M495 — Stereo Monitor Module

MFG MFG PART NUMBER

":-'" ' R25) Knob (Black) Elma 021-352 R26) Cap (Grey) 040-301

SWI To Barndoor (Black/Yellow) Schadow FA101-BLK/YEL SW5

SW6 Button (White) FG-WH

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WBS recommends the use of rep lacement parts made by the ps

specified manufacturers for continued optimum equ ipment performance . BS ://W tp ht

3-4

WARD-BECK SYSTEMS LTD .

DESCR IPTION 5- 101 AMPLIFIER SERIES

The 5-101 series of amplifiers a re utilized as plug-in units within certain Ward-Beck Systems 450 and 460 series modules. There are two separa te ampl i fiers per c a rd each providing an actively balanced output wit h a maximum capability of +25 dBm . The following specifications apply to the 5-101 amplif iers . UNIT INPUT GAI N- MAX. OUTPUT 5-101 Balanced 15 dB +25 dBm 5-101A Unba1anced(summing) Unity +25 dBm 5-101B Unbalanced 20 dB +25 dBm Frequency Response: ±0.25 dB from 30 Hz to 20 kHz. Noise : -100 dBm from 20 Hz to 20 kHz. Harmonic Distortion: Less than 0 .35 % THO from 20 Hz to 20 kH z at +24 dBm output . Output Impedance: Less t ha n 100 ohms. Load Impedance: 600 ohms min imum. Power Requirements: ±24 volts de, 20 mA quiescent curren t, 80 mA at +25 dBm output into 600 ohm load. Ambient Temperature: o to- 6o.-~d-e_grees:-'Ce1-s -i us~.: ­ -- - ----- - - - -----1- - - -- Dimensions : 3.375" X 4.125" X 0.57". (86 mm X 105 mm X 15 mm) . a .c ps BS //W : tp

5-101 -1 -1 ht

WARO-BECK SYSTEMS LTO

5-101 AMPLIFIER SERIES

The operation of both amplifier sections is identical. Only one section will be described. Each section consists of two 'i ndi vi dua 1 inverting' amplifiers, namely Zl and Z2. These are followed by their respective out- put stages Q1 through Q4. In the 5-101, the two amplifier inputs are interconnected to provide a cross coupled differential pair resulting in a balanced 6,000 ohm input. The output is actively balanced . The 5-101A is designed with the Z2 section to be used as a summing (mixing) input. The output of this section at termina l E4 is externally connected to E1, thus providing an unbalanced input and an actively balanced output. The 5-1018 presents an unbalanced bridging input (15k ohms) to the source. As is the case with the 5-101A, the output at terminal E4 is externally connected to E1 and is actively balanced. R47 to R50 together with C15 and C16 provide on-card power supply decoup1ing.

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5-101-1-2 ht

5- 101- 1- 2

WARD-BECK SYSTEMS LTD

5-101 AMPLIFIER_SERIES The 5-101 series o f amplifiers are utilized as plug-in units within certain Ward-Beck Systems 450 and 460 series modules There are two separate amplifiers per card each provi an d+23 actively balanced output with maximum capability of dBm . 90 6 The following specifications apply to the 5-101 amp]ifiers. UNII JJ9 InPUI 97 6 2 f UG n GAIN MAX_ QUIPUI 9ri J 6 6 q T6 } J 09 69 sb fvov 5-101 9306 Ba Tanced 2 ( TLqjuo 15 dB UGn +25 dBm b 920 6 " 6 5-101A Unba lanced ( summing ) Unity +25 dBm 5-101B Unba lanced 20 dB +25 dBm Afof-2 97 V 0 $ U 0 JVq fm / @M f Mmu Frequency Response: +0.25 dB from 30 Hz to 20 khz_ 6 f79jx9 2 i nb bn 6 Juqn Noise: 100 dBm from 20 Hz to 20 kHz 2md0 A8| ) 1Uqn 7 0 8 { 0 [ - 2 Harmonic Distortion: Less than 0.358 THD from 20 Hz to 20 kHz at +24 dBm output_ 69306 ( 5 Output Impedance Less than 100 ohms AjtN 79/J600f 029 0 } Load Impedance: 600 ohms minimum_ enf ( quoj9b kfgqu Power Requirements: +24 volts dc , 20 MA quiescent current 80 MA at +25 dBm output into 600 ohm Toad Ambient Temperature: to 60 degrees Celsius . Dimensions 3 . 375 " 4.125" (86 105 15 S7m) . Mm Mm 5-101-1-1 '-TJ{:

