Agilent Technologies 81101A manual

S S 1 Agilent 81101 A 50 MHz Pulse Generator Reference Guide[...]

Per 1.000 µ µ µ µ s Normal OUTPUT TRG-LEV LIMITS MODE/TRG OFF Delay 1 0ps Width LeadE TraiE 100.0ns 5.00ns =LeadE Offset Amplit +0.0mV 1.00V 50 Ω Ω Ω Ω into 50.0 Ω Ω Ω Ω *OFF ON MODIFY MORE GRAPH Use the KNOB to select a mode or modify parameters and formats Press ENTER or a UNIT key to confirm parameter changes Use the CURSOR k[...]

Refer ence G uide Agilent 81101 A 50 MH z Pulse Generator Part No . 81101-91 021 Printed in Germany March 200 0 Edit ion 1.0, E0 300[...]

4 Notice Notice Copyrigh t  1998 A gilen t T echn ologies 1 998, 2 000. Al l righ ts rese rved. No part of this manual ma y be reproduc ed in any for m or by any mean s (includin g electro nic stora ge and ret rieval or tran slation int o a foreign language ) without prior agreeme nt and written conse nt from Agile nt T echn ologies Inc. a s gov[...]

5 Notic e Agilent T echnologies warrants that its software and firmware de signated by Agilent T e chnologies for use with an instrume nt will execute its progra mming instructions w hen properly insta lled on that instrum ent. Agil ent T ech nologi es does not wa rrant that t he oper ation o f the instrume nt software, or firm ware, w ill be unint[...]

6 Safety Summa ry Safety Summary The fol lowin g genera l saf ety prec autions mu st be ob served d uring a ll phases of opera tion of this instrument. Failure to comply with these precau tions or with specific wa rning s elsewhe re in this m anual v iolates safety standa rds of design, manufacture, a nd intended use of the instrument . Agilent T e[...]

7 Safety Summ ary Ground the Instrument T o minimize shock ha zard, the instrument chassis and c over must be connect ed to an electri cal pr otecti ve eart h ground . The in strument must be conne cted to the ac powe r mains throug h a grounded power cable , with t he gro und wire firmly connec ted t o an elec trical ground (safet y ground) a t th[...]

8 Safety Summa ry Safety Sym bols Caution (re fer to accomp anying do cuments) Protec tive earth (ground) te rminal In th e man uals : WAR NIN G The W ARNING sig n denotes a hazard. It calls a ttenti on to a procedur e, practice, o r the like, which, if no t correct ly performed or adher ed to, coul d res ul t in pe rson al i njur y . Do not p roce[...]

9 About this Book About this Book This gu ide prov ides refe rence i nformati on primar ily fo r program ming the Agilen t 81101A via rem ote contr ol. Chapter 1 “General Programming As pects” on page 13 gi ves gene ral hints for prog ramming inst ruments like the Agilen t 81101A usin g SCPI comm ands. Chapter 2 “Programming Reference” on p[...]

10 About thi s Book Conventions U sed i n this Book This book uses certain conv entions to indic ate elements of the Agilen t 81101A ’ s user inte rface . The foll owing ta ble sho ws some exam ples: Softkeys Press the MO DE/TRG softk ey to access the Mode/ T rigger scr een. Hardkeys Press the MO RE key to s witch to the alte rnativ e softkey l a[...]

xi Contents Notice .................. ............................... ................................ ........ 4 Safety Summary ................................. ................................ ........ 6 About this Book ............ ................................ ............................. 9 Chapter 1 Gene ral Pr ogram ming As pects The GP-[...]

xii Contents Agilent 81101A S pecifications ............................. .................. 91 General .......... ................. ........... ................. ................. ........... ................ 91 Timing Specifications .............. ........... ................. ................. ............ .... 93 Level Specifications ..........[...]

13 1 1 General Programming Aspects This ch apter pr ovides general i nformat ion on wri ting GP-IB/SCPI programs f or instruments lik e the Agilent 81 101A. Detailed informa tion on pr ogramming the Agile nt 81101A ca n be found in Chapter 2 “Programming Reference” on page 25 .[...]

14 General Programming Aspects The GP -IB Inte rface Bus The G P-IB Inte rface B us The Gene ral Pu rpose In terface Bus is the interf ace used for comm unicatio n betw een a controll er an d an ex tern al devic e, suc h as t he Agilen t 81130A. The GPIB co nforms to IEEE sta ndard 488- 1987, ANSI standa rd MC 1 .1, and I EC re commend ation 625-1.[...]

15 General Programming Aspects Agilent 81101A Remo te Control Agilent 81101A Remote Control GP-IB Address Y ou can only set the GP-IB address from the front pane l of the instrumen t (refe r to th e Quick Star t Gui de ). The default GP-I B address is 10. Mode s of Operat ion The Agilent 8110 1A has two modes of ope ration: • Local The instr umen[...]

16 General Programming Aspects Progr ammin g Recom menda tions Programming Recommendations Here are som e recommenda tions for progra mming the in strument: • Start prog ramming f rom the def ault setting . The common c ommand for set ting the def ault setting is: *RST • Switch off th e auto mati c update of the d ispla y to in creas e the prog[...]

17 General Programming Aspects Progr amming Reco mmendatio ns When you have fou nd the co rrect set ting, then use thi s to cr eate the progra m. In the p rogram it is reco mmended to send t he comm and for enabli ng outp uts (for exampl e, : OUTPu t ON ) as the last command . W i th t his proc edure it is possibl e to swit ch off the e rror chec k[...]

