Agilent Technologies 54754a manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    Agilent 5475 3A and 54754A TDR Plug-in Modules Programmer’ s Quick Refe rence[...]

  • Page 2

    ii Notices © Agilen t T echnologie s, Inc. 2 000-20 04 No pa rt of t his man ual ma y be r epro- duced in any form or by any means (including electronic stor age and retrieval or translation into a foreign lan- guage ) witho ut pri or agre emen t and wr it- ten consent from Ag ilent T echnologies, Inc. as governed by U nited States and inte rnat i[...]

  • Page 3

    iii Introduc tion Introduction 54750A/8 3480A Mai nfram es For control ling 5475 3A and 54754A TDR plug -in mod ules that are ins talled in a 54750A or 834 80A mainfram es, refer to th e following books : • Thi s manua l, the 54753 A and 54754A TDR Pl ug-in Modules Programmer’s Quick Reference • 54753A and 54754A Pr ogrammer’s Gui de for de[...]

  • Page 4

    iv Introduct ion [ ] Squa re brack ets indicat e that the en clos ed items a re option al. { } When s everal items are e nclosed by braces, o ne, and only one of these elemen ts may be s elected. Definitions d ::= A si ngle ASCII n umeric cha rac ter , 0-9 . n ::= A si ngle AS CII non-ze ro, numeri c cha racter , 1-9. <NL> ::= Newl ine or Lin[...]

  • Page 5

    Contents Root Level Com mand s 4 Acqu ire Comman ds 7 Calib rate C om mand s 8 Channel Commands 9 Disk Com mand s 11 Disp lay Comm and s 12 Function Commands 13 Hi s to g r a m C o mm a n d s 1 9 L i mi t T es t C o m ma n d s 2 0 Mar ker C om man ds 21 Mask Test C omm ands 2 3 Measure Commands 25 TDR Commands 37 Waveform Commands 41 Waveform Memor[...]

  • Page 6

    Root Leve l Commands Command :BLA Nk {CH ANne l<nu mber > | WMEM ory< numb er> | FUNC tion <nu mber > | FFT | RE SPon se<num ber> | HIST ogra m | PMEM ory1 } Tur ns off an ac tiv e chann e l, funct ion, wa vefo rm memo ry, pixe l memor y, F FT, hist ogr am, or TD R respo nse. The V IEW co mmand t urn s them on. <number>[...]

  • Page 7

    Command :DIG itiz e [<wa vefo rm_n ame> ][,< wave form _nam e>] Invokes a special mode of data acquisition that is more efficient than using the RUN co mmand . Th is com man d in itia lizes the selec ted chan nels , functions, responses, or FFT to “unacquired,” then acquires them according to t he current instru me nt s ettin gs. Wh[...]

  • Page 8

    Command :STO Re:W AVEf orm {C HANn el<n umbe r> | FUN Ct io n< nu mb er > | WMEM or y< nu mb er > | HI ST ogra m | FFT | RE SPon se<n umbe r>}, {WME Mory <num ber> } Copi es a c han nel, f unc tion , sto red wa vefo rm, hist ogram , TD R respo nse, or FFT to a wavefo rm me mory . The fir st para met ers s pecif ies t h[...]

  • Page 9

    Acquire Commands Command :ACQ uire :BES T[?] {TH Rupu t | FLATne ss} Wh en avera gin g is enab led wit h ACQuire: AVERage, the FLAT ness opt ion impr ov es the ste p flat ness by usin g a signal pr ocess ing algori thm w ithi n the inst rument . Yo u sho uld us e this op t ion whe n perfo rming TDR mea surem ents or when s tep flatness i s importan[...]

  • Page 10

    Cali bra te C ommands Command :CAL ibra te:S AMPl ers[ ?] {DI Sabl e | ENAB le} Enab les or d isables the samp le rs in the plu g-in. 8[...]

  • Page 11

    Channel Commands Command :CHA Nnel <num ber> :OFF Set[ ?] < offs et_v alue > For TDR an d TDT app licat ion s, you may change the offs et to magn ify of fset in som e circu ms tances . This com m and is used t o set the ma gni fy off set as well as the of fset. <number> An in t eg er, 1-4 , indi cating the slot in wh ich the chan [...]

  • Page 12

    Command :CHA Nnel <num ber> :TDR Skew <pe rcen t> [ %] This co mmand set s the TD R skew fo r the given chann el. The TD R skew cont rol mo ves th e TDR st ep re lative t o the tr igger po sition. The contro l may be se t fro m - 100 to 100 pe rcen t of t he al lowab le range. This co mmand is only app licab le to TD R cha nnels . <n[...]

