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METER PANELS
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TA BI E or
MrJ MP '
C QNTf'STS
MP l M P .
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P ANEl S
Warrant y
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WBS 2· 101 VU Pad bca rd
Pan$ Li st
M~ t~r
Panet La you ts
2·'
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GetI~ ral
Sea le Opl iODS
Ci rc u it Dac:r ip t;OD
Se I-up Proc:ed llre
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Drlwin l S:
Schem a tic
Co mpo nent LI YOUI
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B14-060·0H lOI
B 14-o60-06-OO1
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6-1 to 6-2
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Ge neral
C ir<;lIi. Descri ption
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Co n nec lo rLlyoll ls
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CODlpo De nt Llynlll
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SECT ION I
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MAIN FR AME ASS EMBL Y
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Power is supplied f ,o m a scpa ,a le 24 vol l
SOO rnA powe r supply ada pter (I vailable
f ,o lO 1l.'8S ). Ope rll io n rr om an u ternal
sou, ee tCQu ircs H to 23 vollsdc ....i tha
noi se Ind r ipple of 2SO mV RMS Or less.
T ypical .uppl y eur renl requirements f or
one amplifie d VU meie r is 100 rnA ( ind ud ·
inl ill umi nation) a nd fo r one am plified
PPM is SO rnA.
The VU me ters a re a lso a vailable ....it hnul
amplifiers a nd ma y incorpo rlle I WBS 2·
107 pldbol,d sim pli(y inl t he inSll lll tio n
of requi red loupid netw ork s. T ypical
Supply current req ui reme nts f ot thii co n·
~~~ralion. i oclud i nl m umi nllio n is 10
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T he melers a re housed i n a 3.~ i nch high
(l wO rack un i l). alumi nu m ehanis an d
desilnedforS landlld 19i nehraekmoun l·
ing_ The panel s sh llo w dePlh (app,oli.
malel y ) i nches). pe rmiu Ihe un il to be
eas ily moulu ed i n mosloptralin l lrnS.
ME TE R P A N E! 5
Connect ion' lO l he met er s is made via a 12
wa yba ,riet suip convenien tl y mouered on
t he Tcatpancl.
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Meier pa nel. MP I, MP2 and MP) ar e
supplied wil h 4 . ~ inch meter s wh ile lhe
MP4 pand i. supp lied with 4.0 in ch melen.
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Mel
Th e MP!. 1>11'2. MI') a nd MI'4 Mei er P.1nd ~
have beee desi gned to ac commoda te onc
10 f our stl ndar d PPM 0' VU meter s fo t
use in , ad io a nd td ev ision b,oldoailing
h d li l ies. T be mele. pi nel. m y be I rr a na cd 10 ho use I co mbiflilion of VU melen
a nd 0 ' PPM mele rs u , <;quit cd.
W ARD- BECK SYS T EMS LTD.
W RS 1- '01 Vl! lApRO A R D
M P I MPl Mn m :t METE R PA N E l S
PAD80ARO COMPONENT LAYOUT
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Mr !
P A NT
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PE S C R I P T IQN
M P,f ME TER P AN E! S
MEG
MFC P AR T NU MBER
4.0·Pe;akPro. ram Meter
4.,·PeakPrOl ramMeter
4.0" Ampli (i ed VU Meter
4.'· Amplif ied VU Meter
12 Wa y TerminaJ Strip
Tcrminal SUip Pips
Fuseholder
f Ul c. 0.7, A f B
AC/DC Adaptcr 24V SOO rnA
HK P
AGC.7S0
MP l ntcrna t ;ona l W4' DQ SQ02/ 1
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WBS recommends the usc of r epla ccmen t pan , made by [h e lpecifie d manufa Cturerl f or
con tinucdoptimumcquipmcntpc rf ormancc.
W ARD- BECK SYS T EMS LT O.
MP2 &; MP3 METER PANEL LAYOUTS
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MP4 METER PANEL OUTLlN E
1 - -
-
-
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- - - -
-
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- -
- --
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M4 33 PPM
M435 VU
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LAYOUT SHOWN FOR PREH CONNECTOR No. 7143 0- 0 20 .
