DTICSELECTIEsMAY2 2 19

AD-A250 314

Alpf"RV\ IVQ omjnQfITonweaf) :.

Switch Interface for Monocliroinatorand Radiometer

G.A. Clark

:\1 1 l icf h , (KtL'7IK

Albstract

Acea6i~f For

WTc I"~

Ja ,; t i f lout 1613-

Avilability Cd" In- J- ,mfil ad/or - (V)Dit Special L

MAH 1%11\1 -

9 2 () 0 98

\I'IRO\II)101 I't IAI RI I IASI

Con ten ts

4. -1 \\I'XI\K' 14

,"I "' . 17

.. ... ..

Switch Interface for Monochromatorand Radiometer

1. Itroduictioni

I IC C run k-n kn '11 rIjuCt I O l) ItI I D)atIIa Irasltro 10 32 bi t IIIPLIt/'oUt put t t

b0,a-0d I I, ('11,1leC an1 MM coImpatible' Personal. on11I-Iter to control an optical

rnn" hllnnltiur )2 ;II tI% I) op 3,I I I II Ir t NI I t Is t3]. k It Junl I~ -t --C I Lt Io

I It I t Ile t r I II 1 t Ci I Ia rI t r , A1r1:;'I ta I IJpLIt aI I ItIt p IIt ( I ()I

I pi t i~ m1 IH Ir cI ' .1 It J.1 1 t Ii IrA I% uI IeIII't Lr - l t I Llltul to t a 1 p t I ,

III , I ), I [, ~ . e I- Ia .t !i'l , I t Ii LI t 111Ja terra lJ Js a ri I .t I uup IIc Ipn ie t

w 1 Ii k r I Io t o I T I L t .u IIIWI R II Ii- Ii li iL It I ttl L IC Qpt rI I IrI

Ii t I Ii L r I I 'I - I i t1 2 1 , to t ir I atIII tion 4 1 Innte I g t Iu a I1 1IIC

Idi I tid- t 111 Cn rat I I It 11 h1 Cron ol torL ir ' t 1011 111 chruimalt r p it

tlt'i Itn rAt'lt gu"It intO IT I kuik~r ,pctrnin A narroxv Wa)VelengWth band

l1 IIt~ m depInuL1Ing onl lilt krIth) 0 f light COlS theL monochrom1ator an1d i-.

d rete 'C iAt n1 irnIIia tI( n c It , keni t tnt )a s pec Ila ir oIp t icalI s I rfa ce or deLV iCe. Befo re

th In lII'\% it cl it Htu lighlt r-' -plt off, b\ mea,1ns of a beamII llplitter. onto

Hi~t dc 1 h to t ,I 1,d( tI ) ! n i I I hi riJl nrter read ig ii prp rrtl

ix I I t I Ii g I t I H I th - allu-[I. Ii I gI r IIItRe'fle t f theI

I II PI itt I rk - t It ;I Hl I ' I tt l Hiii en 1 t ( retlecteu I I g I t Ior C t I 111)11t

t H ~ l r I t t IW Ir Ia O R IUt, ti mi rai Iiree \Il f I\ ke1 the

1ic !a I IH I t;" 1 I itl\po t rort the1 Iretlectrit~ tO 2 t MC I re

-~ i I ii I . a llI tht A i11 1r11 in t po-It Iorn A.- r i k c t lir t

Iii 11 t I rt r ar t ICi t- Ii i Ih r t t k Ia I II t Aul ta I l

L Radiometer No. 2

SI detector

Reflective

'A'

Li Ii ~ t t'i ~ ir .\ I II ' U tlI it Ii t -t) ItIUI k It I , lIt I\ C L LkItit -' l ' k It I

