Agilent TechnologiesメーカーE1445Aの使用説明書/サービス説明書
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Agilent 75000 SERIES C Agilent E1445A Arbitrary Function Generator Servi ce Manu al Seri al Numbers This manua l a ppli es dir ectl y to ins trume nt s w ith se r ia l num be r s prefixed with 31 44A. Copyr igh t© Ag ilen t Techn olo gies , Inc . 1992- 2005 Ma nu al Par t Numb er: E144 5-9 00 11 Prin te d: Nov emb er 2005 Editio n 2 Print ed in U.
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Contents Cha pt er 1 - Gen eral In fo rmat ion Intr oduct ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Safet y Con sid erati ons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Warni ngs an d Caut ions .
Chap te r 3 - A d jus tme n ts Intr oduct ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Requ ired Eq uip ment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Recomm en ded En vir onment .
Ce rtif ic ati o n Agile nt T echno logies cer tifi es tha t this pr oduct m et it s pu blishe d spec ificatio ns at th e time of ship ment from the f acto ry.
F ra m e or chass is gro und t er mi nal — ty pi - cally c onn ects to the equ ipment’ s metal frame . Alter nati ng c urr ent ( AC). Dire ct cu r re nt (D C) . Indi ca tes ha za rd ous volta ge s. Ca lls atte nt i on to a pr oce dur e, pr ac tic e, or condi t ion t hat co ul d ca use bodi ly i nj ury or deat h.
DECLARATION OF CONFORMITY According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014 Revision: B.01 Issue Date: 1 June 2001 Document E1445A.DOC Manufacturer’s Name: Agilent Technologies, Incorporated Manufacturer’s Address: 815 – 14 th St.
Notes 6 Agi le nt E1 44 5A Se rv i ce M an ua l.
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Chapter 1 Genera l Informati on Introduction This manu al co nta i ns in fo rm a ti on r eq uir e d to te st, trou ble sh oot , and r e pa ir the Agi lent E144 5A C-Size VXI Arbit rary Fu nc ti on Ge ne rat or (AFG). See th e Ag il en t E14 45A User’ s Man ual for addi ti onal i nforma ti on.
Safe ty Considerations This product is a Safety Cl ass I i nst ru me nt tha t i s pr ovi de d wit h a prote ct iv e earth t ermin al whe n insta lle d in t he m ainf rame .
WARNI NG USING AUTOTRANSFORMERS. If t he mainframe is to be en er g ized vi a an a u tot r an sf or m er ( for volta ge reduc t io n) ma ke sure t he common terminal is connected to neutral (that is, the grounde d sid e of the ma in’s s upply). CAPACITOR VOLTAG ES.
Inspection/ Shipping This se ct io n desc ribe s in it ia l ( in comi ng) ins pect io n an d shi ppi ng gui de li nes fo r t he AF G . Initi al Insp e ctio n Use the st ep s in F igu re 1-2 a s gui deli nes to pe r for m in it ia l i nspec ti on of the AFG.
Shippi ng Gui de lin es Fo ll ow the st eps in F igu re 1-3 to retu rn the AFG to an Agile nt Tech nol ogi es Sales and Supp ort Offic e or Servi ce Cente r. * We r ecom mend th at y ou us e t he sam e sh i ppi ng m ate rial s as th os e us ed in f ac tor y pa ckag ing (av ail able f rom Ag il en t T ech n ologie s).
Environment The rec omm e nde d ope r atin g environm ent for the Agilent E144 5A AFG i s: Environment Temperature Humidity Operating 0 o C t o +55 o C <65% rel ative (0 o C to +40 o C) Storage and.
Recommended Test Equipment Table 1- 1 li sts the te st eq uipment rec omm ended for testi ng, adju sting, an d ser vici ng the AF G. Es sentia l req uiremen ts f or eac h piece o f tes t equi pment are desc ribe d in the Re qui re me nts colum n. Table 1-1.
16 Gen eral Inf ormatio n Agile nt E14 45A S ervic e Manua l.
Chapter 2 Verification Tests Introduction The thre e leve ls of test pro c edu res de scribed in this cha pte r are used to verify tha t the Agil en t E1445 A: • is fully func ti onal (Fu nc tion a .
Comma nd Co upling Many of the AFG SCPI comm ands are value- coupl ed. In or der to prev ent "Se tti ngs Conflict" e rror s, co uple d c om mands must be sent con tigu ously by placing them in th e sam e prog r am line , or by suppre ssi ng the end-of- line termin ator.
Func tion al Veri fi cati on : Se lf-T est Descripti on The AF G self-t est p erforms the fo llowi ng intern al c hecks: • interna l int e rrupt line s • wave form sele ct RAM • segm ent se quen.