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(- 4dB)
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NOTES:
1. METERS #1 TO #4 ILLUSTRAT E THE WIRING REQUIRED FOR THE
VARIOUS TYPES OF CONFIGURATIONS THAT ARE AVAILA BLE.
2. PA NELS UTILIZING FOUR METERS WILL BE EQUIPPED WITH
4.0 INCH METERS. PANELS UTILIZING THREE METERS OR
LESS WILL BE EQUIPPED WITH 4.5 INCH METERS.
3 . AC/DC AD AP TER SUPPLIED AS REQUIRED.
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SCHEMATIC
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M433L PPM
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PE AK PRO GRAM M ETE RS
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TEC HN ICAl p tH A
M4Hl M1l 4 PEAK PROG RAM mTER
0.H, +',+ 14d Bu {re r.600ohmso " ree ).
0.H, +I,+ 14d B,, {re LlSOohmsou rce).
Frequ eney Respoll$e:
+/.{l.3 dS rr olll 30 HI 10 ISk H<t.
Noi$C:
40 d S bel o.. re rerellce ('4' on BBCsca le, Met er Sea le I ).
So" rc e l lllpeda nce:
6OOo hlllsorlSOoh ms. ba lanced/u nbl.l lne~.
Mu ,mu mlnp ut:
(meas ured
I I
S k H",).
O" "t O"r l l ion
(msee)
Slud y Stllt e
<0,
<0
,,.,
Instr ument Rel d in.
(io dO relll.live to ma rk ' 6' )
c
o +/-0.5
dB
-2.5 +/ 0.5 d B
_4 +/ -0.7$ dB
-9+ / ·1.0dB
DeIl YTi me:
2.5 10 3.2 seco nds r ro lllm uk '1' 10 mar k ' I' (me u ured a t I kH",).
Powe r ReQuire ment l:
+24 to 21 vOlts re aul at ed Or unrel ulaled.
n mA no mi nl 1.
100 mA ao mi lla l ir L ED ill umin a tio n.
AmbienlTemperlture:
O toSOdelreeaCelsiu s.
4S .. ide l2.9" h ia h l2.'S " deep.
(l 14mm1 74 mm 1 70 mm ).
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0.7 lb. (3201).
1l.66 lb.( 300a) ·
(A mpll r ie r card onl y)
0. l lb.( 4 11).
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(Ampliricrcl rdonly)
4J)"w idel 2.6"hiah I 0.6" deep.
( 102 mm166 mma ISmm).
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4.o- .. ;de1 2.Th ia h12.'S"deep.
( 102 m ill 169 mm 1 70 mm).
SAI4 -060
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"'. B1M41. PEAK PROGRA M mTE R
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The rnelCr may bc: ope ra ted fr om allY rel UISledor uDTClulated de supply voltaic
f rom 2410 21 volls.
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The merer reference painl ( rnu k '4") may
l>cc ilibri led f or l ud io Ievets fr om Od Bn
10 +14 dB u f or ISO ohm or 600 ohm cireui ls.
The PPM meler sca lcs hive whitechanlcrtfS 0 0 a ma ue blle k b:aekl rou nd. Some
scal e oplion s i nclude a ye llow ms rker
whic h provides a ..isllllindicS lion fo rlhe
ons et of overlOld condilio ns.
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T he M433 PPM eo nsiSIS of a 4" met er
move ment d ri ven by a n SA I• ..()60 meter
d rive a mpl ifier mounted directly on Ihe
rear meie r terminlls. The M4 ) 4 ut i lizes S
4.S" mere r movemenl snd Ihe same dr ive
amp lifie r uou!lined ebeve,
Seve ra l merer sca les ar e Ivai lab le 10 provide fo r var iolll ind uur y slandud l.PaBe,
)- 1 10 ) -4 illu s"a le Ihe set le opl ions. The
sca lec onf is ura rioDlue de fi ned allo rhe
ha lf scare rererea ce poin t. Fo r exa mple
Mele r 5e l le5 has a ref erence poi nt of +4
dBu .