WAAD-BECK SYSTEMS LTD; OTJ amateye 7938; OAaW DESCRIPIION 5-101 AMPLIFIER_SERIES The operation 0 f both amplifier sections identical _ Only j one section will be described 979 Each section consists 0 f two individua inverting amp]ifiers namely 21 and 22 These are fo]lowed by their respective out put stages Q1 through Q4 0 ] k/49 6 2n0 / J 63f 7 {J9q2 @afwo f [ 0} In the 5-101 , the two amplifier inputs are interconnected to u provide cross coupled differential pair resulting in ba lanced 6 ,000 o hm input . The output is actively ba lanced . 0 [ - The 5-1014 is des igned with the 22 section to be used a$ umming (mixing input The output 0 f this section at termina E4 externa]Ty connected to ET , thus providing an unba anced input and an actively balanced output The 5-101B presents an unba lanced bridging input (T5k ohms ) to the source As is the case with the 5-101A the at %t8ve1; nomt termina] E4 is externa]ly connected to E] and i5 ba lanced Juqju R47 to R5O together with C15 and c16 provide on-card power supply decouping . uM $ nr M 2mfl 0 00J 930 6 bgqu [ b 6 0 109ttu) 09329 f Vp 0s Jb 2$ ( 0v $ S @io 003 . fuqjuo m&b 2 $ J5 At 0d . 2709m197 / ups9 79#0 - 2991.29d 0j #T0$ 6799m9T Jn9i dm MTz ( mm 3 [ "25' MM 20 [ "Z1e . € mM 38 ) 2110 | 209m1 5-1C1-1-2 5-101-1-2

WARD-BECK SYSTEMS LTD OtJ emateyz 4o3a-OAAW PARIS_LISI 5-101 DUAL BOOSTER_AMPLIFIER PART

5-101 AMPLIFIER SERIES The 5-101 series 0 f amp]ifiers are utilized a$ p]ug-in units within certa in Ward-Beck Systems 450 and 460 series modules. An 0ot,39e 9me There are two separate amp] ifiers per card each providing an actively ba lanced output with a maximum capability 0 f +25 dBm .98 9029 %o DamotTot 0ns 019m6 The following specifications apply to the 5 -101 amp] ifiers.

* 2 Jve UNIT 6.809 InPUI 975 <fugni 49 GAIN MAX OUTPUI 9r$ 91 7/6q (6+jn97 h9 [ Q sb fvoy 5-101 9908 Ba Ianced 3 6 2 f JUqjuo 15 dB "qn} +25 dBm 69306[ &= 5-101A Unba lanced ( summing ) Unity +25 dBm 5-101B Unba Ianced 9n20 dB b9n +25 dBm Afof- 34 #0 Tds 70 Juqjuo 9( jngn entxtm) eatmmu Frequency Response: +0.25 dB from 30 Hz to 20 kHz .

6m791x9 2 i JvqJuo 09jn6) 60 Zi9v7j36 06 bn 6 JWqm Noise: -100 dBm from 20 Hz to 20 kHz _ (2mdo *21) Iuqo} entebnid 09jns! 6dOu 72 092979 afof-? 9d- Harmonic Distortion: Less than 0 . 35% THD from 20 Hz to 20 kHz 279v4?6 at +24 dBm output _ Li6n9j*? 2r 6n[m79- 69jns ( 6 Output Impedance: Less than 100 ohms _ 010 907Y079 0.

00s 819 dJ}w J9nj900f 029 0} Ia Load Impedance: 600 ohms minimum. en} [ quoj9b rqqu Power Requirements: +24 volts dc, 20 MA quiescent current , 80 mA at +25 dBm output into 600 ohm Ioad . Ambient Temperature: 0 to 60 -degrees Cels ius . Dimensions : 3 . 375 " X 4.125" X 0 . 57" (86 mM X 105 mm X 15 mm) .