18 General Programming Aspects Common Command Summary Common Command Summary This table summ arizes the IEEE 48 8.2 commo n commands supp orted by the Agi lent 81101A: Command Paramete r Descripti on *CLS – Cle ar the s tatus st ructur e *ESE <0–255> Set the Standa rd Even t Statu s registe r mask *ESE? – Read the state of the Sta ndard[...]

19 General Programming Aspects Status Model Status Model The instrum ent has a status repor ting system co nforming to IEEE 488.2 and SCP I. The above f igure shows t he status group s availab le in the instrument . Each status grou p is made up of comp onent registe rs, as shown in the followi ng figure. 0 1 2 3 4 5 6 7 8 9 15 0 1 2 3 4 5 6 7 8 9 [...]

20 General Programming Aspects Status Mode l Condition Register A condit ion register contains the curren t status of the hardware a nd firmware. It is co ntinuously upd ated and is no t latched or buffere d. Y ou can on ly rea d condi tion registers. I f there is no c ommand t o read the conditio n register of a partic ular status group, th en it [...]

21 General Programming Aspects Status Model Enabl e Register The enabl e register defi nes which bits i n an event register are in cluded in the log ical OR into the summ ary bit. The enable r egister i s logicall y ANDed with the e vent register and the r esulting b its ORed i nto the summary bit. En able reg isters are r ead/wri te, and ar e not [...]

22 General Programming Aspects Status Mode l Status By te The statu s byte sum marize s the infor mation from all ot her st atus gro ups. The sum mary bi t for the status byte act ually appears i n bit 6 (RQS) of the status byte. When R QS is set it generat es an SRQ interrupt to the contro ller indica ting that at least one in strument on the bus [...]

23 General Programming Aspects Status Model OPERation Status Group This Status Grou p is not used in the instru ment. Bit De scrip tion 0 Unus ed, alw ays 0 1 Unus ed, alw ays 0 2 Unus ed, alw ays 0 3 Unus ed, alw ays 0 4 Unus ed, alw ays 0 5 Unus ed, alw ays 0 6 Unus ed, alw ays 0 7 Unus ed, alw ays 0 8 Unus ed, alw ays 0 9 Unus ed, alw ays 0 10 U[...]

24 General Programming Aspects Status Mode l QUEStionable Status Group The QUES tionable Status g roup is used to repo rt warning conditions amongst th e voltage, cu rrent, pulse timin g and freque ncy parameter s. W arning s occur whe n a parameter , although no t outside its maxi mum limits, could be causing an inv alid signal at th e output beca[...]

25 2 2 Programmin g Reference This ch apter pr ovides referen ce infor mation on the followin g topics: • “Agilent 81 101A SCP I Command Su mmary” on page 26 • “Def ault Value s, St andar d Set tings ” on pa ge 31 • “Programming the Instrument Trigger Modes” on page 35 • “SCPI Instrument Command List ” on page 38 For gen era[...]

26 Programming Reference Agilent 81101A SCPI Command Summary Agilent 81101A SCPI Command Summary Command Parameter D escriptio n see page :ARM (T rigge r mode and source) [:SEQuence[1] | :STARt] [:LAYer[1]] :EWIDTh [:STATe] ON|OFF|1|0 Set/read External Width mode 39 :FREQuency <value> Set/read trigger frequenc y , when PLL(INT2) used as sourc[...]

27 Programming Reference Agilent 81101A SCPI Command S ummary :OUTPut[1] [:NORMal] [:STATe] OFF|ON|1|0 Set/read normal outpu t state :IMPedance 47 [:INTernal] <value> Set/read internal source im pedance of output :EXTernal <value> Set/read e xpected ex ternal load impe d- ance at output 47 :POLarity NORM|INV Set/read outp ut polarity 48[...]

28 Programming Reference Agilent 81101A SCPI Command Summary :DOUBle[1] [:STATe] OFF|ON Enable/disable double pulses per pulse period 59 :DELay <value> Set/read de lay between doubl e pulses 60 :HOLD TIME|PRA Tio Hold absolute delay|phase delay f ixed with varying freque ncy 61 :UNIT S|SEC|PCT Set/read de lay units 61 :HOLD[1] WIDTh|DCYCle|TD[...]

29 Programming Reference Agilent 81101A SCPI Command S ummary :OFFset <value> Set/read channel o ffset vol tage 71 :HIGH <value> Set/read channel h igh level voltage 72 :LOW <value> Set/read channel lo w level v oltage 73 :LIMit [:HIGH] Set/read m aximum vo ltage limit 74 :LOW Set/read m inimum volt age limit 74 :STATe ON|OFF|1|0 [...]

30 Programming Reference Agilent 81101A SCPI Command Summary [:STATe] ON|OFF Switch security on and off 82 :SET Block data Set/read compl ete instrument setting 83 :VERSion? Read SCPI com pliance setting 83 :WARNing [:COUNt]? Read number of active warnings 83 :STRing? Read active warnings as concate nated strin g 84 :BUFFer? Read maxim um possible [...]

31 Programming Reference Default Values, Standard Settings Default V alues, Standard Settings Parameter *RST , Default V alues :ARM : E WIDth: ST A T e OFF :FREQ uency 100kHz :IMPedanc e 50 Ω :LEV e l +1.00V :PERi od 1 0.00 µ s :SENSe EDGE :SLOPe POS :SOUR ce IMMediate :DISPlay [:WI NDow] [:ST A T e] ON :MMEMory :CA T alog? not applicable :CDIRe[...]

