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Agilent Technologies 08495-90025 - page 1
Agilent T echnologies 8494/95/96G/H Attenuators Operating and Service Manual Agilent Pa rt Number: 0849 5-90025 Printed in USA Print Date : August 2004 Supe rsed es: J u ly 200 2 ...
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Agilent Technologies 08495-90025 - page 2
ii 8494/95/96G/H Operating And Service Manual Notice The infor mation containe d in this document is subj ect to c hange withou t notice. Agilent T echnologi es makes no warranty o f any kind wi th re gard to th is materia l, including, but not li mited to, the implie d warranti es of merchanta bility and fitne ss for a p articul ar purpose . Agile ...
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Agilent Technologies 08495-90025 - page 3
8494/95/96G/H Operating And Service Manual iii What Y ou’ll Find in This Manual… • Overview , page 1 • Specifi cations , pa ge 6 • Insta llati on , page 10 • Operating I nstructi ons , page 12 • Replaceabl e Parts , pa ge 15 • Service , page 16 ...
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Agilent Technologies 08495-90025 - page 4
iv 8494/95/96G/H Operating And Service Manual Wa r r a n t y Custom syst ems are war rante d by contra ctual agr eement bet ween Agil ent T echnologies and t he customer . Certific ation A gilen t T ec hnol ogies , Inc ., cert ifie s that this p r oduc t m et it s publi she d spec ific at ion s a t the ti me of shipm ent from the facto ry . Agil en ...
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Agilent Technologies 08495-90025 - page 5
8494/95/96G/H Operating And Service Manual v Service and Support Product ma intenance agreement s and other custome r assistanc e agreement s are avai lable f or Agilent T echnolog ies produc ts. Any adj ustment, maintena nce, or repair of this pr oduct must be performed by qualif ied personne l. Contact your custo mer engi neer through your lo cal ...
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Agilent Technologies 08495-90025 - page 6
vi 8494/95/96G/H Operating And Service Manual Instrument Mark ings Safety Earth Gr ound This is a Safety Cl ass I prod uct (p rovided wi th a prote ctive ea rthing terminal ) . An uninter ru pti ble sa fet y ea rt h gro und must be provi ded fro m the main power s ource to the pro duct input wir ing termi nals, power cord, or supplie d power cord s ...
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Agilent Technologies 08495-90025 - page 7
8494/95/96G/H Operating And Service Manual 1 Overview This manual contain s operati ng instr uction s for the Agilent 84 94G/H, 8495G/H, and 8496G/H at tenuator s. Include d in the man ual is in formation requ ired to insta ll and test th ese at ten u ators . Specification I nstru ment spe cific at ion s are indica te d in Speci fica tion s , page ...
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Agilent Technologies 08495-90025 - page 8
2 8494/95/96G/H Operating And Service Manual Overview Figure 1 T ypical Four Section At tenuator Sc hematic Diagr am Ta b l e 1 and T able 2 on page 3 an d T able 3 on page 4 show t he typica l switchi ng arrangemen t to increas e the amount of at tenuatio n in an 8494G/H, 8495G/H, or 8496G/H in a linear manner . T o ensure specif ied perf ormance, ...
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Agilent Technologies 08495-90025 - page 9
8494/95/96G/H Operating And Service Manual 3 Overview T able 2 8495G/H Atte nuator Swit ching Order T able 1 8494G/H Atte nuator Swit ching Order 8494G/H Attenuato r Sections Atte n (dB) 1 1 dB 2 2 dB 3 4 dB 4 4 dB 0 1X 2X 3X X 4X 5X X 6X X 7 XXX 8X X 9X X X 1 0 XXX 1 1 XXXX 8495G/H Att enuato r Secti ons Atte n (dB) 1 10 dB 2 20 dB 3 40 dB 0 10 X ...
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Agilent Technologies 08495-90025 - page 10
4 8494/95/96G/H Operating And Service Manual Overview T able 3 8496G/H Atte nuator Switchi ng Order Each sole noid requi res a drive of 20 to 30 V wi th a swit ching curr ent of approxima tely 125 mA * at 24 V dc per sectio n. The soleno id switc hing time is less than 20 mi llis ec onds inclu ding sett li ng t ime. O nce sw itch ed, th e solenoi d ...
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Agilent Technologies 08495-90025 - page 11
8494/95/96G/H Operating And Service Manual 5 Overview Figu r e 2 T ypica l Sole noid Coil Dr iver C ircu its CA UTION Do not exce ed the RF powe r rating of 1 W averag e or 100 W pe ak with a maximum pulse width of 10 µ s. Do not connect an attenuator RF input or output c onnector t o greate r the ± 7 Vdc. I f the att enuator must be c onnected t ...
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Agilent Technologies 08495-90025 - page 12
6 8494/95/96G/H Operating And Service Manual Specifications Specifications Frequency Range and Attenuation Attenuation Acc uracy (±d B): (Refer enced fr om 0 dB) Inst rument Freque ncy Ra nge Atte nuat i on 8494G dc to 4 GHz 0 dB to 11 dB in 1 dB steps 8494H dc to 18 GHz 0 dB to 11 dB in 1 dB steps 8495G dc to 4 GHz 0 dB to 70 dB in 10 dB steps 84 ...