5-101-1-1 2 ~JJC

M495_STEREO_MONITOR_MODULE Ga in: dB, +0 .5 dB maximum_ +0.25 dB , from 30 Hz to20 kHz _ 80 dB below nomina ] output of dBm . (20 Hz to 20 kHz) Frequency Response: Noise: Harmonic Distortion: Less than 0.258 Thd from 30 Hz to 20 kHz at +18 dBm output or less Less than 0 . 1% at mid-band at +18 dBm output_ Sources Impedances 600 ohms or Tess ba lanced/unbalanced . Input Impedances Monitor: 30 ,000 ohms; ba Tanced _ Ta Ikback: 30,000 ohms, balanced _ +8 dBm nomina] , +24 dBm maximum Input Levels: Output Impedances : 600 ohms; ba lanced Load Impedances 600 ohms, ba lanced Output Levels: Channel Separation: dBm nominal , +20 dBm maximum Better than 50 dB , from 30 Hz to 20 kHz , better than 70 dB at kHz _ Phasing: Input and output terminals designated by numbers are in Phase Power Requirements +25 volts dc, 45 MA nomina] , 60 MA ma x mum Ambient Temperature: to 60 degrees Celsius _ {4i wide 7" high Gmf" deep . Mm X 178 Mm X 165 Dimensions

WAAD-BECK SYSTEMS LTD_ OTJ am3tay8 XO3e-QAAW CIRCUII_DESCRIPIION 403 M495 STEREO MONIIOR_MODULE The M495 a ]ows the selection 0 f five stereo signa] sources Swo 9 from_ within conso le system Provision is ma de for simu taneous Teve] adjustment and muting 0 f both channe] s as TIJ may be required The module outputs are designed for driving 6 00 an externa monitor ampifier as we] a5 600 ohm headset |UDom feed 290 6J | 0v %iyque 2nf Monitor_Inputs Source selection made with an interlocked two-channel , five- station push-button as sembly eparate input is provided for talkback facilities and appears on the Teft channe only Preamplifiers 21, 22 and their associated components form the balanced, high input impedance preamp]ifier used for the LEFT channe| The output 0f 22 is coupled through C13 one ha] f 0f the Teve] contro] (R25) _ From the Teve contro] the gna ] is coupled through C15 and R27 to pin E2 0 f the 5-101B booster amp]ifier _ The RiGht channe| signa 1 is processed i n an identica] manner via 23 24 C14 and the second ha ] f 0 f the Tevel control (R26) _ From R26 the gna 1 i5 routed through C16 and R29 to pin E6 0 f the 5-101B amplifier ba Tance trim contro] R28 is inserted between C16 and R2g Qutputs 5-101B dua 1 booster a mplifier employed in the-output stage Two ou - tput feeds are provided for each 0 f the two stereo channe one 0 f which is brought out directly from the 5-1018 amplifier whereas the second feed is routed through the contacts 0 f muting re Tay _ Muting The relay K1 may be operated either by the mute push- outs8 button or externa | y by ground closure at pin X 0 f the module connector The LED DS1" is iuminated when the muting function is activated 2 -