32 Programming Reference Default V alues, Standard Settin gs :LOW –1 0.0mA :ST A T e OFF :FREQ [:CW|:FIX ed] 1.00MHz :AUTO not applicable :HOLD VOL T :PHASe[1][:ADJust] 0.0 :PULSe: :DCYCle[1] 10.0% (derived from W idth and Period) :DEL ay[1] 0.0 :HOLD TIME :UNIT S :DOUBle[1][:ST A T e] OFF :DEL ay 250 n s :HOLD TIME :UNIT S :HOLD[1] WIDTh [:SOURc[...]

33 Programming Reference Default Values, Standard Settings [:SOURce ]:VOL Tage[1] :LEV e l] [IMMedi ate] [:AMPLitude] 1.0V :OFF Set 0.0V :HIG H 500mV :LOW –5 00mV :LIMIt[:High] +50 0V :LOW –5 00V :ST A T e OFF :ST A T us: :OPERation not applicable :PRESet not applicable :QUEStionable[:EVENt]? not applicable :CONDition? not applicable :ENABle no[...]

34 Programming Reference Default V alues, Standard Settin gs :LEV el 1.0V :SLOPe POSitive :SOUR ce IMMediate Parameter *RST , Default V alues[...]

35 Programming Reference Programming the In strument T rigger Modes Programming the Instrument T rigger Modes The following figure show s the instrum ent’ s arming /triggering model: Y ou program the c omprehensive trig gering capabilit ies of the instrum ent using th e SCPI :ARM and :TRIGger subsystems. Using th ese two comm and subsystem s you [...]

36 Programming Reference Progr ammi ng the I nstru ment T r igg er Mode s Use the :ARM s ubsyst em to s elect the overal l tri ggerin g mode of the instrument ( CONTIN UOUS , TRIGGERE D , GATE D , EXT WIDT H ), an d the :TRIGg er subsystem to select the pulse perio d source, trig gering and number of pulse periods pe r :ARM event ( BURST or PATTERN[...]

37 Programming Reference Programming the In strument T rigger Modes External W idth Set Exte rnal W idth mod e using the :E WIDt h[:STA Te] command: :ARM:EWIDth ON Switch on EXT WIDTH mode This c ommand disables the arm- trigger sy stem. The ar m-trigg er system i s reenable d by switc hing O FF EWIDth mode. Pulses Set Pulses mode by setting the :T[...]

38 Programming Reference SCPI Instrument Command List SCPI Instrument Command List The fol lowing r eferenc e sections list th e instrumen t comman ds in alphabe tical order . In addition to a command desc ription, the att ributes of each co mmand ar e described u nder the follow ing heading s. Not all of these at tributes are appl icable t o all c[...]

39 Programming Reference SCPI Instrume nt Command List Command :ARM:EWID Long :ARM[:SEQuence[1]|STAR t][:LAYer]:EWIDth[:STATe] Form Set & Query Parameter ON | OFF | 1 | 0 *RST value OFF Description Use this co mmand to enable t he EXT WIDTH t rigger mode avai lable on the M ODE /T RI GGER SCREEN . When EXT WIDTH mode is switched on, th e rest o[...]

40 Programming Reference SCPI Instrument Command List Command :ARM:IMP Long :ARM[:SEQuence[1]|STAR t][:LAYer]:IMPedance Form Set & Query Parameter Num eric Parameter Suffix OHM with en gineering p refixes, e.g.: MOHM is Me gaohms. *RST value 50 Ω Specified Lim its 50 Ω or 10 k Ω Description Use this command to pr ogram the input impeda nc[...]

41 Programming Reference SCPI Instrume nt Command List Command :ARM:P ER Long :ARM[:SEQuence[1]|STAR t][:LAYer]:PERiod Form Set & Query Parameter Num eric Parameter Suffix S or SE C with e ngineer ing pref ixes. *RST value 10.0 0 µ s Specified Limits 20 ns to 999.5 s Description Us e this command to progr am the period of the PL L (IN T erna l[...]

42 Programming Reference SCPI Instrument Command List Command :ARM:SENS Long :ARM[:SEQuence[1]|STAR t][:LAYer]:SENSe Form Set & Query Parameter EDGE | LEVe l *RST value EDGE Description Use this command to selec t T rigge red or Gate d mode by choosing whethe r the instrum ent arm s on the e dge(s) or level of the a rming signal. When sensi ng [...]

43 Programming Reference SCPI Instrume nt Command List Command :ARM:SOUR Long :ARM[:SEQuence[1]|STAR t][:LAYer]:SOURce Form Set & Query Parameter IM Mediat e|INTer nal[1] |INT ernal2 |EXTern al[1]| MANual *RST value IMM Description Use this co mmand to select t he tri ggering m ode of the instr ument by selectin g the sour ce of the a rming sig[...]

44 Programming Reference SCPI Instrument Command List Command :MMEM:CA T? Long :MMEMory:CATalog? Form Query Parameter [" A:"] *RST value Not applicable Description Use this co mmand to get a list ing of the conte nts of the curr ently select ed dire ctory on the me mory ca rd. As th ere is o nly one memory card slot, th e param eter A: is[...]

45 Programming Reference SCPI Instrume nt Command List Command :MMEM:COPY Long :MMEMory:COPY Form Even t Parameter "f ilenam e"[,"A: "],"co pyna me"[," A:"] *RST Not applicable Description Use this command to c opy an existi ng file filename in the current directory to a new file copyname . If copyname is the[...]

46 Programming Reference SCPI Instrument Command List Command :MMEM:LOAD:ST A T Long :MMEMory:LOAD:STATe Form Even t Parameter <n >,"fil ename"[ ,"A:"] *RST Not applicable Specified Lim its <n> = 0 to 9 (integ er) Description Use this command to load a c omplete instr ument setti ng from file filename in the current [...]