I 'i 1 \ t''~ t I 1 1 ( - I 11l iI lt t It kt 1kt k k tl L t L ' t ttL ti It ' Lc

i[tJ tIl lilt It Ii 0I'tilt lF 1 () 't Ilt I I it 't l I I t ill ' 1-, 111i liC ' I I ( I ) ltlllt p It 'It' t

t tJ tli r i t-it h ' A I I IH C III() 1111kIIIJIIII 'L V AbIL * htt l W k)I

Si Detector

Radoeer No. 2

32 :'2 :3bte M1onochromatorfrom Oal~mation

Boar Digital C nrleIn terfa ce

BM Compatible P.C Si Detector1Radiotr N-

.I z~ rt 2: Ut !Wit oi 01 U01'1 i 11 8'11101ir dlpl~

2. D~igital Switch Interface

a~ ~ ~ ~~11 11 rii a~rt'ui nU il Ii ititl ) at titnn re'l n-tt i

r'in tAle war pir,11'il 1( the ld nlll wtt~al)(i1F~nit

I 11 7tI td 11'.11) tit nIt'll 'XIC. ['% *l'i~ l> tibbnal>'a IJ C a tA[jt'l>It io i I

tirH t'>' wt Jt1 I data tik .11t Lfrom11t Ii i L itdtiitlc 'ts In c1'.cnct '12 Ill ta['"ld!tpi a 1P- 1 n iintitat h, ilt k l t t l to tl 32 it, I, i , \\,vt Ilthl

DI h 11 cmmuInitioin ruqu ircinciits of the l110noChromator and Vach rad 111ioete

I the monochromator required I18 da1ta output lines, four11 Control input line';a1nd groUnd,

I ea.4h radiometer reqLuired -'() data outpuit lines, four control 1Jiput lin> 1ad

I is keident that if all three n'.trimniint wereC conne(-cted onspaa11 ieinto thu toinpUter 70 input output (1 'U) lines pIlus three ground linus wouldhe rctluiretl ThI logick Ilucuk ur Ill tor all the instrumenC1ts

I 1"0~ ot the data train-latioii hoard is configured as four I;r UOS pot.plus14 ground I meN Each port is composed of eight digital 1/0) lines. AnY'complete port lot eight liA) lineUs) Ci uid be switched by software to an input oroutput mo1de' All eight 1/0 lines in any' given port are eitherT all In the inputmnode or all in the output mode as mixed modes within any givenl port is notpossible. In order to change the- state of one output line, all1 eight lines in anygiven port are addressed even if logic: level changes are not required for theother seven lines in that Port.

For this project the 1/0 lines are arranged in the following way; three ports(total A4 1/0 lines) were used for 20 data input lines to the PC, and the

remaining port was used for output from thle PC Of these eight output lines,four lines issue commands for instrumnent control, e.g. slow or fast w~avelenigth

scanon he mnocromaor.Three of the remaining four lines control hSwvitchinlg (multiplexing) of data to/from each inlstrumient. Five IA) Imes wetre,

no0t uISeo.Figure 4 shows thie circuit Of the digl-,ital switch Qrcie ua d t-tt

bulfferS (74 [ S 1 2; wert, used for theC threce banks of digital switches. Vad 11hank if digital swOitches (24 >witches in each hank) con trOl , the 110o% oflt abet~ven the 'IV and an instrument, e.g. radiomecter I. Furtherm-oreL, ea,7ch h1,1nk

of x~ichs hs asigle control line input; coto lie'I for themoiiochromator and RI and R2 for the respectiv'e radiomneters (Fig. 4). Thelogic- levels onl the control line inputs; are determined by the outputs: M', R Ianrd R2' (Fiig. 4) from the IV,. If Ni' is low, RI' and R2' high, then'I coltlt I n I

data from and Control of the monochromator canl occur as the outputs, on thltother intrumnlts are switched off I ]i a milar manner, inputs R I' m7d R2'I.itk' to In tr a'ld 2 rcspec'LtiVc'lV. I 10kwcv\e(r, to) J\ lLi 11 _litlttll

hi\ L lici Orv ilt)[.(' cOItri I ll~f ts, go l~ in; thereby lk Cusing a coflHict (11(101'ro

i't ~ ~ ~~k lluptts h111. k:Otlllll~l lol(~ k% 0, t,1[10 impovd kimtlrtc clt' I) W1

