Gebruiksaanwijzing /service van het product e4418b van de fabrikant Agilent Technologies
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Agilent T echnologi es Part no. E441 8-90059 Revision C Septe mbe r 2003 S er v ic e G u id e Ag il ent T ech no log ie s E4 41 8B / E4 41 9B P ower Met ers.
ii Agilent E4418 B/E4419B Servic e Guid e © Copyrig ht 1998, 2003Ag ilent T echnol ogies All rights reserv ed. Repro ductio n, adapt ation, or tra nslation withou t prior writt en perm is sion is proh ibi ted, ex ce pt as al lowed under the cop yright la ws.
Leg a l In f o rm a t io n Agile nt E 4418B/ E4419B Serv ice Guide iii Le ga l In f or m ati on Notice Inform ation conta ined in thi s document is subj ect to chang e without notic e.
Legal I nformation iv Agilent E4418 B/E4419B Servic e Guid e Li mit at ion of W arran ty The foregoi ng warrant y shall not appl y to defects res ul ting from improp er or inad equate m aintena nce by.
Equipment Oper ation Agile nt E 4418B/ E4419B Serv ice Guide v Equi pment Oper ati on W ar nin gs a nd Caut i ons This gui de uses warnings and cautions to de note hazard s. W ARNING A warning calls attention to a procedure, practice or the like, wh ich, if not correctly perfor med or adhe r ed to, could result in i njury or the loss of l ife.
Equipment Operat ion vi Agilent E4418 B/E4419B Service Guide Gener al Safety Co nsideratio ns W ARNING Bef o re thi s in s tr u m en t is s w i t che d on, ma k e s ure it h as be en prop erly gr ounded through the protective conductor of the ac po wer cable to a soc ket outle t pr ovided wi th prot ective e arth c ontact.
Equipment Oper ation Agile nt E 4418B/ E4419B Serv ice Guide vii IEC 101 0-1 Com pliance This inst rument ha s been designe d and t ested in ac cordance with IEC Public ation 1010-1 +A1: 1992 Safety Requi rements for Elec tri cal Equipment for Measur ement, Contro l a nd Labo ratory Us e and has been suppl ie d in a s afe condi ti on.
List of Re l ated Publications viii Agilent E4418 B/E4419B Servic e Guid e Li st of Rel ate d P ub li c ati on s The Agi le nt E 4418B and Agile nt E4419B Us e r ’ s Gui des are al so av ai la bl e .
Sales and Serv ice Offices Agile nt E 4418B/ E4419B Serv ice Guide ix Sale s a nd S erv ice Of fic es For m ore inf ormation a bout Agil e nt T ec hnologies t est and measurement products , applica tions , servic e s, a nd fo r a current sale s office listing, visit our web site: http ://www .
Sales and Ser vice Offices x Agilent E4418B/E 4419B Se rvice Guide Eur ope: Agile nt T echnol ogies T es t & Meas u re men t Europea n Marketin g Or ganization P .
Sales and Serv ice Offices Agile nt E 4418B/ E4419B Serv ice Guide xi Re tu rn i n g Y o ur P o wer Met er fo r S er v ic e Use th e info rmation in thi s se ct ion if you need to retu rn your power meter to Agile nt T echnol ogies.
Abou t this G u id e xii Agil ent E4418 B/E4419B Servic e Guid e Ab out th is Gu ide Chapter 1: Specifications This cha pter list s the power mete r’ s specifi cations and de sc rib es how to interpr et the s e sp ec if i ca tio n s.
T able of Contents Pa g e Agile nt E 4418B/ E4419B Serv ice Guide Conten ts-1 Spe ci fic at io ns . ..... ..... .... ..... ..... ..... .. ..... ..... .... ..... ..... .... ..... ... .... ..... ..... .... . 1 Intr oduction.... ..... ..... ..... .. ....
Conte nts-2 Agilent E4418 B/E4419B S ervice Guide Equipmen t ... ..... .... ..... ..... ..... .... ... .... ..... ..... ..... .... ..... ..... ..... .. .... 2-5 Test Setup .... ..... .... ..... ..... ..... .... ... .... ..... ..... ..... .... ..... ..
Agile nt E 4418B/ E4419B Serv ice Guide Conten ts-3 Pro cedure .... .... ..... ..... ..... .... ..... ... .... ..... ..... .... ..... ..... ..... .. ..... .... . 3-11 Theory of O p eration ... ..... ..... ..... .... ... ..... .... ..... ..... .... ...
Conte nts-4 Agilent E4418 B/E4419B S ervice Guide Defi ne the Measu rement Equation .... ... .... ..... ..... .... ... .. ..... .... A-3 Sensi t ivi ty Coeffic ients Ci: .... .. ..... ..... .. ... .... ..... ..... .... ... .. ..... .... A-8 Combined Stan da rd Unc e r tainty uc(y): .
1 Specificati ons.
Sp ecif ica tio ns Intr oduction 1-2 Agilent E4418B/E 4419B Se rvice Guid e In trod uc tio n This ch apte r det ails th e po we r me ter’s specific atio n s and supp lem e nta l cha rac te ris ti cs. Specificatio n s desc ri be the warran ted perform a nc e and apply after a 30 minute w a rm-u p .
Sp ecif ica tio ns Power Met er Spec ifications Agile nt E4 418B/ E4419B Serv ice Guide 1-3 P owe r Me ter S pec ifi cat io ns Met e r Fre que nc y R ang e 100 kHz to 1 10 GH z, po w er senso r depend.
