Home

1987

1. CA iekaro 7a ga REF PLEA 5 A m ma AMALIE KEO VE BENCH DRIES PIGER Vic INFORMATION FROM HEWLETT PACKARD January March 1987 HP 5335A Universal Frequency Counter Anomalies and Workarounds Mara DuMond HP Santa Clara Division Service Note 5335A 21 documents the HP 5335A firmware Revision 1 1 programming anomalies and worka rounds You may find this informa tion useful if you are experiencing programming difficulties with the 5335A The following is a summary of the service note If you would like a copy of this service note please write to the address on the last page of Bench Briefs Introduction The purpose of this service note is to facilitate successful programming of the 5335A by informing the user of the programming anomalies and their workarounds for the 5335A firmware Revision 1 1 The anomalies and their workarounds which were verified for the HP 9000 Series 200 controllers are presented in the following categories a 5335A Data Output Format Totalize A Function Pulse B Function Gate Modes Single Cycle Mode SRQ Service Request Status Byte Serial Polling All anomalies and or workarounds do not affect the credibility of any measurements made by the 5335A Major Subjects References Which documents it supports Firmware Revision Identification Is your counter the one Anomalies and Workarounds In each case listed above there is an exp
2. 8770A 5 Serials 2626A00233 and below Improved line switch mounting 8770A 8 Serials 2627A and below Improved HP IB data cable HP 8770A ARBITRARY WAVEFORM SYNTHESIZER 8770A 9 S Serials 2627A00254 and below Potential line module short 8770A 10 Serials 2632A00290 and below Improved front panel display 8770A 11 Serials 2627A and below Sequencer as sembly part number change HP 8956A SYSTEM INTERFACE 8956A 3 Serials 2525A and below Procedure for replacing fuses AT2F1 and AT3F1 8956A 4 Serials 2525A and below Modification to improve LED life HP 8970A NOISE FIGURE METER 8970A 10 Serials 2633A and below Improved meas urement repeatability HP 11729B CARRIER NOISE TEST SET 11729B 4 All serials Improved residual phase noise performance test HP 37203A 37204A HP IB EXTENDER 37203A 11 All serials Change to on site repair policy 37204A 1A All serials Installation of fiber optic interfaces HP 44701A INTEGRATING VOLTMETER FOR 3852A 44701A 1A All units used with mainframe firmware revision 1 0 Modification to prevent lock up or missing reading when taking multiple readings per trigger with HP 44701A 44701A 2A All serials Procedure for eliminating in termittent error 27 HP 44702A B HIGH SPEED VOLTMETER FOR HP 3852A 44702A B 1 Serials 2545A00199 and below HP 44702A 2546A00119 and below HP 44702B Modification to improve low resistance measurements 44702A B 2 Serials 2545A00193 HP 4
3. Rubber bumpers which hold PC boards in the motherboard slots may be misplaced causing boards to come loose HP 64215A 6809 EMULATOR SUBSYSTEM 64215A 3 All repair numbers Characteristics of the emulator s non maskable interrupt signal HP 64216A 6809E EMULATOR POD 64216A 1 Emulation pod board serial prefix numbers 2332A and below No HALT ACKNOWLEDGE from emulator while in background 64216A 2 All repair numbers Characteristics of the emulator s non maskable interrupt signal HP 64228S 80286 EMULATOR POD 64228S 1 Pod repair number 2627A00150 and below Modification to improve write cycle timing HP 64286A F9450 EMULATOR 64286A 1 Serials 2524A and below Modification to correct data wait state tracking HP 69791A 69792A HIGH SPEED MEMORY CARDS 69791A 3 69792A 2 All serials Verification program corrections HP 70001A MAINFRAME 70001A 2 All serials HP 70001A mainframe to main frame cabinet interlock kit instructions 70001A 3 All serials Preferred replacement of rear frame assembly HP 70310A PRECISION FREQUENCY REFERENCE 70310A 1 Serials 2622A00149 and below Modification to ferrite bead A2L5 on the A2 power supply and processor board assembly HP P N 70310 60002 HP 70900A LOCAL OSCILLATOR MODULE 70900A 4A All serials New repair strategy for the controller board HP 85650A QUASI PEAK ADAPTER 85650A 3A All serials List of correct AC mains fuses 85650A 6 All serials 21 4 MHz crystal matching req