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II ilde,iB ned to meUllre t he peak ..a lllel
of a ud io pr oBrlm mlleria l. Thi s is de termined by 11'Ie comp le" in le rre la tio nshi p
l>cl....ee n th e ba llistic pr operti es of Ihe
meier movemenl an d th e ehara Cle r ist iCI of
th e associa ted a mplifier eircu ilr y.
PPMmeter $C'lllesuel ypicall ydi vided inl O
6appro"im:arely equal major d''''sionsof
• d B eaen. Th is allo," a rU l e of 24 dB or
+/"12 d B f ro m the lIalf scale eeneeuee
ref er encepai nl.
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T he MH)/ MH. Peak PrOlr a m Merer h,u
bee ndesiIDedIO~ra l eandcomply ...il h
Ihe specificalion SCi fo .. h by the Brili sh
Sls nduds lnslitule(_ BS.297).
W A RD- BECK SYS T EMS l TD .
SCA'
t: O PTIO N S
M4:\lIM 414 PE AK PRO GRA M METER
Tile M433/M434 Peak Progra m Meters ate
available wit h a numb er of ~e a le ty pes.
Number ~ have been auigned to t he diffe re nt typ eJ of scares and sho uld be soecif ied at t he lim e of orde r ing.
If no seale option s are seec.r tee . lhe met er
will he sup pli ed wi th til e Sla nda rd BBC
sca le as outlin ed in Briti sh Stand ard s
Inst ilutionBS429?Figure I-I betow deratt s
tlli s seale lMeler Sca le I).
Th e follo wing pages outl ine l h e~e sca les
an d t hei r res pectiv e orde r ing inf ormatio n.
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METER SCA LE l
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SeA l E OPTIONS
M4 331 M 4]4 PEAK P R OGR AM m
TE R
fi g. 1-2
METER SC A L E 2
Ref er ence -8 wi t h 0 10 +6 yellow mar ker
-16 ·12
-8
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-4
,-2~ \ \ \ \ I 1 , 1
0
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METER SCA L E 3
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M 4B /M4H P EAK PROGR A M MurR
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0 .. 4
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..12 ..16
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-4
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Fig, 1-5
MET ER SCAL E S
Rc fer cncc +4 with .. 12 to ..20 ycllo w mH kcr
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W AR D-B ECK SYS T EMS lTD .
SCA lE OPTIO NS
Mi3M !4 14 PE AK PRO GR AM
_8
0
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•4
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.8
II ,,/ I;~
dB
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Fi g. 1·6
MET ER SCAL E 6
Reference 0
-4
TEST
0 •4
\ \ I
.8
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Referen ce 0 'r eu
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METE R SCAL E 7
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SC A,!
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OPTIONS
M 4B1 M4 34 PEAK PROGR AM METER
-16 -12
-6
~4
0
;2Z,\ \I ' l t l ,.....
TEST
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MITER SCAL E 8
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ae rerence -8 Tcst w ith 0 to ..6 yello w mar kcr
W A RD- BECK SY ST EMS LTO .
CI Rel lI !
PE SC R I PT I O N
\ H 1JfM1H P EA K PR O G RAM METER
SA! 4-0fil P P r.! AMP l lfJ!1 R ASSUI D I Y
CRtf.. tft $r b""lr D U _06 0 . 0 2.p!ln
The inco mi nl balanced alld io silUI is
I n en lli ted by I lott net woTk eo ns;stl nlof
R l , R4 I lld shulIl rcsi.l.lors R6 Ihrou ,h
R I1. The Shullt lou rcsiltor iS lClecte d by
senti li "i ,y l u a p SWI. T hi' IIrIP delerm ines
Ihe sianlllevel appliedloprcamplirierUl A and IheTef ore ~librl!CI the I mpli rie r
fo r varlo lls input opcr.ui n, levclllnd
imped l nces. l'r« ill on resist on R61 0 R U .
in ser ics with SWI. pro vide the shunt k l
oC t his netw or t . T hese resislors we re
selecl ed to prod uee l lil nl l all enual ion
wi t hin ~ /·O.2's d B oC t he s ~ lec l ed se nsilivit y.