J I Id I ) 20, 1lig 4 ). Illli> ~onltrol Ilgc liures, that all the correct wivtchinll

command dsribed ove arekl a'11Clted upon11 All other swtitching cimlli,combinadtions r-Ceel ed trin the P't( Will s v itch M, RI anld K2 high tlhc ri'bcaulil the radiome(ters and the mon01ochrIomator to be elctn lincallt \* iolatewdfrom the P&' 1he occurrenMcC of an1% illegal) co1mand %% Ill be' indilmttd i% til'

bi''nr' , L.b tol chOldk ,111% data t roli or ciiitroil t01e iisll eimt (.I ,l'tl l i i~k-',l'.

Iet I' is1 11tInlenCTt cillutrll lilies iklFig 4) allow% control of e'ither' radioterttl0tite limk,1,0lchri~tor I lii, reader~ is retcired to retrcesltC 2 an1k 3 I dl It'

3. Modifi.cations to thc Radliomters

3.1 I0t'scrilytti of the P~roblem,

ll1o111 s i niii l *r k , iiit t rgiI l llter\ aik tilt'i a e t'ig I I o % h k 1 rell t 11 til

inltroduced ,ml error thait was depen('1dent Onl the rate' of the wavelengthl ' caniiingI ,ti~ )r t,i~t an iid t he relu"()ltio I k I I(,IIt with us1 wed ) o f thet Im no chiim 11 k, Io

b[i ca iis t Ik'rc l,%a a tui1lte tII it, dcl-11 itv, cten read ing t he t.x avelcnlth a ,i i thenl

rciIjcs t IIig aiidL re.ceiin 11 i read, Iing from11 th ri IadkiokuIIII er. 111his delay\1 Wiail1t tmI IJt

ri l o w ter( lxi~ n ato Ies1lt t i il an r n lthekJ aC ri(-ng, 111CW~i NV the t I It'int ill t 111 t ,iWin t ekn hiO 1101(i allo td'rric 1111 i df, til' f th'

I It ) II ct k) (, ' II ,t It r I i I I )t It I Il , f-o l li II I ( I\ IIcrt, I q Il

I snlle rentedCI wa ,to llao e the i orlothronlatr s~can pe-rtortntd in) 1

nll U ,titudeI of sinaH steps IFor L'\ample. at thle start ot the coulputer pit gra i

tile WaCength 110t ho rad anld both radiometers woul1d also be read -1 he

monioch romnator wouk LId thenl Ke Li IreCted bIN tile soft wa VC' tt I rIcee CVlTIt a 111M~ I

amount and then stop All three inlstrument readings would aga~In Ke obtainedlo

by thle llk ' is prOCCLIU rC k% as repe~ated ove r thet t ranlge. (t thC stLanl

required thereby remo' inI' the reading delav error betweenI the monochromator

reading and the radliomelters.

Hloweve r Ii ONercomin ineastirement errors b,, m~od ifN-i' the COMPLIter

programi L Olltl tiling, the mChanJical Method Ofit measuLremen'lt, anlother >oL( ' otI

PotentialI iis'truirlen t erro r (not tilding detector accuracV) bcamel 0), Iden-t 1In

eaIch raimtrthe an a10Lo'' to digi4tal1 (A I)) convertor X\~ Id saminpie aind

hold it, r-'pcti% 0 dLtor110 sign1 11 anld then1 coverIt It to a igital tormat sulitaleo

hr. tiran,11mioin to tile PC 11bis 1,1imlpl, hold anld Lont% riO1 process v itin

Int A I I is Loniltid by\ a n terl c11 ot k CVCle It the A I ) k~Lol\r L'ton a re' 1t-IlaTupitg datal at thet' itit' tiiile, tile reaingst otieLLle adl to large errors

e'"pLc'illk wvlcirL Imipt "igilais to the iu1OtloI-hmomatOr areC ch~angingi raJpidly. III