4. send your request to the A above address aU Reader comments or technical article tio For European customers ONLY Name Hewlett Packard Firm Central Mailing Dept Address P O Box 529 Van Hueven Goedhartlaan 121 City AMSTELVEEN 1134 Netherlands State Zip 3776B 35 O 3852X 2 O 5370B 2 O 8770A 5 O 64216A 2 3779A 13B O 3852xX 3 O 5501A 10A O 8770A 8 O 64228S 1 3779A 32B oO 3852X 4 O 5508A 2 8770A 9 S O 64286A 1 3779A 57 O 3852X 5 oO 5517A 18A 1A O 8770A 10 oO 69791A 3 69792A 2 3779A 58 4935A 12B O 8447E F 5 O 8770A 11 O 70001A 2 3779A 59 O 4936A 5A O 8477A 2 O 8956A 3 O 70001A 3 3779B 13B O 4936A 6 o 8481A 3A O 8956A 4 oO 70310A 1 3779B 18A O 4947A 1 O Q8486A 1 o 8970A 10 70900A 4A 3779B 33B O 4947A 2 oO 8557A 15 O 11729B 4 o 85650A 3A 3779B 62 O 4947A 3 O 8558B 34 oO 37203A 11 oO 85650A 6 3779B 63 O 4947A 4 O 8559A 30 O 37204A 1A O 85685A 1A 3779C 31 4951C 2 S 8566A 24 O 44701A 1A O 85685A 3 3779C 32 O 4953A 09 O 8566B 12 oO 44701A 2A O 85685A 7 3779C 33 O 4953A 10 O 8568A 47 oO 44702A B 1 3779D 36 O 5061A 19 O 8568B 12 O 44702A B 2 3779D 37 oO 5061A 20 O 8672A 10B O 44702A B 3 3779D 38 O 5061B 1 8672A 14 O 44702A B 4 3780A 31A O 5316A 4 O 8672A 17 oO 44702A B 5 O 3781B 10 O 5342A 49 O 8683D 1 44708A 1 3782B 11 O 5343A 26 O 8684A 4 O 44710A 1 3793B 8 O 5350B 1 O 8684B 4 44715A 1 3852A 0A O 5351B 1 O 8684D 1 O 51089A 1 3852A 1A S O 5352B 1 O 8770A 1A oO 54200A D 6 3852A 2 oO 5355A 3 oO 8770A 2 O 64215A 3 3852X 1 O 5359A 6 O 8770A 4
5. 2534400349 and below having firm ware revision 1 0 Modification to prevent lock up or missing a reading when taking multiple readings per trigger with HP 44701A 3852X 2 Serials 2434A00349 and below having firm ware revision 1 0 The correct way to redimension variables 3852X 3 Serials 2551400455 and below having firm ware 1 1 and below Proper way to prevent erroneous reference temperature when scanning multiple TC multiplexers 3852X 4 Serials 2602A00xxx and below having firm ware rev 1 2 and below Front panel display must be on when using ALRM ON ALRM commands to generate interrupts 3852X 5 Serials 2602A02091 and below Errors re solved and enhancements made in firmware revision 2 2 HP 4935A TRANSMISSION IMPAIRMENT MEASURING SET 4935A 12B Serials 2413A thru 2436A Modification to prevent fuse blowing HP 4936A TRANSMISSION IMPAIRMENT MEASURING SET 4936A 5A Serials 2326U01636 and below Recom mended replacement for rubber foot 4936A 6 All serials Preferred replacement fuses on battery charger assembly HP 4947A TRANSMISSION IMPAIRMENT MEASURING SET 4947A 1 Serials 2636U00196 and below Preferred replacement of PROM assembly HP P N 03773 80015 4947A 2 Serials 2627U00142 and below Additional supply pin for A D converter U65 A7 board 4947A 3 Serials 2627U00142 and below Firmware modification to rectify erroneous printout when performing EDD measurements slow sweep 4947A 4 All serials Prefe
6. Catalog Now Available The latest edition of HP s Coaxial and Waveguide Measurement Acces sories Catalog is now available with product and applications information on more than 400 products operating from dc to 110 GHz Seventeen product sections include attenuators detec tors couplers filters power sensors scalar analyzer accessories noise fig ure equipment and even 75 ohm accessories More than 27 pages of this 112 page Life Support for Your Home Computer Mainframe computers are swaddled in specialized computer rooms where heat humidity smoke dust and static electricity are eliminated or controlled Excess heat can lead to microprocessor burnout smoke and dust to garbled data and low humid ity and static electricity to loss of memory Personal computers are prey to the same ills but few people would buy 3 000 machines if they had to hermetically seal the family garage as a computer sanctum Fortunately PCs don t have to be treated that tenderly Still elementary caution is due Put the computer system away from open windows heat vents radiators and air conditioners This helps re duce dust smoke and other airborne particles as well as control variations in temperature and humidity A good rule of thumb if the room is uncom fortable for humans it will probably also discomfort computers 2 BENCH BRIEFS catalog are devoted to microwave measurement techniques and refer ence information
7. O 64216A 1 SRS a pS EE A i BL aT A FS EE IDE PE TAT Bulk Rate U S Postage PAID Sunnyvale CA Permit No 804 All rights reserved Permission to reprint Bench Briefs granted upon written request to the Editor Printed in U S A 8 BENCH BRIEFS WWW HPARCHIVE COM Please photocopy this ordet form if you do not want to cut off the page JANUARY MARCH 1987