T he sil na l whic h is a mplir ied a nd buff ered by UI ·" is f cd t o a prec tetcn f ull
wi ve reeli ri er c ireu;l. T h is rect iri er cirellil
eo n.i sllo f U2 and iu a" oei a ted co mpoe er us.
co nncc tion OOilll when il it nccesSlr y 10
relllOlC the PPMmClcr fr om IheSA I4-060
I molif ier lucmbly.
Th e SAl4-o6(l requi res 24 10 1I V e c. ni,
voha , e il re lllliled dowlI 10 +11V de by
rcll;ll:llo r U<lI. Rcsill O" R,S1 10 R,S9 K I U4' s
OlllOUl volll l e whil eC30Icit ors C's lnd C6
pro vide oo...er supply decoup lin l . Diod e
C R l prOICCII Illinll ;na dv en enl voltaiC
re versat . ....hi le U4 co nla ins ; ntel rs l eircuilr y to prOt CCll lll i nstshoTlci rc uill and
ovcr voltal e. The halr vOltallcpoi nt Cor the
SAI 4-060 is set by deco llpli nll tra nSil lo r
0'·
T hc rC. lllt in l preci l ion re ctiried volta lle
driv es I bruk -poinlampli ri er Ul- B via Ihe
thr esh Old co nlTol R 22. Th e lIain of Ihi .
a mpli fie r ilvu; edluc hU loappro,,;male
I 101lri th mie eo nveT$ion of th e recliried
volt l l e. T h is is achieved by havinl the
ImOli fierll in""ylecordin arO lhelmpli·
tlid e oClheIPoliedinput ,; ,"ll volt ale.
Brea l<Uansi ll o'S Q I ro O6llonl with the ir
respecer ve em itter a nd coll« tor resil lon
Ire swi lc hed sh llnu lerott t he feedback
resillor R36. Trim COlitro ll R23 10 R2t
(SET 2 ro SET 1) ill.dePClldelltly set the
tllrn-onvoltllefor elc!lofthelC brcak
trllllillOri.
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U J · B pr ov ides Ihe mCler d r ive CUTTenl
throllah cu rr e nt sOllrce res;n or R's6. Thi s
OlllP lltlp pca r, l t th e int elnl met er mOlln·
tinll pa d a nd I t eo nne"or pin J . The
connecto r Icrmi na l ser ves as th e meter
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The OUIPllt of UI -D is bllffered by U J· A.
The a lli ck alld deg y charlCler isl ics of the
PPM meier arc delerm ined by rct ill OrCl plci lo r netwo rk RoSl,R,S4. C4 110111 with
the me ter ba llill ics. ThelC para mete rs Ire
le i fOrl h in DBC stilldi rd _ 85 4191 a nd
CBC Developmell l Repo rt _604 1.
W A RD- B ECK SYSTE MS lTD .
S ET _p r PR0f[Q IIRf:
MW a.!i H r U K PROGR AM MET E R
The M4H / M4J.4 PPM mel e,. are h elor y
ca librlled an d norm ally do no req uire
'enlibntion. T he sensili vi l Y strap SWI
"commodl tcs iop ul levels of O. H , +a lod
+ 14 dBu fo r ei l her 600 or ISO ohm i m·
pcd l ."es ....ilhi n +/ 4J.2S dB of Iheseleeled
value . l fi lb!:«I mes neussa ry lo real ibrite
Ihe PPM meIer pr oce ed as fo lio.....
No te: T his prl)«d ure is base d upon I
se nsil;vi lystrl Psell inlor O d Bu,600
oh ms. l r I di Herenl scll inl is used to
eal ibrl te l he meler ,s ubsli lu le l he app .op . ;·
I teleye l..
needl e on the +. dBu mark on. Ihe
mete r sa le (con.n rm l;nearily .. ;n S),
9. In.er u SI' i npUI level lo+ 12 d Bu.Adjusl
See 7 cootro l R21 CW to sellhe merer
need le 00 the +12 d Bu mar k On Ihe
mete. sa le. tneeease level by 2 d B.
Melerneedle shOllld be .. end ~r ker.
