Signature Analysis
modules

ormance o mea-
r 3490A MULTIMETER WITH OPTION 030
349OA-17. All serials. Spare parts and troubleshooting
information.

349845 SCANNER
.. - 3496548. All serW. improved Option 008 (Signature
Analysis) confirmati test.

3497A DATA ACQUISITION/CONTROL UMT
3497A-5A. All serials. Product support package
03497-69900.
3497A-78. All serials. New crystal handling procedure
3779824. Instructions on the instalktitw of 37798
during blue stripe board exchange for the 03497-
opt Ha.
69502 Mainframe lnguard Conhdler Board.
system configuration/confirmation/diagnostic
3S70A NETWORK ANALYZER 37&0A PATTERN @ENERATOWERROR
3570A-13. All serials. Recalibration of phase vs fre- DETECTOR
~ . N o t i i o f t w o '
2128 configuratin/co quency after repair.
3570A-14. Serials 1331A02076 and greater. New
3080A-33. All serials. 3080A system software pack preferred replacement A14 phase detector board.
contents.
306OA-34. All serials. Testing driver general pwpose 3581A/C WAVE ANALYZER
minimize possibitity of intermittent failures.
relays. 3581A-8. 3581A serials 1351AO1391 to 1351A02035;
3780A-22. All serials. Instrument Rack Mopmt Retrofit
. CCD revision 2128 modification 3581C serials 1411A00176 to 2114A01495. Rec-
Kit.
of scanner general purpose re- ommended procedure for replacing bandwidth
378OA-23. All serials. Preferred replacement of ther-
swttch (52) on the Rev A board.
mistor (A25R1).
2141.
mation/ 3582A SPECTRUM ANALYZER
3582A-6A. All serials. How to identify and retrofit re-
All seriadri. hnpnwed option 008 (signa- placement fans.
ture analysii) conArm&ion t s .
et 3582A-106. All serials. NoMcatiiun of availabihty of
field service kit 03582-69800 for 3582A Spectrum
3259A ANALOG sflYULUS/RESPONSE Analyzer.
3582A-11. All serials. Notihcatiun of availability of field k 2049U00201 and below. Redvction
Urn Producl Support Package 03582-69900.
3253A-5. Serials 1814AOO742 and above. Reducing
3582A-12. Senals 1809A03092 and above. Preferred
offset at the output of A13 source amplifier. replacement RAM board. 3782A/B ERROR DETECTOR
3253A-6. All serials. Reducing noise injected into
3762A-1. All serials. Preferred replacement of ther-
ASRU external source/detectors.
3585A SPECTRUM ANALYZER mistor (A25R1).
3585A-6A All serials. Notification of availability of 37828-3. All serials. Preferred replacemeot for auxil-
3310MB FUNCTION GENERATORS Product Supporl Package 03585-69900 for 3585A liary transformer.
3310A/57A. 3310A serials 1151A11370 and below; Spectrum Analyzer. 378254. Seria4s 2123U00201 and below. Muction
33108 sgilals 1201AOW20and Wow. M f i a t i 3585A-7. All serials. Notification of availability of of power dissipation of thermistor (A25R1).
to eliminate distortion in triangle and ramp modes. service kit 03585-69800 for 3585A Spectrum
Analyzer 37938 DIFFERENTIAL PHASE DETECTOR
3336A/B/C SYNMIESIZER/LEVEL 37938-2. Serials below 00256 (STD, Opt 013, 078
3!%6A/B/C SELECTIVE LEVEL METERS and 019 instruments). Preferred replacement for
GENERATOR
3586A/B/C-29 Serials 1927A00231 and below A3E1 12.140 MHz TCXQ.
3336A/B/C-4. 3336A serials 1930A00409 and below;
(3586A), 1928A00284 and below (35868);
33368 serials 1931- and below; 3336C SB-
1929A00195 and below (3586C) Retrofit kit for 4191A RF IMPEDANCE ANALYZER
rials 1932A00276 and below. Procedure for re-
Revision 8 software
/C Rev A, Rev 8 or Rev C power 4191A-5. Serials 193OJ00127and below. Modifsa9tin
board) with the 3336A/B/C Rev D to improve IF signal channel balance.
37308 DOWN CONVERTER 4191A-6. Serials 1930J00123 to 00127; 1930JOO120
333614 serials 1930A00480 and below; 37308-1. Serials below 00228. Modification to im- and M w Maliticetion to eliminate Cvsprey W -
o . u
and Wow; 33366 se- prove AFC lock-up.