8. all changes to your instruments Hewlett Packard offers a microfiche library for a one JANUARY MARCH 1987 time charge There is also a microfiche subscription service available that automatically updates the library on a quarterly schedule The part numbers for the service note microfiche library and subscrip tion service are 5951 6511 5951 6517 Library Subscription service Contact your local HP Sales Office for ordering information oO HP 436A POWER METER 436A 5A All serials Option 022 Retrofit instructions HP 816A COAXIAL SLOTTED LINE 816A 1 All serials Recommended new RF connector contact to improve return loss HP 2250 DATA ACQUISITION AND CONTROL UNIT 2250 29 ERC 2520 and below Modification to improve HP 25501 autoranging applications HP 3056DL DATA LOGGER SYSTEM 3056DL 1 Revision A System Software vs Revision B System Software 3056DL 2 All serials Instructions on using revision B software on an HP 85A and a description of the HP 85 I O ROM error HP 3061 62 BOARD TEST SYSTEM HP 3061A 3062A 17 Replacement procedure for the cam bar and handle of the scanner receiver mech anism in HP 3061 62 Board Test systems WWW HPARCHIVE COM HP 3065 BOARD TEST SYSTEM HP 3065 8A Preventive maintenance for fixture re ceiver mechanisms 3065 44 S Serials HP 3065HL 2541A002145 and below Notification of potential safety hazard HP 3235A E SWITCH TEST UNIT 3235A E 1 Serials 2628A00214 a
9. identification 3711A 7 All serials Mechanical parts identification 3711A 8 All serials Preferred replacement for A1CR1 A9CR1 and A9CR2 3711A 9 Serials 2620U00885 and below Directions for setting up the A9 580 MHz oscillator symmetry adjustment 3712A 15 All serials Mechanical parts identification HP 3746A scoot LEVEL MEASURING T 3746A 22 Serials 2508U00882 and below Modification to prevent possible serial poll hang ups HP 3754A 3756A 3757A ACCESS SWITCH 3754A 1 Serials 2512U01510 and below Modification to prevent incorrect switch selection after power up 3756A 1 Serials 2511U00666 and below Modification to prevent incorrect switch selection after power up 3757A 2 Serials 2127U00906 and below Modification to prevent incorrect switch selection after power up HP 3764A DIGITAL TRANSMISSION ANALYZER 3764A 19 Serials between 2615U01162 and 2712U01637 Retrofit kit to upgrade the auxiliary analog input 6 BENCH BRIEFS HP 3776A B PCM TERMINAL TEST SET 3776A 29 All serials Opt 001 units Preferred re placement of analog MUX U64 on A5 assembly with new part 1826 1617 3776A 30 All serials Preferred replacement of bit slice processor U306 U406 U506 and U606 on assembly 03776 60001 with new part 1820 4699 3776B 22B Serials 2437U00742 and below Modifi cation to improve measurement accuracies in Timeslot 24 3776B 30A Serials 2437U00642 and below Firmware update to correct echo return loss
10. summarizing com mon scalar techniques of attenuation and SWR as well as other measure ments in component and system test such as power frequency noise figure spectrum waveform carrier noise and modulation analysis Waveguide and Coax band designations and flange data are included in the ref erence section along with 9 pages of associated equipment descriptions This catalog will prove useful for design engineers production test per sonnel quality assurance and me trology engineers field test and system maintenance engineers It is available without charge publication number 5954 6401 from the HP lit erature distribution center at the Leave the computer on for the entire day even if it will be used only briefly a few times There are two reasons for this the first is the disc drive Each time you power the unit on and off the heads go through their homing or position seeking rou tines resulting in a certain amount of mechanical wear The fewer times you cycle the power the less wear The second reason is that continually heating up and cooling down circuits can widen undetected hairline frac tures in chips leading to the kinds of glitches that disappear at the repair shop but reappear when you re in the middle of creating text or program code Computers are designed to use little electricity so power bills from all day operation aren t high A good reason for keeping a brand new com puter on most elect
11. with moderate resources To keep a computer or instrument running efficiently in or beyond its expected life cycle there is no better way than an active preventive main tenance program The ability to detect minor flaws before they result in a major breakdown as well as the speed in which the equipment is repaired are crucial to any business and production intensive environ ment Time is money Hewlett Packard Customer Service Training has the right program to assist HP hardware owners who de sire self support and preventive maintenance Currently there are 21 computer hardware classes 57 self paced computer learning packages 22 self paced mentored courses and 20 instrument service classes avail able to self support customers Class room computer service instruction is provided at Mtn View CA Dallas TX Rockville MD and all instru ment classes are delivered at the respective product division For detailed information on classes that provide good solid service infor mation and techniques on CPUs discs printers PCs and instruments please contact Customer Service Training at 415 691 5300 5295 or 800 523 0696 in the Continental U S or 800 882 9595 within California E 1987 CUSTOMER SERVICE TRAINING CALENDAR Learn Service Skills Through In Depth Technical Instruction Hewlett Packard service training courses are designed to provide in depth technical instruction for main tenance person
