Keysight Agilent HP 8081A Datsheet
Contents
1. TERNURA PARS S Channel A ee UE EXPANDED 1ns div 3 13 The repetition rate of the output should be approximately 300 MHz 3 14 Turn the rate VERNIER 2 fully clockwise The repetition rate should be approximately 100 MHz 3 15 Repeat repetition rate checks for RATE ranges 100 10 MHz and 10 1 MHz at the CCW and CW positions of the rate VERNIER The repetition rates should be approximately as shown on the RATE range switch 3 16 Switch off the oscilloscope Replace the oscilloscope sampling plug in with real time dual channel vertical and timebase plug ins Reconnect the TRIGGER OUTPUT 8 to the channel A input and switch on the oscilloscope 3 17 Repeat repetition rate checks for RATE ranges 1 MHz 100 KHz 100 10 KHz 10 1 KHz 1 KHz 100 Hz and 100 10 Hz at the CCW CW positions of the rate VERNIER The repetition rates should be approximately as shown on the RATE range switch 3 18 Set 8081 mode switch 3 to TRIG press the MAN pushbutton 4 several times 3 19 Output should go high when button is pres sed and low when button is released 8080A MAINFRAME G B081A RATE GENERATOR 300 HEWLETT PACKARO RATE VERNIER 2 kHr Hri 300 100 10 100 10 1 100 0 P F Wetan OSCILLOSCOPE Mg WITH 1 GHz PERIOD 4 EXT INPUT LEVEL SAMPLING PLUG IN GATE NORM TRIG EXT2. POS Pulse Generator Switch pulse generator on Set pulse period to about 15 psec Set pulse width to about 8 usec Set pulse amplitude to 2V and polarity to POS Set the oscilloscope to trigger from chan nel B internally 3 30 The oscilloscope display should be as shown in figure 3 4 The 8081 output should only be delayed on the external input by the internal circuitry delay of the 8081A Figure 3 4 Rate Generator Output in Trigger Mode 3 31 Vary the EXT INPUT LEVEL switch 2 This gate signal can come from either an external source note that the trigger output disappears when the thre via the EXT INPUT connector 7 or locally using the shold level reaches approximately 0 2V Set the exter MAN pushbutton When the gate signal switches nal input level to 1V the first output pulse is always started at the beginning When the gate signal switches off the pulse is terminated 3 32 Set the NEG POS MAN switch to NEG immediately i e the last pulse may be cut short Set the pulse generator output polarity to negative 3 33 The oscilloscope display should be similar to 3 38 Set the Mode switch 3 to EXT GATE Set that shown in figure 3 4 except that the external input the oscilloscope timebase to 2 usec cm and trigger inter is a negative going pulse nally Press the MAN pushbutton and note that the rep rate generator runs at the selected rate for as
3. and repeat steps 3 and 4 observing the pulses The 8081A output should be gated on the negative half cycles of the oscillator output 4 11 MANUAL FUNCTION TEST SPECIFICATION All external functions can be triggered manually by pressing a pushbutton REAL TIME OSCILLOSCOPE 0 OHM TERMINATION 8081A 80804 MAINFRAME 77 7 Figure 4 5 Manual Function Test Setup EQUIPMENT Real Time Oscilloscope HP 182C Mainframe with 1804A and 18214 plug ins PROCEDURE 1 Set up the equipment as shown in figure 4 5 and set the controls as follows 8081A BATE Ranges 100 KHz 10KHz Hate VERNER CCW Operating Mode switch GATE EXT EXT INPUT LEVE aromen ter NEG POS MAN switch MAN Oscilloscope SENSU EY err RAO A ER GER DS 1V div vehemen vis internal Hiffiebase male sesser 10us div 2 Press MAN pushbutton As long as the Man button is pressed a pulse train should be visible uo un ANUAL 3 Set the Operating Mode switch to TRIG Press the MAN pushbutton As long as the MAN button is pressed the output should be OV MAN button pressed SESSEL iege 4 12 EXTERNAL TRIGGER FAST TEST SPECIFICATION Same as EXTERNAL TRIGGER SLOW para graph 4 9 DESCRIPTION A high frequency test of the Model 80814 external trigger mode using an external pulse generator to appl
4. DONDOO mOr A md mA x ANNO Ad ttt vuv n s e nn nine rrr m ammo bolus mmm 092300 SS eyme ate wA AA aoa NANNING pda lt Salal smo NNA won rtr vorer WU o 2ococ OD Dam AWA DAD xaaua NANNY aidaa No won Qo MF NOM ooo I1 m er wv Mus 00 MMOD OD 22 Ce NNN lt lt u OOOOQ Uo our penc TAR LES 32900 lube bend cocco OM ORD IONS 44444 mormo mer TTM conn 1101 x uev moro axax NNN lt t lt lt lt t Q S Sr AI c 18111 qr Orr uA AUA NATADO 20902 ace xx NNNNA OO 04 m mma oo cuo e MAMMA INS OD m D t t Nem AA 79977 NN NINN 4 rr x P 22u lt lt NNN N aoc a4 Ete aag a ENA Q gt gt rus x xea m m et O 22 x 44 4 Qipa 2 Soco x usu 1 OO bury 53 11 lt OO agaga ca V UG FO m amen Do Tran Q y o
5. Duty cycle Output impedance Transition time 10 to 90 Max external voltage OPERATING MODES Norm External trigger External gate Internal gate Manual OPTION 910 SIZE 10 Hz to 300 MHz in 8 ranges lt 0 1 50 psec 0 to 300 MHz pulse width 2 1 7 ns gate on duration gt 1 period of int rep rate gate off duration gt 1 period 10 ns 50 2 typical 1V to 1V 200 mV neg pos selectable 6V on gt 10 ns off gt 20 ns 50 typical z 500 mV p p OV 100 mV 1V gt 500 mV OV 100 mV 50 10 50 Q typical lt 1 2 ns t2V 1 gt 500 mV OV 100 mV 5096 1096 50 Q typical lt 1 2 ns 2V Repetition rate is determined by front panel controls Repetition rate is controlled externally Shaped input signal is output at both internal and external trigger outputs Gate signal turns repetition rate generator on synchronously External input is disconnected Generator is gated through internal gate input All external functions can be triggered manually by pressing a pushbutton Additional instrument operating and service manual Quarter mainframe width Far out max number of 8080 system modules which can be driven UPDATE A NOV 76 2 1 INTRODUCTION 2 2 This section provides installation instruc tions for the Model 8081 300 MHz Rate Generator module It also includes information about initial inspec tion and damage claims preparation fo
6. NANNAN Tato hers Fr MMMM O9000 Brom um 50 occuc pV QOcOOOC OO suyas PREPS AR Amide L nou or AMMA emo PANON OOOQUOO 3523232 COCINA Ny lt lt NNN NNN AY 244 44 quad 2 ee woo 111 coo Tow Ary 242 ANN 7 1 INTRODUCTION 7 2 This section contains the component layouts and schematic diagrams for the Model 8081A Rep Rate Generator Tables listing the reference designators and schematic symbols used are also given Refer to section 6 for the replaceable parts information 7 3 RECOMMENDED TEST EOUIPMENT 7 4 Test equipment and test equipment acces sories required to maintain the Model 80814 are listed in table 1 1 Equipment other than that listed can be used if it meets the listed critical specifications Table 7 1 Reference Designators assembly motor battery capacitor coupler diode delay line lamp fuse filter heater jack relay inductor meter U P R TP micro circuit switch transformer terminal board SECTION 7 SERVICE plug transistor resistor thermistor vacuum tube neon bulb photocell etc voltage regulator cable socket crystal test point Table 7 2 Schematic Diagram Symbols The following symbols conform as far as possible