47 Programming Reference SCPI Instrume nt Command List Command :OUTP[1] Long :OUTPut[1][:NORMal][:S TATe] Form Set & Query Parameter ON | OFF | 1 | 0 *RST value OFF Description Use this command to swit ch the norma l OUTPUT on or off . Example T o swit ch on the outpu t: :OUTP ON Command :OUTP[1]:I MP Long :OUTPut[1]:IMPedance[: INTernal] Form [...]

48 Programming Reference SCPI Instrument Command List Specified Lim its 0.1 Ω to 1 M Ω Description Use this co mmand to set the e xpected l oad imped ance of th e devi ce under test at the OUT PUT conn ecto rs. If you have a non-50 Ω load , the output lev els at the devi ce under test wi ll not be the lev els you program or set vi a the front[...]

49 Programming Reference SCPI Instrume nt Command List V alu e coupl ing Range co upling Offset Description Use this co mmand to program th e ampl itude cur rent of the OUTPUT signal. Note that to set the OUTPUT levels in terms o f current, yo u first have t o execut e the [:SO URce]:H OLD CURR ent comma nd to ena ble th e [:SOUR CE ]: CURR ENT sub[...]

50 Programming Reference SCPI Instrument Command List Range co upling Amplitude Description Use this co mmand to p rogram the offset current o f the OU TPUT signal. Note th at to set t he OUTPU T levels i n terms of curren t, you f irst have to exec ute th e [:SOUR ce]:HO LD CURRe nt command to enabl e the :SOURc e]:C URRent subsystem. The ava ilab[...]

51 Programming Reference SCPI Instrume nt Command List have t o execut e [:SOUR CE]: HOLD CUR Re nt comm and to enable the [:SOUR CE]: CURRent subsystem. The ava ilable current r ange i s limite d by th e combi nation o f: • Specif ied Volt age limi ts • Actual OUTPUT Impedance setting :OUTPu t:IMPe dance • Actu al Ex pecte d Load impe danc e[...]

52 Programming Reference SCPI Instrument Command List • Specif ied Volt age limi ts • Actual OUTPUT Impedance setting :OUTPu t:IMPe dance • Actu al Ex pecte d Load impe danc e sett ing: :OUTPU T:IM Pedance :EXTer nal Exam ple T o progra m the low level current of th e output sign al: Command :CURR[1 ]:LIM Long [:SOURce]:CURRent[1]:L IMit[:HIG[...]

53 Programming Reference SCPI Instrume nt Command List Command :CURR[1 ]:LIM:LOW Long [:SOURce]:CURRent[1]:L IMit:LOW Form Set & Query Parameter Num eric Parameter suffix A with engi neering p refixes. *RST value –10.0 mA Description Use this command to set/read th e low le vel curren t limit. If y ou switch on current lim iting, the low leve[...]

54 Programming Reference SCPI Instrument Command List Example T o set and ac tivate the curren t limits fo r the outp ut: Command :FREQ Long [:SOURce]:FREQuency[:C W|:FIXed] Form Set & Query Parameter Num eric Parameter Suffix Hz wit h engin eering pre fixes, or MH Z for Megahe rtz. V alu e coupl ing *RST value 1. 00 MHz Specified li mits 1m H [...]

55 Programming Reference SCPI Instrume nt Command List Command :FREQ:AUTO Long [:SOURce]:FREQuency[:C W|:FIXed]:AUTO Form Even t Parameter ON CE *RST value Not applicable Description Use this co mmand to m easure the frequen cy at th e CLK-IN co nnector . If the CLK -IN co nnector is the s electe d pulse f requen cy source , you ca n then rea d the[...]

56 Programming Reference SCPI Instrument Command List Command :PHAS[1] Long [:SOURce]:PHASe[1][:AD Just] Form Set & Query Parameter Num eric Parameter suffix DEG or RA D . A para meter wi thout a suff ix is in terpre ted as RA D . Functional coupli ng Program ming the pulse phase also exec utes [:SOURce ]:PULS e:HOLD PHASe so that the p ulse ph[...]

57 Programming Reference SCPI Instrume nt Command List Command :PULS:DCYC[1] Long [:SOURce]:PULSe:DCYCle [1] Form Set & Query Parameter Num eric V alu e coupl ing *RST value 10.0% (der ived fro m width and peri od) Specified li mits 0.001% to 99.9% , depends on width, tra nsition & period. Description Use this co mmand to program the duty c[...]

58 Programming Reference SCPI Instrument Command List Specified li mits 0.00 ns to 999 s (lim ited by peri od – 20 ns) Description Use this co mmand to set/rea d the puls e delay . Delay is the t ime be tween the start of the pu lse period and the st art of th e leading e dge of t he pulse. If you want th e pulse delay to remain constan t when th[...]

59 Programming Reference SCPI Instrume nt Command List Command :PULS:DEL[1]:UNIT Long [:SOURce]:PULSe:DELay[ 1]:UNIT Form Set & Query Parameter S | SEC | PCT | DEG | RAD *RST value S Description Use this co mmand to set/rea d the defa ult un its for the pul se dela y paramet er . The defaul t unit of a para meter is the unit u sed when the para[...]

60 Programming Reference SCPI Instrument Command List Command :PULS:DOUB[1]:DEL Long [:SOURce]:PULSe:DOUBle [1]:DELay Form Set & Query Parameter Num eric Parameter suffix S with engi neering p refixes. Y ou c an change the defau lt unit usi ng [:SOUR ce]: PULSe:D OUBle: DELay[ 1]:UNIT . V alu e coupl ing *RST value 0.0 Specified li mits 10 ns t[...]

