krohn_hite_4200 电路图.pdf

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1、I ,-_-l )-. xkoHN-HlrE cN 1O Hz to 1O MHz TEST C)5CILLAT()R Model 42OO t Frequcncy tangct lOHzto lOMIz r Powor ovlpvl, Vz watt o laxlmvm output: l0 volts rms t Frtqvency rcfponrf, 0.025 db s Hormonlc dlstortlont O.lVo t Amplitvdc stabllltyr 4.027o t Frcquancy accarccy2 2Vo t lnlsrnsl lmpcdoacc: 50 o

2、hms c Avxlllory outpul e Exlcrnal synchronixallon The Model 4200 Oscillator is a low priced solid state labora- tory or production signal source with performance available onty in units selling at twice the price It provides a sine wave over the range from | 0 Hz to l0 MHZ with ,t wtl of power at le

3、ss than 0. I 7o distortion An infinite resolution dial and push-button multiplier provides rapid and continuous fre- quency tuning. The half watt of power over the enlire range is outstanding for a general purpose test oscillator, and this coupled with an excellent frequency response of 0.025db, mak

4、es the Model 4200 ideal for meter calibration, response measurements and amplifier testing. Amplitude calibration of 0.2db accuracy is obtained by an 8 position push-button atienuator calibrated in l0db steps. A continuous output control combined with the attenuator provides 90db of attenuation. ()S

5、CILLATOR The 50 ohm impedance minimizes gjgnal losses due to re sistive and capacitive loading nnd the half watt of power is essential for driving loads without overloading. Unavoidable capacitive loading limits the usefulness of any oscillator without low internal impedance and high power output ca

6、pabilities. A fixed I volt output independent of the main output can be rused for synchronizing a scope or as an auxiliary otltput. For increased frequency accuracy, a synchronizing input is available to lock the Model 4200 to a precise external fre- quency source, Careful attention to packaging des

7、ign, rtrgged conslruction and use of all silicon transistors makes this unit insensitive to vibration and shock. The Model 4200 with its broad fre- quency range, flat response, clean signal and low price is ideally suited for laboratory end production applications. , ,tt 6 I .oe U 9o ts d .or I t .

8、l t E2 z o l F F . i F o 6.2 t. t.l o E .ot rl t et .ol tor tO. toi FifOUENCY lHrl tYPrcl|- ol3TonTloll tor rd tor lor riEOufrCV Hrl TVFTCAL TiEOUEf,CY iESPOIISE F-t 1to f.Tl -.- rrcl g l-Tl -* xultrtrtli ? I gpEctFrctTroil I r|lrrT3 lpEcrFtcriron trurtt I to. rd RadioFans.CN 收音机爱 好者资料库 3 mOdgl 4U00

9、 osLLAroR SGECIFICATIONS |rr,qucncy ranget l0 He to l0 MHe continuously varlsblc. MUL-npLIER FRreuENcY (llz) I l0 100 1,000 10,000 1oCI,000 t0-100 100-1000 1000-10,000 10,000-100,000 100.000-1,000,000 1,000,000- 10,000,000 lrsqocncy Goritrot, A cinglc turn dirl calibrutcd from 9.6 to 104 to rcad dir

10、ectly in llerte and a sir position pushbutton multipllcr. A frequcncy vcrnicr drive couplcd to thc dial faeilitates closc adjustment of frCquency. Frsqucncy colf brollqr cccvtacy, *29o lrom l00Ht !o I MH4 riring to =!% at l0Hz nnd l0MHz. Froqvancy *|abllllyt vs. TlMe: Short term. within =0.002To.|n

11、any pcriod of onc hour orlctg.within *0.OlTo. w. Tsutamtune; Wiibin +0,05fo per dogrcc C from l0Hz to lOMHz. I 3 xl * n al sy n chcanlrollont A 1.5 volt pcak to pcak external signal will lock Oscillator over a range of approximatcly +O.S% with a rlight change in distorlion and amplitude for a sinc w

12、t e rynchronizing rignal, lllala oulputt Powm: 9t watt (l0Htto l0MHz). Vottrce: l0 voltr rmr opcn clrcuit, ! volr ecrom J0 ohmr. Cunrnxt: 100 mlllhmfi*r$ rmr. IMPEbNcE : Conitrnt 56 66s1; *. lVo. Ourprn Crnctnfiv: Dirdt Coupled. DC CoMpoNEtrt: Nominel zero volts. At maximum output drift ir ters than