WARD-BECK SYSTEMS LTD_ OTJ em3teye Ao30-OAAW CIRCUII_DESCRIPTION M495 STEREOMONITOR MODULE QaK Power_Supply_Decoupling 93 2 9v ! | 7 0 0oifoa[92 907 ew0 [ [ 6 €eam 9m [ noiz (V07 Q Fo: 212 9 [ 02003 nfnjfw M0" I C17 through C20 together with R42 and R43 form passive on - VM f 2 board power supply decoupling circuit CR1 and CR2 prevent % 8 M modu]e damage in the event accidenta polarity reversa [ 0 f the supply voItages b997 0n TohoM 9v [ } [90n643 ow] DsA3o(tsjmt n 6 dJiw sb 6m no[Jj9( 9 2 937002 0m92 2 & nojjud -n24G n0T $63 2 2769495 Dnb 29m $ r |T3 6} 436dxj 6J 70 T Dabfvovq JuGnf 9 ] 676q9 2 V!o (9an 642 JJ9 9d3 0o 219f1[[ 9m6829 dg f r bs)n6 / 6 d 9fJ MTF 0} 2j09nogmo) b9J 6 /30 2 2 5 t(sdj bn 5 SI 'In 9 0 | 1907609 T73] 913 701 09 2U 79 f ? F [9mcs7q 930 6 0 9 Qm JLqo[ K9v 9 ( S0} Tef 9n0 05 € [ ) d@uo dj bsf qu0 3 2 [ SI :0 JUGJuo b 9 [ (o3 (6ad 90j [07fnoj 9v9 | 9(J Mo " 259 ) [otjno? 19 F}}(qmb 9f200d 15 0 [ 9r3 T 0 53 n i q [sa bn 6 c[j 0@uo7rj t9nnbm [63ffned 0 € n f n 2 F 5 n p 9n06d3 ThD [ 9 9dT (a$9 } 075no ? 9V $ Qt 15 0 0noje2 9n] Dn & -[ ) 2 1 5 T V T0. 3] tq ef9 b n1 € 3[ ) neu 07dj 09] V0 : 2 [ [6 f2 9n3 259 mo7 7 6 9j792n + 853 T0tjnc3 0i 7 $ 9306 ( 6d 79 Tqms 8[0[ - 3 9n$ 2$9 bn 6 2[) neswj9d 2109*40 Juqjuo 94j 0{ Deo( qm9 2 i 79;7 | (M6 79] 2o0d 16ub 8[ 0[ -< 90 6$ 09791 2 Ok $ Rj 7 0 0J69 70 ? babfv07c 9^ E 20997 JUC] Vo O1 , 8 [ 0I -2 9df 307 t [3j9tfb Juo rpuond d3 | rw 9n 0 0n60) 96J dpuotnj 69J1o7 2 f bs9t 000392 ] E973ow ~9 ( } 7 qm 5 {6 / 97 ertjum 70 21263n03 paliul nzuq Bjum 90$ Lc 19dfi9 69j679g0 9d L6m [A (6 / 97 2 n } fum 9r T 9n ] t0 n f q J6 9 "U20 | ) bnuo7@ Kd %ftsntstxs 70 aw? nofjud Dn i JUM 9n J 0smw e5 2f [26 03 J 94T 70j390003 ubcm b9jbv/ $36 2 | 10 fJnu) 2-2

WAAD-BECK SYSTEMS LTD_ OTJ ematbye 4o36-OAAW

M495 STEREO MONITOR MODULE

Gain: 2 dB .±0.5 dB maximum. Frequency Response: ±0.25 dB, from 30 Hz to 20 kHz . Noise: 80 dB below nominal output of ~ dBm. (20 Hz to 20 kHz). Harmonic Distortion: Less than 0.25 % THD from 30 Hz to 20 kHz at +18 dBm output or less. Less than 0.1% at mid-band at +18 dBm output. Sources Impedances: 600 ohms~r less, balanced/unb~lanced.

Input Impedances: Monitor: 30,000 ohms, balanced. Talkback: 30 ,000 ohms, balanced . Input Levels: +8 dBm nominal, +24 dBm maximum. Output Impedances: 600 ohms, balanced. Load Impedances: 600 ohms, bal anced. Output Levels: 0 dBm nominal, +20 dBm maximum. Channel Separation: Better than 50 dB, from 30 Hz to 20 kHz , better than 70 dB at 1 kHz . Phas i ng: -----r n-put ---aifd- oilt pirt --t e r mi n-a1s des i gna ted by numbers are in phase. Power Requirements: ±25 volts dc, 45 rnA nominal, 60 rnA maximum. Ambient Temperature: 0 to 60 degrees Celsius. a

Dimensions: 1.6" wide X 7" high X 6.5" deep. .c

(41 mm X 178 mm X 165 mm). ps BS //W : tp ht

1-1

WARO-SECK SYSTEMS LTO

M495 STEREO MONITOR MODULE Ga in: 2 dB , +0 .5 dB ma ximum _ Frequency Response: +0.25 dB , from 30 Hz to 20 kHz _ Noise: 80 dB be ow nomina 1 output 0 f 0 dBm _ (20 Hz to 20 kHz ) . Harmonic Distortion: Less than 0 . 25 % THD from 30 Hz to 20 kHz a t +18 dBm output or less_ Less than 0 .