61 Programming Reference SCPI Instrume nt Command List Command :PUL S:DOUB [1]:DEL:H OLD Long [:SOURce]:PULSe:DOUBle [1]:DELay:HOLD Form Set & Query Parameter TI ME|PRA Tio *RST value TIME Description Use this comman d to set/re ad the co upling be tween the pulse per iod and the doub le-pulse de lay: Example T o set a nd hold the doub le-pulse[...]

62 Programming Reference SCPI Instrument Command List Command :PUL S:HOLD [1] Long [:SOURce]:PULSe:HOLD[1 ] Form Set & Query Parameter WI DTh | DCYCl e | TDELay *RST value WIDTh Description Use th is comm and to set wheth er the pul se width , the pulse du ty cycle o r the pulse trailing ed ge delay is he ld constant wh en the pulse pe riod is [...]

63 Programming Reference SCPI Instrume nt Command List Y ou cannot set the pulse period if you have selecte d the CLK-IN connect or as the freq uency so urce ( :TRIG: SOUR EX T ). Example T o set the pulse period using the interna l oscillator: Command :PULS:PER:AUTO Long [:SOURce]:PULSe:PERiod :AUTO Form Even t Parameter ON CE *RST value Not appli[...]

64 Programming Reference SCPI Instrument Command List Example T o pr ogram the p ulse width by mea ns of the delay parameter s: Command :PULS:TRAN[1]:H OLD Long [:SOURce]:PULSe:TRANsi tion[1]:HOLD Form Set & Query Parameter TI ME | W RATio *RST value TIME Description Use this co mmand to set the c oupling between transit ion times a nd the puls[...]

65 Programming Reference SCPI Instrume nt Command List Command :PULS:TRAN[1]:UNI T Long [:SOURce]:PULSe:TRANsi tion[1]:UNIT Form Set & Query Parameter S | SE C | PCT *RST value S Description Use this command to set the default units for th e pulse tran sition times. The default unit is used when t he paramete r is programm ed to a valu e withou[...]

66 Programming Reference SCPI Instrument Command List Command :PULS:TRAN[1]:TR A Long [:SOURce]:PULSe:TRANsi tion[1]:TRAiling Form Set & Query Parameter Num eric Parameter suffix S with engi neering p refixes, or PCT *RST value 5n s Specified li mits 5 ns to 200 ms Para met er coupli ng By default: T railing edge = Leading edge with :PUL S:TRAN[...]

67 Programming Reference SCPI Instrume nt Command List Command :PULS:TR AN[1]:TRA:AUTO Long :[SOURce]:PULSe:TRANsi tion[1]:TRAiling:AUTO Form Set & Query Parameter ON |OFF|O NCE *RST value ON Description Use this comm and to set /read the automatic co upling of the pulse t railing edge tran sition time to the le ading edge transition ti me. Exa[...]

68 Programming Reference SCPI Instrument Command List Command :PULS:WIDT[1] Long [:SOURce]:PULSe:WIDTh[ 1] Form Set & Query Parameter Num eric Parameter suffix S with engi neering p refixes *RST value 100 n s Specified li mits 10 ns to 999.5 s (max. pe riod –10 ns) Description Use this command to pr ogram the wid th of the pulse sig nal. If y[...]

69 Programming Reference SCPI Instrume nt Command List Example T o set up th e external PLL refe rence: Command :ROSC:EXT :FREQ Long [:SOURce]:ROSCillator: EXTernal:FREQuency Form Set & Query Parameter Num eric *RST value 5 MHz Specified li mits 5 MHz or 10 MHz Description Use this command to set/rea d the ex pected r efere nce freq uency f or [...]

70 Programming Reference SCPI Instrument Command List Command :VOL T[1] Long [:SOURce]:VOLTage[1][: LEVel][:IMMediate][:AMPLitude] Form Set & Query Parameter Num eric Parameter suffix V with engi neering p refixes. V alu e coupl ing Range co upling W ith Offset, see page 7 1 *RST value 1.00 V Specified li mits 100 mVpp t o 10.0 Vpp (va lues are[...]

71 Programming Reference SCPI Instrume nt Command List Command :VOL T[1]:OF FSet Long [:SOURce]:VOLTage[1][: LEVel][:IMMediate]:OFFSet Form Set & Query Parameter Num eric Parameter suffix V with engi neering p refixes. V alu e coupl ing Range co upling With Amplitude, see page 70 *RST value 0.0 mV Specified Lim its –10 V to +10 V Description [...]

72 Programming Reference SCPI Instrument Command List Command :VOL T[1]:HI GH Long [:SOURce]:VOLTage[1][: LEVel][:IMMediate]:HIGH Form Set & Query Parameter Num eric Parameter suffix V with engi neering p refixes. V alu e coupl ing Range co upling W ith low level, see page 73 *RST value 500 m V Specified li mits –9.9 V to 10 .0 V (50 Ω into[...]

73 Programming Reference SCPI Instrume nt Command List Command :VOL T[1]:LOW Long [:SOURce]:VOLTage[1][: LEVel][:IMMediate]:LOW Form Set & Query Parameter Num eric Parameter suffix V with engi neering p refixes. V alu e coupl ing Range co upling W ith hig h level, s ee page 72 *RST value –500 mV Specified li mits –10.0 V t o 9.9 V (50 Ω i[...]

74 Programming Reference SCPI Instrument Command List Command :VOL T[1]:LIM Long [:SOURce]:VOLTage[1]:L IMit[:HIGH] Form Set & Query Parameter Num eric Parameter suffix V with engi neering p refixes. *RST value +500 mV Description Use this co mmand to set/read the high level vo ltage li mit. If yo u switch on vol tage li miting, the high level [...]