13、 2 millivolts per degree C. less than I millivnlt for e lt?o linc voliage changc. Drift reduced in proportlon to purhbutton ettenuator reltinS. DrstonnoN: ,ess than 0.17o from l00Hz to l00kHz, rising to OSVo al f OHe and 27o at lQMHt. Specifcations and prlcc arc subiect to changc e,irhout notice. Hu

14、M ND Notsr: Less than 0.0J% of attenuator retting. tiOn CycLE To CycLE AMpr.truDE St,rntLtlY : Lcss than 0.1 7a . Iist Vortlca: Fixed I volt RMS. lursorxce: 600 ohms. DC CouroNext: Zero.rgcc Fneeurrlcv Rr.spoxss: Within 0.025db from lOHz to 500kH: rising to f0.2db at l0MHz. ;: , lhen AMpLrruDE Coxrn

15、ol: Eight position pushbutton attenuator ca ! - ibrated in voltagc and l0db steps from +20 to -50db and a *- v inffnite resoluiion vernier calibratcd in RMS volts from 0 to , and 0 to 10. Attenuator accuracy: +0.2db of pushbutton settin ing t from l0Hz to l0MHz. t i anc6 Auxlllary ovlpat, I AMPLTUDE

16、 StrntI.rrY: vl. TtuE: ln any period of one hour or less, within *0.02% I any period of 20 hours or less, within lAlfo, vr. Lttr: For a l07o change in line voltage, less than +0.019 from t0Hz to lOMHz. w. TEMpEnrTUnT: Within a0.l% per degrec C. Amblcnl ttmpctolura rongat 0C to 50C. lcrrnfnalsl Mtlx

17、rno AuxtllnY Ourput: Front only on Bench Model f,car only on Rack Mod-el. Extenxrt Svxcgnoutzenox: Rear onty on Bench and Racl Modcls. Dlnicndnnr ond Wcfghtr: Bench Model 42AO, E t wide, SVt high, l3% deep I I lbs 5kgr net, lE lbslSkgs ehipping. Rack-mounting Model 4200R 19 wide, J14high, ltVz decp,

18、 l5lbr/6,8kgs nct, 2l lbslg,Jkgl shipping. Prlcc: $350.00. SBSHIHtS,gS 580 Massachusetts Ave., Cambridge, Mass. 02139 US.4. Telephone 617/491-3211 - TWx 710320-5583 1.r ,eveI ,., allC( , , PrO 1r CaI t Powcr tcquiromlnltt l0J-l2J or 210-2J0 voltr, tingle phasc, 50-400H2, 30 wltts. tf O I.2 PUt au: 8

19、01 trm ou Au ml Prlnlod In 1,.3,A RadioFans.CN 收音机爱 好者资料库 r 0.02%. I -r-o.01 /o, 0 J00k Uator lb and rm0!o 0n MODEL 42OO sscTroN I i GENERAL DESCRTPTION 1.1 Introduction This manual provides operation and maintenance instruc- tionE with detailed epecificatipns r sqhematic diagram and parts ligt for

20、the Model 200 Test oecillator, lllustrated ln Flgure I. when the suffix *3rr iE added to the model number the ossillator *f.nrovided with a front panel suitable for standard rack mount- ing and l.e identical to the bench model in operation apd perform- ance I t , Reference to operating rnstructione,

21、 sectiotr 2, is recommended before this Oscillator ls put into operation. fn the event the Oscillator ie not functioning or faiLs to meet perform- ance epoclflcationsr reference should be made to the Maintenance procedurep Section 4,. Hatutever, before doing any troubleshooting, it should be deterrn

22、ined tf the normaL adjrretments mentioned in thA callbrat,lonand AdJuatment procedure, section s, wirl correct the trouble. L,2 Deecrlption The Model 4zaa is an all. ellicon, sorid etate, genera1 purpose Test ogcillator that provides a main sLne wave and an auxiJ.iary sLne wave from r0Hz to l0MHz. r

23、t operates fro:n an ac souree qf ll5 or 230V, 50-400H2. The main sLne wav output is variabLe from 0 to 10 vol.ts rms open-circuit or 5 volts rms across 50 ohms. Maximum povrer output ie L/2 watt wtth leeE than 0.Lt harnonic distortion. The AusiJ.iary output tg a sine xrave fixed at I voLt rms openci

24、rcuit. rt tt 42A0 /9,str RadioFans.CN 收音机爱 好者资料库 ) 1.3 fechnical SummarY FrequencY Range I0Hz to I0!4Hz continuously variable MULTIPLIER -I- i10 I00 1 000 . 10 1000 100 000 FrequencY Control Asingleturndialcallbratedformg.Stol02it,oread directlyinHertzandasixpositionpushbuttonmult,ipier.A concentric