Sp ecif ica tio ns Po w e r M e te r S p e ci fi ca t io n s 1-4 Agilent E4418B/E 4419B Se rvice Guid e Ac cu r a cy Instrume ntation Abs o lut e: ± 0.0 2 dB (L og ari th mic ) or ± 0. 5% (Lin ear). ( R efer to th e power sens or l inear ity sp eci fication in y our po wer sen so r m an ual to a ssess over a ll sys t em accu racy .
Sp ecif ica tio ns Power Met er Spec ifications Agile nt E4 418B/ E4419B Serv ice Guide 1-5 1 mW Power Re fe re n ce 1 • P ower Out put : 1.00 mW (0.0 dBm). • A cc ur a cy : (fo r t wo ye a rs ) ± 0.9% (0 to 55 ºC). ± 0.6% (25 ± 10 ºC ). ± 0.
Sp ecif ica tio ns Power M eter Supp lemental Characteri stics 1-6 Agilent E4418B/E 4419B Se rvice Guid e P owe r Me te r Su p plem enta l Ch ar acter is tic s Measu rement Spe ed Ov er the GP - I B ,.
Sp ecif ica tio ns Power Meter Suppl em enta l Characteristi cs Agile nt E4 418B/ E4419B Serv ice Guide 1-7 Measu rement No ise P ower senso r depen dent (refe r to T able 1-2 an d Table 1-3). A verag ing effects on m easu reme nt nois e. A verag ing ove r 1 to 1 024 readin gs is availa ble for redu cin g noise.
Sp ecif ica tio ns Power M eter Supp lemental Characteri stics 1-8 Agilent E4418B/E 4419B Se rvice Guid e T able 1-3 : P o wer Sensor Spec ificatio ns± Po w e r S e n s o r Zer o Drift 1 1. Wi thin 1 hour afte r zero set, at a cons tant te mpera ture , aft er a 24 hour w arm-up of th e power met er .
Sp ecif ica tio ns Power Meter Suppl em enta l Characteristi cs Agile nt E4 418B/ E4419B Serv ice Guide 1-9 Sett ling Time 0 to 99% s ettled readin g s over the GP-IB .
Sp ecif ica tio ns Power M eter Supp lemental Characteri stics 1-10 Agilent E4418 B/E4419B Service Guide For A gilen t E -series powe r senso rs In F AST m ode , wit h in th e ra nge - 5 0 dBm to +17 .
Sp ecif ica tio ns Power Meter Suppl em enta l Characteristi cs Agile nt E 4418B/ E4419B Serv ice Guide 1-11 Auto fi lte r , de fa ul t res o lu t ion , 10 dB de cr ea s i ng p o we r st ep, nor m al a nd x 2 s pee d m ode s: 10 dB 10 dB 10 dB 60 dB Maximum dBm Minimum d Bm Po w e r Sensor 40 m s 3.
Sp ecif ica tio ns Power M eter Supp lemental Characteri stics 1-12 Agilent E4418 B/E4419B Service Guide P ower S ensor Specificat ions Definitions Zero Se t In any powe r meas ur emen t, th e powe r me te r mus t initi ally be se t to zero with no powe r appli ed to the pow er se nso r .
Sp ecif ica tio ns Battery Option 001 Oper ationa l Chara cteristi cs Agile nt E 4418B/ E4419B Serv ice Guide 1-13 Bat te ry O pt io n 0 01 Op er at iona l C har ac te ri sti cs The followi ng inform ation descr ibes charac teristic pe rforman ce based at a temper ature of 25 ° C unless o ther w ise no te d.
Sp ecif ica tio ns Gene ral Charact eristic s 1-14 Agilent E4418 B/E4419B Service Guide Gene ral Ch ar ac teris ti cs Rea r P anel Conn ector s Recorder Output(s) Analog 0-1 V olt, 1 k Ω o ut put im pe da n ce, BNC con ne ct or GP-IB All ows commun icat ion w ith an e xtern al GP- IB contr olle r .
Sp ecif ica tio ns Envir onmental Chara cter istics Agile nt E 4418B/ E4419B Serv ice Guide 1-15 En v ir onm enta l Ch arac ter i sti cs General Co nditions Co m p lie s w i t h th e r eq u ir em e n t s of th e E M C D i re ct i ve 8 9/ 3 3 6 / E E C.
Sp ecif ica tio ns General 1-16 Agilent E4418 B/E4419B Service Guide Gene ral Dime ns io ns The following dimensions excl u de fro n t and r ear pane l pro t rusions : 212.6 mm W x 88.5 m m H x 348.3 mm D (8.5 in x 3.5 in x 13.7 in) We i g h t Net Agilent E4418B, 4.
Sp ecif ica tio ns Ge ne ra l Agile nt E 4418B/ E4419B Serv ice Guide 1-17 Re mo te Prog ramm i ng Interface GP-IB interfa ce operates to IEEE 488.2. RS-232 an d RS-422 interface s are suppli ed as sta nd ar d. Com ma n d La ngu age SCPI st a n dard in t erf ac e com ma nds .
Sp ecif ica tio ns General 1-18 Agilent E4418 B/E4419B Service Guide.