7. o LET eu M Inr 0 7 lt gt ko um c2 2 116 a R123 ale 2 26 6 o TRIG E OUT R92 i J1 Riga SIDE 2 3 amp zz 15 DUTY CYCLE COMPONENT INT CIRCUIT U JO ECLOG OR WR S ABIUSI OUT SIDE F sag EMITTER BASE SERVICE SHEET 2 VERNIER P ed FRONT P EXTERNAL All INPUT J5 INTERNAL GATE INPUT ON WHEN INTERNAL GATE ee A2 300MHz RATE GENERATOR BOARD osos 58502 R25 7 11 BO A CONTROL BOARD asas RANGES RATE 100 v c2 cv 10 6 bp BEAD R32 160 clo 4 3 4 5 i 7 93 REP GENERATOR 15 D E 12 86 8 R88 89 1 51 st fst Cid 23 3 B6 cel RU MNK 383 535 3 s g21 uza gt 820 Sie t X as 20v 94 316K j LI Nh 06 1 82 5 1K u28 08 2 918 i 74 65 33p R77 T yos agu SOPK cag R24 00 CYCLE Jp 316 ADJUST 1 2 E 52v R8 C28 38 1 03 RAS ux 032 Ba m Wa 79 CR CR x31 10V 5 B I 10 H 32 1 10 7a BS 3 gt 974 10V 1 5 Sl 2 R2 R3 R K WK 8 7 6 IRE a FREQUENCY POM 20 n 51 20k LOW 20v 00 CURRENT ADJUST ADJUST c3 Je m ON WHEN
8. OY TIN Me m LO der mmm VO nO Comgoo OU j LLL 1 omw m SANAA O AYO oro rc oc CD m Seo ne mnang Me o IS me tainty eI e o xag 22222 gt gt Ny AEWA 498444 4 aadqaa aq Qua ao a T _ VLVOV o mmm 222 2 2 gt namn A amp ao ZZZ Z So a ZZ2ZZZ z 2 asqa Monn N 1 Keer Ki Heime ERR RR MANAN INNAN QAQ KAKAK lt MARKE x 540 9 Dninin MIS DIA VACA m n DONNA oooco TLELI meme merger wA WAAL T5920 OM Cnm HANNAN NANNAN 73202 NNNNA lt dada Alaaa lt lt lt lt MUDAU NOOD wwe ANNONS WHOSE uv Dp NO Oo monem NANN 111 45050 85225 030900040 OWOVH 049200 A Ses 7023000 ANT OR ORS AM ANNANN NNNNA mem QOOOO OY OLY NNNNN Neuen NANNAN 444 4 aaqad 0 C c 1854 0345 3 3 3 35 2 WIRE 22GA w PVC Porn pn PE 2146 Occo SSS 8153 0605 ANO xx xx al ANNs aaqa 2 4 K R F 5 11K1Z 0757 C458 1 2 3 4 5 6 1 8 9 1 R11 OLOR wee LLALA Gr nM xx dx ux MONT
9. nected to an output amplifier the output amplifier duty cycle must be checked and if necessary adjusted 5 18 DUTY CYCLE AND FREQUENCY ADJUSTMENTS DESCRIPTION These adjustments set up the correct duty cycle at high and low frequencies and calibrate the frequency output An oscilloscope is used to check the duty cycle and a counter to check the frequency SAMPLING OSCILLOSCOPE 808tA 8080 MAINFRAME Figure 5 1 Duty Cycle Adjustment Test Setup EQUIPMENT Sampling Oscilloscope HP 182C Mainframe with 1810A Sampling plug in 5345 PROCEDURE 1 Set up the equipment as shown in figure 5 1 and set the controls as follows 8081 RATE Tange ca UE 300 100MHz Fate VMERINIER S S ot e ERIT RE Clockwise Operating Made estere or cett er ee NORM Oscilloscope SSS RR ETE ERU TT TUE CE 200mV div Trigger iue cios internal Timebase mode vu mm RES expanded Timebase direct 20ns div expanded 1ns div 2 Adjust 2 16 for a duty cycle of 5096 10 96 e ton lott period t Duty Cycle x 100 period Frequency adjust Duty Cycle 307M 9M 100M 10M 300M 100M 08081 66502 BOARD A2 8081A 9080 MAINFRAME COUNTER Figure 5 2 Frequency Adjustment Test Setup 3 Setup the equipment as shown in figure 5 2 s
10. Be ANANS gt Z lt YW um uo m WW lt qaqaq lt an A YN Waa Nett ml X man x lt T O GO ns om 1 178 71 acc ox DATAN nomm NNT MOGO mer Tuna Tf NVA 44444 m2 0 SO noo rsru ur adad moona NANM NANNY BARNS ramp mm ro Dm FORAY ooo mome amoto vata SSN 4 lt 4 wu cocco u C X c ac NNNNA 44444 ADDR cs m QO Om orant ELTLE 0005029 VYUO WU uo KO 4000 099090 BOGUT Nets ey mme MNOS S Atra NANNAN YANNAN 44 AATA INSTEJMENT SERIAL PREFIX MUDEL 5CUlA DESCRIPTION H P PART NUFBER BD AY RATE DESCRIPTICN 8 81 68502 2 E N PAR de Se qu TNO 30700 peta m MOD me BROSO 3 2 a x xr NAINA lt lt lt lt lt aout fO ANNANN r r NATA D river Q xou p dod da x of 22 22 NN NN lt lt TUAN NNW PONN Ores Dra AUD 00 00 22620 x x x NNN 44944 uu mru uu 1 a 2 PAD re lend arto Cem oD i Qu
11. COMPONENT SIDE 20V 10 5 2 10V GND CIRCUIT SIDE NOT USED MM 9 MM y FH T Oat TON Pom Pom ee 1 DISTRIBUTION BOARD 081 66503 AN D NOT USED ENS 00v 34 gt 5 2 4 10 5 8 GND 6 c JH RATE GENERATOR 4 BOARD A2 A3 DISTRIBUTION BOARD
12. INT Hast 7 J NEG POS MAN pw 6 amp EXT INPUT TRIGGER OUTPUTI 16V 17 N 50 OHM COAXIAL CABLE Figure 3 2 Test Set for Operator s Checks BORIA RATE GENERATOR 300HHz HEWLETT PACKARD RATE VERNIER MHz ipe 300 100 10 1 100 10 100 10 E X c o We Wo M 312 159 1 1 30 lt 100 PERIOD EXT INPUT LEVEL NORM TRIG ae d 3 E V NEG POS 5 I owes EXT INPUT TRIGGER OUTPUT OSCILLOSCOPE 16V MAX 50 OHM COAXIAL CABLES Figure 3 3 Suggested Equipment Setup for Operating Instructions 3 20 Set 8081A mode switch 3 to EXT GATE and press the MAN pushbutton The repetition rate should start when the button is pressed and stop when the button is released When the button is pressed 1 e when the gate opens the first pulse should always start at the beginning However when the button is released 1 e the gate closes the last pulse may be cut short 3 21 OPERATING INSTRUCTIONS 3 22 A suggested equipment setup for the Operat ing Instructions is shown in figure 3 3 The 8081A Rate Generator must be mounted in an 8080A Mainframe The following procedure is designed to give a full understanding of the function of each of the 8081A operating modes 3 23 Set the LINE switch on the 8080A Main frame to ON 3 2
13. Schematic Diagram Symbols 7 2 ILLUSTRATIONS Page 8081A 300 MHz Rate Generator Module and Supplied Accessories 1 0 Serial Number Plate 1 1 8081A Controls and Connectors 3 0 Test Set for Operator s Checks 3 2 Suggested Equipment Setup for Operating Instructions 3 2 Rate Generator Output in Trigger Mode lt z r uay EI Y 3 3 Rate Generator Output External Gate Mode ive shua 3 4 List of lllustrations Schematic Diagrams ILLUSTRATIONS Figure 4 1 Repetition Rate Test Setup 4 2 Trigger Output Test Setup 4 3 External Trigger Mode Slow Test SLID v wing eh sone 4 4 External Gate Mode Slow Test Setup 4 5 Manual Function Test Setup 4 6 External Trigger Mode Fast Test eG male aped 4 7 External Gate Mode Fast Test Setup 5 1 Duty Cycle Adjustment Test Setup 5 2 Frequency Adjustment Test Setup 6 1 8081A Replaceable Parts SCHEMATIC DIAGRAMS Diagram 1 Control Board A1 2 300 MHz Rate Generator Board A2 3 Distribution Board A3 CABLE 8081A Figure 1 1 8081A 300 MHz Rate Generator Module and Supplied Accessories 1 1 INTRODUCTION 1 2 This Operating and Service manual contains information required to install operate test adjust and service the Hewlett Packard Model 8081A 300 MHz Rate Generato