Fu nc tion al Veri fica tion : Ref I n/M ark er Ou t Test Descripti on The pur pos e of thi s te st is to chec k the Re f /S a mpl e In and Ma r ke r Ou t por ts. An ex te r na l ref e renc e is c onne c te d to th e Ref/Samp le In port and sen t to the Mark er Ou t port.
Func tion al Veri fi cat ion: St art A rm I n Test Descripti on The p urpo se of t his t est is to check t he St ar t Arm In por t. Th e "T RIG OUT " port of the Co mman d Mod ule is used to send a S ta r t Arm sign a l to the A FG. Te st P roc edur e 1.
Fun ctio nal V erific atio n: Star t Ar m In Te st (con t’d ) Te st P roc edur e (c ont’ d) 4. Set up the AFG to outpu t a 1 MHz sine w av e, with an exte r n a l S ta rt Arm so urce: FREQ 1E 6; Se t fr e q to 1 M H z :V OLT 4VP P Set AFG am pl it ude ARM :LAY 2 :SOU R EXT External St ar t Arm sourc e IN IT :IMM I nit ia te 5.
Func tion al Veri fica ti on: Gat e In Test Descripti on The pur pos e of thi s te st is to chec k the ga tin g f unc tion . The "TRIG OU T " port of the Co mmand Mod ule is used to gat e th e ou tput . Te st P roc edur e 1. Reset th e AFG: *RST;*CLS Reset AFG an d cl ear statu s registe rs 2.
Func tion al Veri fica tion : Gate In Te st ( cont’ d) Te st P roc edur e (c ont’ d) 4. Se t up t h e A F G t o ou t p ut a 1 MHz sin e wa ve wi th a n ex te rn al g at e sour ce: TR IG: GATE : SO.
Func tion al Veri fica tion : Outpu t Rel ay T est Descripti on The purpos e of thi s te st is to check the out put r e la y. Te st P roc edur e 1. Reset th e AFG: *RST;*CLS Reset AFG an d cl ear statu s registe rs 2. Set up eq uipm e nt a s shown in Figur e 2-4 : 3.
Func tion al Veri fi cati on Ex am ple P r og ram This pro gram perform s the Func tional Verif ic a tion Test s fo r th e AF G . An Agi lent E140 5/E1 4 06 Comm an d Mo dule is r e quire d f o r this te st .
Func tion al Veri fi cati on Exam pl e Pr og ram (co nt ’d) 450 !---------- Su bpr ogr am s ---------- 460 SUB Re set_afg 470 COM @Afg,@Cm d_mod,INT EGER Don e 480 OUTP UT @A fg ;"* RS T; *CLS&.
Func tion al Veri fi cati on Exam pl e Pr og ram (co nt ’d) 890 Reset_af g 900 ! 910 CLEAR SCREEN 920 PRINT "REF IN/MARKER OUT TEST" 930 P RINT 940 ! 950 !Test conne ctions 960 PRINT "Conn ect Scope to ’M arker Out ’ on the E 144 5A.
Func tion al Veri fi cati on Exam pl e Pr og ram (co nt ’d) 1340 PRI NT "Ve rif y th at no signal app ears on the sco pe. " 1350 PRIN T "Press ’Continu e’ to se nd a STA RT A RM .
Func tion al Veri fi cati on Exam pl e Pr og ram (co nt ’d) 1760 REPEAT 1770 OUTP UT @ C md_m od; " O UTP :E XT: LE V 1" 1780 WAIT 1 1790 OUTP UT @ C md_m od; " O UTP :E XT: LE V 0&qu.
Func tion al Veri fi cati on Exam pl e Pr og ram (co nt ’d) 2140 SUB Key _press 2150 COM @Afg, @ Cm d_m od , INTEG ER Don e 2160 Done =1 2170 DISP 2180 SUBEN D 2190 ! 2200 SUB W ai t _for_ cont 2210.
O p er at i o n Verification Operation Veri ficati on is a subset of th e Pe rform a nce Ve rifi cati on te sts that follow. For the AF G , Op era tio n Verifica tio n c o nsis ts of the follow i ng t.
Test 2-1: DC Zer os Descripti on The pur pos e of thi s te st is to verify th at the AFG me e ts it s specificat ions for DCV acc uracy for an outp ut of zer o volt s. An ar bit rar y wavefo rm consi stin g of zer os is us e d. The am pli tude is varied in or de r to te st e a ch atte nuato r.
Test 2-1: DC Zer os (cont’ d) Te st P roc edur e (c ont’ d) 3. Cr eat e a user-def ined wavefo rm made up of zeros: LIST: SEG M: SEL ZE R OS Select segm ent name LIST: SEGM: DEF 8 # of segme nt po.