  • Page 13

    Disk Commands Command :DI SK :L OA D "< fi le name >" , <s ou rc e> Loads a setup, waveform, datab ase, mask, TDR/TDT calibration, or pixel memory from the disk. The filename does not include a suffix. The suffix supplied by the instrument depends on the source and fil e format specified. The T DRTD T op tion is a fil e type c[...]

  • Page 14

    Displ ay Commands Command :DIS Play :ASS ign[ ?] { CHAN nel< numb er> | FUN Ct io n< nu mb er > | RESP on se <n um be r> | WMEM ory< numb er> | FF T},{ UPPe r | LOWe r} Assign s the spec ifi ed cha nnel , wav efo rm, func tion , TDR resp onse , or F FT to a par ticu lar por tion of t he wavefo rm are a on th e scr een. This [...]

  • Page 15

    Function Commands Command :FUN Ctio n{1 | 2} :ADD <so urce >[,<so urce >] Defines a functio n that takes the alge braic sum of two defined operands. <source> {CH AN ne l< nu mb er > | FUNC ti on <n um be r> | RES Po ns e< nu mb er > | WMEM or y< nu mb er > | <flo at_v alue >} <number> For chann [...]

  • Page 16

    Command :FUN Ctio n{1 | 2} :DIF Fere ntia te {CH ANne l<nu mber > | FUN Ct io n< nu mb er > | RESP on se <n um be r> | WMEM ory< numb er> | <f loat _val ue>} Computes the dis crete derivative of the defined operand’s waveform. <number> For chann els: an int eger, 1 thro ugh 4, ind icating the slo t in wh ich th[...]

  • Page 17

    Command :FUN Ctio n{1 | 2} :INT egra te {CH ANne l<nu mber > | FUN Ct io n< nu mb er > | RESP on se <n um be r> | WMEM ory< numb er> | <f loat _val ue>} Defines a function that computes the i ntegral of the defined operand’s waveform. <number> For chann els: an int eger, 1 thro ugh 4, ind icating the slo t in w[...]

  • Page 18

    <number> For chann els: an int eger, 1 thro ugh 4, ind icating the slo t in wh ich the chan nel resi des, foll owed by an o ptio nal A or B iden tifyi ng which o f tw o poss ible cha nnels in th e slot is b eing r eference d. For f unctio ns: 1. For wa vefo rm mem ories ( WMEM ory ) : 1, 2, 3, or 4. Fo r TD R respo nses: 1 , 2, 3 , or 4. <[...]

  • Page 19

    Command :FUN Ctio n{1 | 2} :MUL Tipl y <sou rce> [,<s ourc e>] Defines a function that alg ebraically multipli es the fi rst operand by the second operand. <source> {CH AN ne l< nu mb er > | FUNC ti on <n um be r> | RES Po ns e< nu mb er > | WMEM or y< nu mb er > | <flo at_v alue >} <number> For[...]

  • Page 20

    Command :FUN Ctio n{1 | 2} :VER Sus <s ourc e>[, <sou rce> ] Defines a function for an X- versus-Y display . The fi rst operand defines the Y axis and the se cond defines the X axis . The Y-axi s range and offset are init ially equa l to that of the first o pera nd an d can b e ad just ed wi t h th e RANGE and OFFSET commands. <sourc[...]

  • Page 21

    Histogram Co mmands Command :HIS Togr am:W INDo w:SO URce [?] {C HANn el<n umbe r> | FUN Ct io n< nu mb er > | RESP on se <n um be r> | WMEM ory< numb er> | FF T} Sele cts the source of the hist ogram windo w. Th e histo gram w indow w ill tra ck the source’s vertical and horizontal scal e. <number> For chann els: an[...]

  • Page 22

    Limit Test Commands Command :LTE St:S WAVe form [?] <sou rce> ,<de stin atio n>,[ ,<fi lena me>[ ,<fo rmat >]] Sav es wa vefor m s fro m a chan ne l, func tio n, histo gram, TDR re spons e, or wav efo rm me mory in the e vent of a failu re d etected b y the lim it test. Each wave fo rm sou rce can be indiv id ually specif ie[...]

  • Page 23

    Marker Commands Command :MAR Ker: MODE [?] {O FF | MAN ual | WA Vefo rm | MEAS urem ent | HI STog ram | TD RTDT } Set s the ma rk er m ode. Command :MA RK er :P RO Pa ga tion [? ] {D IE Le ct ri c | ME Ter | FE ET } <pro pa ga ti on > Sets the propagat ion velocity fo r TDR and TDT measurements. T he propagation may be specified as a dielectr[...]