25、 control provides a vernier drive for fine adjustment, of TREQUENCY (HZ) -T6mr- 100-1 ,000 1,000-I0 000 L0,000-100 r00o - 100;000-r 000 000 trooo rooo-ro r00o 000 frequencY. FrequencY Callbration AccuracY *.2* from 100H2 to LMHz rising FrequencY StabiLitY t to t3B at L0Hz and I0MHz V$,. ti,me: $hort

26、 term within t0002t In any one hour or less within tOOIt VS. ,lemfleratqre: Within t005* per degree C to lOMHzr VS. lilq: For a 10* change in line voltagel Vs. lo3q i. :r No loacl to full Load t 0 005t External SYnchronization I A 15 volt peak to peak external signa) wiIl oscilLat,ion ovr a range of

27、 approximately t.5t with no distortion and amplitude fot a sine wave synchronizing See $ection 2.- period of from I0Hz t0.002t. lock change in signal. Sine Wave OutPut Pqwer.! 1/2 watt (10H2 to t0MHz) I . vqltage: I0 volts rms open clrcuit 9urent: 100 milliamPeres rms i . rmP.edlnge.r Constint 50 oh

28、ms tI* ggtput.glrcuitv,: Direct coupled D9 .Compongnt,i Nqminal zelo volts. At maximum output drtft ls leEa than 2 milLivoLte per degree Cr less than l milivolt for a lot line voltage ch.ange. Drift reduced in proportion to pushbutton attenuator eeLting. I 00Hz . Distor-!,lon: Less than 0.lt fromffi

29、 to 100kHz rising :;: to re .51 at lgHz and l% at l6ltHz, : Nnpt ttude stabilitY V$ Time: In any perlod of 20 Vg Liner In any period of one hour or lees within t002t hours pr lees, within t0.It. f rom l0lla to 10MHz. I VS TemPerature: Hum and Noige: For a 10t change in Llne voltage $stt6.olt Within

30、*0.1t Per degree C. Less than 0.05* of Pushbutton Attenuator setting. vgle.FocYelejNTPJtds.stabilji.Fv:Iressthan.0.18 .requqncl.R99ponqq:.Withint0.02sdbfron10Hzto50okHz, rising to *0.05db at 2Mtlz and t0.2db at lOMHz Amplitude Control! Eiqht poeition pushbutton attenuator calibrated in open circuit

31、voltage and 10db steps from +20 to -50db pIUs an infinite resoLution potentiometer calibrated in RMS volts from 0 to 3.16 and 0 to 10. Attenuator accuracy: t0.2db of pushbUtton setting from IOHz to loMHz. uxlliarY outPut VoltagelFixedat,lvoltRMsopen.circuit. ImPedance: 600 ohms DC CcmPPlent: Zero Po

32、wer .Requirementg 105-125 or 210*250 volts single phase, 50-400H2, 30 watts Arnbient TemPerature Range oo0 to 50oC Terminals MaJ.n and AuxiJ,J.iary output: BNC connectors on front only for Bench !odel 4200 and rear of chassis for Rack Model .4200R , ExternaL synchronization: BNc connector on rear ch

33、assis , , only t Dimenaiong and Weighte Bench Model 4200 , 8I/2 wide, 5 L/4 high,13 L/2 deep, II lbs/Skge net, 18 l.bsl8kgs shipping. Rack-mounting Model 4200R, 19 wlder 5 L/2u high, 13 L/2 deep, 15 Lba/6.8k9siret, 2L ,be/95kgs shlpping. I tocArroN t i OF CONTROI,S AND INDICATORS r* -rsil -rf ,llJ :

34、il :.ft-l ;3-l tutll?rlcl 0tl r#*-rE-r- ar|:t:!l1;id3 trrQutxct #,J) *tOluuI l :71 $ /,.-t-, h i- t i , ; ,), = -2. 1, ti ,. ? i, ;i,1,1i,.1 TAMIUTUDI -l auxiliary output signal adjustment of (1) Frequency Multiplier: Selects one of six frequency ranges from IOHz to IOMHz (2) Frequency Dial: Varies

35、output frequency within each frequenc iig. piif reading multiplied by Frequency rrliirprrlt is the output frequency (3) Variable Amplitude control: Adjusts the amplitude of signal applied rJ*f,i6;P;il;6; ; (sJF (4) Output Attenuator: Attenuates the outputr6f the Teet Oecill.ator in 7 steps of L0db e

