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SECTIO}l
ilt
TI|EORY OF OPTRAIIOI{
3.I
INTRODUCTION
'Ihis
se(tior] Cascrllr('s lhc
ci('ctrlral
()pcriltlrJll
()l
the
.i..rli" "i
tht' 5l'lB Eloctrrrnic CLrr'irttet
Filst
th('
n,
,'r.ii-,, p".*t r"n ol thc irrstrunlont is L'\l)hillc'l 'rith
,l"i".",l.'"
t,, thc block
Jilglxnrs
in Figule ll-1 ln(l
i-a',f,,',,
tlto,'l,Cl'.rli'rrr
"l'itr)llrl't'rrrt
(
ll
rrls s lr''
,,,.ii"j
r,r
det.riL.
Tl1, n)xl,
rlrll
ill tllls >"(lr'
r)
ls
rs
lo
l
lo
\!'s:
3-)
O\'('[\ll
CiICLrit OPeration
3-3
'finl('Brtse
So(
tion
3-4
Phitntirstroti
I'roquenc\ Di\
1'lcrs
3-5
D.(rlclc Fr.(lLlcncv
Di!id.t'
3-6
.\l]lpLitr.lle
Discrilllinator
3-?
Signal Gatc
Sectir)n
3-u
S
ignll
Gite
3-9
Giltc Contr.ol
Llil)ilrl
3-10
DisPlav
Tillre
Ci!(rurt
3-11
liesct Circuit
3-12
Tinle llrter'\'aI
Input
Circuit
3-13
Porvcr
SuPPIT
3.2
OYERALL
CIRCUII
OPERAIION
Tht,
522i1
EIe(:t!onic Countcl- consists o[ the
l)irsi(
.,..Jii".tto,,"
shoi\'rl
ir)
thc
olock;liagrarlt in Figur(l
3-1.
!
sig,r"r lipplied to thr'
52JB
INPU'r
contrr( tor'
;";J;;;ch
",i;irplilic.
and
shape.
to the
Counted
i,-"riJrif
ir,"
I
isnrlrrrl
l)Jrr ol rlr(
srgttrl
Lhc
;;;;;";i:.
*ues
thr"uIn
rl(
shupel
'rrrcn'rr]L'ed
btrt
.t,,J" ,nr;
,v.r
el<,r',n
is
usecl
tu operate tlec'rdo
c"unt-
;;;;rii;.
it
must ue
changed
to
a
fast-r'isc
(ronstant-
aiplitucle
pulsc
to assure positive c{)tlntjllg'
The Counted Signal
C'{rte
V1014 conducts
the
input
sinrnt to
rl',c
indicrtrrli-
(uuitcrs
vllllc J
ILlcJSuft'trent
it"L,"
i*
,rrO".
ancl
lrl." lis
thr
rnpul
sigrrrtl
rliilc
the
"r"*"i1"
being
displal
ed
while
the
Si'inal Gate is
,,r"".'
V+OO
"","
,t
.' n;rnlal 'tr)lpllIlcr:
'vhen
closel
,i
i,li"
.,"
an,)pon
cilcurt t
'
lhc
irrt)ut
sliru'tl
Tht: Signal Gate
is
opetled and
closc'l
l)v pl.ecision
sren.ris
irritilrecl in
the'l
i
nt'
BJSo Sc'
tion 'vlllcll
uctLl-
;i: 4.,;
Control Binerv
V
t03
irnd
ploduct'
:
Ielec
lrst.
orl-oII pulst'
Lo
olrerate the
Si'-na1
Grte
Tile
ii*,
.,,],
"i',i:
,^,
rnn
Tirrrt.B.,sc
SL.r'1rur1
,'rrrs('s
tlr.
;:i" ;';.,;. i,"t',,,,'
sir:rr'rl
Grr(: thr
s'!''rrl sr:,'tl
;;, ;;;'i',,,,
-i,,""
'
'"'"'Iho
Srre
Bin")'\'tr'
( ILrs.
tir" st..rri
C,,,,. s"
lotrq rrs
stAn'rls
(
'r
ll{
lronr
lhc
li',',,,-i'b.,",
.-'i"'
siirrrtL
C''rr
'\ill
r'"rrrrr"' I
':''
'lr'
rr(11
'.urd
cIosc,l.
fr:rrirl-
SiAIr,.l
L;.rrn
V
lr''- "^trJucts ti
'
sl rr'1
:rrl
l
slop
,',.
t,r.