2 Pe r f o r m a n c e T e s t s.
P erf or mance T ests Intr oduction 2-2 Agilent E4418B/E 4419B Se rvice Guid e In trod uc tio n The procedu res in thi s c hapt er test the power meter’ s elect ri c al perfor mance us i ng the specif ications i n Chapte r 1 as the per formance sta n dards.
P er formance T ests Introd uction Agile nt E4 418B/ E4419B Serv ice Guide 2-3 Equi p ment R e qu i re d T able 2-1 lis t s all the equipment r equired fo r the adj ustments and perfor mance tes ts. If subs tituti on s must be made , the equipment u sed mus t meet the cr itic al sp ecific atio ns.
P erf or mance T ests Intr oduction 2-4 Agilent E4418B/E 4419B Se rvice Guid e P erf ormance T est Reco rd Resul ts of the perfo rman ce te sts may be tabula te d in T able 2-7, “P erf orman ce T est Re cord,” o n page 2-2 3 .
P er formance T ests Zero Tes t Agile nt E4 418B/ E4419B Serv ice Guide 2-5 Zer o T e st Spe cification Desc r iptio n After the pow er m ete r is i nitia lly calib rated a nd zer oed, th e change i n th e digit al re ado ut is m onit ore d .
P erf or mance T ests Zero Test 2-6 Agilent E4418B/E 4419B Se rvice Guid e Pr oced ure The following procedur e should b e per formed fo r the Z ero T est. Note Th e procedure deta i l s the key pres se s requi red on the Agilent E 4418B. F or the Agilent E4419B the equiv alent key pres se s shoul d be perf ormed on both chan nels .
P er formance T ests Instr ument Accu racy Tes t Agile nt E4 418B/ E4419B Serv ice Guide 2-7 Instr u men t Ac cu racy T e st Spe cification Description The power met er acc uracy is verified for variou s power inputs .
P erf or mance T ests Inst rument Acc uracy Te st 2-8 Agilent E4418B/E 4419B Se rvice Guid e T est S etup Figure 2-2: Instr umen t Accu racy T e s t S etup Pr oced ure The foll owing proc edure should b e performed for t he Instrument Accurac y Te s t .
P er formance T ests Instr ument Accu racy Tes t Agile nt E4 418B/ E4419B Serv ice Guide 2-9 Note When switch ing th e rang e ca libr ato r to STAN DBY , allo w en ough time for th e r ang e c alibr ator to se ttle to its z er o va lue be fore attemp tin g to zer o the po wer mete r .
P erf or mance T ests Inst rument Acc uracy Te st 2-10 Agilent E4418 B/E4419B Service Guide T able 2-3: Inst ru m e nt A ccurac y Re s ult s (F or Indi cation Only ) Note Th e nomin al outp uts for t he 3 µ W, 3 0 µ W , 300 µ W , 3 mW , 10 mW , 30 m W and, 100 mW setting s are 3.
P er formance T ests Instr ument Accu racy Tes t Agile nt E 4418B/ E4419B Serv ice Guide 2-11 T est P r oce du re 2 Note This test proced ure make s use of a 11683A Range Calibr ator fitted wit h opt io n H01.
P erf or mance T ests Inst rument Acc uracy Te st 2-12 Agilent E4418 B/E4419B Service Guide Pr oced ure The foll owing proc edure should b e performed for t he Instrument Accurac y Te s t . Note Th e procedure deta i l s the key pres se s requi red on the Agilent E 4418B.
P er formance T ests Instr ument Accu racy Tes t Agile nt E 4418B/ E4419B Serv ice Guide 2-13 Note When switch ing th e rang e ca libr ato r to STAN DBY , allo w en ough time for th e r ang e c alibr ator to se ttle to its z er o va lue be fore attemp tin g to zer o the po wer mete r .
P erf or mance T ests Inst rument Acc uracy Te st 2-14 Agilent E4418 B/E4419B Service Guide 14. Set th e DC cal ibrat or outpu t to the v alues s hown in T able 2-4. Fo r each setti ng, set the filte r lengt h of th e po we r me te r to the co rr es p o n ding va l ue, and ve ri fy th at th e powe r met e r rea din g is within the limi ts sho w n.
P er formance T ests Power Refe rence Le vel Test Agile nt E 4418B/ E4419B Serv ice Guide 2-15 P owe r Refe re nce L evel T es t Description This test v erifies th e power l evel a ccuracy of the internal 5 0 MHz os c ill a t or —a l so cal l ed t he p ow er ref eren ce osc ill a t or .
P erf or mance T ests Power Refer ence Level Test 2-16 Agilent E4418 B/E4419B Service Guide If an equivale nt measu reme nt system i s employ ed for pos t- f act or y test, the po wer refere nce osc illat or outpu t can again be set to 1 mW ± 0.
P er formance T ests Power Refe rence Le vel Test Agile nt E 4418B/ E4419B Serv ice Guide 2-17 Equi p ment • T es t po w er met e r: Agi l ent 432 A. • The rmis to r moun t: Agilen t 478A opt ion H75 or H76. • Dig ital vo ltmeter (DVM): Ag ilent 3458 A.
P erf or mance T ests Power Refer ence Level Test 2-18 Agilent E4418 B/E4419B Service Guide 4. Pr eset th e power met er: Press , th en on the p ow e r me te r . Set th e Agilent 4 32A RANGE switch to Coarse Z ero. Adj ust the front pan el C oar se Z ero co ntro l t o obt ai n a z ero me ter ind icat ion .
