M523 — Stereo Submaster Module

M523 STEREO SUBMASTER MODULE M523 SUBMASTER MODULE MASTER Ass GN-STEREO Inputs Switcn SW2 assigns the submaster modules stereo output to the master mix bus The left and right channel mix bus inputs appearing at P1 pins 37 and 38 and P1 pins 39 and 40 are fed to the 5A14-086 Summ ing Amplifier Subassemb ly . BALANCE R1 through R4 set the level balance between the left and right stereo outputs which feed the master bus assignment selectors Sw1 inserts this con trol into the signa path _ The actively ba anced outputs from the summing amplifiers appear at P1 pins 45 and 46 and P1 pins 47 and 48 _ These ou tputs connect to the insertion jackfield and to the inline balanced stereo mixing attenuator 10) MASTER ASSIGN-MONO Outeut_Amplifiers Switch SWS assigns the submaster modu les mono output [0 the master mono mix bus The SA14-087 Output Amplifier Subassemb ly contains three amplifiers The left and right channel booster output amplifiers, which receive the inhand set ting of the inline mixing attenuator and raise the signal level to the nomina +8 dBm output level 11 ) MASTER ASS IGN-MONO Switch Sw4 assigns the submaster modules mono output to the master mono mi= bus mono output amplifier is on this assemb ly as wel| _ This ampli - fier' s input TS der ved ircm the outputs of both the left and right channel cutput amplifiers 12) AUXILIARY-MONO Auxiliary level controls R102 and R103 set the Tevel of the audio signals fed to the mono auxiliary miz xing buses and AII three amplifiers have actively balanced low impedance outputs cable of delivering +30 dBm (1 watt) into 600 ohms 13) AUXILIARY-STEREO Qutputs R98/R99 and R1OO/R101 are the level controls for the stereo auxiliary mixing buses and Three direct outputs are made available from the M523 Submaster Mod- ule; left, right and mono direct program output and moni- toring output are prov ided for each.

sma| | amount of isolation is prov ded between these ou tputs to protect the different circuit feeds. 14) SUBMASTER ON SW14 is the momentary pushbutton switch which operates the electronic latching circuit for the submaster solid state channel switch. The left and right channel switches are Iocated on the SA14-086 Summing Amplifier Subassembly _ The left and right stereo outputs are fed to the master stereo assign - ment selector SW2 and SW3 Balance control RI/R4 may be inserted into the stereo output via selector switch SW1 The mono master mix buses are assigned the monophonic ou tput by SW3 and SW4 Al master mix bus assignment selections have assign select contacts which feed tally information to the SA14-077 Control Subassembly Postfade auxiliary feeds are derived from the outputs of the SA14-087 Output Amplifier Subassemb ly as wel 3-2 4-1

GENERAL M523 SUBMASTER MODULE M523 STEREO SUBMASTER MODULE Ambient Temperature: to 60 degrees Celsius_ The submastering functions ior the St series of Stereo Television consoles are found in the M523 Stereo Submaster Module. Dimensions: 1.60" ide 14.15" high 6.50" deep (41 mm 360 mm 165 mm The mixing bus amplifiers are an integral part of this module The outputs from these amplifiers feed the actively balanced insert points, where the insert jackfield and the stereo inline slide mixing attenuator are connected Weight Ibs (1.8 kg) .

1 Anser erefadekftekeofincoine mixiov ideenuatorich Thonneess beeweere erefade auxiliary functions of the modu le as wel| as the mix bus level sensors The module output amplifiers make up for the insertion loss of the inline slide ixing attenuator and are capable of delivering an ou tput level of +30 dBm (1 wait ) into 600 ohm load_ The nomina ou tput level is typically set to +8 dBm .

Direct ou tputs are prov ided for externa program feeds and mon itoring. The outputs from the M523 ia2 3C2 assignment selecio-s in stereo for master and master These selector outpuis are through the module' s Balance control The stereo solo takeoff point is after the Balance control as well thus reflecting stereo spectral position in the selected solo function separately derived Mono ou Itput is available, both directly at the module connector and via the master mono and master mono bus selectors_ The ST seri es of consoles have master and master outputs derived separately irom the submaster in both stereo and mono Four Auxiliary outputs are available, each ith separate pre/post fade selector assignment selector and level adjust control Auxiliaries and feed the stereo auxiliary mix buses and and feed the mono auxiliary mix buses _ The Channel On and Solo functions of the M523 Submaster Module are made via solid state FET switches This provides for very reliable and silent Swi tching.