ConCirm linear it y of Ihe scale by
I IICIIUll inl l ia u l in l d Bs teps l hrOlll h
r ul! sca le do ...n 10 ·16 dBII. Metcr
needl e lh ould . el chth e · or r-ml.ke.1I
-16 d BII +1- 1 dB. Sia nl ls belo... Ih il
:~~C~~~~:'ld 1101 cause ' de ne ,, ;oo or
I. StrapSW l to l heO d Bu600 ohm posi tion a nd ensure Ihat all tr im ce m rcts
are sel r ull CC W. Ensure tha t Ih e
meeha nical eeec or the met er is SCi
pro perly
2.
Ap ply I I k H z signa l a t ·12 dBu. Term inat e inpu t wi th 600 ohms
).
Adj ull l hrcs holdcontro l R22 lo de(Jeel
Ihe mete r 10 Ihe -12 d B mu k ('I' o n
BBC seale 1·7). Th e ran ge or Ih is ce etr ol l hould be app roli mat el y +1-) d B.
4.
loe rn se lhe;np ul le yelb y 4d B lo .1
d Bu. T u . n Sel 2 eo n tro l 8 2J CW unti l
th e meter needle moves 10 Ihe ·a d Bu
mar t on the sea le IT 00 BOC sca le),
S.
l ncru sc iopul levelby lDo l he . 4d B lo
-4 d Bu. Tu r n ScI ) co ntrol 824 CW
scui lll l he Ileed le 10 Ihe ·4 d Bu mark
00 t he mete r ~ Ie IT on BOC sca le),
Confi r m li nu r ;l y by an enUlI; nl l ;l nl l
in I d B ste ps 10 -I d Bu. meier sho uld
lr l!:k S;I IlI I.
+.
ps
d Bu. Adj ust
Incre ase in put revel to
Se t 6 co n tro l R27 CW 10 set the met er
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Increa se in put level 10 +4 d Bu. Adj usl
Sel S co ntrol R 26 CW 10 sct the mel er
need le on Ihe +4 d Bu ma . k on th e
mel cr scal c (eonfi rm lin eari t y u in S).
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6. In cr u se ;np ullevel loO d BII.Adju st
Scl 4eollttol RH C W IO SCl l he lIKte.
need le on Ihe Od Bu mltk on Ihe meler
sel le (eollr i rm l inear i ty u; n S).
WARD - BECK SYS T EMS l T D.
Md](U fli PEn PR OGRA M MU EB
PART
R ESCR IPT IO N
,\l EG
M EG P ART N U MBE R
PPM Am pli r ier
Mtl trMovtmtll1
ror M41J (4 ' )
ror M414 (4.S)
Bath.
SimPllOIl
T3~ I 06M0 3SA S
T390 BIOSM03SAS
T3 9OCI06M0 3SAS
T39OC I06 M0 3SAS
10 ll FflS V
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M433! ),{434 PEAK PROGRAM METER
S UP P LY VOLTAGE
OPT. LAMP VOLTAGE
EXTERNAL METER DRIVE
EXTERNAL METER DRIVE
SHIEW
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PPM INPUT
1
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B
PPM INPUT
S UPPLY COWdO N
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65817-010
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BERG
PV-47712
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C9
Rl
47K
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47K
C2
R4
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R5
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10/35
R17
10K
SET 2
R23
R6
1-4KJ 1X
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6K49
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600 ohrna
20K
lK58 1%
STRAP AS REQUIRED
R10
R11
10
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3K57 1%
P,
SET 3
R24
+ 1 1V
JK57 1%
R9
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LAMPS
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R7
R65
330
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R13
+14
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20K
150 ohms
SET 5
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SUPPLY
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RESISTOR
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-
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SET 4
R25
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NOTES:
1.
SET 5
R26
2.
3.
ALL RESISTORS 1!4W 5% AND
ALL CAPACiTORS ARE IN uF
UNLESS OTHERWISE SPECIFIED.
LAST COMPONENT DESIGNATIONS:
C9. CR7 , P2 . 08 , R65. SW1 & U4.
C4 SOT MUST BE SELECTED TO
0 .90 TO 0 .97 uFo
WARD-BECK SYSTEMS
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W A RD- B ECK SY ST EM S lTD .