P er formance T ests Agil ent E- S eri es Power Sensor Int erface Test Agile nt E 4418B/ E4419B Serv ice Guide 2-19 Agi len t E -Ser ies P ower S en sor In te rfac e T e st The Agilent E-series powe r.
P erf or mance T ests Agile nt E-Seri es Power Sensor Functiona l Test 2-20 Agilent E4418 B/E4419B Service Guide Ag ilent E -Seri e s P o w er Se nsor Fu ncti o nal T est Description This test ve r if ie s that the meter /sen so r com bin ation can m ak e RF measu rements.
P er formance T ests Agilent E-Ser ies Power Sensor Funct ional Test Agile nt E 4418B/ E4419B Serv ice Guide 2-21 2. P ress the n . 3. On the power meter press , . W ait approximat el y 10 secon ds for th e wait sym b ol t o d isappe ar . V er ify that th e display read s 0 ± 50 pW .
P erf or mance T ests Agile nt E-Seri es Power Sensor Functiona l Test 2-22 Agilent E4418 B/E4419B Service Guide T able 2-6: Functional T est Resu lt Te s t Chan nel A Ov e rl oa d Er ro r Chan ne l B.
P er formance T ests Perfor m ance Test Record Agile nt E 4418B/ E4419B Serv ice Guide 2-23 P er forma nc e T est R e cord Model Ag ile nt E4418B/E4 419B P owe r Meter T ested by _________ ___________.
P erf or mance T ests Perfo rmance Test Record 2-24 Agilent E4418 B/E4419B Service Guide Out p u t S t an ding W ave Ratio T est 1 N/A ________ ___ ________ ___ 1. 06 1, 2 1.08 1, 3 1. This test is not c hannel related. 2. F or i nstrument s with t he 50M Hz 1mW out put ( power ref ) co nnector mounted on t he fron t p anel.
3 Adjustments.
Adjus tments Intr oduction 3-2 Agilent E4418B/E 4419B Se rvice Guid e In trod uc tio n This ch apte r des cr ibe s adju stm e nt s and check s wh ich ensu re p rop e r perfor mance of the power meter .
Adjus tments Introd uction Agile nt E4 418B/ E4419B Serv ice Guide 3-3 Equi p ment R e qu i re d The adju stment procedu res inc lude a list of rec ommended tes t equipment.
Adjus tments Power Refer ence Oscillat or Frequency Adj ustment 3-4 Agilent E4418B/E 4419B Se rvice Guid e P ow e r R efe re nc e O sci l la to r F req ue ncy A d jus tm e nt Note Adjustm ent of t he p ow er r ef erenc e osc illator fr eq uenc y may a lso affect the outp u t lev el of the os cilla to r .
Adjus tments Powe r Refer ence Oscillat or Frequency Adjust m ent Agile nt E4 418B/ E4419B Serv ice Guide 3-5 3. Tu rn the po w e r re f e re nc e on by pr es s in g ■ , on the A gilen t E44 18B . ■ , , , on t he Agilent E4419B. 4. Obse r ve the r eading o n the f requency c ounter .
Adjus tments Power Refer ence Oscillat or Level Adjustment 3-6 Agilent E4418B/E 4419B Se rvice Guid e Power Re feren ce Osc illato r Level Ad ju stme nt Description This test ad justs th e powe r le v el ac curac y of th e in te rnal 5 0 M Hz osc i llat or —also called the power ref erenc e oscill a t or .
Adjus tments Power Referen ce Oscilla tor Le vel Adjust ment Agile nt E4 418B/ E4419B Serv ice Guide 3-7 Note The p owe r mete r may be re turne d to the near est A g ilent Te c hnol ogie s of fice to h ave the power r eference o scillator chec ked and/o r adju s ted.
Adjus tments Power Refer ence Oscillat or Level Adjustment 3-8 Agilent E4418B/E 4419B Se rvice Guid e By su bstitu tin g eq uati on 3 into equ atio n 1 and ma ni pu latin g th e res ult you get: Thi s q u a d rat i c ca n be so lv e d to g ive eq ua ti on 2.
Adjus tments Power Referen ce Oscilla tor Le vel Adjust ment Agile nt E4 418B/ E4419B Serv ice Guide 3-9 3. Con ne ct the equi pmen t as s hown in Fig ur e 3-3. The lead s shoul d be isol ated from g round. Ensure tha t the pow er refer ence osci llator i s off .
Adjus tments Power Refer ence Oscillat or Level Adjustment 3-10 Agilent E4418 B/E4419B Service Guide 14. Remo ve the power meter ’s cover and adjust A2R90 un til the DVM indi cat es t h e calcu l ated value of V 1 .
Adjus tments Displ ay Brightne ss and Co ntrast Adjustment Agile nt E 4418B/ E4419B Serv ice Guide 3-11 Disp lay Br ig ht ne ss and C ont ra st Adj us tm ent In tr oduct ion The following procedur e should be perfor med whenever a f r ont pane l ass emb ly or proces so r a ssemb l y are replac ed.
Adjus tments Displ ay Brightness and Contr ast Adjustment 3-12 Agilent E4418 B/E4419B Service Guide.
4 Theory of Operation.
Theory of Oper ation Intr oduction 4-2 Agilent E4418B/E 4419B Se rvice Guid e In trod uc tio n This chapter descri bes how each of the power meter’ s assembli es operat e. A bloc k diagram is inc luded at the en d of the chapt er giving y ou an overall view of the power meter’ s operat io n.