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Agilent Technologies 08495-90025 - page 13
8494/95/96G/H Operating And Service Manual 7 Specifications Maximum SWR Maximum Residual Attenuation Attenuati on Repeatability ± 0.01 dB typi cal afte r 5 mil lion cycles RF Power Handling Capability 1 W aver age, 100 W peak with maxi mum pulse widt h of 10 micr oseconds (all m odel s) Solenoid Drive Instrumen t F requency Ra nge (GHz) Maximum SW ...
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Agilent Technologies 08495-90025 - page 14
8 8494/95/96G/H Operating And Service Manual Specifications Solenoid Cable C onnecto r R e fer a lso to Fig ure 3 . Figure 3 Solenoid Cable Pin Conf iguration Section Section 1 Section 2 Section 3 Section 4 P ower Solenoid Coil Thru-Line Atten Card Thru-Lin e Atten Car d Thru-Li ne A tten Card Thru-Lin e Atten Car d V+ Cab le Wi re Col or Code 1 PU ...
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Agilent Technologies 08495-90025 - page 15
8494/95/96G/H Operating And Service Manual 9 Specifications Minimum Life >5 million cycl es per se ction Switching speed Maximum 20 mill iseconds includ ing sett ling time. Environment Limits The instrumen t should be stored i n a clean, dry env ironment. The followin g environme ntal limi ts apply t o storag e and shipmen t, and o peration . Ph ...
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Agilent Technologies 08495-90025 - page 16
10 8494/95/96G/H Operating And Service Manual Installation Installation Initia l Inspe ction Inspect the sh ipping con tainer f or damag e. If the s hipping co ntainer or cushioni ng materi al is damage d, it shou ld be ke pt until the conte nts of th e shipme nt have bee n checked f or compl eteness a nd the ins trument ha s been check ed mechanic ...
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Agilent Technologies 08495-90025 - page 17
8494/95/96G/H Operating And Service Manual 11 Installation Installation Instruct ions The atte nuators may be install ed with or wi thout the base. T he base is removed b y unscrewi ng the t wo filli ster head screws f rom the b ottom of t he base. The at tenuat or may b e mounted withou t t he bas e by i nsert ing two 4-40 screws i nto the sc rew ...
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Agilent Technologies 08495-90025 - page 18
12 8494/95/96G/H Operating And Service Manual Operating Instr uctions Operating Instructions CA UTION Do not appl y RF power gre ater tha n 1 W average, or 100 W pea k with a maximum pulse width of 10 microsecon ds. If the se limit s are exce eded, the attenua tors ma y be damaged. CA UTION Do not grou nd both solenoid d rive pins at the sa me time ...
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Agilent Technologies 08495-90025 - page 19
8494/95/96G/H Operating And Service Manual 13 Operating Instructio ns Procedur e 1. Connect equi pmen t as shown in Figur e 4 on pag e 12 with t he at tenu ator set to 0 dB atte nuation. 2. Set the t est osci llator to 0.3 V rms at 1 kHz. 3. Set SWR meter range to 2 dB (expa nded) [or for the 84 94G/H to 10 dB (expande d)] and adju st its ban dwidt ...
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Agilent Technologies 08495-90025 - page 20
14 8494/95/96G/H Operating And Service Manual Operating Instr uctions Perfor mance T ests T he ins tru m ent ca n be te ste d to th e ac cu rac y of th e “Specifi cations” on page 6 , wit h an automat ic networ k analyzer or equiva lent equi pment of suita ble ac cur ac y . If an aut omat ic net work anal y zer is avai l abl e, test t he instru ...
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Agilent Technologies 08495-90025 - page 21
8494/95/96G/H Operating And Service Manual 15 Replaceable Parts Replaceable Parts Ta b l e 5 lists the r eplaceab le par ts which ar e the onl y parts t hat can be replac ed without a ccess to the in terior o f the ins trument . If any pa rts not listed belo w nee d repl acem ent, re tur n t he ins trum ent to Agil ent T echnologies. T o order a pa ...
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Agilent Technologies 08495-90025 - page 22
16 8494/95/96G/H Operating And Service Manual Servi ce Service T r oubleshoot ing T r ouble shoo ti ng con sists of per fo rmin g the “Oper at or’ s Check” on page 12 . If the instrument does no t perfor m within limits, r eturn the instrum ent to Agilent T echnologi es. Repair The onl y recommend ed fie ld repa ir is repla cing t he ou ter c ...
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Agilent Technologies 08495-90025 - page 23
8494/95/96G/H Operating And Service Manual 17 Servi ce 4. Close the gap between c oupling n ut wit h the n ut on the exte nded-s leeve connecto r . T o dis connect: 1. Loosen the co upling nut of the con nector showing th e wider gold band. CA UTION Part th e connec tors car efully t o prevent strikin g the i nner conduc tor co ntact. T o care for ...
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Agilent Technologies 08495-90025 - page 24
18 8494/95/96G/H Operating And Service Manual Servi ce CA UTION Do not use aromati c or chlo rinated h ydrocarbon s, esters , ethers, terpenes , higher a lcohols, k etones, or ether -alco hols such a s benzene, t oluen e, turpent ine, dioxa ne, gasoli ne, cel losolve a cetate, o r carbon t etrachlori de. Keep expos ure of the connect or part s to b ...
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Agilent Technologies 08495-90025 - page 25
8494/95/96G/H Operating And Service Manual 19 Servi ce 3. Allow the jaws of th e tool used to cl ose and pul l straight back from t he connecto r without twisting. The contact should co me with the t ool. If not, repe at the pr ocess. Do not reuse th e cont act. 4. Snap in a new conta ct by pushi ng it in place. T est the actio n of the ne w contac ...
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