12. 3779A opt 001 opt 002 or opt 003 3779C 31 All serials Conversion of standard 3779C to 3779C opt 001 opt 002 or opt 003 3779C 32 All serials Conversion of all models 3779C to 3779D opt 001 or opt 003 3779C 33 All serials Conversion of 3779C all models to 3779D opt 002 3779D 36 All serials Conversion of standard 3779D to 3779D opt 001 or opt 003 3779D 37 All serials Conversion of standard 3779D opt 001 and opt 003 to 3779C opt 001 opt 002 or opt 003 3779D 38 All serials Conversion of standard 3779D opt 001 or 003 to 3779D opt 002 HP 3780A PATTERN GENERATOR ERROR DETECTOR 3780A 31A Serials 2224U02486 to 2224U03100 and 2449U03101 to 2449U03165 Recommended IC replacement to improve performance of A37 sys tematic error detector and A38 error counter control logic board HP 3781B PATTERN GENERATOR 3781B 10 All serials B8ZS retrofit kit instructions HP 3782B ERROR DETECTOR 3782B 11 All serials B8ZS retrofit kit instructions HP 3793B DIFFERENTIAL PHASE DETECTOR 3793B 8 All serials Preferred repalcement A2 or A3 assemblies in conjunction with the 8 2 MHz high tone HP 3852A DATA ACQUISITION AND CONTROL UNIT 3852A 0A Service note index of the HP 3852A and associated modules WWW HPARCHIVE COM 3852A 1A S Clarification of maximum input voltage 3852A 2 Service manual April 1986 printing and earlier Error in front panel keyboard diagnostic test program 3852X 1 Serials
13. 4702A and below 2545A00116 HP 44702B and below Mod ification to correct overload readings when autoranging 44702A B 3 Serials 2545A00193 HP 44702A and below 2545A00115 HP 44702B and below Mod ification to correct false detection of overloads 44702A B 4 Serials 2545400193 HP 44702A and below 2545A00115 HP 44702B and below Mod ification to correct erroneous readings at elevated temperatures WWW HPARCHIVE COM 44702A B 5 Serials 2612A00464 HP 44702A and below 2612A00282 HP 44702B and below Mod ification to correct erroneous readings at elevated temperatures HP 44708A RELAY MUX TC FOR HP 3852A 44708A 1 Serials All modules used in a mainframe having firmware 1 1 or below Modification to prevent erroneous reference temperature when scanning multiple TC multiplexers HP 44710A FET MUX TC FOR HP 3852A 44710A 1 Serials All modules used in a mainframe having firmware 1 1 or below Modification to prevent erroneous reference temperature when scanning multiple TC multiplexers HP 44715A COUNTER TOTALIZER MODULE FOR THE HP 3852A 44715A 1 Serials 2551A00319 and below Modification to improve performance when taking frequency measurements HP 51089A DISPLAY UNIT 51089A 1 Serials 2510A00180 and below Modification to prevent ribbon cable from coming loose HP 54200A D DIGITIZING OSCILLOSCOPES 54200A D 6 54200A serials 2601A00975 appx to 2617A01069 54200D serials 2601A00619 appx to 2618A00637
14. change corrects display of zeros when signal is present 5352B 1 Serials 2627A00104 and below Firmware change corrects display of zeros when signal is present HP 5355A AUTOMATIC FREQUENCY CONVERTER 5355A 3 Serials 2644A and above Modification to prevent 5355A miscounts due to sidebands noise HP 5359A TIME SYNTHESIZER 5359A 6 All serials Modification to prevent HP IB lock up problem HP 5370B UNIVERSAL TIME INTERVAL COUNTER 5370B 2 All serials Modification to prevent HP IB lock up problem HP 5501A LASER HEAD 5501A 10A All serials Modification to improve the A5 lock reference board HP 5508A LASER MEASUREMENT DISPLAY 5508A 2 Serials 2628A and below EPROM firmware revision HP 5517A 18A LASER HEADS 5517A 18A 1A Serials 2532A and below Repair of sampler assembly to improve performance HP 8447E 8447F AMPLIFIER 0 1 1300 MHz 8447E F 5 8447E Serials 2631A and above 8447F Serials 2634A and above Preferred replacement power amplifier HP Part Number 5086 7006 HP 8477A CALIBRATOR 8477A 2 All serials Preferred replacement for transis tors A1Q11 and A1Q18 HP 8481A POWER SENSOR 8481A 3A All serials Cartridge replacement instructions HP Q8486A POWER SENSOR Q8486A 1 All serials Procedure for torquing the waveguide flange screws HP 8557A 58B 59A SPECTRUM ANALYZER 8557A 15 Serials 2106A and below Sweep trigger rotor replacement 8558B 34 Serials 2145 and below Correct replacement for