Theory of Opera tion A1 Power Su pply/Batte ry Charg er Agile nt E4 418B/ E4419B Serv ice Guide 4-3 A1 P ower Su pply/Ba tter y Ch arger The A1 po wer supp ly/batt ery charger is a 20 W , 47 to 44 0 H.
Theory of Oper ation A2 Processor Assem bly 4-4 Agilent E4418B/E 4419B Se rvice Guid e A2 Pro ces sor Ass em bly The proces sor assembly co nta i ns the mic roc on tr ol l er and assoc iated ci rcui t.
Theory of Opera tion A2 Processor Asse mbly Agile nt E4 418B/ E4419B Serv ice Guide 4-5 The LCD co ntr ol le r on the A 3 fron t p ane l asse m bl y is conf ig ur ed as a memory mapped per ipheral , and as s uch r equires on ly to b e fed wi th the appropr iate address , data and control lines from the micro con t roll er ci rcuits .
Theory of Oper ation A2 Processor Assem bly 4-6 Agilent E4418B/E 4419B Se rvice Guid e The microcont roller c ircuits that c ontrol a ll the above function s, an d prov ide platfor m for th e system softwa re to r u n on, comprise t he mi cro co nt ro lle r it s el f , me m ory , an d clo ck an d l og ic ci rcui ts.
Theory of Opera tion A3 Front Panel Assembly Agile nt E4 418B/ E4419B Serv ice Guide 4-7 A3 Fr ont P ane l As sembl y The fro nt pane l ass emb ly is m ad e up of a liquid crystal display (LCD) , a keypad and, depending on the power meter option, a power reference cab le assembl y and a s ensor cable a ssem bly(s).
Theory of Oper ation A4 Comms Assem bly 4-8 Agilent E4418B/E 4419B Se rvice Guid e A4 Co mms Assemb ly The comms a ssemb ly cont a ins the cir cuit ry r equir ed f or remote co ntro l of the pow er meter . This assembly supports parallel and ser ial i n terfaces .
Theory of Opera tion A5 Daughter Asse m bly Agile nt E4 418B/ E4419B Serv ice Guide 4-9 A5 Daught er As semb l y The A5 daughter assembl y is loaded ver tically into th e A2 proc essor ass embly .
Theory of Oper ation A6 Measurem ent Assembly 4-10 Agilent E4418 B/E4419B Service Guide A6 M ea sur em ent A sse mbly Ther e is one me asurement assembly in the Agilent E4418B an d two in the Agilent E 4419B.
Theory of Opera tion A6 Measurem ent Asse mbly Agile nt E 4418B/ E4419B Serv ice Guide 4-11 The D SP chip con trols th e logic w hich s et s the cho pper d rive r voltag e an d fr eque nc y co n trol . F or the : • Agilen t 8 480 series powe r se n sors th is is 0 V an d -10 V at 217 Hz.
Theory of Oper ation A8 Rechargeab le Battery Assem bly 4-12 Agilent E4418 B/E4419B Service Guide A8 R echa rgea ble Bat ter y As se mbly The A8 Rech argeable Battery Assembly al lows the EPM power meter with option 001 fitted to operate wh en no AC power in p ut is availab le.
Theory of Opera tion A8 Rechar geable Ba ttery Asse mbly Agile nt E 4418B/ E4419B Serv ice Guide 4-13 Remove this pag e and repl ace with pullout.f m..
Theory of Oper ation A8 Rechargeab le Battery Assem bly 4-14 Agilent E4418 B/E4419B Service Guide.
5 Repla ceable Pa rts.
Replac eable Part s Intr oduction 5-2 Agilent E4418B/E 4419B Se rvice Guid e Intr od u cti on This cha pter conta ins detai ls of some of th e higher le vel compone nts and asse m b lie s which c an be ordered from Agile nt T echnolo gies. It a ls o details how to ass em ble and dis ass emble the power meter for repair .
Replaceab le Parts As se mbl y Pa r t Nu mbe rs Agile nt E4 418B/ E4419B Serv ice Guide 5-3 Assem bly P art Num bers Re f eren ce Design ator De scription Ag il ent Part Number A1 Power Sup ply Assem bly Refe r to “ Power Supp ly Assem bly T ype s”, on pa ge 5-5 to h elp wi th the sele ction.
Replac eable Part s Assemb ly Par t Numbers 5-4 Agilent E4418B/E 4419B Se rvice Guid e A304 Fron t P ane l Asse mbly for: Agile nt E 4419B Opti on 003 New E 4419-6100 2 Refurb ished E441 9-69002 A4 Co.
Replaceab le Parts As se mbl y Pa r t Nu mbe rs Agile nt E4 418B/ E4419B Serv ice Guide 5-5 Powe r Suppl y Assembl y T ypes Before order ing an A1 Power Supply Asse mb ly , check connec tor J 2 and co m pare i t to Fi gure 5- 1 and Figur e 5-2 a nd selec t the appropri ate model.
Replac eable Part s Front Panel Connector Repa ir 5-6 Agilent E4418B/E 4419B Se rvice Guid e Fr on t Pane l Co nne ctor Rep air The fron t pan el assembly is an excha nge assembly .
Replaceab le Parts Firmware Upgr ades Agile nt E4 418B/ E4419B Serv ice Guide 5-7 F ir mw are Upgr ad es The power mete r ’ s firmware can be upgrade d us ing a PC.