14. The circle contains the signal number and the square contains the number of the schematic to which that signal goes Signal number exer dr V These references on a signal entering q schematic diagram indicate the signal crigin The circle contains the signal number and the square contains ihe number of the schematic on which that signal originates FRONT PANEL INSIDE 08081 66501 CONTROL BOARD SERVICE SHEET 1 P O 2 RATE s GENERATOR BOARD 08081 66502 laa GND 10V 2 RATE i GENERATOR BOARD PIN Mi fi 2 08081 66502 9 9 9 2 9 9 _ lenja 9 ho n 2 ha hs O gt O FRONT PANEL EXT INPUT SK LEVEL 10V 52 NORM TRIG EXT INT MAN PUSHBUTTON GATE 10V 51 Q NEG POS MAN 1 i At CONTROL BOARD osos s6501 1 CONTROL BOARD 1 7 10 08081 66502 300MHz RATE GENERATOR BOARD A2 R R8 8 xs iade 2594 59 FREQUENCY zu CLE R26 a C6 a R43 R39 a s wi JUMPER S ez a n o s 3 t 4 R77 ERZE R20 5 2 M a ME S 3 deut PE E 260 0 x rel INT trac f T a d usan R5 BB pn a ells R38
15. be charged even if the instrument has been disconnected from its source of supply SECTION 5 ADJUSTMENTS 5 7 sure that only fuses with the required rated current and of the specified type normal blow time delay etc are used for replacement The use of repaired fuses and the short circuiting of fuseholders must be avoided 5 8 Whenever it is likely that the protection has been impaired the instrument must be made inoperative and be secured against any unintended operation 5 9 TEST EQUIPMENT REQUIRED 5 10 Table 1 1 contains list of test equipment and test accessories required in the adjustment proce dures In addition the tables contain the required mini mum specifications and a suggested manufacturer s model number 5 11 ALIGNMENT TOOL 5 12 A non metallic alignment tool must be used when making any adjustments to the Model 8081 A 5 13 PERFORMANCE CHECKS 5 14 After making the adjustments carry out the Performance Checks in Section 4 5 15 RELATED ADJUSTMENTS 5 16 The following adjustments must be per formed in the order indicated in the procedures The adjustments can not be performed individually because of interaction 5 17 After making the adjustments the following related adjustments should be checked f the Model 8081 output is connected to a word generator the word generator trigger level must be checked and if necessary adjusted If the Model 8081 output is con
16. equipment as shown in figure 4 3 set the controls as follows 8081A RATE range wasa panasqa 100KHz 10KHz VERNIET 256 tede ree tori E Ses CCW Operating Mode switch TRIG EXIT INPUT LEVEL xx sians tawa center NEG POS MAN switch POS Oscilloscope Sensitivity both channels 1 V div JEDE T uro recens creer reto ettet ie sitters gaa external Tirmebase malheur 20us div Oscillator ur ea eina PRICE een 10KHz AMPUI zou cu tema EE E ER a maps 1VRMs 2 Display oscillator output and Model 8081 output on screen 3 Check that during the positive slope of the oscilla tor output a positive pulse output occurs Threshold level OSCILLATOR OUTPUT 4 Propagation delay 8081A Ov OUTPUT ES er 4 Turn EXT INPUT LEVEL control from positive to negative and observe waveforms OSCILLATOR OUTPUT 8081A OUTPUT Threshold lever gt 1V 5 Set NEG POS MAN switch to NEG and repeat steps 3 and 4 observing the pulses The Model 8081 A output should trigger on the negative half cycles of the oscillator output 4 10 EXTERNAL GATE MODE SLOW TEST SPECIFICATION Gate signal turns rep rate generator on synchronously DESCRIPTION The function of the Model 8081 is tested in external gate mode using an external sinewave generator to apply a gate signal of 10KHz REAL T
17. long as the button is held down 3 34 Vary the EXT INPUT LEVEL switch and note that the trigger output disappears when the thre shold level reaches approximately 0 2V 2 3 39 Set the NEG POS MAN switch to POS and the EXT INPUT LEVEL control to 1V Vary 3 35 As mentioned previously the pulse output the rate VERNIER 2 Note that the last pulse may be in trigger mode can also be produced using the MAN cut short by the gate turning off see figure 3 5 pushbutton First set the NEG POS MAN switch 5 to MAN This transfers the trigger input from the EXT INPUT connector 7 to the MAN pushbutton 6 Set the oscilloscope timebase to about 0 2 sec cm and trig 3 40 Interna Gate Mode ger internally Press the MAN pushbutton and note that the pulse output goes high when the button is pres sed and low when it is released The EXT INPUT 3 44 internal Gate mode can only be used if an LEVEL control has no effect in this mode 8084A 300 MHz Word Generator module is available In this mode of operation the gate pulse for the rate genera 3 36 External Gate Mode tor comes from the word generator via an internal con nection This gate enables the rate generator output in the same way as an external gate The purpose of this 3 37 In External Gate mode the repetition rate mode is to enable an exact number of data bits to be generator output is enabled disabled by a gate signal gated out of the word gen
18. with ANSI Y32 2 IEEE No 315 and ANSI Y32 14 for the logic symbols T hese standards shouid be consulted when further information is required Resistance values are in ohms capacitance values in microfarads and inductance values microhenries unless otherwise noted Part of Asterisk denotes a factory selected value The value shown is the nominal value Encloses front panel nomenclature Encloses rear panel nomenclature Heavy line indicates signal path Heavy dashed line indicates primary feedback path 947 Wire colour code Same as resistor colour code First number is wire body colour Wire our plug used as link Test point circuit Point may may not be identi fied on P C board Used with trimmer potentiometers or capacitors to indicate screwdriver adjustment Direct connection to earth Ground connection to instrument chassis or frame Used when a number of commorrreturn connections are at the same potential If there is more than one such system in the same circuit numbers are written in the triangles so that all connections with the same potential have the same number xV Specific potential difference with respect to a poten tial reference level eg 10V Normally open toggle switch Circles O used for the contacts to indicate a locking type switch type switch 2 position 2 pole slide switch Air cored inductor Iron core Ferrit