15. e 4951C 2 S describes a possible shock hazard that may exist on instruments with serial numbers 2631A00101 thru 2631A00243 Improper dressing of primary ac wires inside the unit may cause ac voltages to be applied to the printed circuit board assemblies In addition if this problem is not re solved circuit and equipment damage may occur For a complete description of the problem and instructions on how to fix it please order the service note with the order form on the last page of this issue of Bench Briefs HP 8770A Arbitrary Waveform Synthesizer A potential short circuit in the line module can occur in HP 8770As with serial numbers 2626A00254 and be low If this short circuit occurs dam age to the instrument can result For more information please order Prod uct Safety Service Note 8770A 9 S with the order form on the last page of this issue of Bench Briefs o SUOPIEMEN tO BENCH BR ifs UGE WOME M Vs Need Any Service Notes They re free Here s the latest listing of service notes They recommend modifications to Hewlett Packard instruments to increase reliability improve perform ance or extend their usefulness Use the form at the rear of Bench Briefs to order free of charge service notes for several instruments If you would like to purchase large quantities of service notes covering a wide range of instruments or if you desire a complete history of all service notes documenting
16. lanation of the anomaly and the suggested workaround In many cases there is an example program listing in BASIC for the HP 9000 Series 200 controller L Change is Contemplated in U S Unit of Voltage Bill Bruce HP Loveland Division In an effort to more closely align the U S legal unit of voltage with the SI international system of units NBS is contemplating an approximately 9 ppm change in our unit of voltage The ohm will also be adjusted about Pub No 5952 0127 1 5 ppm Some experiments are pres ently underway and a decision on what the actual changes will be is due late in 1988 The changes would then become effective January 1 1990 While this change will be insignifi cant to the majority of users of HP instruments it will affect the calibra tion of some HP products which can be dealt with Some of our customers in non electrical disciplines however may not be aware of the impact it will have on their operations If you know of or learn of an impact WWW HPARCHIVE COM on a non electrical field please com municate it to Bill Bruce at the Loveland Instrument Division Standards Lab Bill is on an NBS sponsored government industry com mittee that will formulate recom mendations for dealing with the changes Send inputs to Bill Bruce LID Standards Lab Hewlett Packard Company P O Box 301 Loveland CO 80539 El Hewlett Packard 1987 Coaxial Waveguide Measurement Accessories
17. measurement 3776B 32 Serials 2637U01202 to 2616U01152 Pre ferred replacement of PROM HP P N 03776 80111 3776B 33 Serials 2616U01152 and below Preferred replacement of PROM HP P N 03776 80103 3776B 34 All serials Opt 001 units Preferred re placement of analog MUX U64 on A5 assembly with new part 1826 1617 3776B 35 All serials Preferred replacement of bit slice processor U306 U406 U506 amp U606 on assembly 03776 60101 with new part 1820 4699 HP 3779A B C D PRIMARY MULTIPLEX ANALYZER 3779A 13B All serials Preferred replacement for relays A1K1 K6 A8K1 A9K1 K5 K7 K9 K10 A31K1 A37K1 K4 3779A 32B All serials List of HP 3779C D assemblies that are direct replacements in HP 3779A models 3779A 57 All serials Conversion of standard 3779A to 3779A opt 001 opt 002 or opt 003 3779A 58 All serials Conversion of 3779A all models to 3779B opt 001 or opt 003 3779A 59 All serials Conversion of 3779A all models to 3779B opt 002 3779B 13B All serials Preferred replacement for relays A1K1 K6 A8K1 A9K1 K5 K7 K9 K10 A31K1 A37K1 K4 3779B 18A All serials Conversion of standard 3779B opt 001 or opt 003 to 3779B opt 002 3779B 33B All serials List of HP 3779C D assemblies that are direct replacements in HP 3779A B models 3779B 62 All serials Conversion of standard 3779B to 3779B opt 001 or opt 003 3779B 63 All serials Conversion of standard 3779B opt 001 or opt 003 to