Test 2-1: DC Zer os (cont’ d) Te st P roc edur e (c ont’ d) Table 2- 1. DC Zero s Test P oints Attenuation (d B) Ampl itud e (vo l ts ) Filter Test Limits (vo l ts ) 0 .99 1 2 4 8 13 14 30 10.23750 9.13469 9.12416 8.13192 6.45941 4.07560 2.29187 2.
Test 2-1: DC Zer os (cont’ d) Ex am ple P r og ram This pro gr am pe rform s the DC Zeros test. An arbit r ary wave fo rm, con sist ing of z eros , is use d with va riou s amp lit u de s to test a variet y of atten ua tor an d filt er combin at ion s .
Test 2-1: DC Zer os (cont’ d) Exam pl e Pr og ram (co nt ’d) 440 PRINT 460 FOR Filter=0 TO 2 470 S ELECT Filt er 480 CASE 0 !No filter 490 OUT PUT @Afg ;"OUTP: FILT OFF" 500 F il ter$=&q.
Test 2-2: DC Ac curacy Descripti on The pur pos e of thi s te st is to verify th at the AFG me e ts it s specificat ions for DC acc uracy . Equi p men t Setu p • Conne c t equipm ent as shown in Figur e 2-5 • Set DMM to DCV, aut o ra nge Te st P roc edur e 1.
Test 2-2: DC Ac curacy (co nt ’d) Te st P roc edur e (c ont’ d) Table 2- 2. DC Accu racy Test Points Amplitude (volts ) Filter Test L imits (vo l ts ) 10.2375 5.0 0.0 -5. 0 -10.24 10.2375 -10.24 10.2375 -10.24 None None None None None 250 kHz 250 kHz 10 MHz 10 MHz 10.
Test 2-2: DC Ac curacy (co nt ’d) Exam pl e Pr og ram (co nt ’d) 270 !--- ---- -- - Set u p A F G ---- -- ---- 280 OUTPUT @Af g; "*RST" !R eset AFG 290 WAIT .
Test 2-3: DC O ffset Descripti on The pur pos e of thi s te st is to verify th at the AFG me e ts it s specificat ions for DC o ffset ac cu racy. Equi p men t Setu p • Conne c t equipm ent as shown in Figur e 2-5 • Set DMM to DCV, aut o ra nge Te st P roc edur e 1.
Test 2-3: DC O ffset (c on t’d ) Te st P roc edur e (c ont’ d) Perform st e ps 5 - 7 for e ac h o ffset li sted in Table 2- 3: 5. If neces sary, chan ge t he AFG ou tput am pli tude : VOLT:OFFS 0; Se t o f fset to 0 :V OLT <amplit ude> Set ampl it ude where <amp litude > is t he v alue s peci fied in Tabl e 2-3 .
Test 2-3: DC O ffset (c on t’d ) Ex am ple P r og ram This pro gram perform s the DC Off set Test . 10! RE-STORE " DC_OFFSET" 20 COM @Afg 30 DIM Offs et(1:6 ) 40 ! 50 !- -- -- -- --- S et .
Test 2-3: DC O ffset (c on t’d ) Exam pl e Pr og ram (co nt ’d) 440 FOR I= 1 TO 6 450 IF I<=4 THEN 460 V out= 2.2919 470 ELSE 480 Vout=.407 56 490 E ND IF 500 ! 510 I F Vout <>Vou t _ol d.
Test 2-4: AC Ac curacy Descripti on The pur pos e of thi s te st is to verify th at the AFG me e ts it s specificat ions for AC acc uracy at 1 kHz. Equi p men t Setu p • Conne c t equipm ent as shown in Figur e 2-5 • Set DMM to ACV, aut o ra nge Te st P roc edur e 1.
Test 2-4: AC Ac curacy (co nt ’d) Te st P roc edur e (c ont’ d) 4. Set t he AFG output amp litude : VOLT <amplitude> VR M S Se t amp l i t ud e where <amp litude > is t he v alue s peci fied in Tabl e 2-4 . 5. Tri gger t he DM M and record t he r eadi ng.
Test 2-4: AC Ac curacy (co nt ’d) Ex am ple P r og ram Thi s progra m per forms t he AC Acc uracy T est. 10! RE-STORE "AC_LEVELS" 20 DIM Vout(1:9) ,Fi lter(1 :9 ) 30 ! 40 !- -- -- -- --- S.
Test 2-4: AC Ac curacy (co nt ’d) Exam pl e Pr og ram (co nt ’d) 420 FOR I= 1 TO 9 430 SELECT Filt er(I ) 440 CASE 0 450 OUT PUT @Afg ;"OUTP: FILT OFF" !No filt er 460 F il ter$="NO.