1% at mid-band a t +18 dBm output. Sources Impedances : 600 ohms 0r Iess , ba Tanced/ unba lanced . Input Impedances : Monitor: 30 ,000 ohms, ba lanced . Ta Ikback: 30 ,000 ohms, ba Tanced . Input Levels: +8 dBm nomina ] , +24 dBm maximum _ Output Impedances: Load Impedances : Output Levels: 600 ohms, ba ]anced .

600 ohms, ba lanced . 0 dBm nomina , +20 dBm maximum _ Channe] Separation: Better than 50 dB , from 30 Hz to 20 kHz , better than 70 dB at 1 kHz _ Phasing : Input and output termina ]s designated by numbers are in phase _ Power Requirements: +25 volts dc, 45 mA nomina ] 60 MA maximum _ Ambient Temperature: 0 to 60 degrees Celsius Dimensions : 1.6" wide X 7" high X 6 .

5 " deep _ (41 mm X 178 mm X 165 mm) . 1-1

M495 STEREO MONITOR MODULE

The M495 allows the selection of five stereo si9na1 sources from within a console system. Provision is made for simultaneous level adjustment and muting of both channels as may be required. The module outputs are designed for driving an external monitor amplifier as well as a 600 ohm headset feed. Monitor Inputs Source selection is made with an interlocked two-channel, five- station push-button assembly. A separate input i s provided for ta1kback facilities and appears on the left channel only. Preamplifiers ZI, Z2 and their associated components form the balanced, high input impedance preamplifier used for the LEFT channel. The output of Z2 is coupled through C13 to one half of the level control (R25). From the level control, the signal is coupled through C15 and R27 to pin E2 of the 5-101B booster amplifier . The RIGHT channel signal is processed in an identical manner via Z3, Z4, C14 and the second half of the level control (R26) . From R26 , the signal is routed through C16 and R29 to pin E6 of the 5-101B amplif ier. A balance trim control R2B is inserted between C16 and R29. Outputs A 5-101B dual booster amel if-ier--is -emp-loye d-i-n-.t he-·-{) ut put- stage. Two output feeds are provided for each of the two stereo channels, one of which is brought out directly from the 5-101B amplifier, whereas the second feed is routed through the contacts of a muting relay. Muting a

The muting relay Kl may be operated either by the mute push- .c

button SW6 or externally by a ground closure at pin X of the ps

module connector. The LED DSI is illuminated when the muting BS

function is activated . //W : tp ht

2-1

WARD-BECK SYSTEMS LTD

M495 STEREO MONITOR MODULE The M495 a 7 ows the selection 0 f five stereo s igna ] sources YBwo9 from within a console system Provision is ma de for simultaneous Teve1 adjustment and muting 0 f both channels a $ T{J may be required The modu le outputs are designed for driving 8 an externa] monitor amp]ifier a$ we11 a$ a 600 ohm headset n feed .

29053 ( 0v xaqu? eNf Monitor Inputs Source selection is ma de with an interlocked two-channe] five- station push-button assembIy A separate input is provided for talkback facilities and appears on the Teft channe] only_ Preamplifiers Z1, Z2 and their associated components form the ba Ianced , high input impedance preamp] ifier used for the LEFT channe] The output 0 f 22 is coupled through C13 to one ha ] f 0 f the Teve1 contro] (R25 ) From the Teve1 contro] the signa 1 is coupled through C15 and R27 to pin E2 0 f the 5-101B booster amp]ifier.

The RIGHT channe] signa / is processed in an identica] manner via 23_ 24= C14 and the second ha ] f 0 f the Ieve1 contro] (R26 ) From R26 the signa ] is routed through C16 and R29 to pin E6 0 f the 5-ioi8 amp] ifier. A ba Tance trim contro] R28 is inserted between C16 and R29 _ Qutputs A 5-101B dua 1 booster amp]ifier_is-employed_in the output stage Two output feeds are provided for each 0 f the two stereo channe]s = one 0 f which is brought out directly from the 5-101B amp] ifier, whereas the second feed is routed through the contacts 0 f a muting relay .