18. nd below Replace ment ROM improves FTEST function HP 3335A SYNTHESIZER LEVEL GENERATOR HP 3335A 12 Serials 2516A03880 and below Possible missing insulators on pass transistor assembly HP 3421A DATA ACQUISITION AND CONTROL UNIT 3421A 0 HP 3421A service note index 3421A 7 Serials 2338A03052 and below Motherboard ROM update 3421A 12 Serials 2338A02074 and below HP IB microprocessor on board ROM update to improve performance 3421A 15 Warranty date codes 09 2623 to 09 2644 Notification of possible defective terminal blocks on the HP 44462A eight channel multiplexer two channel actuator assembly HP 3455A DIGITAL VOLTMETER 3455A 20E All serials HP P N 03455 69801 on site service kit HP 3457A MULTIMETER 3457A 5 Warranty date codes 09 2623 through 09 2644 Notification of possible defective terminal connectors 3457A 6 New reed relays in the 44492A Reed Relay Multiplexer to improve performance HP 3465A MULTIMETER 3465A 8 Serials 1606A00900 and below Recom mended replacement for A1CR7 rectifier BENCH BRIEFS 5 HP 3488A SWITCH CONTROL UNIT 3488A 9 All serials Correction of CHAN CLOSED line test on the 44474A digital I O module Supersedes 3488A 8 dated 8 86 3488A 10 Warranty date codes 09 2623 through 09 2644 Notification of possible defective terminal connectors HP 3497A DATA ACQUISITION AND CONTROL UNIT 3497A 23B S Serials 2448A15955 and below Possible shock hazard near the inguard contr
19. nel seeking the skills needed to troubleshoot repair and maintain HP instruments and in strument systems Course concepts are taught through a balance of the ory and practical hands on exercises JANUARY MARCH 1987 Ordering Instrument Service Train ing is easy Simply contact your local HP Sales Representative and tell him or her which courses you wish to attend If you require a course on an instrument or instrument system not listed on the calendar below ask your Sales Representative if a special arrangement can be made For a copy WWW HPARCHIVE COM of the 1987 calendar ask for publica tion number 5953 9606 For more information call 415 691 5300 5295 g BENCH BRIEFS 3 Content Dates Location per Student Data Acquisition HP 2250 Maintenance 25599A Apr 20 24 Loveland Instrument Division 1400 Sep 21 24 Loveland Colorado Automatic Test HP 3061A 62A Board Test Systems Oct 20 28 Manufacturing Test Division 2500 Loveland Colorado HP 3065H Board Test Systems Apr 27 May 6 Manufacturing Test Division 3600 Loveland Colorado HP DTS 70 Board Test Systems Jul 27 31 Lexico Enterprise 1495 IV F Nov 16 20 10517 NE 38th Place Kirkland WA 98033 206 828 0555 Advanced DTS 70 Board Test May 18 22 Lexico Enterprise 1495 Systems Sep 28 Oct 2 10517 NE 38th Place Kirkland WA 98033 206 828 0555 HP ATS 1000 System Oct 5 9 Advanced Manufacturing 3100 Systems Organization Cupertino CA Signal Generati
20. ol section 3497A 25 Serials 2605A19100 and below Obsoles cence of front panel printed circuit board 3497A 26 Serials 2629419541 and below New power supply deck 3497A 27 Serial numbers 03497 66521 board rev B and below Recommended replacement counter ROMs HP P N 1818 1615 3497A 28 Serials 2629A19541 to 2629A19867 Mod ification to correct inoperative or intermittent RS 232 transmissions HP 3498A EXTENDER 3498A 3B S Serials 2223A04650 and below Possible shock hazard near the inguard control section 3498A 4A Serials 2026A00415 and below Old trans former no longer available replace with HP kit P N 03497 67916 HP 3552A TRANSMISSION TEST SET 3552A 10 All serials Preferred replacement for tran sistors A1Q706 710 Use new HP P N 1853 0281 HP 3562A DYNAMIC SIGNAL ANALYZER HP 3562A 3 Serials 2502A01478 2502A01474 2502A01467 and below New replacement capacitor for ADC HP 3577A NETWORK ANALYZER 3577A 9 Serials 2333A11610 and below Adding washer solves intermittent receiver board problems HP 3702B IF BB RECEIVER 3702B 53 All serials Mechanical parts identification HP 3708A NOISE AND INTERFERENCE TEST SET 3708A 12 Serials 2414U00250 and below Modification to prevent front panel display lock up HP 3709A CONSTELLATION DISPLAY 3709A 3 All serial numbers Performance and operation verification test 4 16 program error HP 3710A 11A 12A IF BB TRANSMITTER 3710A 24 All serials Mechanical parts