Test 2-5: AC F lat nes s - 250 kHz F ilter Descripti on The pur pos e of thi s te st is to verify th at the AFG me e ts it s specificat ions for AC flatne ss with the 250 kHz filt er e na b le d. Equi p men t Setu p • Conne c t equipm ent as shown in Figur e 2-6 • Set DMM to ACV, aut o ra nge Te st P roc edur e 1.
Test 2-5: AC Flat nes s - 250 kHz F ilter ( con t’d) Te st P roc edur e (c ont’ d) 3. Set t he AFG output to the re ference f requenc y ( 1 kHz ): FREQ 1000 Set freque ncy 4. Measure the am pli t ude with the DMM a nd c onv e rt th e re ad ing to dBm.
Test 2-5: AC Flat nes s - 250 kHz F ilter ( con t’d) Te st P roc edur e (c ont’ d) Table 2-5. AC F latn ess Test P oints - 250 kHz Filt er Freq uen cy (Hz) Test Limits* ± (dB error) Freq uenc y (Hz ) Test Limi ts* ± (dB erro r) 10E3 20E3 30E3 40E3 50E3 60E3 70E3 80E3 90E3 100E3 110E3 120E3 130E3 0.
Test 2-6: AC F lat nes s - 10 MH z Filte r Descripti on The pur pos e of thi s te st is to verify th at the AFG me e ts it s specificat ions for AC flatne ss with the 10 M Hz filt er e na ble d. Equi p men t Setu p • Conne c t equipm ent as shown in Figur e 2-6 • Set DMM to ACV, aut o ra nge Te st P roc edur e 1.
Test 2-6: AC Flat nes s - 10 M Hz Filte r ( cont’d ) Te st P roc edur e (c ont’ d) 7. Set up the Power Me te r: Units - Watts Power Range - aut o Reference Oscillator - O N NOTE Follo w the Pow e r Mete r m an ufactu re r’ s inst ructions for perform i ng an auto ca libr ation and corr e cti ng for the powe r se ns or.
Test 2-6: AC Flat nes s - 10 M Hz Filte r ( cont’d ) Te st P roc edur e (c ont’ d) 10. Ca lc ul at e th e corr ecti on factor th at wi ll be use d to r e fer e nc e th e Pow e r M et er to th e DM.
Test 2-6: AC Flat nes s - 10 M Hz Filte r ( cont’d ) Te st P roc edur e (c ont’ d) Table 2- 6. AC F latness Test Poin ts - 10 MHz Filter Freq uen cy (Hz) Test Limits* ± (dB error) Freq uenc y (Hz ) Test Limi ts* ± (dB erro r) 400E3 800E3 1.2E6 1.
Test 2-7: F reque ncy Accu ra cy Descripti on The pur pos e of thi s te st is to verify th at the AFG me e ts it s specificat ions for fr eque nc y accura cy . Equi p men t Setu p • Conne c t equipm ent as shown in Figur e 2-8 • Set Coun ter to: Freque nc y, 50 Ω input im pedance Te st P roc edur e 1.
Test 2-7: F reque ncy Accu ra cy (con t’d ) Te st P roc edur e (c ont’ d) 3. Set ref ere nc e osc illa tor to INT1 or I NT 2, as sp e cifie d in Tabl e 2-7: ROSC:SOUR I NT1 Set ref os c t o INT1 or ROSC:SOUR I NT2 Set ref os c t o INT2 4.
Test 2-7: F reque ncy Accu ra cy (con t’d ) Te st P roc edur e (c ont’ d) Tabl e 2-7. Freq uency Accuracy T est P oints Ref Oscillator Source M arker Source Squarewave Frequ ency (Hz) Test Limi ts.
Test 2-7: F reque ncy Accu ra cy (con t’d ) Exam pl e Pr og ram (co nt ’d) 250 !- -- -- ---- - S et u p A FG - ---- -- --- 260 OUTPUT @A fg;" *RST" !R eset AFG 270 WAIT .
Test 2-8: Du ty Cy cle Descripti on The pur pos e of thi s te st is to verify th at the AFG me e ts it s specificat ions for squa re wa ve duty cycle. Du ty cy cle i s d eterm ined by meas uri ng pos itiv e pulse width.
Test 2-8: Du ty Cy cle (co nt’ d) Te st P roc edur e (c ont’ d) 4. Se t the AFG fr eque ncy ran ge as speci fied in Tabl e 2-8 : FR EQ :RA NG MA X Enabl e dou bli ng or FR EQ :RA NG MI N Disa ble doub ling 5.
Test 2-8: Du ty Cy cle (co nt’ d) Ex am ple P r og ram This pro gr am pe rform s the Duty Cyc le Test . 10! RE-STORE " DUTY_CYCLE" 20 DIM Freq(1:4) , Range $( 1 :4)[10] 30 ! 40 !- -- -- --.