Modificat~on en-
to 41
of the 3336A/B/c
3745A/B SELECTIVE LEVEL MEASURING 41
allatton of Option 004 SET
3745A/B-30C. 3745A serials 20321) and below; physical shocks.
4191A-9. Serials 1930J00174, 00175, 193(M00171 5328A UNIVERSAL COUNTER 5420A-22A. 5441A Display Transport Assembly.
and below. Modification to improve internal DC 5328A-35 All serials Option 021 performance test Modification to improve performance.
bias. update 542OA-27. Serials 2116AoO766 and below. New HP
4191A-I 0. Serials 193OJ00240 and below. Modifica- 5443A ON/OFF PoWer Switch P/N 3101-2329.
tion to the A1 VTO Board (and the A33 VTO Board 5335A UNIVERSAL COUNTER
for Option 002) to improve the output signal level at 5335A-5A All serials Modification to prevent Input 5423A STRUCTURAL DYNAMICS
A l p 2 or P1. Buffer/Amplifier failures ANALYZER
4191A-11. Seriats 1930JOO240 and below. Modifica- 5335A-6A All serials Revrsion of A1 Power Supply 5423A-0. All sariak.
tion to the A2 Divider Board to improve Adjustments 54234-1. serials 21
performance. 5335A-7 All serials 5335A HP-IB verification program
using the HP 85A controller
4192A LF IMPEDANCE ANALYZER 5335A-8 All serials Key Cap part number 5421A VlBRAflON CONTROL SYSTEM
4192A-6. serials 2045J00113 throu@h 26455o0202, replacements 5427A-6. All serials. How to use and interpret the
i and 2045JOO204 through 2045J00207. Modifica-
tion to the bias fuse ( A l F l ) on the A1 Range
5335A-9 All serials Performance test for the 5335A
and all Opttons
5427A self-check prcgem.
5427A-7. All %rials Self-check hookup.
f Resistor/Null Detector Board to improve 5427A-08. All M a t B mitch register cable
performance. 5340A MICROWAVE FREQUENCY modification.
COUNTER
4 a A TR IMPAIRMENT 5340A-21. All seriils. Option 006 Microwave Limiter
Ms1C FOURIER ANALYZER SYSTEM
SET Retrofit. 5451C-0. Au serials. Service note index.
4935A-1. Serials 2115A00905 and below. Modification
to eliminate a potential switchboard trace problem. 5342A MICROWAVE FREQUENCY [iSBlA LASER TRNJSDWER SYSTEM
COUNTER '5501A-0. ALL SERIALS. Service note index.
W 2 A TRANSlPllSSlON IWPAIRMEHT 5342A-31. All serials. Option 006 Microwave Limiter
YEASURINQ SET Retrofit.
4942A-7. All serials. Modiffcation to the A0 Modem 5342A-32. All serials. HP-IB verification program 6012A-I. Serials
Assembly to ensure vaiid modem sdf-chedc. using the HP 85A controller. monitor resistor
5342A-33. All serials before 2125A for line filter and 60t2A-2. Senak 2
4943A TRAW%IW143510NWAIRMENT varistor upgrade; all serials before 2142A05041 for stallation hardware.
MEASURING SET power transistor upgrade. Power supply reliability 6012A-3. Serials 2121A-00380 and below. Modifica-
4943A-10. Serials 2015A-00446 and below. Modiftca- improvement. tion to stabilize control board in PCB edge
tion to the A8 Modem AssemMy to ensure valid connector.
modem setf-check. 5343A MICROWAVE FREQUENCY 6034A HP-IB POWER SOURCE
COUNTER
4944A TRANSMISSION WPAIRMENT 6034A-1. Serials 2115A-00220 and below. Board
5343A-IO. All serials. Option 006 Microwave Limiter modification to delete MICA insutator.
MEASURING SET Retrofit. 6034A-3. %ri&s 2134A-022oO and below. Modi#ca-
49441\-9. Serials 2027A-OlW1 and below. Modifica- 5343A-11. All serials. HP-I8 verification program t i to eliminate power-on hang-up.
tion to the A8 Modem Assembly to ensure valid using the HP 85A controller.
modem self-check. 62568,621898, eZerB, W B , 6267B,6271B,
5345A ELECTRONIC COUNTER 62WB DC POWER SUPPUeS
5001A MICROPROCESSOR EXERCiSER 5345A-18. All serials. ROM part number changes. 62568-3/62630-4/6264 668-4/62678-3/
5001A-2. Serials 2040/\00321 and below. Power Fuse 5345A-19. All serials. HP-18 verification program for
(Fl) replament. 627185/827452. A serials. hnproved reliability
H
5345A Option 011. change in RFI fiber assembly.