UC II N l q
l
pAT A
M 41 YMHf V I! MUtR
InpUI&nlili¥;ly:
O. +4••••• 14 dB u (ref. 600 ohm sollree ).
O••4..... . 14 dBlI (ref. 1S(l ohm sourc:e).
Ver nier ranle: 4 d B min.
Freqlleaey Respon se:
+/-o.2S d B 30
H~
10 IS
k H~
G reater Ihan 15 d B below 0 VU ru.d in, .
Ampl ifi er Hu mon ;e
DiSlon;oD.:
Less than 0.2S' 30
Source Im))Cd. nce:
600 ohms or lSOo llml. bala nced /u nbala nced .
Inpullm ))Cd.n ee·
Greller IlIan 20K oh ms.
H~
10 IS k HL
Maxi mum Inpu!"
Billi slics:
T o ANSI sta nd ard . C I6.S.
Ampli fi er li eldr oom:
10 dB above
Pow er Requir eme nts:
.24 to 28 volu re.u lat cd or unrc .ulltcd.
IS rnA nom; nftl f or SA14· 121 a mpl ifier ass embly.
80 rnA nom; nl l f or L ED ill um;nal ;on.
Ambie n! Te mper al ur e:
0 ro SO de , reu Cels ius.
I
0 VU readin g
J.90· ...idex2.70" hi, h I2.1S· deep
(99 mm I 69 mm I 10 mm).
M436
4.W widc I 2.90' hi. h I l.7S·deep.
(114 mm I 74 mm I 10 mm).
(Amplifie r usc mbly only)
4.W ... ideI2.6O"bi,h
(102 mm I 66 mm)
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M436
WARD- BECK SYSTEMS LTD .
M4 U/MH6 VII MITE R
The M4lS /M4}6 VU Meter a nd ampl ifi er
auc mbl )' co mplies .. i,h ANSI It an dard
-<: 16.$ .. it h reseect ie meie r hall ilt ics and
sc:alee ha ra ete r iSl ics.
T he iOle, ..1 ampl iCier drivCl Ihe meter
.. ilhth e corrc:el soureeimpedu ee a nd ma y
bri d. e ac rou lilna l sources II low II 0
d BII ISO ohms; f or a 0 VU rndi n... T he
amplif ie r isoJate s the meter fr om l hc:a ud io
sollrec bc in. mcII lIred. lhcrcby el imi lla l ina
a ny possible loadinac:ffeet or t he: intr od llct ion of d i, tOnion prodll cil by lhe
mOvement a nd in rectifiers.
Int elra l loop thr ollih eo nncc lio ns ar c
pro vided fo r Ihe meie r la mps alo nl wilh
a Cu rre nl li mi li ol res iSior .
The aucmbl y ma y be operat ed fr om an y
relll lued or llnre 'lIlateddc llIppl y volll i e
from +-24 t o 21 volli.
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Thc ICOl il iv ily coo lrol 00 th e: SA I4·J21
Am pl ifier Alsc mblycovc rla o iOpll l li,n ll
U OI C rro m 0 dBII 1$0 ohm l ro +-14 d BlI
6000 llms in 4 d BIICP' .
W A RD- B ECK SY ST EMS lTD.
C1 R CtllT DE S CR I PT I O N
M4l5m06 V II M U EB
S AI + JlJ ,4,M P I I f! EB 6$ S U IB I Y
PR"" r SuRply Qup.pll'l
The si gnal app lied to the ac t ively bal an ced i np ut at PI pin 7and Sis couI)Icd
th rough C I a nd C2 to a va r iab le Ion
netw or k. T he loss net wor k eon list s of R 3.
R4, RSa ndt he pr eeision l hu ntrn ist or lR 6
through R I2. Scllsitiv it y swit ch SWI d eter .
min n th e nerwor ks lou.
The un re glliat ed or regul at ed pOl it ; ve
sllPply volta i C <:o nnects 10 PI pin 9. CR I
guar d s again st possibl e l upply vollage
rever sal.lC regul at or U2 , ets th e regulat ed
supply volta ge 10 22 volts. Th e regulat or
oll t Put vollalle is se t by RD . R24 an d RlS .
T he one hs lf IlIpply bias volta ge is Set by
driver R26 IIld RH . It is deccupted by
<:a pacilo, C9.