19. 100 300MHz 125 02 10 R61 020 RES an 3 16K 7 ds 022 62 53 R R67 992 R 5 15 amp CRS CRS EE nes R7 REE cie kss gu 023 56 Ton R58 R70 0 909 3 1 R72 R73 10V 150 150 0L Rue R97 R R75 R36 62 3 9 152 14 en 123 50 10n ix I 5 2V C26 l0n net CONTROL R8 SMK ND 5 1K 09081 8850 MAN 52 5 2 PBTN 23 10 1 1K x 1 X3 Lc JON WHEN R105 R60 OFF WHEN 3 01 INTERNAL TERNAL 909 025 R99 1 47 a29 R106 028 T 027 WHEN MANUAL S 2v Ri03 215 10 82 365 P O Al CONTROL BOARD 108081 66501 1080 1 665011 A1 CONTROL BOARD R104 oe 169K 10 4 210v in R103 OP ItMUM 15 035 100 GASING RIGOER ADIUST R1 our 95 R110 5 11 LU 5 82 52V R126 51 2 INTERNA s amp RIS CRIC H Tp 3 13 s RYS CRH 6 13 RI27 g 2 EM 7 ni 8 L 12 us 0 ey INT GATE RIG GATE 52 P O A3 DISTRIBUTION BOARD ssson__ 300MHz RATE GENERATOR BOARD 2 SERVICE SHEET 3 MAINFRAME MOTHERBOARD POWER SUPPLY amp PGM CONNECTIONS GND
20. 4 Initial Control Settings 8081A RATE range switch 1 MHz 100 KHz 2 Rate VERNIER CCW Mode switch NORM EXT INPUT LEVEL 22255 26 ER 1V B NEG POS MAN switch POS Oscilloscope JAG v civ aban bay sega bibs Roe ae ae 2 usec div Trigger scilksaseetarxrk cass Channel A internal Pulse Generator switched off 3 25 The 80814 has four different operating modes Normal NORM Trigger TRIG External Gate EXT GATE Internal Gate INT GATE EXTERNAL INPUT ov p GENERATOR OUTPUT I el fixed delay 3 26 Normal Mode 3 27 In Normai mode the repetition rate genera tor is free running at the frequency set on the rate con trols The pulse output is the same as on the oscilloscope the trigger output is identical to the pulse output The pulse duty cycle is 40 60 3 28 Trigger Mode 3 29 In TRIGGER mode the repetition rate of the output is independent of the internal repetition rate generator The output is in fact a pulse shaped version of the input signal The input can be either external via the EXT INPUT or local using the MAN pushbut ton For external triggering an external signal source is required The test set is as shown in figure 3 3 The changes in control settings are as follows 80814 CD Mode switcli aziswaenussarueuky sew n TRIG 8 NEG POS MAN
21. 80A mainframe top cover 4 Insert the 8081A in the required posi tion in the 8080A mainframe there are no electrical limitations on the position 5 Secure the 8081A to the 8080A main frame using the two screws provided 6 Connect the internal coaxial cable from the 8081A to the word generator delay output amplifier modules or to remote equipment as required Connections are Internal Output and Interna Gate A con necting cable for the Internal Output is supplied 7 Replace the 8080A mainframe top cover 8 Replace the two feet on the rear of the 8080A mainframe Operating Environment The 8081A will operate within specifications when the ambient temperature is between and 55 C 2 10 2 11 Storage and Shipment The 80814 can be stored or shipped at tem peratures between 409C and 759C The instrument should be protected from temperature extremes which cause con densation within the instrument 2 12 If the instrument is to be shipped to 3 Use enough shock absorbing material 3 E Hewlett Packard Sales Service Office attach a tag show to 4 inch layer around all sides of instru ing owner return address model number and full serial ment to provide firm cushion and prevent number and the type of service required The original movement inside container Protect contro shipping carton and packaging material may be re usable panel with cardboard but the Hewlett Packard Sales Servic
22. About this Manual We ve added this manual to the Agilent website in an effort to help you support your product This manual is the best copy we could find it may be incomplete or contain dated information If we find a more recent copy in the future we will add it to the Agilent website Support for Your Product Agilent no longer sells this product Our service centers may be able to perform calibration and repair if necessary but no other support from Agilent is available You will find any other available product information on the Agilent Test amp Measurement website www tm agilent com HP References in this Manual This manual may contain references to HP or Hewlett Packard Please note that Hewlett Packard s former test and measurement semiconductor products and chemical analysis businesses are now part of Agilent Technologies We have made no chanoes to this manual copy In other documentation to reduce potential confusion the only change to product numbers and names has been in the company name prefix where a product number name was HP XXXX the current name number is now Agilent XXXX For example model number HP8648A is now model number Agilent 8648A HEWLETT PACKARD OPERATING AND SERVICE MANUAL 300 MHz RATE GENERATOR MODULE 8081A PART OF THE 8080 HIGH FREQUENCY PULSE GENERATOR SYSTEM SERIAL NUMBERS This manua applies directly to instrument serial number 1604G 00101 For instruments with lower s
23. IME OSCILLOSCOPE 0 OHM TERMINATION B081A BOBDA MAINFRAME 50 OHM TEE Figure 4 4 External Gate Mode Slow Test Setup EQUIPMENT Oscillator uu ee as cau eons aoe ees HP 651B Real Time Oscilloscope HP 182C Mainframe with 1804A and 1821A plug ins 50 Ohm Feedthru Termination HP 10100C PROCEDURE 1 Set the equipment as shown figure 4 4 set the controls as follows 8081A RATE range s sas sa 100KHz 10KHz Rate serra CCW Operating Mode switch GATE EXT EXT INPUT LEVEL center NEG POS MAN switch POS Oscilloscope Sensitivity both channels 1V div Trigger xav WE eee eR EE CS external Tes MAM 20us div Oscillator Erequenoy cov ins 10KHz Te nM o Uo T aP Pa 1VRMs 2 Display oscillator output 8081A output screen 3 Check that during the positive slope of the oscilla tor output a pulse burst appears Threshold level OSCILLATOR OFT BIDS cisci l of 1 2 period 0V 8081A OUTPUT 4 Turn EXT INPUT LEVEL control from positive to negative and observe the waveforrns OSCILLATOR OUTPUT 8081A OUTPUT Threshold ievel gt 1V Note that the ast pulse will be cut off as soon as the gate closes 5 Set the NEG POS MAN switch to
24. Introduction 4 4 4 3 Equipment Required 4 1 4 5 akut p x Y 4 1 4 7 Repetition Rate Test 4 1 4 8 Trigger Output Test 4 2 4 9 External Trigger Mode Slow Test 4 2 4 10 External Gate Mode Slow 4 3 4 11 Manual Function Test 4 4 4 12 External Trigger Mode Fast Test 4 5 4 13 External Gate Mode Fast Test 4 5 Section 5 5 1 5 3 5 9 5 11 5 13 5 15 5 18 6 List of Contents Tables lllustrations Adjustments 5 1 lntroductioH osadu l U mms 5 1 Safety Considerations 5 1 Test Equipment Required 5 1 Alignment 0 5 1 Performance Checks 5 1 Related Adjustments 5 1 Duty Cycle and Frequency Adjustments 5 2 Replaceable Parts 6 1 iNtPORUGHION 6 1 Abbreviations kia 6 1 Replaceable 6 1 Ordering Information 6 1 Service 7 1 litfGdUuCHOH 20 need RET ES 7 1 Recommended Test Equipment 7 1 TABLES Page Recommended Test Equipment 1 2 Specifications 1 3 Performance Test Record 4 7 Abbreviations for Replaceable Parts EBE iue gah II RU 6 2 Replaceable 6 5 Reference Designators 7 1