75 Programming Reference SCPI Instrume nt Command List Command :VOL T[1]:LIM:ST A T Long [:SOURce]:VOLTage[1]:L IMit:STATe Form Set & Query Parameter ON | OFF | 1 | 0 *RST value OFF Description Use this co mmand to switch the outpu t limits on or off . When you switch on the outpu t limits, you ca nnot progra m the outpu t levels beyon d the pr[...]

76 Programming Reference SCPI Instrument Command List Command :ST A T us:PRESet Long :STATus:PRESet Form Even t *RST value Not Applica ble Description This co mmand • Clears a ll status g roup event register s • Clear s the erro r queue • Presets t he status group enab le-, PTR-, an d NTR-reg isters as foll ows: Command :ST A T us:QUEStionab [...]

77 Programming Reference SCPI Instrume nt Command List 1. :STATus:QUEStionable [:EVENt]? 2. :STATus:QUEStionable:CONDition? 3. :STATus:QUEStionable:ENABle 4. :STATus:QUEStionable:NTRansition 5. :STATus:QUEStionable:PTRansition Form *RST value Description Query Not Applicable This co mmand reads the event registe r in the QUE Stionable st atus group[...]

78 Programming Reference SCPI Instrument Command List Command :SYST :CHEC Long :SYSTem:CHECk[:ALL][:S TATe] Form Set & Query Parameter OF F | ON *RST value ON Description Use this command to swit ch the instrume nt’ s err or checking on or off. Switch off the error checkin g if you want to im prove the p rogramm ing speed of the instru ment, [...]

79 Programming Reference SCPI Instrume nt Command List The ab ove messa ge is an example of a c ustomiz ed descri ption. Generi c descri ptions a re avail able in the SCPI 19 95 Comm and Refer ence, i tems 21.8.4 to 2 1.8.11. For mo re det ailed inf ormatio n in t he 81110A error . Send " :SYST: WARN:ST R?" . Alternati vely , the HELP key[...]

80 Programming Reference SCPI Instrument Command List Description In q uery form , this c ommand reads the l ast key pressed. The buffer is emptie d by *RST and retur ns the value –1 when em pty . In set form , the comman d simulates pre ssing a key on the front panel. Simul ated ke y press a re also re corded a s the las t key pressed. :SYST: KE[...]

81 Programming Reference SCPI Instrume nt Command List • In remote m ode only th e softkeys b elow the display and the S HIFT (LOCAL ) key ar e active . Becau se the ins trumen t normall y switches to remot e mode when any c omman d is re ceived , incl uding :SYSTe m:KE Y , simulating one of t he other disabled key s has no effect. • If you wan[...]

82 Programming Reference SCPI Instrument Command List Command :S YST :SE C Long :SYSTem:SECurity[:STAT e] Form Set & Query Parameter ON |OFF *RST value OF F Description CAUT ION Do not swit ch on sy stem s ecurit y unle ss yo u are wil ling to erase the instrument settings stored in the instrument. All instrument memories, includ ing the curren[...]

83 Programming Reference SCPI Instrume nt Command List Command :S YST:SE T Long :SYSTem:SET Form Set & Query Parameter Bl ock data *RST value Not ap plicable Description In query f orm, th e comm and rea ds a bloc k of data contai ning the instrument ’ s complete setup . The set-up information in cludes all paramet er and mode settin gs, but [...]

84 Programming Reference SCPI Instrument Command List Command :SYST :W ARN:STR? Long :SYSTem:WARNing:STRing ? Form Query *RST value Not ap plicable Description Use th is command to read all the curr ently act ive warning me ssages. The warnin g messages are concat enated to form a singl e string with a “;” as separator between t he messages. Co[...]

85 Programming Reference SCPI Instrume nt Command List Exam ples T o set u p a trigge red bu rst of 1 6 Sing le Pulses a t Out1, each bu rst trigg ered by a positive edge at the EXT IN PUT : T o set up gated p ulses (S ingle Pu lses at Out1 ), gated b y a posi tive leve l at the EXT INPUT : Command :TRIG:IMP Long :TRIGger:IMPedance Form Set & Q[...]

86 Programming Reference SCPI Instrument Command List Command :TRIG:LEV Long :TRIGger:LEVel Form Set & Query Parameter Num eric Parameter Suffix V with enginee ring prefix es. *RST value 1. 0 V Specified Lim its –10 V to +10 V Description Use this comman d to program the trig gering th reshold o f the CLK- IN connect or . Example T o set t he[...]

87 Programming Reference SCPI Instrume nt Command List Pulse period sources set by :TRIG:S OUR Pulse per iod source :T RIG:SO URce internal osc internal PLL CLK-IN IMMedi ate INTern al[1] INTern al2 EXTern al2[...]

88 Programming Reference SCPI Instrument Command List[...]

89 3 3 Specifications In this chapter you wi ll find th e speci fication s of the Agilent 81101A Pulse Generator . At the end of this ch apte r , “Pulse Parameter Definitions” on page 105 provides detailed info rmation on the d efinition of the pulse para meters used by the instrum ent. NOTE Wa r r a n t e d P e r f o r m a n c e Specif ication[...]

90 Specifications Declar ation of Conformi ty Declaration of Conform ity Manufact urer Agilent T ec hnologies Deutschland GmbH Boeblingen V erification Solutions Herrenberger Str . 130 71034 Bö blingen/Germany W e declare that the syst em: AGILENT 81100 Fam ily of Pulse-/Data Gene rators AGILENT 81110 A 330/ 165 MHz Pulse/Patt ern Generator AGILEN[...]