21. on HP 8642A B400 Oct 13 15 Spokane Division 675 Spokane WA HP 8640A B B438 Sep 24 25 Spokane Division 450 Spokane WA HP 8656A B B477 Sep 21 23 Spokane Division 675 Spokane WA HP 8901A 02A 03A B E B475 440 Oct 5 9 Spokane Division 1125 Spokane WA HP 8901A B8902A B475 Sep 14 17 Spokane Division 900 Spokane WA HP 8903A B E B440 Sep 10 11 Spokane Division 450 Spokane WA HP 8662A 8663A B501 Sep 29 Oct 1 Spokane Division 675 Spokane WA Tuition Safety Related Service Notes Service notes from HP relating to personal safety and possible equip ment damage are of vital importance to our customers To make you more aware of these important notes they are printed on paper with a red border and the service note number has a S suffix In order to make you immediately aware of any poten tial safety problems we are high lighting safety related service notes 4 BENCH BRIEFS here with a brief description of each problem Also in order to draw your attention to safety related service notes on the service note order form at the back of Bench Briefs each appropriate number is highlighted by being printed in color HP 3065HX and HL Board Test Systems A safety problem exists in HP 3065HL systems with serials below 2541A00145 The problem involves the two service outlets labeled For Field Service Only J211 and J212 WWW HPARCHIVE COM These outlets have 120V between neutral and gr
22. ound and if an instru ment designed with neutral and ground shorted together is plugged into one of these outlets the instru ment could draw 40 amps before the PDU circuit breaker opens This problem still exists even if the 2A fuse in the PDU is removed Hewlett Packard has developed a so lution for this problem Please contact your nearest HP office and order Product Safety Service Note 3065 44 S for more information JANUARY MARCH 1987 HP 3497A Data Acquisition and Control Unit Product Safety Service Note 3497A 23B S is a replacement service note for 3497A 23A S described in the January February 1986 issue of Bench Briefs HP 3498A Extender Product Safety Service Note 3498A 3B S is a replacement service note for 3498A 3A S described in the Jan uary February 1986 issue of Bench Briefs HP 3852A Data Acquisition and Control Unit Product Safety Service Note 3852A 1A S clarifies a user manual state ment of maximum input voltage The manual reads To extend relay life or apply voltage greater than 170V peak a voltage divider can be in stalled in the space provided for the filter Under no circumstances should more than 170V peak be input between any two terminals of the HP 44705A If more than 170V peak is input to the HP 44705A damage to the mod ule or injury to the user is possible Please order this service note for more information HP 4951C Protocol Analyzer Product Safety Servic
23. phone lines and electrical cords even when a computer system is turned off JANUARY MARCH 1987 You may live in an area where power drops or brownouts are common Or your house may be wired such that another appliance such as a food processor when turned on causes a mini brownout Of course these brownouts however caused will wipe out data stored in memory There are two ways to guard against data loss from brownouts The first is to buy a constant power generator which lifts the power flow to an acceptable level for 15 minutes Since these devices cost several hundred dollars you might consider making copies of all your valuable data always a good habit for any unforeseen event Since magnetism can distort or erase data don t put telephones stereo speakers tape recorders or other devices with motors or magnets next to the computer If all fails and the computer system does break down document precisely what happened It will help the re pairman figure out what went wrong and may reduce the likelihood that the gremlin will return iE Hardware Service Training Investing in Self Support Wei Huang HP Customer Training Businesses across the country are currently reassessing their financial and production strategies in view of the impending tax revision which will curtail the long cherished invest ment tax credit And one of their primary concerns is how to extend the useful life of existing equipment
24. ronic parts if they are going to fail will do so within the first ten hours of operation well within the typical 90 days cov ered by the warranty When you leave your computer on lower the intensity of the monitor so as not to burn an image onto the screen Don t smoke eat or drink around the computer system Smoke is espe cially insidious because tobacco tar WWW HPARCHIVE COM address on the rear page of this issue of Bench Briefs oO LO COAXIAL amp WAVEGUIDE Accessories Catalog Measurement can jam between the disc and disc head which reads and stores data thus leading to misreads Dust has the same vandalistic propensities so use a dust cover when the equipment isn t on Power surges static electricity and brownouts are also gremlins that can disrupt your equipment We recom mend that you contact local user groups to learn of particular area idiosyncrasies such as extremely low humidity resulting in high static electricity Place an antistatic mat on the floor to eliminate static elec tricity which can cause gaps in your data What if you live in an area where power surges are common To guard against too much electricity which can burn the system s insides buy a surge suppressor which can cost 50 to 100 These devices absorb most power surges that come from utilities or electrical storms During severe lightning storms however surges are so powerful they can burst through tele