25. MHz 100MHz Rate VERNIERO suu ae recs Operating Mode switch NORM NEG POS MAN switch POS Oscilloscope Sensitivity es sexo a norte S Re yma 200mV div Ti lgget iso internal Titnebase mode den sieas erse eiia mha E expanded Timebase direct 20ns div Timebase expanded 2ns div 2 Set Frequency to 100MHz on screen using Rate VERNIER 3 Measure Amplitude Baseline and Duty Cycle Masini Baseline Amplitude ER on es ch Amplitude should be 6V 50mV Baseline should be ra ul vs erus 0V 50mV Duty Cycle should be 50 96 10 ton Duty cycle x 100 period 4 9 EXTERNAL TRIGGER MODE SLOW TEST SPECIFICATION The repetition rate output is controlled externally The trigger and internal outputs are pulse shaped versions of the trigger input DESCRIPTION The function of the Model 8081A is tested in external trigger mode using an external sinewave generator to apply a trigger signal of 10K Hz REAL TIME OSCILLOSCOPE 50 OHM TERMINATION OSCILLATOR BOSTA 8080A MAINFRAME 50 OHM TEE Figure 4 3 External Trigger Mode Slow Test Setup EQUIPMENT Oscillator cx use e one ete re dete SIS HP 651B Real Time Oscilloscope HP 182C Mainframe with 1804A and 1821A plug ins 50 Ohm Feedthru Termination HP 10100C PROCEDURE 1 Set the
26. T LEVEL approx 0 5V Oscilloscope same settings as for previous adjust ment step 7 Check the duty cycle of the first pulse on the dis play necessary readjust R109 slightly to set the duty cycle to ikiwa kuwa wa a qk aw Wao SRS 50 10 6 1 INTRODUCTION 6 2 This section contains information for order ing parts Table 6 1 lists abbreviations used in the parts lists and elsewhere in the manual Table 6 2 lists al replaceable parts in reference designator order Table 6 3 contains the names and addresses that corre spond to the manufacturer code numbers 6 3 ABBREVIATIONS 6 4 Table 6 1 lists abbreviations used in the parts lists schematics and elsewhere in the manual in some cases two forms of the abbreviation are used one all in capital letters and one partial or no capitals This occurs because the abbreviations in the parts lists are always all capitals However in the schematics and other parts of the manual the same abbreviations may have upper and lower case letters 6 5 REPLACEABLE PARTS 6 6 Table 6 2 is the list of replaceable parts and is organised as follows a lllustrated parts breakdowns for chassis mounted parts b Chassis mounted parts in alphanumerical order by reference designator c Electrical assemblies and their compo nents in alphanumerica order by reference designator SECTION 6 REPLACEABLE PARTS 6 7 The information given for each p
27. art consists of the following a The Hewlett Packard part number b The total quantity Oty in the instru ment This is given only once for each part at the first appearance of the part in the list c The description of the part d A typical manufacturer of the part in a five digit code e The manufacturers code number for the part 6 8 ORDERING INFORMATION 6 9 To order a part listed in the replaceable parts table quote the Hewlett Packard part number indicate the quantity required and address the order to the nearest Hewlett Packard office list of Sales Service offices at the rear of the 8080A Mainframe manual 6 10 To order a part that is not listed in the re placeable parts table include the instrument model num ber instrument serial number the description and function of the part and the number of parts required Address the order to the nearest Hewlett Packard office Figure 6 1 8081A Replaceabie Parts FRONT PANEL MP5 MP7 154 A1S3 151 SCREENING MER TEE ADHESIVE BOTH SIDES 1 2 P OW1 P OW2 A2 A2 J4 LOWER J5 UPPER FRONT PANEL INSIDE ee o e e te 1 AIR e le 41 152 08081 66501 Uem ced CONTROL BOARD MP1 MP8 MP 10 Table 6 2 Replaceable Parts INSTRUMENT SERIAL PREFIX DE SCRIPTION MODEL 9031 FRAME Jd a gt zo
28. d in external gate mode using an external pulse generator to apply a gate signal of 150MHz SAMPLING OSCILLOSCOPE Pulse Generator Figure 4 7 External Gate Mode Fast Test Setup EQUIPMENT Pulse Generatori ime maia iE sate lene EAE HP 8082A Sampling Oscilloscope HP 182 with 1810A plug in PROCEDURE 1 Set up the equipment as shown figure 4 7 set up the controls as follows Pulse Generator Repetition rate 150MHz Pulse width cascade square wave Amplitude auus Ce mm be paves m poem u 0 2 V dci acid ae ws ea oun positive 8081A RATE fanges erorar re xn 300MHz 100MHz Rate VERNIER zia sa eR e ne CCW Operating Mode switch GATE EXT EXT INPUT EVEL iium emn center NEG POS MAN switch POS Oscilloscope uuo cereo dux READER CR 200mV div Udo aw DEI external Timebase mode expanded Timebase direct 20ns div Timebase expanded 5ns div Adjust the EXT INPUT LEVEL control for a stable 150 MHz pulse presentation on the display Observe that each external gate pulse releases two 8081A pulses Table 4 1 Performance Test Record Hewlett Packard Tested by Model 8081A Date 300MHz Repetition Rate Generator Serial No Repetition Rate 10Hz to 300MHz Trigger Output Trigger Output Pulse 6V 50m V to OV 50
29. e core Ferrite bead Varactor diode Multi junction diode Diode Zener diode Schottky diode Light Emitting Diode LED Photodiode Fuse Neon Filament lamp Spring return 2 position transfer switch Triangles 4 are used for the contacts to indicate a non locking Air cored transformer The dot is used when necessary to indicate instantaneous polarity 7 4 Terminals and Connectors Soldered connection Example of fixed male and female connectors with plug and socket and contact designators eg P C board edge connector and socket example of bulkhead mounted coaxial socket with free coaxial plug and cable 1 example of coaxial cable with termination soldered to 1 P C board Analog Digital logic symbols 3 2 2 input gate 4 input NOR gate Inverter Flip flop The dynamic indicator denotes that this is a dynamic input and operates on a transition not a level Complex functions represented by rectangular box Letters can be used inside the rectangle to clarify the function A truth table should be included as close as possible to the circuit Schmitt trigger Wired AND connection Wired OR connection Operational amplifier Voltage source Current source 7 6 Signal Schematic number number S ON 6 These references on a signal leaving a schematic diagram indicate the signal destination
