M452 — Oscillator Module

N452_OSCILLAIOR_MQDULE The M452 is multi-frequency osci]ator designed to be used in conso ]e system a5 reference sourcc for ali gnment and slating functions Oscillator The o5cillator i$ of the Wien bridge type 21 Provides the necessary ga i n The series and shunt capacities are ma de up 0 f C2/c3 and c1/c4 respectively Switches SWI through SV1o are used to select the resistive components RI through R22 thereby providing selection 0 f ten discrete 0sciTlator frequencies Automatic Gain Contro] The output amplitude 0 f 21 i$ contro]led by FET 01 which acts a $ variab]c resistance element and 1$ part 0 f the feedback Toop 0 f 21 Q1 in Lurn i5 controlled from dc vo 1 tage generated by an amp]itude detector cons sting 0 f the two halves 0 f 22 CRT CRZ C6 R29 and R30 The input signa] driving the amplitude detector i$ taken from the output 0 f 21 Qutput_Amplifier The osci]ator signa] 15 routed from the output 0 f 21 via the LEVEL CALIBRATE contro] R37 to the input 0 f 24 The two ha ]ves 0 f the actively ba Tanced output amplifier consist 0 f 24 , 04 , Q5 and 23 , Q2 , 03 respectively . R37 i5 accessib]e through the front pane | with the 4 id 0 f a screwdriver Qutputs Three DIRECT or unswitched outputs are provided namely: +14 dBm into 600 ohm at pins 14/R +8 dBu into 600 ohm a t Pins 13/P -70 dBm into 150 ohm a L pins 12/N . Aside from the DIRECT outputs switch SNII operates two separate SWITCHED outputs namely: 114 dBm into 600 ohm at pins 16/T _ +8 dBm into 6 00 o h at pins 15/5 2 -1

WAAD-BECK SYSTEMS LTD CIRCUIT DE SCRIPIION M452_OSCILLATOR_MOOULE Additionally , Sw1 15 equipped with norma ]ly open contact, brought out at pins 18/v to a 1 Tow for externa 1 contro] functions such a5 sTating relays Power_Supply_Decoupling C15 , C16 , R60 and R6 3 form passive on-board power suppTy decoup]ing circuit CRZ and CR8 Prevent modu]e damage in the event of accidenta] polarity reversa] 2 -2

WAAD-BECK SYSTEMS LT PARIS LISI M452OSCILLATOR MQDULE PART DESCRIPIION MFG MEG PART NUMBER c1 /4 C2/3 C5 C6 C7 Capacitor 0. 025 uF combined WBS WBS 13-009 0.15 uF uF/35 V delete Philips Kemet 344chaISOk T390B106m035A5 c8 c9 C]0 CII C12 33 uF/10 V 15 P F 4.7 pF delete Kemet Philips T3900336m0104S 2222-638-10159 2222-638-09478 C13 C14 C15 C16 C17 220 uF/10 V Kemct T390F227m01045 22 uF/25 Philips 426ETF22 4 .7 pT 2222-638-09478 C18 C19 150 uF / 6 V 68 p F Kemet Philips T390E157m006a5 2222-638-70689 CRI CR2 CR3 CR4 CRS Diode Fa irchild 1N4148 CRG CR7 CR8 Motorola 1n4003 DS 1 LED red Fairchild FLVIIZ Transistor Nationa1 P1087E PN3569 PN3S6s Pn3645 2 8 4 5 RI R2 R3 Res istor Xw 5 % Philips factory sclected 620k 3 -1

WARD-BECK Systems LTD PARLS LIST M452_OSCILLAIOR_MQDULE PART

MFG MFG PART NUMBER SWI To Sw1o Button (White) Schadow FM-Wh Sw11 (Red) FGK-RED WBS recommends the use of replacement parts made by the specified manulaclurers for continued optimum equipmeni performance . 3-4

WB $ M452 LEVEL CalibraTiON contro] R37: Screwdriver adjustment Permits output Jeve | ibration from Tront unita 20k 156 10k FREQUENCT 1ors choose SELECTIDA one svitch ten assemb Iy ShI discrete osc | |ator Swio: 1 Frequencies from t0 20 Khz . 180 INSERT switch ShI: Hhen depressed, routes the {igne Ene EwO switched the modu SutEots ^8d; and luminates che SOC ated iona Iy, non committed norma V-Open contact'is losed, ava lable for extcrna Contro Purposcs ISSUE (DATE REVISION WBS WARD-BECK SYSTEMS DRN Pinoy ENG CKD EL APP SCALE M452 OSCIllATOR MODUlE