Test 2-8: Du ty Cy cle (co nt’ d) Exam pl e Pr og ram (co nt ’d) 410 ! Take r eadi ng s her e 420 PRI NT "Out pu t Frequ ency =";Freq( I );" Hz " 430 PRI NT 440 PRINT "Rea d posit i ve pulse width ( aver age at leas t 10 period s).
Test 2-9: T otal H arm on ic Di sto rtion Descripti on The pur pos e of thi s te st is to verify th at the AFG me e ts it s specificat ions for sin e wave total harmo n ic dist ortion (THD) .
Test 2-9: T otal H arm on ic Di sto rtion (co nt ’d) Te st P roc edur e 1. Reset th e AFG: *RST;*CLS Reset AFG an d cl ear statu s registe rs 2. Se t the AFG t o outp ut a sine wave wi th th e 10 M .
Test 2-9: T otal H arm on ic Di sto rtion (co nt ’d) Te st P roc edur e (c ont’ d) Table 2-9. T HD Test Points Frequency (Hz ) Tes t Lim its * (dBc) 100 E3 250 E3 1 E6 4 E6 10 E6 -60 -60 -48 -36 -36 * T hrough 9th harm onic Ex am ple P r og ram This pro gr am perfor m s the Tota l Ha rmoni c Distortio n Te s t.
Test 2-9: T otal H arm on ic Di sto rtion (co nt ’d) Exam pl e Pr og ram (co nt ’d) 230 PRINT "Con nect Spectrum Anal yze r to AFG O utput . " 240 DISP "Pre ss ’ C onti nue’ whe.
Test 2-9: T otal H arm on ic Di sto rtion (co nt ’d) Exam pl e Pr og ram (co nt ’d) 600 ! Mea sur e har mo ni cs 2- 9 610 Sum_amp_s qr= 0 620 F OR Har monic=2 TO 9 630 GOS UB Meas_a mp 640 Sum_amp.
Test 2-10 : S pur iou s/No n-H armo nic Dist or tion Descripti on The pur pos e of thi s te st is to verify th at the AFG me e ts it s specificat ions for non -harm onic and spu rious di stortion.
Test 2-10 : S pur iou s/No n-H armo nic Dist or tion ( con t’d) Te st P roc edur e (c ont’ d) Pe r form st e ps 3 an d 4 f or ea ch f req u enc y ran ge listed in Tabl e 2-10 : 3. Se t the Spect ru m Analyze r start freque nc y and stop frequen cy to th e values li sted in Table 2- 10.
Test 2-10 : S pur iou s/No n-H armo nic Dist or tion ( con t’d) Ex am ple P r og ram This pro gr am pe rfor m s the Sp ur ious /Non-harmo nic Tes t. 10 ! RE-ST ORE " NON_HARM" 20 DIM Start.
Test 2-10 : S pur iou s/No n-H armo nic Dist or tion ( con t’d) Exam pl e Pr og ram (co nt ’d) 400 !- -- -- ---- - P e r form tes t -- ---- -- -- 410 FOR I= 1 TO 9 420 CL EAR SCREE N 430 PRINT &qu.
Performance Test Record Ta bl e 2- 11 , Performan ce T est Recor d for th e Agile nt E144 5A AFG , i s a form you c a n co py a nd use to r e co rd perfo rma nc e ve ri ficati on test result s for the AFG. Tabl e 2-11 shows AF G accur acy , m easu rem ent unc e rtainty, and t est ac curacy r at io ( TAR) va lues.
Te st Ac cu rac y Ratio (TA R) Test Accurac y Rati o (TAR ) for the E144 5A is defined as: AFG Accur acy/ Measure ment Un cer taint y, i.e. , TA R = Max imum − Expected Reading Measurement Uncertaint y For singl e-si ded measure ments , Test Acc ur acy R atio is no t defined, so ’NA’ (Not A ppl ic a ble ) wil l ap pear in the TAR column .
Table 2- 11. Perfo rmance Test Reco rd fo r the Ag ilent E 1445A (Pag e 1 of 7) Test Fa cility: Name _____ ________ ____ ________ ____ ____ ____ Address _____ ________ ________ ________ ________ City/Stat e __ ________ ____ ________ ____ ________ _ Phon e _____ ________ ____ ____ ________ ____ ____ Repo rt No.
Table 2- 11. P erformance T est Record f or t he Agi lent E1445A ( Page 2 of 7) Mode l ______ ____ ________ ____ ____ ___ Report No. ________ ____ ________ ____ ____ Da te _______ ________ Test Equipm en t Used : De scr ip tion Mode l No. Trace N o. Cal D ue Dat e 1.