  • Page 24

    Command :MAR Ker: X1Y1 sour ce[? ] {CHA Nnel <num ber> | FUN Ct io n< nu mb er > | RESP on se <n um be r> | WMEM ory< numb er> | HI STog ram | FF T} Sets the source for the X1 and Y1 markers . <number> For chann els: an int eger, 1 thro ugh 4, ind icating the slo t in wh ich the chan nel resi des, foll owed by an o pti[...]

  • Page 25

    Mas k Tes t C omm ands Command :MTE St:A MASk :SOU Rce[ ?] { CHAN nel< numb er> | FUN Ct io n< nu mb er > | RESP on se <n um be r> | WMEM ory< numb er> | FF T} Sele cts the sou rce for the inte rpretat ion of the AM ASk:XDEL ta and AMASk :YDELt a par ame t ers when A MASk:UN ITs is set t o CURR ent . When UNITs are CURRent, [...]

  • Page 26

    <number> For chann els: an int eger, 1 thro ugh 4, ind icating the slo t in wh ich the chan nel resi des, foll owed by an o ptio nal A or B iden tifyi ng which o f tw o poss ible cha nnels in the slot is being refer ence d. For fun ctio ns: 1 o r 2. For wavef orm mem ories ( WMEM ory ) : 1, 2, 3, or 4. Fo r TD R respo nses: 1 , 2, 3 , or 4. &[...]

  • Page 27

    Mea sur e C omman ds Command :MEA Sure :DEL Tati me[? ] [<so urce >[,< sour ce>] ] Measu res th e del ta time betwe en tw o edges. If one so urce i s spe cified, the delt a time from th e leadin g edge of the specif ied source o t the trail ing ed ge of the specified source is measured. If two sources are specified, the delta time from [...]

  • Page 28

    Command :MEA Sure :FAL Ltim e[?] [<s ourc e>] Measures the time at the upper threshold o f the fa lling edge , me asur es the tim e at t he low er th resho ld of th e fall ing edge, then calcula tes the fal l time. <source> {CH AN ne l< nu mb er > | FUNC ti on <n um be r> | RES Po ns e< nu mb er > | WMEM or y< nu mb[...]

  • Page 29

    Command :MEA Sure :NWI DTh[ ?] [ <sou rce> ] Measures the width of t he first negati ve pulse o n the screen usi ng the mid- thres hold lev els o f the wav efo rm (50 % level s wit h sta nda rd meas urement s selected ). <source> {CH AN ne l< nu mb er > | FUNC ti on <n um be r> | RES Po ns e< nu mb er > | WMEM or y<[...]

  • Page 30

    <number> For chann els: an int eger, 1 thro ugh 4, ind icating the slo t in wh ich the chan nel resi des, foll owed by an o ptio nal A or B iden tifyi ng which o f tw o poss ible cha nnels in the slot is being refer ence d. For fun ctio ns: 1 o r 2. For wavef orm mem ories ( WMEM ory ) : 1, 2, 3, or 4. Fo r TD R respo nses: 1 , 2, 3 , or 4. C[...]

  • Page 31

    Command :MEA Sure :RIS etim e[?] [<s ourc e>] Measu res t he ris e time of th e fi rst d isplay ed edg e by me asur ing the time at the lower threshold of t he rising edge, measuring the t ime at the uppe r threshold o f the risi ng edge, then cal culating t he rise time. <source> {CH AN ne l< nu mb er > | FUNC ti on <n um be r[...]

  • Page 32

    Command :MEA SURE :TED ge[? ] <mea s_th res_ txt> , <slo pe>< occu rren ce>[ ,<so urce >] Measur es t he time i nte rval bet ween t he trigg er event and t he sp ecified thre shol d leve l and t ransit ion . <meas_thres_ txt> {UPP er | MID Dle | LO Wer} <slope> {- ( minus ) f or fal ling | + (p lus) (o ption al) [...]

  • Page 33

    Command :MEA Sure :TMI N[?] [<s ourc e>] Measures the time at which the fi rst minimum voltage of the source wave for m oc cur red. Wh en FFT is the speci fied sour ce, the fr equen cy at whic h th e fir st min im um valu e occur re d is measur ed . <source> {CH AN ne l< nu mb er > | FUNC ti on <n um be r> | RES Po ns e< [...]

  • Page 34

    Command :MEA Sure :VAM Plit ude[ ?] [ <sou rce> ] Calculates the difference bet ween the top and base volt age of the spe cified sou rce. <source> {CH AN ne l< nu mb er > | FUNC ti on <n um be r> | RES Po ns e< nu mb er > | WMEM or y< nu mb er >} <number> For chann els: an int eger, 1 thro ugh 4, ind icatin[...]