MFG MFG PART NUMBER SW1 Button (White} Schadow FM-WH SW1O Sw11 (Red) FGK-RED WBS recommends the use replacement parts made Dy the specified manulaciurers for continued optimum equipmieni performance

M452 OSCILLATOR MODULE Osc i]lator Frequencies 20 _ 30 , 50 100 400 1K, 5 K , 10K , 15k, 20k . (in Hz ) Frequency ToTerance: +10% _ Amp]itude Stability: After 30 minutes warm up : Constant within +0 . 25 dB at a 1 1 frequenc ies and nomina ] Teve]s _ Waveform: Sine wa Ve , Tess than 0 .

25 % THD at a 11 frequencies Output Impedances : Direct: Line Mic: Less than 50 ohm_ 600 ohm. 150 o hm _ Output Leve]s : Direct: Line: Mic: +14 dBm nomina ] +20 dBm maximum_ +8 dBm nomina ] -70 dBm nomina] . Note: Output Tevels are ca]ibrated within 0 . 5 dB _ Load Impedances : Direct: 600 ohm , ba ]anced _ Line: 600 ohm, ba lanced Mic: 150 ohm , ba Tanced .

Phasing : A11 numbered output termina ] s are in phase with each other Power Requirements : +25 volts dc , 25 mA _ Ambient Temperature to 60 degrees Celsius _ 1 . 6 " wide X 7" high X 6 . 5 " deep _ (41 mm X 178 mm X 165 mm ) Dimensions 1 -[

M45Z OSCILLATOR MOD ULE

The M45 2 is a mult i -f r eque ncy oscillator desi gned to be used in a conso le system as a re ference source for a l ig nm ent and sl ating functions. Oscillator The oscillator is of the Wi en bridge t ype . Zl pr ovi des the necessary gain. The series and shunt cap acit i es a re made up of CZ/C 3 and Cl / C4 respec t ively . Swi t ches SW l thr ough SW10 are used to select the resis tive components Rl thr ough R22 thereby provid ing a selection of t en dis crete osc il l a to r frequencies. Automatic Gain Con trol The ou tput amplitude of Zl is controlled by FET Ql wh ich acts as a variable r esistance ele men t and is pa rt of t he f ee dbac k loop of Zl . Ql in turn is cont rolled f rom a de volta ge genera te d by an amplitude de tec tor consistin g of t he two ha lv e s of ZZ, CR1 . CR2 , C6, RZ9 an d RJO. The i nput sig nal dr iv ing the amp li tude de tec tor is t ak en from the out put of Zl. Ou tp ut Amplifier The oscillator si gnal is routed f r om the outp ut of Zl via t he LE VEL CA LIBR AT E control R37 t o the in put of Z4. The t wo halves of t he ac t i ve l y balan ced outpu t ampli fie r consist of Z4 . Q4, Q5 and 23, QZ. QJ r esp ectively . RJ7 is acce s s i bl e through t he front pa ne l wi t h the ai d of a screwd r1 ver . Outputs Three DI RECT or unswitch e d ou t put s ar e pro vide d . name l y: +1 4 dBm into 600 ohm at pins 14/R . +8 d8m into 600 ohm at pins l 3/P. -70 dBm i nto 150 ohm at pins l2/ N. a .c ps

As i de f r om t he DIRE CT outpu ts, swit ch SW11 opera tes t wo BS

separate SWITCHED outpu ts , namely: +14 dBm in to 600 ohm a t pins 16/ T. W

+8 dBm into 600 ohm at pi ns 15/S . :// tp ht

1 -1

WAR D -BE CK SYS T EM S LT D ,

CIR CUI T DESCRI PT IO N K452 OSC I LLATO R MODULE

Addi tionall y , SWl is equipp ed wi t h a nor mal l y ope n con tac t . brought out at pins 18 /V t o al l ow f or e~te r n a l control f unct i ons suc h a s s l a t in g re l ays. Power Suppl y De coupll ng C15 . C1 6. R60 lnd R63 fo r. a pass i ve , on-bo ard powe r s upply decou pli ng c i rcui t. CR7 and eRa preve nt module da. age I n t he e vent o f acci de nt al pol a r i t y re versa l.

