Schematics Page 2

FCC ID: DD4UC2B

Schematics

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FCCID_47425

1 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 | | | | l | | | ] | I | | | l | | l | l | | | I | ] l | | H ! ] | | ] I ] l | | l | | pescretion UC HANDHELD TRANSMITTER _—_ AUDIO BOARD PCB#: 34—8579G no"* 90—8763N—11 SHEET NO. 2 OF 2 SHEETS & ORIG. ISSUED I s User Adjustable Gain Stage g RECORD OF CHANGES MADE 1207 AntieLo8 .4 1287 TPA2 Audio Compandor, 2:1 Compression ‘f N2qz 46M801 <— R207 ? rzss carr ; uc2?ar.sch ==> G—Version PCB cse 4.02K 2es Raos 45 1208 n208 ~ @ e 0 12es 0 | |— 3plf Ts y ; Tone Key Oscillator _ _Y200 _ 1237 cast 27pf 635 % N221 3 i : @ T on gs h8 (| R2ig o un1 00— t 7 nomt T a c z26 , I i ECO 81327. 81340 — § —= c R3 30.1K 30.1K rees ‘"~ Goreag 2 3O3 WAS 1880D238C ——~ s b |—— 2s $——| |——§———M———p z 021 100% $2%eakez peorn ! 0@ 0 @ 1235 1236 meaos i Ras? c m* Rm * 27 0 unBD7000. i ..__./\m/\‘o/\x,-——qh-:-‘(——dr—/\.«/\,q.___/\/\/\ 2 m — L226 C ECO §1362 220 io > L. 1o0% 3 [|ADDED ETSI PARTS FOR JA AND JB P200 R39 A‘ofim: L2 3 / TPA1 1201 1202 — j wese cfiz N237 ECo 33477 3. womn ; (F“m raok Y cf\oo\~ ._,_zg n(ge 7 b Pre~—Emphasis Network L200 R200 N202 ,;L o7 162412 Ras 3 on ; Theat, 4.7 pf a REMOVED ETS! PARTS FOR uB +— 220pF 6 ® o 10.0% $—AAm»— ho unerscast Lcass | . RAISED LIMITTER THRESHOLD FOR JA u2008 MC331790 b N228 b 10.0K N227 +5V_A tk_vee —= T 120pF ~|T— COMBINED MC AND MB INTO GROUP B P 188449 can —= —"°C AgnD _ PCB = G, Sch. = UC2AS.SCH TL +9V.A bhs wees ~|I~ | d AGND . Tk_vee AGno "=* KJM 8/5/98 ran aanp % L ons l ce rasy 5 Eco s1464 & s1478 3 ho joour arer 183402 omm > 1 eak? I | Kam 10/20/98 RiG6 $——AMA—4 no L. wiBetsossL L N238 ‘7'0:’,. 0 [as¥] 0 as ‘I i es u202 AGnb = Jeal s 2 2 6 ECO 81555:. Added UB to table 1301 cros l 1.00M 2l 1271 B E KJM — 150pr —= case , P Tmn 0870f 1209 AcHD $ ‘-—-—49 1 1 € 7 ECO 81562: Changed values for R3 C crss R6 & R8 for Group B & E. Limiter r2es can wok" KJM 3 /12 ¢ & )|—— gzgz tr293— —z AGND"~ +5V_A wam 315 * * 0 n27) * r—2 1231 y TA = 4 2s ev Lz Lorre 186V | nono RiG 1219 4 C honp l wonde BP i8 10.0K aBV_A f male _ R2gD CALL_ID ? *~ $ ¥ «— +5V_A [2_ mase 04 C223 VC , N245 tp22 499 rip 3 @ PWRD c2s1 s _L r. l uf 4 y .__~_l_lommmendlffgeem. I 150pF R12 1232 16V 32.768 kHze | 5 L203 18OnH +9V_A ——_— At+ ::0c2:: TPB 6 19233 04 m;ao 7 IP3AG—3 <—nrorr ore 1252 RF_.BOARD & 150pF PwRp —— —— R17 9 « °* avp_out ommR T hineoyy AcND ASND 10.0K °§ %Mm N252 180nH i MMBTSO87L Tth25s —=~ AGND wn815068e 1 i SHEET—1 1P26 RESETA bo l2 ,s5200 wen 20kHz LPF $3 '3 :: e®Pa @———b t tP19 bssairs @ l2 TPA3 mi ayo_out DATA1 OFF . , ? ON sava T . O 75.0K Output Summing Stage ubsas v b 1244 oi _ +9V _AUDIO $ ns 0242 n2a4 1250 _:_sno TPAY azot T2 I hon 499 207002 y weor ' , @« T 9YA ret Battery Meter rr 2,0}" ress trar ome L. "seas7 ° " © Razz T MA 3 27pF —— + & r2sz m * 24.9% Acnp +9V _=_ 2 T83a01 +5V_A | 1247 T _ Tro 3 3 10.0K MMBTSO87L cAlLJD R2se R240 = @ e 1255 a a a i a A A N255 ———}}-——-——422:2318 b nnec: P RFoFF «ggk N247 4gox Ras? nas? ‘3357 N254 in 6 100 OHMs T2IK N228 0 1254 4 D204 a203 ——— ——, uzoss NDS3SSNCT — AGND —— daas thorieg Terbow 5 Volt Regulator gz”s?cs , jsyer +5V_A RESETA * MUBT5O3SL +9¥_A 186A1s +5V—A 1262 '1———— TP§ T’ LP339MX l T T 18BA123 R261 , CTRE |, 24.9K IN ouT @ PWRD l l Ttrato Auf AGKD *L carr Toour C228 _L 6. 