5345A-20A. All serials. HP-IB verification program for
500lC RUCROPROCESSOR EXERCtSER 5345A Option 012 using the HP 85A controller.
5001C-2. Serials 2104A0011 to 2104A00125 and 5345A-21. All serials. HP-lB modification for Option
2128A00126 to 2128A00140. Modification to pre- 012 compatibility with HP IOOOL series computers.
vent shorting the clock dnver switch with crystal
oscillator. 5355A AUTOMATIC FREQUENCY assembly.
CONVERTER 6259B-5/62808-4/62618-4/6268B-4/62698-6. Se-
5W5A DIGITAL IC TESTER 5355A-1. Serials 2016 and earlier - method to cor- rials M35A-01215 and below (62596); serials
5045A-23A. All serials. New DAC ( A l l ) Adjustment rect 5355A miscounting by the attenuating output 2031A-2495 and below (62608); serials 2034A-
specifications. of A14 VCO. Serials 2020 and later - procedure 01590 and below (62618); serials 2034A-04150
! i 2 4 a ELECTRONIC COUNTER to adjust A14 VCO output level after AI 4 servicing. and below (62686); serials 2033A-05820 and
5245L-9. Serials 2004A and below. Preferred re- below (62696). Fan changes for improved
placement (HP P/N 2100-3891) for the power 5356A/B MICROWAVE FREQUENCY reliability.
switch/sample rate control (old HP P/N CONVERTER HEAD 6259B-6/6260B-5/626185/62688-5/62698-7. %-
2100-0318). 5356A-1. All serials. Option 006 Microwave Limiter riak 2039A-01386 %ndW w (62sgS);seriats
o
Retrofit.
53WA MEASURING SYSTEM 53568-1, All serials. Option 006 Microwave Limiter
53OOA-6. Serials 194OA and below. Preferred re- Retrofit.
M o w (626963). Tunnel assembly insutrrti stan-
placement (HP P/N 2100-3891) for the power
switch/sample rate control (old HP P/N 5420A DIGITAL SIGNAL ANALYZER doffs- mliabmy change.
2100-0318). 5420A-0. All serials. Service note index. 68288,68SA, DC QOWER
5420A-4A. 54408 Plug-in Module Mainframe, serials
5 3 1 U HWB INTERFACE 1728 and below. 5441A display, serials 1652 and 6825A-2/ 2W8A-
5312A-4. All serials. O p e r a t i verification using the below. 5443A Keyboard/Controller, serials prefixed oogeo 750 and
HP 85A controller. 1655 and below. Modification to improve system
below; 682715. seria)S ZM7A-ClOB20 wid b l o w .
performance.
M&iftcatian to improve low fine OpetetiOn.
5316A UNIVERSAL COUNTER 5420A-7A. MlOB controller (05440-60035). Serials
below 1804. Modification to eliminate a race
5316A-2. Serials 1924A through 2052A. Modrfication 6942A MULnPROORAMMER
condition.
to prevent intermittent E l m s not caused by 6942A-4A. Serials below 2013AOO321. Modification to
5420A-9A. 5443A Keyboard/Controller. Serials 1636
microcomputer. prevent "cdd start" syndrome.
5316A-3A. All serials. HP-I8 verification program and below. Modification to improve performance.
542OA-11A. 54451A Display Unit, 5443A Keyboard/
using the HP 85A controller. 7044B X-Y RECORDER
Control Unit. Serials 1821 and below. Modifications
to improve performance. 704451. Serials 21298 and above. ImprovedX and Y
5328A UNIVERSAL COUNTER 5420A-14A. 544708 Digital Filter. All serials. Modifi- axis attenuator assemblies.
5328A-33. All serials. HP-IB verification program cation to improve self-test.
using the HP 85A controller. 5420A-156. 5420A Digital Signal Analyzer, all serials. 70458 X-Y RECORDER
544114 Display, all serials. 5443A Keyboard/ 704581. Serials 2129A and above. Improved X and Y
5328A/H99, 5328AF/W, 5328AF/098, Control, serials 185OAOO366 and below. 54410A axis attenuator assemblies.
5328Am42, C9&5328A MHz UNIVERSAL