30. e instrument The last five digits are assigned to instruments sequentially The con tents of this manual apply directly to the instrument ser al number quoted on the title page For instruments with lower serial numbers refer to the backdating infor mation in Section 8 of this module manual For instru ments with higher serial numbers refer to the Manual Change sheets at the end of this module manual In addi tion to change information the Manual Change sheets may contain information for correcting errors in the manual To keep this manua as up to date and accurate as possible Hewlett Packard recommends that you periodically request the latest Manual Change supple ment The supplement for this manual is identified with this manual s print date and part number both of which appear on this module manual s title page Complimen tary copies of the supplement are available from Hewlett Packard HEWLETT PACKARD GmbH 1536600062 BOBLINGEN Figure 1 1 Serial Number Plate 1 11 DESCRIPTION 1 12 The Model 8081A is a 0 300 MHz Rate Generator module designed to provide a clock source for another 8080 system module The 8081A has four operating modes Normal Trigger External Gate Internal Gate In Normal mode the rate generator is free running at the repetition rate selected by the rate controls In Trigger mode the rate generator is bypassed and the pulse output is merely a shaped version of a pulse input fro
31. e office will also provide information and recommendations on materials to be used if the original packing is not available or re usable General instructions for re packing are as fol lows 5 Mark shipping container FRAGILE to encourage careful handling 4 Seal shipping container securely 1 Wrap instrument in heavy paper or plastic 2 Use strong shipping container A double 6 In any correspondence refer to instru wall carton made of 350 pound test material ment by model number and full serial num is adequate ber Koj RATE GENERATOR 300MHz HEWLETT PACKARD RATE VERNIER a 300 100 10 t 100 10 1 100 10 b 33 10 1 1 30 1 1 10 100 es Men PERIOD EXT INPUT LEVEL GATE i NORM TRIG EXT INT p x 4 5 w 68 XT INPUT TRIGGER OUTPUT RATE switch for selecting the range of pulse repetition rate Rate VERNIER for continuous adjustment of the repetition rate within the range selected on the RATE switch Clockwise rotation increases the pulse period reduces the rate In TRIGGER mode the rate controls have no effect Mode switch for selecting the mode of operation of the rate generator NORM rate generator free running at selected repetition rate TRIG rate generator output is shaped version of input Input is either via the MAN pushbutton or an external signal into the EXT INPUT connector EXT GATE gate signal turns rate ge
32. erator EXTERNAL INPUT Gate on Gate off l I l RATE GENERATOR OUTPUT Last pulse may not be completed Figure 3 5 Rate Generator Output in External Gate Mode SECTION 4 PERFORMANCE TESTS 4 1 INTRODUCTION EQUIPMENT 4 2 The procedures in this section test the Model Counter u SU ta HP 5345A 8081 electrical performance using the specifications of Table 1 2 as the performance standards All tests can be performed without access to the interior of the in strument simpler operational test is included in sec PROCEDURE tion 3 under Operator s Checks ji Set up the equipment as shown in figure 4 1 and 4 3 EQUIPMENT REQUIRED 4 4 Equipment required for the performance tests 15 listed in the Recommended Test Equipment table in section 1 Any equipment that satisfies the critical specifications given in the table can be substituted for the recommended model 4 5 TEST RECORD 4 6 The results of the performance tests can be tabulated on the Test Record at the end of the proce 2 dures The Test Record lists all of the tested specifica tions and their acceptable limits Test results recorded at incoming inspection can be used for comparison in troubleshooting and after repairs or adjustments 4 7 REPETITION RATE TEST SPECIFICATION Repetition Rate escis Emu 10Hz to 300MHz DESCRIPTION The output frequency of the Model 8081 i
33. erial numbers refer to the backdating information in Section 8 of this module manual For instruments with higher serial numbers refer to the Manual Change sheets at the end of this module manual COPYRIGHT HEWLETT PACKARD GMBH 1975 703 B BLINGEN HERRENBERGER STR 110 WEST GERMANY MANUAL PART NO 08081 90001 MICROFICHE PART NO 08081 90501 Printed in West Germany CERTIFICATION The Hewlett Packard Company certifies that this instrument was thoroughly tested and inspected and found to meet its published specifications when it was shipped from the factory The Hewlett Packard Company further certifies that its calibration measurements are traceable to the U S National Bureau of Standards to the extent allowed by the Bureau s calibration facilities or to the calibration facilities of other International Standards Organization mem bers WARRANTY AND ASSISTANCE This Hewlett Packard product is warranted against defects in materials and workmanship This warranty applies for one year from the date of delivery Hewlett Packard will repair or replace products which prove to be defective during the warranty period provided they are returned to Hewlett Packard No other warranty is expressed or implied We are not liable for consequentia damages Service contracts or customer assistance agreements are available for Hewlett Packard products that require maintenance and repair on site For any assistance contact your nearest Hewl
34. et the controls as follows 8081A RATE RANGE 300 100MHz Rate EYIAYSS Y US CCW Operating Modes orsus rui NORM Counter ELequeney week cuyas sy 350MHz 4 Adjust A2R4 to a frequency of 307MHz 5MHz 5 Set the Model 8081A RATE to 100 10MHz and rate VERNIER to CW 6 Adjust A2R8 to a frequency of 9MHz 1MHz 7 Reconnect the equipment as in figure 5 1 and set the controls as follows 8081A su XA agere 300 100MHz Rate VERNIER o CCW Operating Mode u deren et NORM Oscilloscope Sensitivity sua ss yg 200mV div Trigger ind ker Lo SUR UR sas ag internal 455 2 Timebase 20ns div Timebase expanded 0 5ns div Adjust A2R109 for a duty cycle of 5096 10 Connect an external pulse generator to the Model 8081A EXT INPUT connector and set the controls as follows External Pulse Generator Repetition 50MHz Operating Mode square wave Atnplitide eie dein uris rer 1V 2 s susiana q weirs PAQ positive 10 8081A RATE range L ll ore rrr hi wees 300 100MHz Rate VERNIER CCW Operating taput Polarity s n niu REPE POS EXT INPU