Replac eable Part s Assemb ly and Dis assem bl y Guideli nes 5-8 Agilent E4418B/E 4419B Se rvice Guid e Assem bly a nd Di sasse mbly Gu id eli nes The gui de lines in thi s section desc ribe the remo val and replac ement of the major as s emblie s in the Agi lent E4418B and Ag ilent E4419B power meters .
Replaceab le Parts Assem bly and Di sassem bl y Guideli nes Agile nt E4 418B/ E4419B Serv ice Guide 5-9 Remov ing th e A1 Powe r Supply A ssembly 1. Rem ove th e power supply cov er by lifti ng it out. 2. Disconne ct t he line input module from the chassis and po wer s upply ass em bl y .
Replac eable Part s Assemb ly and Dis assem bl y Guideli nes 5-10 Agilent E4418 B/E4419B Service Guide Rem oving the A2 P rocessor Assembl y 1. Rem ove th e A5 daugh te r and A6 measure ment assembl ie s as descri bed on page 5-1 2.
Replaceab le Parts Assem bly and Di sassem bl y Guideli nes Agile nt E 4418B/ E4419B Serv ice Guide 5-11 Removing the A4 Comms Assembly 1. Rem ove th e A2 proces sor , A5 daugh ter and A6 measure ment as s emblie s a s shown on pa ge 5-10 and pag e 5-12.
Replac eable Part s Assemb ly and Dis assem bl y Guideli nes 5-12 Agilent E4418 B/E4419B Service Guide Remov ing th e A5 Dau ghter or A 6 Measu r ement Ass emblies 1. Disconne ct the flex circuit from measur ement a ssembly . Note Ca re should be ta ken when disc onne cting th e flex circui t from the me asu re m en t a s se mb ly.
Replaceab le Parts Assem bly and Di sassem bl y Guideli nes Agile nt E 4418B/ E4419B Serv ice Guide 5-13 Removing the A7 Fan Assembly 1. Rem ove th e A1 power suppl y ass embly a s shown on page 5-9. 2. Rem ove th e pins which at tach the fan to the chas sis.
Replac eable Part s Assemb ly and Dis assem bl y Guideli nes 5-14 Agilent E4418 B/E4419B Service Guide Rem oving the Power Meter RAM Bat tery (BT 1) 1. Rem ove th e A2 proces sor assembly as de scribed on pa ge 5-10. 2. Rem ove t he A2J1 li nk to dis c onnect the batte ry fr om the res t o f the ci rcuit r y .
Replaceab le Parts Assem bly and Di sassem bl y Guideli nes Agile nt E 4418B/ E4419B Serv ice Guide 5-15 Re mo vin g t he A 3 Fr ont Pa ne l As se m bly 1. Disconne ct t he followi ng ca bles fr om th e A2 pr ocessor a ssembly: n power re ference se mi -rig id (When re pla cing use the to rque s detailed on page 5-1 8.
Replac eable Part s Assemb ly and Dis assem bl y Guideli nes 5-16 Agilent E4418 B/E4419B Service Guide Rep lacing the Fr ont Pa nel Power Sens or Cable Assem blies 1. Rem ove th e front panel from the powe r meter . (Refer to “Remo ving the A3 Fron t P ane l As se mbl y” , on page 5-15 for details on removi ng the front pane l.
Replaceab le Parts Assem bly and Di sassem bl y Guideli nes Agile nt E 4418B/ E4419B Serv ice Guide 5-17.
Replac eable Part s Assemb ly and Dis assem bl y Guideli nes 5-18 Agilent E4418 B/E4419B Service Guide Rep lacing the Front P anel Power Referen ce Ca ble Assembly 1. Rem ove th e front panel from the powe r meter . (Refer to “Remo ving the A3 Fron t P ane l As se mbl y” , on page 5-15 for details on removi ng the front pane l.
Replaceab le Parts Assem bly and Di sassem bl y Guideli nes Agile nt E 4418B/ E4419B Serv ice Guide 5-19 Re pla c i ng th e Re a r P an e l Pow e r Se nsor Ca bl e As se m bl ie s (O ptions 002 and 003 ) 1. Disas semble the power mete r to all ow ac cess to the rear pane l co nnecto rs.
Replac eable Part s Assemb ly and Dis assem bl y Guideli nes 5-20 Agilent E4418 B/E4419B Service Guide.
Replaceab le Parts Assem bly and Di sassem bl y Guideli nes Agile nt E 4418B/ E4419B Serv ice Guide 5-21 Rep lacin g the R ear Panel P o wer R eferen ce C ab le Asse mb ly (O ption 003) 1. Disas semble the power mete r down to all ow ac cess to the rear pane l conne ctors.
Replac eable Part s Assemb ly and Dis assem bl y Guideli nes 5-22 Agilent E4418 B/E4419B Service Guide Rep lacing the R ear Panel R ecorder Outp ut(s) Ca ble Assembly 1. Disas semble the power mete r down to all ow ac cess to the rear pane l conne ctors.
Replaceab le Parts Assem bly and Di sassem bl y Guideli nes Agile nt E 4418B/ E4419B Serv ice Guide 5-23 Rep lacing The Chas sis Assembly 1. Remove th e Power Meter Cover as shown in “Re m oving the Power Mete r Cover” , on page 5-8.