91 Specifications Agilent 81101A Spec ifications Agilent 81101A Specifications General Environment al Conditions Safety IEC1010 , CSA101 0 Power requirem ents 100–240 V ac, ± 10%, 5 0–60 Hz; 100–120 V ac, ± 10% , 400 Hz Power co nsumption: 300 V A max. Maximum Dimensi ons (H x W x D) 89 mm x 426 mm x 521 m m Operating temperature: 0 ° C t [...]

92 Specifications Agilent 81101A Specifications W eight Net 8.5 kg Single Channel 9.2 kg D ual Ch annel Ship ping 13.8 kg Dual Cha nnel Recalibra tion period 1 yea r reco mmend ed W arranty 3 years standar d Acoustic Noise Emission For ambi ent tem peratur e up to 30 ° C, under nor mal operat ion and at th e typical oper ator posi tion: LpA = 52 d[...]

93 Specifications Agilent 81101A Spec ifications T iming Specification s Period Period can al so be e ntered as freq uency . There a re 2 pe riod gen eration source s availab le: • startable oscilla tor (variable fre quency oscillator VFO) • high -accurac y freq uency g enerato r (P LL) Glitch-free timi ng changes Y ou can sweep your t iming va[...]

94 Specifications Agilent 81101A Specifications Wi d t h Can be ent ered as absolu te width, duty cycle or trailing ed ge delay . Duty cyc le val ues from 0.1% to 95% can be ente red dir ectly . For valu es >95 % press SHIF T and use the Modif y knob. Note that pu lses may be deteriora ted or ski pped due to the inaccurac y of per iod and width.[...]

95 Specifications Agilent 81101A Spec ifications Double Pulse Delay Double pulse delay an d delay are mutually exclusive. Doub le Pulse delay is the delay between the tw o pulses in Double Pu lse mo de. T ransition T imes Measure d between 10% and 90% o f amplitude. Ca n be entered a s leading/ trailing edge or % of width. Double Pulse D elay Agile[...]

96 Specifications Agilent 81101A Specifications Leading an d trailing edges can b e programme d independent ly within the follo wing ra nges ( Maximum ratio 1:20): Level Spec ifications Externa l Load comp ensation For loads ≠ 50 Ω , the actual load imp edance can be ente red to c orrect the output v alues. Level Parameters Agilent 81101A Sourc[...]

97 Specifications Agilent 81101A Spec ifications Level Pa rameter s Level para meters ca n be enter ed as high/l ow level in ter ms of voltag e or curr ent or offs et/a mpli tude . Pulse Performance Clock Sourc es It is possible to sele ct between thr ee clock sour ces, the startable oscillator (VFO) , the internal PLL, or the External Clock. In T [...]

98 Specifications Agilent 81101A Specifications Clock / PLL Reference Input Rear p anel BN C connect or used as: • Exte rnal sy stem cl ock i nput: pu lse fre quency = inp ut freq uency. The inp ut frequ ency ca n be me asured. • 5 MHz or 10 M Hz frequenc y referenc e input for in ternal PLL. Phase Locked Loop (PLL) • Locks ei ther to a n ext[...]

99 Specifications Agilent 81101A Spec ifications External Clo ck • The output pe riod is determine d by the signal a t clock input. Freque ncy a ccuracy can be increased by usi ng a pr ecise ex ternal clock. • Trigger synchr onously to externa l clock: the out put period is synchr onous to the signa l at cloc k inpu t. The signa l at the E xter[...]

100 Specifications Agilent 81101A Specifications T rigger Modes Continuous Generate co ntinuous pu lses, double pulses, or bursts. Exte rnal ly T rigge red Each activ e input transition (risin g, falling or bo th) triggers a single pulse, a doub le pulse, or a b urst. The tri gger sour ce can be selec ted fro m: • Exte rnal Inpu t • MAN Trigger[...]

101 Specifications Agilent 81101A Spec ifications T rigger and Strobe Specifications T rigger Output Strobe Out put T rigger Output Sp ecifications Agilent 81101A Level: TTL or ECL sel ectable Output impeda nce: 50 Ω typical T rigger pulse wi dth: typically 50% of period T rigg ered mode: 9 ns typical ly External Width mode: recovered pulse shape[...]

102 Specifications Agilent 81101A Specifications T ypi ca l Delay s Mode f rom to typ. value Extern al W idth Ext Input Strob e/T rigge r Out OUTPUT 8.5 ns 22.5 ns T rigger Gat ed Ext Inpu t Strobe/T ri gger Out OUTPUT 12.0 ns 29.0 ns Conti nuous St robe/ T rigger Out OUTPUT 17.0 ns Ext . clock sign al as pulse pe riod CLK- IN Strobe/T rigger O ut [...]

103 Specifications Agilent 81101A Spec ifications Human Int erface Overprog ramming Parame ter val ues can be entered exceedi ng the spec ified r ange. W arnings and Errors W arnin g messages indi cate pote ntially conf licting par ameters due t o accur acy toleran ces. Erro r messages indicat e conflicti ng para meters . Help K ey Displ ays a cont[...]

104 Specifications Agilent 81101A Specifications Remote Control Operate s accord ing to IE EE standar d 488.2, 1987 and S CPI 1992.0 . Func tion C ode SH1, AH1, T 6, L4, SR1, RL1, P P0, DC1, DT 1,C0. Programming T imes (all checks and disp lay off). Command T ypica l execut ion ti me One param eter or mode 30 ms typ. Recall Setti ng 250 ms typ[...]

105 Specifications Pulse Parameter Definiti ons Pulse Parameter Definitions Here you f ind th e pul se par amet er def init ions o f term s used in th e instru ment spec ificat ions . In t he fo llow ing fi gure a gra phica l ov erview of the pulse par ameters is pr ovided: Pulse Delay Del ay B Interchannel Del ay Ske w Double Pulse Output Channel [...]