35. ett Packard Sales and Service Office Addresses are provided at the back of this manual CONTENTS Page Section1 General information 1 1 1 1 Introduction aswa was sua shua es 1 1 1 4 Specifications 2 1 1 1 6 Safety Considerations 1 1 1 9 Instruments Covered By Manual 1 1 1 11 1 1 1 T4 OptOS Ow 1 2 1 16 Equipment Required But Not Supplied 1 2 1 18 Equipment Available 1 2 1 20 Recommended Test Equipment 1 2 Section2 Installation 2 1 2 1 ltitrod Gtl n 55 65 2 1 2 3 Initial 2 1 2 5 Preparation For 2 1 2 6 Installation in 8080A Mainframe 2 1 2 8 Operating Environment 2 1 2 10 Storage Shipment 2 1 Section Operation 3 1 3 41 lrnitroductlod kx sr kac 3 1 3 3 Panel 3 1 3 5 Operator s Checks 3 1 3 7 Operating Instructions 3 1 3 9 Operator s Checks 3 1 3 12 initial Control Settings 3 1 3 21 Operating Instructions 3 3 3 24 Initial Control Settings 3 3 3 26 Normal Mode 3 3 3 28 Trigger Mode 3 3 3 36 External Gate Mode 3 4 3 40 Internal Gate Mode 3 4 Section4 Performance Tests 4 1 4 1
36. lloscope Oscillator Pulse Generator 50 ohm Feedthrough Termination 50 ohm Tee Connector up to 350 MHz frequency gt 300 MHz bandwidth up to 200 mV div sensitivity up to 0 5 ns div sweep speed 50 ohm input impedance up to 1 MHz bandwidth up to 1 V div sensitivity up to 10 us div sweep speed four input channels up to 10 KHz frequency up to 1 V RMS amplitude 50 ohm output impedance up to 250 MHz frequency 2 ns pulse width 0 5 V amplitude positive polarity 50 ohm output impedance square wave facility HP 8080A HP 5345A HP 182C with HP 1810A plug in HP 182 with HP 1804A and HP 1821A plug ins HP 651B HP 8082A HP 10100C HP 1250 0781 Performance Tests Adjustments Performance Tests Adjustments Performance Tests Adjustments Performance Tests Performance Tests Performance Tests Performance Tests Performance Tests Model 8081A 1 3 Table 1 2 Specifications TIMING Repetition rate Period jitter EXTERNAL INPUTS Repetition rate Trigger mode Gate mode Input impedance Trigger level Sensitivity Slope Max input voltage INTERNAL GATE INPUT Gate duration Input impedance Amplitude High level Max input voltage EXTERNAL TRIGGER OUTPUT Amplitude High level Duty cycle Output impedance Transition time 10 to 90 Max external voltage INTERNAL OUTPUT Fan out Amplitude High level
37. m either an external source or a manual pushbutton In External Gate Mode the rate generator output is gated by a gate pulse from an external source or a manual pushbutton Internal Gate mode can only be useed with an 8084A Word Generator module The trigger slope polarity and threshold level of external gate trigger in puts is adjustable 1 13 The power supplies for the 8081 are pro vided by the 8080A Mainframe 1 14 OPTIONS 1 15 The only option for the 8081A Rate Gener ator is a second copy of the operating and service manual which can be obtained by ordering option 910 1 16 EQUIPMENT REQUIRED BUT NOT SUPPLIED 1 17 To operate the 8081A module an 8080A Table 1 1 Recommended Test Equipment Mainframe is required 8080A mainframe provides housing and power supplies for the 8081A 1 18 EQUIPMENT AVAILABLE 1 19 The 80814 is of a complete range of rep rate timing and output modules that form the 8080 high frequency pulse generator system Repeti tion rates range from 0 1 GHz and the modules are interchangeable to enable you to purchase a system exactly tailored to your requirements 1 20 RECOMMENDED TEST 1 21 Equipment required to maintain the 8081A is listed Table 1 1 Other equipment be substi tuted if it meets or exceeds the critical specifications listed in the table Mainframe Electronic Counter Sampling Oscilloscope Real Time Osci
38. m V Duty Cycle 50 10 5 1 INTRODUCTION 5 2 This section describes adjustments required to return the Model 8081A Repetition Rate Generator to peak operating condition Included in this section are test setups and checks and adjustments Removal and replacement procedures are given in the Disassembly Assembly procedure in section 7 An adjustment locator diagram is included in this section 5 3 SAFETY CONSIDERATIONS 5 4 Although this instrument has been designed in accordance with international safety standards this manual contains information and warnings which must be followed to ensure safe operation and to retain the instrument a safe condition see Sections and III Service and adjustments should be performed only by qualified service personnel Any interruption of the protective grounding conductor inside or outside the instrument or disconnection of the protective earth terminal is likely to make the apparatus dangerous Intentional interruption is prohibited 5 5 Any adjustment maintenance and repair of the opened instrument under voltage should be avoided as much as possible and when inevitable should be carried out only by a skilled person who is aware of the hazard involved The opening of covers or removal of parts except those to which access can be gained by hand may expose live parts and also accessible termi nals may be live 5 6 Capacitors inside the instrument still
39. nerator on synchronously Repetition rate as selected on rate controls Gate signal either via the MAN pushbutton or the EXT INPUT connector Max gate frequency 150 MHz INT GATE external input is disconnected Gate signal is pro vided internally by the word generator module and Figure 3 1 8081A Controls and Connectors turns the rate generator on synchronously Repeti tion rate as selected on the rate controls EXT INPUT LEVEL control determines the threshold voltage of the external trigger input Adjustable from 1V to 1V NEG POS MAN switch for selecting the slope polarity and or source of external trigger signals In the POS and NEG positions signals are applied via the EXT INPUT connector In the MAN posi tion the MAN pushbutton is used as the trigger MAN pushbutton for generating external trigger signals when in TRIG and EXT GATE modes The NEG POS MAN switch must be in the MAN posi tion EXT INPUT connector DC coupled input to which external trigger gate signals are applied Input impedance is 50 ohms Maximum input level is 6V TRIGGER OUTPUT connector provides negative output pulses in all modes of operation In TRIG mode the output pulses are related to the trigger input and not the repetion rate generator Maxi mum external voltage is 2V 3 1 INTRODUCTION 3 2 This operating section explains the function of the controls and connectors and describes the opera tors checks and ty
40. o Dau ur auv tes 2 gt gt gt wa 444 D D NO C ul AN AP x x 5ao0 im wQ Co 1001 Lt ate DWO VD GVO OUD RAM MATL BAD COON ANIM Quran 22 VERNER 75 RATE R VAR LOK 5 1 Col AY INTL CUT PANEL SUB INDL 2160 2944 3 4 61601 4 2100 3652 RL 6 6 Tabie 6 2 Replaceable Parts cont d MGCEL 89314 INSTRUMENT SERIAL PREFIX COEL 8CalA BD AY RATE DESCR IUN 8901 66522 INSTRUMENT SERIAL PREF X DESCRIPTION H P PART NUMBER vee NN aa ne 5 lt aman 4 MADD wea gt IDA Me yvouam brates C x w mm gt m Ka 07063 54 wo NATHo Or Nay accu NAINA IAAL onan FRA vrs Morro ere xr uo mr Quang o ence a Za uo x xo uu un wu NNN NNNNA aqaa 2 e o z 2 z z wow Porn x w O gt tin o wvao o ua gt a MWY v Mom eG N Daron F oN Y Mo MPO T N ama LIDA 4 9 OT O ONNO N 12 TZ N MANO us x