Table 2- 11. Perfo rmance Test Reco rd fo r the Ag ilent E 1445A (Pag e 3 of 7) Mode l ______ ____ ________ ____ ____ ___ Report No. ________ ____ ________ ____ ____ Da te _______ ________ Test Desc ription* Minimum M easure d Re ading Maxi mum Mea s Uncert TAR Test 2-1.
Table 2- 11. Perfo rmance Test Reco rd fo r the Ag ilent E 1445A (Pag e 4 of 7) Mode l ______ ____ ________ ____ ____ ___ Report No. ________ ____ ________ ____ ____ Da te _______ ________ Test Descri ption Minimum M easure d Re ading Maxi mum Mea s Uncert TAR Te st 2-2.
10 MHz Fi lte r: 7.239 V (0 dB att en) 7.1561 _____ ____ ___ 7. 322 8 2.4 6E -3 > 10:1 Table 2- 11. Perfo rmance Test Reco rd fo r the Ag ilent E 1445A (Pag e 5 of 7) Mode l ______ ____ ________ ____ ____ ___ Report No.
Table 2- 11. Perfo rmance Test Reco rd fo r the Ag ilent E 1445A (Pag e 6 of 7) Mode l ______ ____ ________ ____ ____ ___ Report No. ________ ____ ________ ____ ____ Da te _______ ________ Test Descri ption Minimum M easure d Re ading Maxi mum Mea s Uncert TAR Test 2-6.
Table 2- 11. Perfo rmance Test Reco rd fo r the Ag ilent E 1445A (Pag e 7 of 7) Mode l ______ ____ ________ ____ ____ ___ Report No. ________ ____ ________ ____ ____ Da te _______ ________ Test Descri ption Minimum M easure d Re ading Maxi mum Mea s Uncert TAR Test 2-7.
82 V er if i c at ion Te s ts Ag il en t E1 44 5A Ser v i c e Manu al.
Chapter 3 Adjustmen ts Introduction The proced ur es in this chapt er sho w how to pe r fo rm the fo llowi ng ele ct ro nic ad justments for the A F G : • DC Acc uracy • AC Flatness ( 250 kHz and 10 MHz fi lter s) • Sk ew NOTE The DC adjus tment pro cedure shoul d be p erformed before t he AC flatness adju stment pr ocedures.
Calibr ati on Command s (co nt’ d) • CALibra tion:SE Cure[ :ST ATe] <mode>[, <code>] enabl es ( <mode> = ON) or disables ( <mod e> = OFF) cali bration sec ur ity . The sec ur ity c ode is r equir e d f or CAL:S EC: STAT OF F , bu t the co de is optio nal for CA L :S E C:S TA T ON .
Calibr ati on Command s (co nt’ d) • CALibrati on:DATA:FILTer <block> trans f ers the tw o c a libr a tio n cons tants that are use d to de te r min e the freq ue nc y poin ts that will be cali brated for the 10 MHz f ilter. The q uery fo rm re turns the cu rr ent cons tants in IEEE-488.
Defeat ing Cali bration Security If the ca libr a tio n security c ode is unk nown, the sec u rity f e at ur e ca n be defe ated by dis assembl ing t he AF G and mov ing t he j umper on co nnector J10 4 (see F i gure 3- 1) to the unse c ure d posi tion (left-mo st pins).
DC Adjustment Procedure Descripti on A DC adjustment is performed on the AFG by reading a serie s of volta ges and resistances output by the AFG, the n entering those values back into the AFG. After all me asurements have been completed, new c alibration constants are calculated and stor ed in non- volatile memory.
DC A dju stm ent P roced ur e (con t’d ) Ad ju stme nt P roc ed ur e 1. Reset th e AFG: *RST;*CLS Reset AFG an d cl ear statu s registe rs 2. Enable c al ibr a tion on the AFG: CAL:SEC:ST AT OFF, <securit y code> Ca l securi ty off where <code > is th e AFG’s secu rit y code (fa ct ory-se t to " E1445A") .
DC A dju stm ent P roced ur e (con t’d ) Te st P roc edur e (c ont’ d) 5. Tri gger t he DM M and note th e r eading. 6. Send the rea din g to the AFG : CAL:DC:POINT? <reading > where <reading> is the DMM rea ding from step 5. The AFG will retur n, in or de r, the num ber of the cur ren t cal po int and an error c ode .
DC A dju stm ent P roced ur e (con t’d ) Ex am ple P r og ram 10 ! RE-STORE "DC_ADJ UST" 30 !This prog ram per f orms t he f irmw ar e-g uided D C adjus t men t proce dure 40 !for the E1 445A Ar bi trar y Func tion Gener at or. An 3458 A DMM 50 !is require d.
DC A dju stm ent P roced ur e (con t’d ) Exam pl e Pr og ram (co nt ’d) 450 IF Cal_point=3 0 THEN !Speci al case -- set range no w 460 OUT PUT @Dmm; "RANGE 1 0" 470 E ND IF 480 ! 490 OUT.