a .c ps BS W :// tp ht

2·2

WARD- BECK SYSTEMS L T D

M452_OSCILLAIOR_MODULE The M452 i$ multi-frequency 0sci]lator designed to be used in conso ] e system as reference source for 0 | gnment and sTating functions Oscillator The 0sci]lator i$ of the Wien bridge type 21 provides the necessary ga in The series and s hunt capacities are ma de UP 0 f C2/c3 and €1/C4 respectively Switches SW] through SW1o are used to select the resistive components RI through R22 Enereby providing select on 0 f ten discrete 0sciTator frequencies Automatic Gain Contro] The output amplitude o f 21 i5 contro]ed by FET Q1 which acts variab resistance Tement and 1 5 part 0 [ the feedback 1oop 0 f 21 Q1 in urn 1 5 contro)led from voltage generated by an amp ]itude detector consisting 0 f the two ha ves of Z2 , CRI , CRZ , C6 , R29 and R30 The input 5 Tgna 1 'driving the amp itude detector taken from the output of 21 Output_Amplifier The osci |ator s i gna] 15 routed from the output of 21 via the LEVEL CALIBRATE contro1 R37 to the input 0 f 24 The two ha ] ves 0 f the actively balanced 0utput amplifier consist 0 f 24, 04, Q5 and 23 , Q2 , Q3 respectively R37 i5 accessib ] e through the front Pane with the 4id 0 f screwdriver Qutputs Three DIRECT or unswitched outputs re provided , nameIy : 714 dBm into 600 ohm at pins 14/R +8 dBi into 600 ohm a t Pins 13/P 70 dBm into 150 ohm a [ pins 12/N .

Aside from the DIRECT outputs switch SWT] operates two separate SwITCHED outputs namely 14 dBm into 6 00 ohm at pins 16 /T _ +8 dRm into 600 onM at pins 15/5 2 -1

H45 2 OSCILL AT OR MODULE

PART DESCRI PTI ON MFG "FG PART NUMBER Cap acito 0.025 uF , co mbin ed WBS WBS 13-009 Cl/ 4 C2/3 , r , , , Philips 34 4 CHA 150 1( C5 C6 C7 , , O. 15 "' 1 uF /3 5 V delete Kelll e t TJ90BI06H 0 3 5AS

, , C8 , C9 33 uF /1 0 V x e me t T3 90 0 3 361'101 OAS , Philips 2222-63 B·1 0159 CIO , 15 pF , Cll C.7 pF 222Z· 6 38 · 0 9 C78 , de re te C12 , 220 , uF/10 V I(ellle t T390F, 2 2 7KO1OAS C13 , , C14 , C15 2 2 ,uF /25 V Philips 4 2 6ETF2 2 , , , C16 , , C17 4.7 pr 2Z2Z-638· 09.78 , lS0 uF /6 V Ke . et T3 90 E1 5 7MOO6AS t18 , ci s 68 pF Philips 22 22·638 -70689

CRl Diode, Fairch , ild lN4148 , CR2 , , , CR3 , , , OR< , , , COS , , , CR6 , CR7 Hotorol , a lNC, OO3 , eR' 051 LED. ", Fairchild FLVl1 7

, 01 t r ans, t s t c r Na ,tional P I OS H Q' , PN3S69 , PN36 45 Q3 , a

Q' " , PN3S6 9 ,5 .c

" PN 36 4 5 ps BS

Philips fac t ory selec ted Rl Res1s to r " '" " , , W

" R3 620 1( " :// tp ht

3-'

WARO -SECK SYSTEMS LTD

M4Sl OS CILLATOR MOOULE

. PART

OS DESCR I PTIOH Res is t or " " .- " 6201:: 2201:: 220 1:: «re Philips " KfG PART HU MBER

"R8R7 " " ." " " '" 18K "

" RI O " " " 18K 6<. " " " '" '" at a " " 6K8 IK2 " " " " '" RI5 Rl 6 " " '" 680 680 " " " '" RI, " 430 4JO " " RI, " 330 " "0 " 33 0 " "I eaa " " 330 1( 3 301(

M452 OSCILLATOR MODULE PART DESCRIPTIon MFG MFG PART NUMBER R76 R77 Resistor XW 5 % 4K3 91 Philips Sw] to SWI0 SW11 Switch Assy Switch Schadow WBS 11-050 WBS 11-002 Integrated Circuit Nationa 1 LM3OIAN LMI458N LM3oTAN # WBS recommends the use 0 f replacement parts ma de by the specified manufacturers for continued optimum equipment performance 3-4