41. pical operating modes of the 8081 A 300 MHz Rate Generator module 3 3 Panel Features 3 4 Front panel controls and connectors are shown in figure 3 1 Description numbers match the numbers on the illustration 3 5 Operator s Checks 3 6 Use the Operator s Checks paragraph 3 9 to verify that the 8081A is functioning correctly The 8081A must be installed in an 8080A Mainframe for these checks Thus it is important to remember that any fault that is found may be the 8081A Rate Generator or the 8080A Mainframe If the mainframe is suspected carry out the 8080A Performance Checks 3 7 Operating Instructions 3 8 Operating Instructions paragraph 3 21 consist of a number of procedures that explain in detail the function of each of the 8081A controls All operating modes are described However Internal Gate mode can only be used if an 8084A 300 MHz Word Generator module is available 3 9 OPERATOR S CHECKS 3 10 The test set for the Operator s Checks is as shown in figure 3 2 The 8081A Rate Generator mo dule must be mounted in an 8080A Mainframe 3 11 Set the LINE switch 9 on the 8080A Main frame to ON SECTION 3 OPERATION 3 12 Initial Control Settings 8081A HATErangeswit h oes strt 300 100 MHz 2 Rate VERNIER yas CCW Mode switehi rasioni rerainan Y ese Y NORM 5 NEG POS MAN MAN Oscilloscope 100mV div
42. r module Figure 1 1 shows the module and accessories supplied This section covers instrument identification descrip tion accessories specifications and other basic informa tion 1 3 A microfiche version of this manual is avai lable on 4 x 6 inch microfilm transparencies order num ber on title page Each microfiche contains up to 60 photo duplicates of the manual pages The microfiche package also includes the latest Manual Changes supple ment as well as all pertinent Service Notes 1 4 SPECIFICATIONS 1 5 Instrument specifications listed table 1 2 These specifications are the performance standard or limits against which the instrument is tested 1 6 SAFETY CONSIDERATIONS 1 7 The Model 8081 is a Safety Class 1 instru ment it has an exposed metal chassis that is connected to earth via the 8080A system mainframe This instru ment has been designed according to international safety standards and has been supplied in a safe condition 1 8 This operating and service manual contains information cautions and warnings which must be fol lowed by the user to ensure safe operation and to main tain the instrument in a safe condition 1 9 INSTRUMENTS COVERED BY MANUAL 1 10 Attached to the inside of the instrument side frame is a serial number plate figure 1 1 The first four digits of the seria number only change when there SECTION 1 GENERAL INFORMATION is a significant change to th
43. r use and packag ing storage and shipment 2 3 INITIAL INSPECTION 2 4 Inspect the shipping container for damage If the container or cushioning material is damaged it should be kept until the contents of the shipment have been checked for completeness and the instrument has been checked mechanically and electrically The con tents of the shipment should be as shown in Figure 1 1 Procedures for checking the electrical operation are given in Section 3 If the contents are incomplete if there is mechanical damage or defects or if the 8081A does not pass the operator s checks notify the nearest Hewlett Packard Sales Service office If the shipping container is damaged or the cushioning material shows signs of stress notify the carrier as well as the Hewlett Packard office Keep the shipping materials for carrier s inspection The HP office will arrange for repair or repla cement without waiting for claim settlement 2 5 PREPARATION FOR USE 2 6 Installation in 8080A Mainframe The following installation procedure must only be carried out by qualified service personnel 2 7 operate the 8081A it must first instal led in an 8080A Mainframe as follows 1 Switch the mainframe LINE OFF ON switch to OFF Disconnect the power supply cable from the rear of the 8080A main frame 2 8 2 9 SECTION 2 INSTALLATION 2 Remove the upper two feet from the rear of the 8080A mainframe 3 Remove the 80
44. s checked over the full repetition rate range 8081A 8080A MAINFRAME COUNTER Figure 4 1 Repetition Rate Test Setup set the controls as follows 8081A RATEFaHge sse 300MHz 100MHz tate u os ex M ETEY CCW Operating Mode switch NORM NEG POS MAN switch POS Using the counter measure the Model 8081 A out put frequency at the following repetition rate settings 8081A RATE VERNIER RESULT 300MHz 100MHz CCW gt 300MHz 300MHz 100MHz CW lt 100MHz 100MHz 10MHz CCW gt 100MHz 100 2 10 2 Cw lt 10MHz 10MHz 1MHz CCW gt 10MHz 10MHz 1MHz Cw lt 1MHz 1MHz 100KHz CCW gt 1MHz 1MHz 100KHz CW lt 100KHz 100KHz 10KHz CCW gt 100KHz 100KHz 10KHz CW lt 10KHz 10KHz 1KHz CCW gt 10KHz 10KHz 1KHz CW lt 1KHz 1KHz 100Hz CCW gt 1KHz 1KHz 100Hz CW lt 100 2 100Hz 10Hz CCW gt 100Hz 100 2 10Hz Cw lt 10Hz 4 8 TRIGGER OUTPUT TEST SPECIFICATION Trigger Qutput PUSE xis pr rus 6V 50mV to OV 50m V Duty Cycle i3 50 96 10 96 DESCRIPTION The trigger output pulse parameters are tested SAMPLING OSCILLOSCOPE Figure 4 2 Trigger Output Test Setup EQUIPMENT Sampling oscilloscope HP 182C Mainframe with 1810A plug in PROCEDURE 1 Set up the equipment as shown in figure 4 2 and set the controls as follows 8081A RATErange 22 999 x 300
45. y a trigger signal of 250MHz SAMPLING OSCILLOSCOPE Pulse Generator Figure 4 6 External Trigger Mode Fast Test Setup EQUIPMENT Pulse Generators cn nds punas HP 8082A Sampling Oscilloscope HP 182C with 1810A plug in PROCEDURE T Set up the equipment as shown in figure 4 6 and set the controls as follows Pulse Generator Repetition Tate ur u busmania 250MHz Pulse Width 2ns Aim plitude 0 2 V POU ETHIE tsa aS amy mun lane s ove positive 8081A BATETAN edere dee Rare uyu vary aaa bet sents Operating Mode switch TRIG EXT NP INEMEE center NEG POS MAN switch POS Oscilloscope Sensitivity e C serene qe ew 200mV div oce deos nace Sls external Timebase mode sem eec Us expanded Timebase direct 20ns div Timebase expanded 0 5ns div 2 Adjust the Model 8081A EXT INPUT LEVEL control to obtain a stable 50 duty cycle display 3 Each trigger pulse from the pulse generator should release one output pulse from the Model 80814 Check that the display has a frequency of 250MHz 4 13 EXTERNAL GATE MODE FAST TEST SPECIFICATION Same as EXTERNAL GATE MODE SLOW paragraph 4 10 DESCRIPTION The maximum external gate frequency of the Model 80814 is teste
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