DC A dju stm ent P roced ur e (con t’d ) Exam pl e Pr og ram (co nt ’d) 900 CASE =31 !Cal poi nt 31 910 OUTPUT @Dmm; "RANGE 10" 920 CASE =33 !Cal point 33 930 OUTPUT @Dmm; "RANGE .1" 940 CASE =41,=43 !Cal point 41,43 950 OUT PUT @Dmm;"F UNC DCV;RANGE .
AC F lat nes s Ad jus tment Pro ced ure - 250 kHz F ilte r Descripti on This pro ced u r e adjus ts the AC calibr a tio n c o nsta nt s f or th e 25 0 kH z filte r. The AC F la tness Te st f or the 250 kH z f ilte r (s ee Ch a p te r 2) is per f or me d wi th AC co rre c tion s di s a bl ed .
AC F lat nes s Ad jus tment Pro ced ure - 10 M Hz F ilte r Descripti on This pro ce du r e ad jus t s the AC c a libr a tio n c o nsta nt s f or th e 10 MH z fil ter. The A C F la tne ss Te st f or the 10 MH z f ilte r (see Ch a pte r 2) is perf o rme d wi th AC co rre c tion s di s a bl ed .
AC F lat nes s Ad jus tment P roced ure - 10 M Hz F ilte r (co nt’ d) Ad ju stme nt P roc ed ur e (c ont’ d) NOTE Rev A.02.00 (use the *IDN? command to de te rmi ne the firmw are re vision ) allo .
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Ex am ple P r og ram 10! RE-STORE "AC_FL AT" 30 !This prog ram perf orm s the A C f la tn ess ad j ust me nt procedur e f or 40 !the E14 45A Arb itr ary Funct ion G en er ato r. An 3458 A DMM 50 !and an Agil ent 8902 A Mea sur ing R eceive r are requi red .
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 420 F l atness: SUB Flatness(F ilter$, Mode$) 430 COM @A fg,@Dmm, @Pwr_mtr ,@An aly zer,S ecur e_co de$ 440 COM .
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 830 OUT PUT @Afg;"F UNC SIN;"; !S ine 840 OUTPUT @Afg;":VOLT "&VAL$(Ampl_dbm)&".
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 1270 Offs et_fa ctor =Dmm_re f 1280 PRINT "CORRECT ION FACTOR =" ;Cor rect_ factor 1290 PRINT 1300 PRI.
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 1690 !Use regist er com m ands to ge t to 10. 8M Hz 1700 OUT P UT @A fg;"DIAG :PO KE #HE000A1 , 8,0" !.
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 2180 OUT PU T @ Afg ;Ac _cal_c ons(*) !L oad ar ra y 2190 OUTPUT @Afg USING "# ,K";CHR$ (10),END !LF,E.
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 2640 DISP "C onne ct Pow er Met er to AFG O ut pu t , then pr ess ’Continu e’" 2650 PAUSE 2660 DIS.
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 3080 FO R I=1 TO M ax_con 3090 Cal_re al(I) =Cal _refle ct(I ) 3100 IF I=1 THEN Ca l_rea l(I )=Cal_ reflec t( I).
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 356 0 !Che ck f or va l id ca l 3570 Max_filter _db= M AX(C al _real (6 ),Cal _r eal(7 ),0) 3580 Min_filte r_d b.
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 4020 SUB Sy st_err(Address) 4030 COM @Af g, @ D mm,@ P wr_ mtr ,@A n al yzer , Secur e_c ode$ 4040 COM /Fl at/ I.
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 4430 ELSE 4440 Block(1 )=N 4450 Block(2 )=Div 4460 ! 4470 OUTP UT @ A fg;"C AL: SEC : STA TE O FF , "&.
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 4910 ! 4920 SUB Sec ur ity_c ode 4930 COM @Af g, @ D mm,@ P wr_ mtr ,@A n al yzer , Secur e_c ode$ 4940 COM /Fl .
AC F lat nes s A djus tm ent Pro ced ure (c on t’d ) Exam pl e Pr og ram (co nt ’d) 5380 For ma t_ num : DE F FNFor m at _num $( Val ue,N ot _e xp_m ax , INTEG ER Le ngt h, Not _ex p_img$,Exp_ img$ ) 5390 INTEGER Di ff 5400 SEL ECT ABS(Value) 5410 CASE <1.
Skew DAC Adjustment Procedure Descripti on This p ro cedu re comp en sates for ti me de la ys be tw e e n the AFG ’s tw o DAC s. The ske w se ttin g which produ c es th e lo w es t se co nd ha r mon ic am plit ude is found and l oaded into non- volat ile memo ry.