150pF g R254 2 trrs v2000 6y 200K esy1zo0 E——-} Tk_vcC 1 ? R2sB 1268 1.50K — R2s1 =— AGND 100% AGNO g R250 100K 250 R2s0 T WY 200K 6 l TPM M2p® Resi R2os o 100K 499K f o U 4+5V_A —= 6 as AGo —= AGxo $ 2N7002 — ASND Group Designators unggezux —$29° 188A123 o duF B R31 C R32 D R33 1.00K 1.00% 1.00K A & R34 1.00K 1.00K R37 R36 R3S 1.00K 1.00% 1.00K H C F TABLE 2 AUDIO BOARD Frequency Dependant Parts By Group and Part Number PCB ASSEMBLY]|COUNTRY|FREQUENC CcouNnTRY R19 R20 R21 R22 R26 R27 R28 |R29 |R30 R31 R32 |R33 R34 R35 |R36 |R37 C4 C€24 C35 C210 C211 |C254 L2 9 R1 R2 R3 R6 R7 R8 R9 R10 Ri1 R12 R13 R16 |R287 |R289 R264 R265 |R233 NUMBER CcODE |RANGE DESIGNATION |ohms |ohms |ohms |ohms |ohms |ohms |ohms |ohms |ohms [ohms |ohms |ohms |johms |ohms |ohms |ohms uF ur pF uF uF ur a1 Q OHM |KOHM |KOHM [KOKM [KOHM |KoKM |KoHm |moHim [Konm oxm [morHn oHm [Konm [Korm 42 komm KOHM |KOHM 90A8763 UA 782—806 |US & CANADA 9OB8763 NB, MC lesA01 t83A02 . 1884136 9008763 JA 797—806 JAPAN . . 183401 183402 249 — . . . . . 188A136 9008763 JB 806—810 JAPAN 90E8763 KK 838—862 ENGLAND 183401 183402 188136 9OF 8763 UB 692—716 |US & CANADA 9068763 =~* =~= undefined 9OHK8763 TT t * undetined ORIG. USED IN NOTES: 1. All resistors 1/16 Woatt, 1%, 0603 unless . NO TICE SHURE BROTHERS INC. otherwise specified. 2. Electrolytic capacitors shown in uFf x Volts. This drawing is the property of Shure Brothers 222 HARTREY AVE. All non—polar capacitors in uf _ 22. Incorporated and is disclosed to you in strict EVANSTON, IL 60202 and 5OV or more uniess otherwise specified. confidence and with the understanding that it PHONE 847—866—2205 4. The following symbols denote: is not to be reproduced, copied, or used except Microphones — Electronic Components for the purpose of producing tools or products exclusively for Shure Brothers Incorporated. DRAWN A.C. Voitage <> P.C. ground Copies of this drawing are to be made only P ferro . 5 Sros when necessary for the purpose stated above CHECKED D.C. Voltage /7‘7 Case ground and all copies must contain this Notice. This drowing and all copies must be returned on APPROVED K. Mikes NOTE: X,Y¥ SCALE CORRESPONDES TO THE X,Y COORDINATES IN SCHEMATIC CAPTURE. request. APPROVED _| orwe. no. 90—8763N—11 I I | I I | 1 I | I | I I I I I | I I I I I | | I | | | I I I I | I T O I I | | I | | I 1 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42


Document Created: 2019-06-16 11:55:07
Document Modified: 2019-06-16 11:55:07
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