Ordier to ensure this could no0t happen, eachi radliometer wa',s mod ifiedt slightly so

thaIt tileN Loulkt be linked together- inl a master sia1\ c .oittiguiratioln til ii tile

data 1,amplIlng IuAaIml' s \ Throlou>011 File oIticfLatioiIlo tOlVt'L 11ltrOdui4 l'' 1

,:11,11 1iL it illt to Laci raIiitlol'ltt-lr 11111 iiltttiiticatil is LiI'sribL'LI ll

'tti, n -

.3.- Ruiome~nter Circuit Nhodifl ca tion

I;J 1101LI 1!ica1t 1 ) - t tlI 'kdi 'Ilt'tT1%t'r il'~ s lh ty MO dt'pli i td 1,11!11 Lne tt, thI~

ni Ji i t-d tfe w 0 ( i iu trL bt-t\\ vll t Ill ] tIL k.iast' Ldate' ott thei T.,ld I(tiilLtL'r5 I I II

'11111 ,-liv I2, u dI t'd it II I!1 \ o'II I C o.1 ylii reLI i le l a \Cl I'\te t i Ce 11er11'Ik

11 1 kItIp t t ' t 'I ot t'I I L-I % 1 t 11 g iet e 11i (tA , I kilplse c t o l e (1 ha Ito 'l

It hth bus ptii ms trR ti1 71 I k I TI iI trntoie I ti a I in pu I LIsl a

I42 tll I I I, t a' it ps s t raIIllsultI 1) ' l kt' i ~ed t tilt' seck- nd rad i metr 1

t'i 22ial # cable titIll I( rea ot tilt %\rs haiitmeerC Isole CtIlJ1 sttnkLts ald

rlilm tot-I Iattr reeie A x 1 't use to aooit alyptt'mtalpobelstt

I~ he Stl(b2tlabOld 11Ctil te to vitoliusin tersigeg i tile A P prducng

iilatt'r~iil' staitl. A Ililtusei t'tiig ditd monte seontit triiltM [alINo

tilt' radittMitetr HIliCa1.MttL tilt' 11,1\ CMode.

r

F- y SWa ov

1 I I

_ _0 v

SWITCH INTERFACE FOR rIONOCHROtIATOR/RAOIOMETER/IBII PC

I. -i4

COMP CES[IRLPT ION RAI

C. APACITOR ALL". ELELTROLY7!E 4700,F L5AU.2 TAN! ELEl TROLT, 1.0 F 5

,3-10 TART ELECTRCLY71C U.IF 35

Ai 'RIOGE RECTIFIER V.T 6 .5E lHI REO NEON LAMP FP7IUU/NR 072

NI. VOLTAGE REUUTOR Ll3407-5 .5

TI TRANS FORMER PT215 ! RA0D-1 TRISTATE BUFFER SN74L S125AN

DIR TRIPLE A-INPUT NAND GATE 5074SIO _

020 HEX INVERTER SR'S744SI OPOT SWITtO [&KB TYPE 2A

XF 1-2 25 PIN 0-TYPE CONNECTOR FUN MOUN'

IH NT ET, 2r3 15O~f UNTW' AY KEYED IDU CONNECTOR PCB MOUN'

ASl 25 PIN 0-TYPE CONNECTOR PUB MOUNT

X2 TERMINAL BAD W~ILED 0OS15I2 .1IP4 S PIN CLIPSAl ELECTRICAL PLUG I?