36、ach (5)MainoutputConnector:Providesthemainoutputsiqna ar an impedance Levet or- io or,*r , (on ; ;iy for frack unit) Auxil-iarY outPut,: Provides IV RMS ;t-il-irn;a.n. leveL of loo ohms, rrequeneY Vernier: Provides a fine (6) (7) (8) frequencY. the of power. Povrer on and Pilot Light: Switch applies

37、 PoweT to OEcitlator r,it-fi*p giot to indicatL application SECTION 2 OPERATING INSTRUCTION$ 2. I Ceneral, i On receipt of the Test Oscillator, carefully examine it for any damage that may have occured in traneit. If signs of damage are observedr file a claim with the transporting agency immadiately

38、 and notify your Krohn-llite Representative or Krohn-Hite Corporation directly. Do not attempt to use the Oscillator if extengive danage hae occured and. do not ship the unit back untiL the cafrlr has inapected it, The instrument may be opened for lnepection witlrout nulllfyinE the Waruanty. i- : Ra

39、ck-Mounting models (designated by a suffix nRr after the model number) mount with four machine screws in the staridard lgtt rack gp6c6. No epecial brackets or attachrnents are needed. 2.2 Operatlon Figure identlfieg and dee.cribee the function of alL the front paneJ. controls, connectors and indicat

40、ors for the Mode1 d200, ! fo operate the ModeL 4200 proceed as foLlows: a) Make aBpnopriate power connection as described in Sect,ion 2.4. I b) Turn Power Switch to ON position. Pilot Lfght will glow indicatlng appl.ication of primary power. c) SeIEct the deslred frequency with the pushbutton Freque

41、ncy Mutttptler and Frequeniy Dial. Ior precise frequency setting, connect a frequency counter to the Auxil.iany Output and use the Frequency Vernier for fine adjustment, d) Bet the puehbutton Output Attenuator switch to the minimum volt6go ranga that would include tho desired output voLtage. e) Conn

42、ect load to output eonnector f) Adjust Amplitude controL for desired outPut voltage 2.3 Bxternal SYnchronlzation An External Sync connector on the rear of the chassis is provlded to synchronize the frequency of the Oscillator tQ an external eignal. connect the external signal to the External $ync in

43、put eonnector and set the oscLlLator dtial to the frequency desired With an external sine or 6quare wave synchronizlng signal of 1.5 voltE peak-to-peak, the OsciLl.ator output wiLL be Locked in frequency to the external sigrtal over a locking range of approxi- matel.y tr5t. The 0sciLlator distortion

44、 will not increase with an Vvt wtll lrcr.e13c-h external. elne waye synchronizing signal e#o .5t forl-a square wave externaL eignal. When the Oeclllator frequency is the same as the external algiral frequency, the Oscillator output will be 180l out of phase wtth the external synchronizlng eignal. A

45、t5t variation in the ogclllator frequency wlII vary thelr relative phase by approx- imatelY t90 degrees, With a ld volt peak-to-peak sine wave external synchron- izing signal, the rnaxinum recommendedr the locking range will increase to 2t and the dietortion wt remain the same With a square wave ext

46、ernal signal the same locking range of 2t will be Tbtained but digtortion will rise to approximately Lt Line Voltage and Fuses The oscillator ls nornally wired for operation from an A-C power source of 105-125 voltg, 50 to 400H2 and usee a 05 ampere slow-blow fuee that is mounted on the rear of the

47、ehassis It may be modified to operate from an A-C source of 2I0 to 250 volts by removing the two jurnpers between terminals I and 3t and terminals 2 and of the power tranaformer and connecting a Jumper aeross the 2,4 il terminals 2 and 3. A 0.25 ampere slow-blow fuse should be used for 2LO-250 volt

48、operation. An identifying tag attached to the Iine cord. will indicate when the OscilLator is wired for 230 volt line oPeratlon | . Accesa to the interior of the OsciLl-ator is accomplished easily by loosening (not removing) tne two black thumb screws centered on each side at the rear of the chassis and then pulling r l . : : , . . . out the two eide covers. Remove the two eheet metal Fcrews holdinE the top and bottorn Covers and remove the covers. : ii ,.i. I l:t ii-. l, ; . cebrl !ri.tlst I :(-elol clr6 | irrltrc ,llrb I foc io n tvl C?ri ,4ln+ RSlO l.B tr h Y . r,?*v -i. i