106 Specifications Pulse Paramete r Definitions T ime R eference Point The time r eference po int is at the median of the a mplitude (50% amplit ude p oint on p ulse ed ge): Pulse Period The ti me inter val betwee n the l eading e dge medi ans of con secutive output p ulses: T rigger Delay Interv al betwe en trigg er point of the extern al trigge r[...]

107 Specifications Pulse Parameter Definiti ons practice, st art points may shift wit h changes in tran sition time ) when transition times are varied. This is mor e convenie nt for program ming and the width dis play is easy to int erpret . Pulse Delay Interva l between leading edge medi ans of trigger out put pulse and out put pulse: The spe cifi[...]

108 Specifications Pulse Paramete r Definitions T ransition T ime Interv al between the 10% and 90% a mplitu de points o n the lea ding/ trailing edge : Linearity Peak d eviation o f an ed ge from a st raight line th rough th e 10% and 90% amplitud e points, ex pressed as per centage of pulse amplitud e: T ransition Ti m e 10 % Amplitude 90 % Ampli[...]

109 Specifications Pulse Parameter Definiti ons Jitte r Short-term inst ability of one ed ge relative to a refer ence edge. Usually specif ied as rms val ue, whic h is on e standar d deviatio n or “ sigma”. If distribution is assumed Gaussian, six sigma represents 99.74% of the peak-peak jitter . The re ference edge for period jitter is the pre[...]

110 Specifications Pulse Paramete r Definitions Preshoot, Ov ershoot, R inging Preshoo t and overshoot ar e peak distor tions precedin g/follow ing an edge. Rin ging is the positive-pe ak and nega tive-p eak distort ion, excludin g overshoot , on pulse top o r base. For examp le, a combin ed preshoot , overshoot, and rin ging spec ification of 5% i[...]

111 Specifications Pulse Parameter Definiti ons Repeat ability When an i nstrument operate s under th e same e nvironmen tal co ndition s and with the same settings, the value of a parame ter will lie withi n a band inside the accuracy w indow . Repeatabilit y defines the width of this band . Repeatability Band Accuracy Window[...]

112 Specifications Pulse Paramete r Definitions[...]

113 Index Symbols % of Per 57 , 58 A Acoustic Noise Emission 92 Amplitude curren t 48 definition 109 voltage 70 B Burst length 84 mode 84 C Cert ifica tion met sp ecificat ions 5 Clear Error Queue 76 Clear Status 76 CLK-IN impedance 85 slope 86 threshold 86 Command Lis t 26 Common Comm ands 18 Condition Regi ster 20 Continuous Mode 43 Current Limit[...]

114 Index J Jitter definition 109 K Key-Code Re ference 80 L Last Key Pres sed 79 Leading Ed ge comma nd 65 definition 108 Linearity definition 108 List of Commands 26 Load File in to me mory ’n ’ 46 Load Impedance 47 Low Level current 51 current limit 53 definition 109 voltage 73 voltage limi t 74 M Memory Card catalog/ DIR 44 change directo r[...]

115 Index S Safety symbols 8 SCPI Command Dictionary 38 Versio n 83 Setting loa d int o memor y ’n’ 46 Settling Time definition 110 Simulatin g Key Presse s 79 Skew definition 107 Specifications 89 CLK-I N 98 delay 94 double pulse delay 95 external c lock 99 general 91 memor y car d 103 output modes 99 Period 93 PLL 98 PLL REF 98 pulse performa[...]

116 Index[...]

7 4 8 9 5 6 123 O . +/- nano micro Mega milli kilo ENTER MAN STORE HELP SHIFT DATA ENTRY CURSOR/ DIGIT MODIFY LOCAL AUTOSET RECALL PERIOD DELAY WIDTH LEAD TRAIL HIGH LO W ON | OFF KNOB CURSOR Keys ENTER & UNIT Keys DATA ENTRY / QUICK ACCESS Keys Special FUNCTION Keys Front Panel Controls[...]

Copyright Agilen t T ech nologies 1998 , 2000 Edition E0300 Printed in Germany 81101-9102 1[...]

MANUAL CHANGES September, 01 Manual for Model Number 81101A Manual printed on März 2000 E0300 Manual Part Number 81101-91021 5 September, 2001 Page 1 of 4 Make all ERRATA corrections. Check the following table for your instrument serial prefix/serial number/EDC and make the listed changes to your manual New Item Serial Prefix or Manual Serial Numb[...]

MODEL 81101A ____________________________________________________________________ __________________________________________________________________________________ 05.09.01 Page 2 of 4 ERRATA Page 91, Power consumption: 170VA max. Page 92 , Specifications change to read: Recalibration period 3 years recommended Page 93, Timing Specifications add: [...]

MODEL 81101A ____________________________________________________________________ __________________________________________________________________________________ 05.09.01 Page 3 of 4 INDEX OF MANUAL CHANGE MANUAL CHANGE FRAME ERRATA 1 See attached Declaration of Conformity[...]

MODEL 81101A ____________________________________________________________________ __________________________________________________________________________________ 05.09.01 Page 4 of 4 MANUAL CHANGE 1 On page 90, Specifications change to read: See attached Declarations of Conformity[...]

DECLA RA TION OF CONFORMITY According to ISO /IEC G uide 22 and CEN/CENELEC EN 45014 Revision: C I ssue Date: 2001-May -02 Manufactur er’s Name: Agilent Technol ogie s Deutschland Gm bH Manufactur er’s A ddress: Boeblingen Ver ificati ons Solut ions (BVS) Herrenber ger Str. 130 D-71034 B oebli ngen Declares, that the prod uct Pro duct Name: Fam[...]