Replac eable Part s Assemb ly and Dis assem bl y Guideli nes 5-24 Agilent E4418 B/E4419B Service Guide.
6 T roublesh ooting.
T r oub leshoot ing Intr oduction 6-2 Agilent E4418B/E 4419B Se rvice Guid e In trod uc tio n This chap ter enables qu alified s e rvice pe rso nnel to diagn ose susp ect ed fault s w ith th e po wer me ter Rm t I/O (Rem ote Input /O utpu t) s ign al li nes and RS232/42 2 serial port.
T roubl eshooting Introd uction Agile nt E4 418B/ E4419B Serv ice Guide 6-3 Fi gure 6-1: Trouble sh ooting Guide -Upper Window TTL Output Star t Powe r U p mete r PO ST Pa s s ? Co nnect Sens or to Ch.
T r oub leshoot ing Intr oduction 6-4 Agilent E4418B/E 4419B Se rvice Guid e A Se lec t Preset/lo cal Conf irm Me as /S et up Limits Limits On TTL Outp ut TTL Output On , Fa il O/P L ow Ye s P ower down m eter . Disconnec t ac power and batte ry if fitted.
T roubl eshooting Introd uction Agile nt E4 418B/ E4419B Serv ice Guide 6-5 Fi gure 6-2: T roubleshooting Guide - Lower W indow TTL Output Star t Powe r U p meter PO ST Pa s s ? Co nnect Sens or to Ch.
T r oub leshoot ing Intr oduction 6-6 Agilent E4418B/E 4419B Se rvice Guid e A Sel ec t Preset/lo cal Confirm Low er Win dow - using Meas/Set up Li mi ts Li mi ts On TTL Out put TTL Out put On, Fail O/P Low Ye s P ower down meter . Disconnec t ac power and b atter y i f fitted.
T roubl eshooting Introd uction Agile nt E4 418B/ E4419B Serv ice Guide 6-7 Fig u r e 6-3: T roubleshooti n g Gu ide - TTL Inputs Star t Powe r U p mete r POS T Pa s s ? Con nect Sen sor to Ch annel A.
T r oub leshoot ing Intr oduction 6-8 Agilent E4418B/E 4419B Se rvice Guid e A B Did pow er meter channel s ze ro ? Apply T TL log ic 1 l ev el t o RJ45 co nnector. pin 5 wr t pin 8. A ppl y TTL l ogic 0 p ulse to RJ 45 connect or pin 6 wr t pin 8. See U ser’s Guide chap ter 2 for ti ming.
T roubl eshooting Introd uction Agile nt E4 418B/ E4419B Serv ice Guide 6-9 B Remove A2 Proce ssor Assy (see chapter 5) to ga in access to the Co mmunicat ions A ssembly co nnector. Measur e resista nce between R mt I/O c onnector pin 6 and connec tor J 4 pin 43.
T r oub leshoot ing Intr oduction 6-10 Agilent E4418 B/E4419B Service Guide F i gure 6-4: Tr oubleshooting Gu i de - RS232/422 I nterface Start Po w e r u p met er POST P ass? Whi ch POST T e st fai l.
Meas ure ment Uncert ai nty Anal ysi s – Instrum ent Accur acy T es t Agile nt E4416A/E441 7A Servic e Guide A-1 Appendix A Mea s ur ement Un ce r t ai nt y A nal ys is – Instru men t Accu ra cy T.
Meas ure ment Uncert ai nty Anal ysi s – Instrum ent Accur acy T es t Meas urement Int roduction A-2 Agi le nt E4416A/E441 7A Service Guid e Me as urem e nt In trod u cti on In the Instru ment Accuracy te s t the DUT measures power le vels output from the test sta tion from –25dBm t o + 20dBm.
Meas ure ment Uncert ai nty Anal ysi s – Instrum ent Accur acy T es t Mea surement Introd ucti on Agile nt E4416A/E441 7A Servic e Guide A-3 Un certa inti es 1. The re is no unc erta in ty invo lved wit hin the 8482 A sensor , as a rela tive po wer is bei ng measur ed.
Meas ure ment Uncert ai nty Anal ysi s – Instrum ent Accur acy T es t Meas urement Int roduction A-4 Agi le nt E4416A/E441 7A Service Guid e The Measure ment Uncert ai nty is not cal cul ated from d.
Meas ure ment Uncert ai nty Anal ysi s – Instrum ent Accur acy T es t Mea surement Introd ucti on Agile nt E4416A/E441 7A Servic e Guide A-5 St anda rd Uncertainty u (x i ): T able A-1 shows the sta ndard deviat ion of the 30 reading s from the DUT at various power le vels.
Meas ure ment Uncert ai nty Anal ysi s – Instrum ent Accur acy T es t Meas urement Int roduction A-6 Agi le nt E4416A/E441 7A Service Guid e Worst case error on 0.1V rang e: Worst case error on 1V rang e Worst case error on 10V rang e V oltage Erro r Distribution S tandard Uncertainty 2.
Meas ure ment Uncert ai nty Anal ysi s – Instrum ent Accur acy T es t Mea surement Introd ucti on Agile nt E4416A/E441 7A Servic e Guide A-7 Worst case error on 15.8V ma ximu m power settin g The rela tions hip between the applied volt age from the Univ ersal So urce to the corre s pondi ng power is giv en from: 1mW = 0 .