25. rred replacement of analog MUX U64 on A5 assembly with new part 1826 1617 HP 4951C PROTOCOL ANALYZER 4951C 2 S Serials 2631A00101 thru 2631A00243 Possible shock hazard may exist on the PC board assemblies Supersedes 4951C 1 HP 4953A PROTOCOL ANALYZER 4953A 9 Serials 2522A00751 to 2605A01501 instru ments with locking handles New improved locking handle assembly is now available 4953A 10 Serials 2605A01360 to 2605A01489 shipped between June 1 and Aug 1 1986 Mod ification to improve the HP 4953A in Bit Character oriented protocol HP 5061A B CESIUM BEAM FREQUENCY STANDARD 5061A 19 All serials 5061A oscillator tuning shaft replacement kit installation instructions 5061A 20 Serials 2112 and higher Modifications to fix large frequency offsets in long time constant mode 5061B 1 Serials 2636 and below Modifications to fix large frequency offsets in long time constant mode HP 5316A UNIVERSAL COUNTER 5316A 4 All serials Modification to prevent HP IB lock up problem HP 5342A MICROWAVE FREQUENCY COUNTER 5342A 49 All serials Modification to prevent HP IB lock up problem HP 5343A MICROWAVE FREQUENCY COUNTER 5343A 26 All serials Modification to prevent HP IB lock up problem JANUARY MARCH 1987 HP 5350B 5351B 5352B MICROWAVE FREQUENCY COUNTER 5350B 1 Serials 2627A00153 and below Firmware change corrects display of zeros when signal is present 5351B 1 Serials 2627A00119 and below Firmware
26. the sweep trigger rotor 8559A 30 Serials 2208A and below Sweep trigger rotor replacement HP 8566A B SPECTRUM ANALYZERS 85662A IF DISPLAY SECTION 8566A 24 All serials Bandwidth filter assembly A4A4 A4A8 replacement kit 8566B 12 All serials Installation procedure for rebuilt A15 controller assembly HP 8568A B SPECTRUM ANALYZERS 85662A IF DISPLAY SECTION 8568A 47 All serials Bandwidth filter assembly A4A4 A4A8 replacement kit 8568B 12 All serials Installation procedure for rebuilt A15 controller assembly HP 8672A SYNTHESIZED SIGNAL GENERATOR 8672A 10B Serials 2640A and below Instructions for installing opt 008 retrofit for greater power output JANUARY MARCH 1987 8672A 14 All serials Instructions for installing new opt 008 amplifier retrofit 8672A 17 Serials 2640A and below Preferred power amplifier replacement HP 8683D SIGNAL GENERATOR 8683D 1 All serials Output RF assembly kit installation HP 8684A B SIGNAL GENERATOR 8684A 4 All serials Power supply adjustment procedure 8684B 4 All serials Power supply adjustment procedure HP 8684D SIGNAL GENERATOR 8684D 1 All serials Power supply adjustment procedure HP 8770A ARBITRARY WAVEFORM SYNTHESIZER 8770A 1A Serials 2540A00101 to 2540A00114 As sembly A18 English to metric conversion 8770A 2 Serials 2621A and below Front panel as sembly change 8770A 4 Serials 2540A and below Improved multi plexer assembly diagnostics
27. uirements HP 85685A RF PRESELECTOR 85685A 1A All serials Firmware revision for spectrum analyzer compatibility 85685A 3 All serials Instructions for a direct plotter dump with EMI receiver 85685A 7 All serials ROM replacement procedure BENCH BRIEFS 7 Service Note Order Form If you want service notes please check the appropriate boxes below and return this form separately to one of the following addresses Hewlett Packard 1820 Embarcadero Road Palo Alto California 94303 O 436A 5A 3498A 3B S O 816A 1 O 3498A 4A o O 2250 29 o 3552A 10 Oo oO 3056DL 1 O 3562A 3 m O 3056DL 2 O 3577A 9 o O 3061A 3062A 17 O 3702B 53 E O 3065A 8A O 3708A 12 o 3065 44 S O 3709A 3 o O 3235A E 1 O 3710A 24 O 3335A 12 O 3711A 7 m O 3421A 00 O 3711A 8 o O 3421A 07 O 3711A 9 o O 3421A 12 O 3712A 15 o O 3421A 15 O 3746A 22 Oo O 3455A 20E o 3754A 1 o oO 3457A 5 O 3756A 1 O O 3457A 6 O 3757A 2 o O 3465A 8 O 3764A 19 o O 3488A 09 O 3776A 29 O 3488A 10 O 3776A 30 3497A 23B S O 3776B 22B oO O 3497A 25 O 3776B 30A m O 3497A 26 O 3776B 32 O 3497A 27 O 3776B 33 o O 3497A 28 O 3776B 34 o HEWLETT PACKARD COMPANY 1820 Embarcadero Road a Palo Alto California 94303 _ BENCH BRIEFS _ JANUARY MARCH 1987 l Volume 27Number1 Service information cin Hewlett Packard Company To obtain a qualification form for a free subscription

1987

Contents

Download Pdf Manuals

Related Search

Related Contents