U IA wilh feedhaek lai ll sell ill& rcsiSlOIS
R ll, RI6111d R I1 forms Ihe pr eamp lificr
seeue e. Rl 7 is a <:a li bl uion !ri m co ntrol
wil h I Pproli mllclr 4 d B of ..flle.. This
a llo ws f or fifl enhbra tion adj uslm enl s lo
be mad e belwecllthe sellin&! of the sen·
si l iv it y sw itc h SWI.
T heolle hl fl uppl y biuvol t age is applied
to U IA l hrOll, h bias rcsi no r RIS .
U lD fo r mlthe met er dri ve amplifier. Irs
ga ill il set by th e ra t io of RlS a nd R20.
T heone half suppl y voltage bias is appl icd
to pin s e r VI B.
Th e po wer supply eo mmon eo nne<:11 to PI
pi n 9.
A d ropp ing ru ilt or R2I is incl llded 011the
5A 14.121 asse mb ly ro limit II1CteT lamp
<:UfTelll. An add itio lla l loop Ihroul " connec tOI P2 has beell pr ovid ed fll r the limp
po wer . Th is is inco rporated to mi ke thc
YU met cr asse mbly modul ar (n o et eeer
wi ri nl ), ....i th improved serv iceabi l ity . Th e
YU mctcr ls mps plu , in to P2 pi ns I I lld 2
whilc t he met cr pc wer eo nnece to P I pillS
2 u d l O.
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T he VU meter ee e aeeta di re<:tly 10 the
amplif ier <:ard Ofl a sel of spe<:if ic:ally
dcsilllediermilllis. T he meter OUl pu t drive
al so a ppeul u P I pilll la nd 4. T b is is for
t hc a pplica ti oll where the me te r is re mOte
from Ihe SA I4·121 Amp lifie r Asse mbl y.
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sc ueee ;mpcdan<:e ma tc hi ng rcsi sto r R 22.
Thi s 1900 ohm resist or matc hes t he in te r nal
impeda nce of Ihe mete , . Thi s im pedance
ma t<:h is i mpera t ivc to in sure prope r VU
mCtCr ba lll sti <:$.
W ARD - BECK SYS T EMS l TO .
S H .U P P R OC E DUR E
M435{M43/i VI!
The M435/M 436 VU melen are fac loryca lib ra lcd a nd no rmallydonolreQ uirereca libraticn. The se nsitivi l y <tn p $WI ace ornmoca res inp ut leveb of 0, +4. +8 and
+14 d Bu for either 600 or 150 ohm impeda nces wilhi n +/ -0.25 dB of th e selected val ue. If it becomes necessary to rece ttcra tes The VU meTer proceed as follow s:
3
mTER
Trim B I7 for a ' 0' reading on Ihe VU
meter.
4. Ty pic ally The sup ply cur rent for the
SA14- 12 1 met er amplif ier assembly is
IS rnA. Th is is wilh out meIer ill umi_
nation.
I. StrapS WI fnr lhea ppro priue lcvc land
im ped anc e of operation. Ref er 10 drawingBI 4-121-06-00Ifo rsen.i t iv ilYSTrap
de tail.
Ap ply a I kHz test si gna l at Ille appropriaTe level a nd impeda nce . as per
lhe sens itivit ystrapseningon SWI
Equiv a jent voltages
seu ings ar e:
for
sensi l ivil Y
Imped ance
I SO Ohms 600 oh ms
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1.944
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0.387
+4dB u 0.613
+8dB li 0.972
+ 14dBu 1.944
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W A RD- B ECK SYS T EMS l T O.
M1WM116 VI! MO ER
PART
MEe
DE S CRIPTION
M ID PART S !J M B fR
VU Amp li fic .
MeIC. MovC lDC ll l
fo rM1H(1")
fo rM1 36(1.s)
Broch-
Simpso n
5614-111
VB
MET ER AMP I !fl U
S13WL
S41WL
ASSEM BLY
10 uFI2.S V
10 uF/2 S V
22 pF
10 uF / 2S V
470pF
K ~mCI
T3~ I06 M02SAS
C'
C'
Phili ps
Kcmel
Philips
2222-631- 10229
T3 9OCI06M02SAS
2222-630-03 17 1
C6
C7
C'
C,
10
22
10
22
Kcrnel
SierncM
Kerner
Siemefl!