Muting The muting relay K1 may be operated either by the mute push- button Sw6 or externa ]y by a ground closure at pin X 0 f the modu le connector The LED DS 1 is iluminated when the muting function is activated 2 -1

5-101 DUAL BOOSTER AMPLIFIER

PART DESCRIP TION MF G MFG PART NUMBER C1 Capacitor 33 uFIl 0 V Keme t T390D336M01 0AS C2 " C3 2200 pF Aselco C092-MC-222M C4 6.8 p;, Phil ips 2222-638-0 9688 C5 " " C6 220 uF11 0 V Kemet T390F227M010AS C7 " " C8 33 uFIl 0 V T390D336 M010AS C9 " Cl0 2200 pF Aselco C092-MC -222M Cll 6.8 pF Philips 2222-63 8-09688 --: C12 " " C13 220 uF11 0 V Kemet T390F227M010A S C14 " " C15 22 uF/25 V Siemens B41313-A5226 - Z C16 CR 1 Diode ITT IN4148 CR2 " CR3 CR4 CR5 CR6 CR7 CR8 01 Trans isto r Na t i ona l PN 3569 02 " " PN3645 03 PN3569 04 PN3645 05 PN3569 a

06 PN3645 .c

07 PN 3569 ps

08 PN3645 BS ://W tp ht

5-101 -2-1

WARD-BECK SYSTEMS LTD

5-l01B ~U A L BOOSTER AM PLIFIER

PART DE SC RI PTI ON MFG MFG PART NUMBER

Cl Capacitor 33 uF/1 0 V Keme t T390D 336M010AS C2 " " " C3 De l e t e C4 Capacit or 6 . 8 pF Ph~lips 2222-638 -09688 C5 " " C6 220 uF/1 0 V Keme t T390F22 7M 010AS C7 C8 33 uF/1 0 V T390D336M010AS C9 C1 0 De l e t e Cll Capacttor 6.8 pF Phil ips 2222 - 638- 09688 C12 " " " C13 220 uF/1 0 V Kem e t T390F227M0 10AS C14 , " " C15 22 uF/ 25 V Si emens B4l3 l 3-A5226- Z

C16 .- CRl Diode ITT lN4l48 CR2 " " " CR3 ". CR4 CR 5 CR6 CR7 CR8 Ql Trans isto r Na tiona l PN3569 Q2 " " PN36 45 Q3 PN35 69 Q4 PN3645 Q5 PN356 9 a .c

Q6 PN3 645 ps

Q7 PN3569 BS

Q8 . PN36 45 //W : tp

5-101B-2-1 ht

WARD-BECK S YSTEMS LTD .

PARTS LI ST 5-101B OUAL BOOSTER AMPLIFIER

PAR T

M495 STEREO MO NITOR MOOULE

PART DESCRIPTI ON MFG MFG PART NUMBER Ql Tran si st or Fai r c hil d 2N3569 Q2 " " " Q3

Rl Re si st or !;oW 5% 22K Ph ~ l ips R2 " 22K R3 22K R4 22K R5 22K R6 22K R7 47K R8 47K R9 47K RIO 47K Rll 4 7K R12 47K R13 620 R1 4 620 R15 36K R16 36K R17 36K R18 36K R1 9 2 20 ~ - -. - _.- R20 220K R2l 620 R2 2 620 R23 20K R24 20K R25) a

Potent io mete r A/B WBS 10-02 3 .c

R26) ps

R27 Resistor !;oW 5% 3K3- ., Phil i ps BS

,- , Pihe r PT 10V 5K R2a Trim pot ~ ~. //W

R29 Resistor !;oW 5% 2K7 P h~lips R30 10K : tp ht

3-2

WARC-BECK SYSTEMS LTC.

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WARD-BECK SYSTEMS LTD,

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WARD-BECK SYSTEMS LTD.

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WARD-BECK SYSTEMS LTD.

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