  • Page 35

    Command :MEA Sure :VLO Wer[ ?] [ <sou rce> ] Measures the voltage value at the lower threshold of the waveform. <source> {CH AN ne l< nu mb er > | FUNC ti on <n um be r> | RES Po ns e< nu mb er > | WMEM or y< nu mb er >} <number> For chann els: an int eger, 1 thro ugh 4, ind icating the slo t in wh ich the [...]

  • Page 36

    Command :MEA Sure :VMI N[?] [<s ourc e>] Measu res th e abso lute min im um vo ltage pre sent on the sele cted sou rce wave fo rm. Wh en FF T is the speci fied s ource , the minim um val ue in the spect rum i s measu red. <source> {CH AN ne l< nu mb er > | FUNC ti on <n um be r> | RES Po ns e< nu mb er > | WMEM or y<[...]

  • Page 37

    Command :MEA Sure :VRM S[?] {CY CLe | DI SPlay} , {AC | DC } [,<s ourc e>] Measu re s th e RMS vo lta ge of th e selec ted wavefo rm by su btrac tin g the average value of the waveform from each data point on the display. <source> {CH AN ne l< nu mb er > | FUNC ti on <n um be r> | RES Po ns e< nu mb er > | WMEM or y<[...]

  • Page 38

    Command :MEA Sure :VTO P[?] [<s ourc e>] Measu res th e stati stica l top o f the se lected so urce wave form. <source> {CH AN ne l< nu mb er > | FUNC ti on <n um be r> | RES Po ns e< nu mb er > | WMEM or y< nu mb er >} <number> For chann els: an int eger, 1 thro ugh 4, ind icating the slo t in wh ich the c[...]

  • Page 39

    TD R Co mman ds Command :TD R{ 2 | 4} :R ES Po ns e{1 | 2 | 3 | 4} :C AL ib ra te Begins a TDR or TD T normalization and re ference plane cal ibration. Which calibratio n is done (TDR or TDT) depe nds on the se tting of the TDRTDT control. Command :TD R{ 2 | 4} :R ES Po ns e{1 | 2 | 3 | 4} :C AL ib ra te :CAN Cel Activates the cancel softkey duri n[...]

  • Page 40

    Command :TDR {2 | 4}: RATE [?] {A UTO | <r ate> } Set s th e peri od of the TD R pulse gene rato r. Yo u sho uld usu al ly leave this set to AUTO unle ss you nee d to define a s pecific rate. In A UTO, the ins trument will attempt to keep subseq uent per iods o ff screen wh en the tim ebase is changed. <rate> Per iod to wh ich you want [...]

  • Page 41

    Command :TD R{ 2 | 4} :R ES Po ns e{1 | 2 | 3 | 4} :R IS et im e[ ?] <ris etim e> Set s th e riseti me for the no rmaliz ed r espo nse. The risetim e sett ing is li mited by t he timeb ase setti ngs and the record lengt h. <risetime> Riseti me setting in se conds. Command :TD R{ 2 | 4} :R ES Po ns e{1 | 2 | 3 | 4} :T DR De st [? ] CHAN [...]

  • Page 42

    Command :TD R{ 2 | 4} :R ES Po ns e{1 | 2 | 3 | 4} :V ER Ti ca l[ ?] {TSO urce | M ANua l} Specifies whether the TDR/TDT response should track the source channel ’s vert ical scale (T SOu rce), o r use a user- defined scale specifi ed with t he VER Tical:O FFS et and VERT ical:RA N Ge c om mand s (M ANual) . TSOu rce is the usual setting. Command[...]

  • Page 43

    Wavefor m Commands Command :WAV efor m:SO URce [?] {C HANn el<n umbe r> | FUN Ct io n< nu mb er > | RESP on se <n um be r> | WMEM ory< numb er> | DA Taba se | HIS Togr am | FFT } Selects a channel, function, TDR response, waveform memo ry, database, hist o g ram, o r FF T as t he wave for m s ource. <number> For chann [...]

  • Page 44

    Wavefor m Memor y Co mmands Command :WME Mory <num ber> :SAV E {CHA Nnel <num ber> | FUN Ct io n< nu mb er > | RESP on se <n um be r> | WMEM ory< numb er> | HI STog ram | FF T} Sto res th e spec ifi c chan nel, wav efo rm me mory , funct ion, hist ogra m, or FFT to t he wavefo rm m emo ry. <number> For chann els:[...]