T3 9OC106 M02SAS
22/ 2S8S 2OO
T39OC106M02SAS
22/2 S851OO
"P2
10 Pin Con nector, Ber, st ic k
2 Pill Co nnccl or
...,
Rcsi!I Or
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~ /1W
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" K
"K
"K
270 K
IN1003
Be; ,
6S624-2 10
6S61S· 202
Ph.ilips
<;RlS
1110
6 K19
3KS7
IK SI
) KS7
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, K09
2110
" K
" K
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" K
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M:fJ:li/M U 6 VII MUEB
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R22
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MFfj PAR T N!! MRER
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cODt inued op t im um equ ipment per f'ormance.
3-'
W ARD - BECK SY ST EMS lTD.
PI CONNECTOR LAYOUT
M435/M436 VU METER
VU METER SUPPLY VOLTAGE
I
Il!l Il!l
2
LAMP SUPPLY VOLTAGE
EXTERNAL METER DRIVE
3
Il!l Il!l
4
EXTERNAL METER DRIVE
SHIELD
5
Il!l Il!l
6
I NPUT
7
Il!l Il!l
6
VI)
9
Il!l Il!l
10
LAMP COIlMON
VI)
VI)
METER COMMON
COIl MON
TYPICAL MATING CONNECTOR
INPUT
n
CIID!P TYPE
658 46-010
(Mini-Lat ch Housing)
BERG
PV-47712
(Mini-PV Terminals)
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WARD- BECK SYSTEMS lTD.
P2 CONNECTOR LAYOUT
"'435/14436 VU WETER
l ~
LAMP VOLTAGE
TYPICAL MATING CONNECTOR J2
CRDlP TYPE
(Mini-Latch Housing)
B'RG
(Nini-PV Te rminals)
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BERG
6-2
CJ
CAL
22 P
R1S
4JK
Cl
P'
7
CS
C2
R4
10/25
15K
RS
R7
1~
6K49 1%
R8
R9
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+14
+8
0
+-4
600 ohm.
1I(~ 1 "
3~W
STRAP AS RECUIRED
Rl0
3K57 1';
L
:,:J
+14
+8
0
+4 0
150 ohm.
NOTES:
1.
ALL RESISTORS , / 4W 5l: AND
ALL CAPACITORS ARE IN uFo
UNLESS OTHERWISE SPECIFIED.
2.
lAST COMPONENT DESIGNATIONS:
C9 . CR', P2. R28, SWl ole U2.
., 2
24K3 1%
CRl
+22V
240
R24
J K9
C8
10/ 25
+l'V
. 27
24K
C9
22/25
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a
R2J
4701(
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R25
C7
22/25
R26
22K
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lN400J
P'
9
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SENSITMTY
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9K09 ,,;
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,
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JK57 1';
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R21
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14K3
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R22
3K9
10/ 25
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R2
47K
P2
SUPP LY
COMMON
RIS
10/ 25
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P2
SUPPLY
VOLTAGE
+ 2 4V TO
+ 3 5V DC
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or -25V
COMMON
15K
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SHIELD
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lAM PS
10/25
270K
P'
8
lAM P
DROPPING
RESISTOR
C4
Rl
47K
VU
INPUT
02 0
R17
50K
+22V
RJ
RlO
R' 8
METER DRIVE
C5
R18
10/25
RIg
200
C5
...70p
R22
JKg
P'
3
R21
'5K
P
EXTERNAL METER
DRIVE
+11V
P1
4
iOO ohm.
SW,
SENSITMlY
STRAP
) ohm.
NOTES:
ALL RESISTORS , / 4W 5~ AND
ALL CAPACITORS ARE IN uFo
UNLESS OTHERWISE SPECIFIED.
2.
LAST COMPONENT DESIGNATIONS:
CR1, P2 . R28 . SW, & U2 .
cs,
+22V
+"V
WARD-BECK SYSTEMS
//W
SA14-121
BS
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