Skew DAC Adjustment Procedure (cont’d) Ad ju st ment P roc ed ur e (c ont’ d ) 2. Se t up th e AF G to ou t p ut a n 11 dB m, 4 MH z si n e w av e : FUNC SIN; :V OLT 11 DBM ; :FR EQ 4 E6 IN IT :IMM 3.
Skew DAC Adjustment Procedure (cont’d) Ex am ple P r og ram 10 ! RE-STORE "SKEW_CAL" 20 COM @A fg, @ A nalyze r ,Secu r e_ code $[ 20] 30 INTEGER D ac _bits,Dac_wo r d,Mi n_w or d,M ax_w o.
Skew DAC Adjustment Procedure (cont’d) Exam pl e Pr og ram (co nt ’d) 440 !- -- ---- -- - Per form cal -- -- -- ---- 450 OUTPUT @Afg ;"*R ST;*CLS;* OPC?" !R eset AFG 460 ENTER @ A fg; R .
Skew DAC Adjustment Procedure (cont’d) Exam pl e Pr og ram (co nt ’d) 890 !Set variable s fo r nex t loop 900 MAT SEARCH Me as_array,L OC MIN;Lo c_min !Get locatio n of min r dg 910 Cal_word=W or .
Skew DAC Adjustment Procedure (cont’d) Exam pl e Pr og ram (co nt ’d) 1280 Wr t _ske w_con:SUB W r t_s kew_c on(INTEG E R Ca l_ word ) 1290 COM @A f g,@ A nalyze r,Secure_ code $ 1300 DIM Id$[ 50] 1310 ! 1320 !Check f irm ware rev 1330 OUTPUT @Afg; "*IDN?" 1340 ENTER @Afg;Id$ 1350 ! 1360 IF POS (Id$," A.
Skew DAC Adjustment Procedure (cont’d) Exam pl e Pr og ram (co nt ’d) 1690 Me as_2 nd_harm:S UB Me as_2 nd_h arm(Reading ) 1700 COM @A f g,@ A nalyze r,Secure_ code $ 1710 OUTP UT @ A nalyze r;&qu.
116 Ad jus t m en ts Ag il en t E1 44 5A Ser v i c e Ma nu al.
Chapter 4 Replac ea ble P art s Introduction This cha pter co ntains in formati on for orderi ng replac eable parts for t he Agile nt E1 445A AF G. Ex ch ang e A ssem blie s Tab le 4 -1 l ists a ssemb lies th at m ay be re place d on an exchan ge bas is (NEW/EXCHANGE ASSEMBLIES).
Table 4-1. Agilent E 1445A Replaceable P arts Ref erence Designa t or Part Number Qty Part Descrip tion Mfr. Code Mf r. P a r t Number NEW/EXCHANGE ASSEMBLIES M E 1445A 1 E14 45A ( N EW) 284 80 ME 144.
Table 4-2. Ag ilent E1445A Reference Designators E1445 A Re ference Designator s A .... ........ .... .... .... .... .... ........ ... as sem bly MP . .... ........ .... .... .... .... .. me c hanica l part CR .. .... .... .... .... ........ .... ....
Figure 4-1. E1445A Replaceable Parts 120 R eplaceab le Part s Agil ent E 1445A Ser vice M anual.
Chapter 5 Servi ce Introduction Th is chapt er c ontains serv ice i nforma tion for the Agilent E1445A AFG, in cludi ng troubl es hoot in g guideli nes and repai r/ma i ntenance gui deline s.
Troubleshooting Techniques To trou ble sh oot an Agilent E1445A probl em , you sho uld first id e n ti fy the prob lem, and then isol ate the cau se t o a us er-r eplac eable part.
Checking fo r Heat Damage Insp ect the AFG f or s igns of abn ormal i nternal ly gen erate d he at such a s disc olo r ed pri nted circui t boards or co mp onents, dam a ge d ins ulation , or evid en ce of arcin g. If ther e is dama ge , do not operate the AFG unt il you have co r rec ted th e prob le m.
Removin g BNC Conne ctors Use the f oll owi ng steps to re mov e the AFG fron t pane l B NC connecto rs (r efer to F igu re 5-2): 1. Uns older wires 2. Remove th e two T 8 tor x sc r ews 3. R em ove the BNC connec tor 4. R evers e th e order to r eins tall the co nnector Figure 5-2.
Rep ai r/ Maintenance Guidelines This se ct io n provides gui deline s fo r repa ir in g a n d ma in taining the Agil ent E1445A AFG, inc l udi ng: • ESD precaut ion s • So lde r in g printe d cir.
126 S erv ice Agil ent E 1445A Ser vice M anual.
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Copyright © Agilent Te chnologies, Inc.1992-2005 *E1445-90011* E1445-90011.
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