Meas ure ment Uncert ai nty Anal ysi s – Instrum ent Accur acy T es t Meas urement Int roduction A-8 Agi le nt E4416A/E441 7A Service Guid e By using the DMM Uncerta intie s cal culat ed pre vio usly the wors t ca se volt age a nd corre s pondi ng power errors ca n be calc ulated.
Meas ure ment Uncert ai nty Anal ysi s – Instrum ent Accur acy T es t Mea surement Introd ucti on Agile nt E4416A/E441 7A Servic e Guide A-9 Co m bined S t andard Uncert ainty u c (y): Ther e is no .
Meas ure ment Uncert ai nty Anal ysi s – Instrum ent Accur acy T es t Meas urement Int roduction A-10 Agile nt E4416A/E441 7A Servic e Guide.
Meas uremen t Uncert ai nty Anal ysi s – Power Ref ere nce Level T est Agile nt E4416A/E441 7A Servic e Guide B-1 Appendix B Measuremen t Uncerta inty Anal ysis – Powe r Refer e nce Leve l T e st.
Meas ure ment Uncert ai nty Anal ysi s – Power Reference Leve l T es t Meas urement Int roduction B- 2 Agi lent E4 416A/E 4417A Servic e Guide Me as urem e nt In trod u cti on In the Power Reference Leve l T est, the outp ut from the DUT’ s 1mW Power Ref conne ctor is measure d.
Meas uremen t Uncert ai nty Anal ysi s – Power Ref ere nce Level T est Mea surement Introd ucti on Agile nt E4416A/E441 7A Servic e Guide B-3 where, P s is th e r efl ec ti o n co e ffic ie n t of th e so u rce ( i. e. th e D UT ) a n d P d is the ref l ectio n coef fici e nt o f the 8478B detector .
Meas ure ment Uncert ai nty Anal ysi s – Power Reference Leve l T es t Meas urement Int roduction B- 4 Agi lent E4 416A/E 4417A Servic e Guide : The equation above i nclude s the worst-case mismat c.
Meas uremen t Uncert ai nty Anal ysi s – Power Ref ere nce Level T est Mea surement Introd ucti on Agile nt E4416A/E441 7A Servic e Guide B-5 A normal dis tribut ion is assumed, as the 345 8A Manua l has not s pecif ie d the ty pe of dis tributi on us ed on the measurement .
Meas ure ment Uncert ai nty Anal ysi s – Power Reference Leve l T es t Meas urement Int roduction B- 6 Agi lent E4 416A/E 4417A Servic e Guide Cons ider t he mode l bel ow: An est imate of the modul i of Pd and Ps are each le ss than a spec ified va lue.
Meas uremen t Uncert ai nty Anal ysi s – Power Ref ere nce Level T est Mea surement Introd ucti on Agile nt E4416A/E441 7A Servic e Guide B-7 So u(Ms) from the equat ion above equa ls: Misma tc h Un.
Meas ure ment Uncert ai nty Anal ysi s – Power Reference Leve l T es t Meas urement Int roduction B- 8 Agi lent E4 416A/E 4417A Servic e Guide Res ist ance The uncer taint y of the resi stance meas .
Meas uremen t Uncert ai nty Anal ysi s – Power Ref ere nce Level T est Mea surement Introd ucti on Agile nt E4416A/E441 7A Servic e Guide B-9 T able B-1: Measure ment Repeatabi lity Re sults Me a surem en t ADJUST REF . REF . LEV EL TEST 1 0.9995489 51 0.
Meas ure ment Uncert ai nty Anal ysi s – Power Reference Leve l T es t Meas urement Int roduction B- 10 Agile nt E4416A/E441 7A Service Guid e The readi ngs in T abl e B-1 are in mill i-W att s, the refo re the S ta ndar d Dev iatio n (wor se ca se) is : - U (Rep) = 0.
Meas uremen t Uncert ai nty Anal ysi s – Power Ref ere nce Level T est Mea surement Introd ucti on Agile nt E4416A/E441 7A Servic e Guide B-11 Usin g the above va lues g ives Ci V co mp V co mp d d PM 2V 1 V 0 – () 4RCF M s --------------------- ------- - 2.
Meas ure ment Uncert ai nty Anal ysi s – Power Reference Leve l T es t Meas urement Int roduction B- 12 Agile nt E4416A/E441 7A Service Guid e Co m bined S t andard Uncert ainty ( u c(y )) 1 Us ing Agil ent’ s stand ard 9 5. 5% conf idenc e the cove rage f actor is k = 2.
Index I ndex-1 Agilent E441 8B/E4419 B Servi ce Guide A A1 power s upply/Batte ry Charger assem bly 4- 3 A2 p ro ces so r as se mbl y 4-4 A3 fron t pan e l asse m b ly 4-7 A4 interf ace assembly 4- 8 .
Index-2 Agil ent E4418 B/E4419B Servic e Guide fron t panel rep air 5- 6 G GP-IB c onn ec t or ch a r a ct er i sti c 1-14 H humidit y c harac teristic 1-15 I IEC 1010- 1 1- vii in strument accur acy .
Agile nt E 4418B/ E4419B Serv ice G uide Inde x- 3 repl aceable pa rts 5- 2 ret u rn i ng f or se rvi c e 1-xi Rmt I/O 1-14 RS232 c onn ec t or ch a r a ct er i sti c s 1-14 RS422 c onn ec t or ch a r.
Index-4 Agil ent E4418 B/E4419B Servic e Guide.
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