AEftil_ 'LEE PANEL PCUNT FUSE 4IFOOEF

FUSE SIZE DT IA

RI RFS;5'0I METAL FlLM ION

I'A:

~ - -7

-444] ~ +44 +H4 - - i-H-'7 I I' IIl

MRL-3593 - 01

E R / 1 1 1 1 P C5 0 W A Y KP Y E G I IIU O N N E T O R T O l S M P C

~ A,

- I

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HI - I

4. Summary

A digitalIw'~itch ink rface lwas been tonstructed enabling an IB[M\ compatibk'u PCto multilei\ control to, an)d tllo datal ICLIniSitiOll friom, two adionit'r ind a

imontnchronator 1n ladItIonI, HI' 'I)Cncral dUiljn (It the' witch iniraI' InablrIt to bo n cd Iv aPC to control an, other thrce instrUMInots -Li ad'ta

5.Acknowledgemients

1 ho lIntlo! x-ji to th'Ink \r i it' ora IsIn tho \!I. ~drttIII7 Olth~Iti t

1 Tk on tt (I - I i, II pa k I~ i orI tho( di ittta I Wi tCl I II otoItahCi

iT. -ti r ~v it %ta t III,) toC 1 i- WI 'ditId f th t il ] Ofn~ th1-dai n

Hnid hil' NII 11-traoti-11t ',vo0Ik-,hklt la1t Lot no0t IC-a'-t Vr \1,)\ ILtILI

1t-iho Irnk 1tii it-. kl in ; r11 oi t),J ICI lI' ttgLr> tor tis roLPkilrr

6. Rctem'en ccs

: i . t II-\t I -' l 01 1

1 t I I 1 11 1 1 1 1 11 1k tt jl k lt

1 i tI ,IIII

I I I I I I 1 1 t I k I I I I I I i I s .,i Ii I I I

I t II 1 \ I t I I IIIt 11 1

L 1 JII bI I'I d Ik LIII II I It )I y Iit rk If Ino kd If Ill n tr)- andrjI I )tCr I I I a ' I I IIS() cI I It CI % \I tC'~I JIID % )I It( )I I%1triI J

I~L'>LarrI i Iabrarv, V*i

FL1

dQ~lVA O1NU. I H3i3WGfI'66 Z 69i93JOIIY 3

E - -- --- -

flO[RMAO flflflTE 1. lflflTE 3

32 1/0 INTERFACE

STYLE 2 ENII2LA As 5oI-o32

-q2 FRONT PANEL SCOTT PLY

2 B.22x PANEL 22227 PLYCOR G2 RIP AS 6Q7'74

5 SIFEW. M3 A OLIS PAN Pt, Z2.22 PL-, 5305 7 '79

6 6A2H22 M3 ZiN( PL72 73'5-99c0 sb

7 HEX ALT M23 ZiN22 PLY 5 73-A .- !2 E SPACER r3 LENGTH TO SW'.: . ::

SCE M222 I2 b12 PAK H- Z,62 PI. 31-- 2 1

5 -

1 '

i l l -SEIhhlClT 5i~90m

11J l1 iEl l :rP D9o4ill SRE H3 z 7h

/0 INTERFACE SWITCH INTERFACE FOR MONOCHROMATOR/RADIOMETER/IBM P[

MRL - 3593 - 01

:l/)/)f li- 2

Pinmted Circuit Board I c'sign

00a0a0000

000000,0

0o0 0

00

-0 0

00 jj

000

0~00 Li .. C1 0

100 +0

-0

- --

a- 0-

~00

'FtL~ i~ i -l- \[ ~ I[ i~i.~ ULNCLIASSIFIED)

P() L MIN I O k(ih)] P)A 1A s liti H

kEPRN I NO, A , NV) Rii N O1 i I- L Ni I I 1 \SlI. Ii C.I I )N

NI R'L-TN-5;98 AR-t)06-843 Lnclassi tite

Sw itch interface for mlonochromator and radiinmiter

M\ Mli ' ivONR ( v<Pv'A I 1: A L liv i N

(A,.-L Cr k P ST IC\lMter,I Rcsva IrJ I a~i r

PIi, \ 7,(

REA If, N I~ )A r- i -KV

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w ilI C , \- it iv 11ki N 'ilst IA - ! 11 M R II'M I I C 11IA

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