-.1t.,f. ll''r,l
lr.r'Tirl)e Bas( lu llle
G'1(.
Birl'll\
i;;;;..'.,
','.,;;r,'
'rerrr
i'
Lroirrr
rn'r
It
Vl0-lr
i'1
" i's
;,;;i;i,rri"g
sigrrals ulcl
prev'nts
a
ner' (orrrt lIorrr
"i".li,,g- 'trrir"il,c
answel to the pt'evious count
rs
Lrcing
iiisPtaverl.
'l'i,rllrri SllrrJlG,tlr Vl'
iB
ls
'pcrlo'l 'lnd
'
l"strl
,lr)
t,;;;,i.
i,:;;,,
ti'
Drspl
r,,'
TIrnn
cir'
urr'
Tl"
Drslrl']
i,l,ri
ol."tar,t,,.u,,t r'ilhcr
"i'crrs
'tt
cl"scs
th'
Tint-
,,r-
ii*ricr,"
a,rt"nlJti.rIlr 'rl
rcgrrinl
rllltsl-''jls
"l
.,it"t,iiit ,,
llrc lront-l)rttrnl
TtESET
buttun
wl)crt sr't
i,,lj'",.,i,i,rr,i,t"
opclatil)n
the DisPlay
Tiuc
ciI'(ruit
,:',;,;;,.i",i t',
srsn'ils
lr'('nr
rlri
GirlP
Bi.ar\':
ihr
n
ii,"
';r;;
;in,i
,,
.ll"s'
s
tlr''
sisnlLl
Grrc'
th.- Drspl'rv
ilt,,*
O*r.,,,
rilosr:s tire
Tiuring
Signal
Gate
lor
thc
ir,rr"
*i".iia
il'tht'DISPLAY
TIME
(:ontlol
The
r,.t
t'i,,,i"* signrl rvill
not reopen
Ure
Tinrinr Si';ruI
CJtC
r l Stail 'lllollrr'l' c'rll)t lrcli)r( thc
11(
s
l'c
I (rrs-
;i.t;;;r. li.;
,'n('n
c('rrrllcr\
l'
wlt.rr tlrr'disDi'rr
t;rrr(
I.;,'.'t
"rr,"'bitpr,v
f rritc
Citrutt
reolx'rrs
!hc'rrrnrng
i,,r,riCrr,
.rtr.i
tlto
rrcxt
tirrttr)g
stlnal
r)l1r'lrs
Llre
cnlln-
i"i ii*i,.r
Grtl. to
starl rnolher
mc'rsurPrnnnl
'
Whelrele!'the
Gate Binar-v opens
the Slgnal Gate
to
;;;;';;',;,"""tre.uent'
it fr.st
operates
the Ileset
6lr:"rt,
i"
rctuln
the counters to
zero'
so
the
neiv
",,*ni
tiff
i,cgin
!t
lcro
rnslcad
o[ ircrl]g
addcd
tu lho
;;;r:i"r, ;.r,;'.
Tho Resi't
Thyratrol'
upun
.c{
er\ irrtr
i' ,',,.,ti."
r)ulsc
Ironl llle
Gate
Binan
gollel'Jl('s
a
i.;g;. t;.i
positile ptrl"c
'rnich
is appli.d to Ihc
rescl
circuit
oI eilch of the
counter.s'
The signal to be
counted
is led to slx inljcating
plug
-
r"'.*""ii.g
.,rit"
corlnected
in cascerde The output of
iil"'rJ"l
ri,ri
;orulects to the input of the second'
and
""
"..-i,.ar.r
cycle oI the input
sigral
advances th€
;;;;"i;;;
fi'rst
(units) counter bv
one
numeral
;;;;,i;"
il"
,,r-ber
on
the
iirst
counter
is
advanced
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