The control of these solid state switches may be done directly through the pushbuttons on the modu le or remotely through the centra microprocessor based control system 1-2 2-1

CIRcUiT DESCRIPT ION SA14-086 SUMMING AMPL IFIER ASSEMBL Y SA14-086 SUMMING AMPL FER ASSEMBL Y PART DESCR IPT ION MFG MFG PART NUMBER R45 , R46 C44 and C45 further decouple the supply voltages to the summing preamplifiers U1, u2, U5 and u6 _ C1 C2 Cz C5 Capacitor 220 uF/10 220 uF/10 22 F 68 pF Kemet T390-F227-01OAS The M523 +/-23 volt supply inputs appear at P2 pins subassemb ly connector.

and of the Philips 2222-638-58229 2222-638-52689 C6 22 pF 2222-638-58229 82 pF 2222-638-58829 C8 82 pF C9 4.7 uF/10 Kemet T390B475M01OAS C10 10 pF Philips 2222-638-10109 C11 33 uF/10 Kemet T3900336M01OAS C12 100 pF Philips 2222-638-58101 C13 22 pF 2222-628-52229 C14 100 pF 2222-638-58101 C15 22 pF 2222-638-58229 C16 C17 C18 C19 C20 220 uF/10 220 uF/10 220 uF/10 220 uF/10 22 pF Kemet T390-F227-010AS Philips 2222-638-58229 C21 C22 C23 C24 C25 22 pF 68 pF 22 pF 82 pF 82 pF 2222-638-52689 2222-638-58229 2222-638-58829 C26 C27 c29 C30 uF/10 0 .

uF/100 33 BF/10 10C pF Kemet Sprague Remeps Philips T390B475MO1OAS 1C1OXZRTO4MOSOB 23900636M01045 2222-638-58101 1 C31 22 pF C32 100 pF C33 22 pF C34 220 uF/10 C35 220 uF /10 2222-638-10229 2222-638-58101 2222-638-58229 T390F227M010AS Kemet 2-1 1-2

PARTS LiST M523 STEREO SUBMASTER MODULE M523 STEREO SUBMASTER MODULE PART DESCR IPT ION MFG MFG PART NUMBER PART DESCRIPT ION MFG MFG PART NUMBER C39 C4o C41 C42 C43 Capacitor 47 uF/40 47 uF/40 22 uF/25 V 22 uF/25 10 uF/25 Philips 426ETG47 R1 R2 R3 R4 RS Philips 426ETF22 Potentiometer 5k Clarostat WBS 10-047 Kemet T390C106MO25AS Resistor 1/4W 5% 1K8 Phi Tips C44 C45 C46 C47 C48 10 uF/25 10 uF/25 10 uF/25 uF/100 uF/100 R6 R7 R8 R9 R1O 1K8 1K8 1K8 10 10 Sprague 1C1OXZRIO4MOSOB C49 C5o C51 C52 uF/100 uF/10OV uF/100 uF/100 R11 R12 R13 R14 R15 10 10 10 10 10 CRI CR2 CR3 CR4 CRS Faicc-" d N571j R16 R17 R18 R19 R20 10 36k 36k 36k 36k IN4148 CR6 CR7 CR8 CR9 CR1O R21 R22 R23 R24 R25 36K 36k 36k 36k 10 CRI1 CR12 CR13 CRI4 CR1S IN4003 R26 R27 R28 R29 R30 10 10 10 36k 36k R31 R32 R33 R34 R35 36k 36k 100k 470k 18K DSI DS2 DS3 DS4 LED Red/Green Amber LED Red/ Green Amber Lamp 12V LED Red Litronix LDiOO-ss Spectro H.P 394 HLMP1301 5-2 5-3 0c

PARTS LiST M523 STEREO SUBMASTER MODULE M523 STEREO SUBMASTER MODULE PART DESCR IPT ION MFG MFG PART NUMBER PART DESCR IPTION MFG MFG PART NUMBER R36 R37 R38 RzO Resistor 1/4w 59 18K 10K 10K 22k Philips R77 R78 RG? Resistor 1/4w 5% 7k5 7K5 K Philips R41 22k R42 22k R82 R43 7K5 R83 R44 10K R84 R45 10K R85 R86 R46 7K5 R47 10k R87 R48 10K R88 R49 47kK R89 R5o 47k R9o R91 R51 47k R52 47K R92 R53 15K R93 R54 15k R94 R55 15K R95 R96 R56 15k R57 R97 To delete R98 R65 R99 ) R66 Resistor 1/4w 5% 33k Philips R1oo R101 R67 33k R68 33K R1o2 R69 33K R103 R70 33k R104 R71 33K R105 R106 R72 47k R73 47K R1o7 R74 7K5 R108 R75 7K5 R109 R76 7k5 R11O R11 7K5 7K5 7K5 7K5 2K4 2K4 2K4 2K4 2K4 2K4 2K4 2K4 2K4 2K4 2K4 2K4 Potentiometer 5k Clarostat WBS 10-050 Sk WBS 10-049 5k Resistor 1/4w 5% 15k 15k 15K Philips 15K 15K 15K 15k 15K 5-4 5-5