Alto-ACL2Pro-cl-sm维修电路原理图.pdf

Service Manual Model: ACL2 PRO Compressor/Limiter Version: 1.1 RadioFans.CN 收音机爱 好者资料库CONTENTS 1. Specification 2. Block Diagram 3. Schematic Diagram 4. Printed Circuit Board 5. Wiring Diagram 6. Test Procedure 7. Electrical Parts List 8. Exploded Views & Mechanical Parts List 9. Troubleshooting 10. Notes RadioFans.CN 收音机爱 好者资料库SPECIFICATIONS FOR ACL2 PRO INPUT Connectors XLR and 1/4” TRS (Pin 2 and Tip hot) Type Electronically balanced/unbalanced, RF filtered Impedance Balanced 50Kohm, Unbalanced25Kohm Nominal operating level +4dBu/-10dBV switchable Max input level +24dBu balanced and unbalanced CMRR Typically50dB at 1KHz OUTPUT Connectors XLR and 1/4” TRS (Pin 2 and Tip hot) Type Electronically balanced/unbalanced, RF filtered Impedance Balanced 120ohm, Unbalanced60ohm Max output level +21dBu,+20dBm balanced and unbalanced SIDECHAIN INPUT Connectors 1/4” TRS (Tip hot) Type RF-rejecting, DC de-coupled, unbalanced input Impedance 10Kohm Max input level +24dBu SIDECHAIN OUTPUT Connectors 1/4” TRS (Tip hot) Type RF-rejecting, DC de-coupled, unbalanced output Impedance 2Kohm Max input level +21dBu SYSTEM SPECIFICATIONS Bandwidth 20HZ to 20kHz, +0/-0.5dB Frequency Response 0.35Hz to 200kHz,+0/-3dB Noise -95dBu, unweighted, 22Hz to 22kHz THD 0.008% Typical at +4dBu, 1kHz, unity gain 0.04% Typical at +20dBu, 1kHz, unity gain IMD 0.1% Typical SMPTE Crosstalk -100dB, 22Hz to 22Khz Stereo Coupling True RMS detection RadioFans.CN 收音机爱 好者资料库EXPANDER/GATE SECTION Type Interactive Expander (Interactive Ratio Control) Threshold variable (OFF to +15dB) Ratio variable (1:1 to 1:8) Attack 1ms/50dB, program dependent Release variable (SLOW:100ms/1dB,FAST:100ms/100Db) COMPRESSOR SECTION Type Interactive Compressor (Interactive Knee Adaptation) Threshold variable (-40dB to +20dB) Ratio variable (1:1 to :1) Threshold Characteristic variable (Interactive or Hard Knee) Manual Attack Time variable (0.5ms to 100ms / 20dB Manual Release Time variable from 0.05 ms to 5s / 20dB Auto Attack Time Typical 15ms at 10dB, 5ms at 20dB, 3ms at 30dB Auto Release Time Program dependent, typical 125dB/s Output level variable (-20dB to +20dB) PEAK LIMITER SECTION Type Interactive Gain Control Peak Limiter Threshold variable (+4dB to OFF (+22dBu) Ratio :1 Stage 1 Limiter Type Clipper Attack Time “zero” Release Time “zero” Stage 2 Limiter Type Program Limiter Attack program dependent, typ. 5ms Release program dependent, typ. 20dB/s FUNCTION SWITCHES SC EXTERN Switches the detector section to the external SC input. SC MON Monitoring the external SC input, disengaging the normal audio. INTERACTIVE Enables the “Interactive Knee Adaptation” characteristics. CONTOUR Allows for frequency dependent detection. AUTO Enable the automatic and program dependent setting of the Attack-/Release times, disengaging the manual Attack-/Release controls. I/O METER Switches between input and output for the Level Meter. IN/OUT Relay controlled hard-bypass OPERATING LEVEL Changes the internal reference level from +4 dBu to 10dBu. COUPLE Linking both channels for stereo operation. Channel 1 becomes master. RadioFans.CN 收音机爱 好者资料库INDICATORS GAIN REDUCTION 12 element LED display: 1/2/4/6/9/12/15/18/21/24/27/30 dB. INPUT/OUTPUT LEVEL 8 element LED display: -30/-24/-18/-12/-6/0/+3/+6/+9/+12/+18 dB Expander/Gate Threshold 2 LED for under “+” and above “-“ Compressor Threshold 3 LEDs for under “+”,Interactive “0” and above “-“ Peak Limiter Threshold 1 LED for indication of limiter function. Function switch LED indicator for each POWER SUPPLY USA/Canada 120VAC, 60Hz U.K./Australia 240VAC, 50Hz Europe 230VAC, 50Hz Mains Voltages General Export Model 100-120VAC, 200-240VAC, 50-60Hz Fuse 100-120VAC : 400mA (SLOW-BLOW) 200-240VAC : 200mA (SLOW-BLOW) Power consumption 14 Watts Mains Connection Standard IEC receptacle PHYSICAL Dimension W(483.0)*D(198.0)*H(44.2) mm Net Weight 3.3Kg RadioFans.CN 收音机爱 好者资料库1234ABCD4321DCBA21343c5e1a4d2bINPUTSGND3c5e1a4d2b3c5e1a4d2bOPERATING LEVEL-10dBv+4dBu21343c5e1a4d2bSGNDSGNDOUTPUTOPERATING LEVEL-10dBvCOMPRESSORCOMPRESSORCONTROLEXPANDER/GATEEXPANDER/GATE CONTROLPEAK LIMITER CONTROLLIMITERSGNDSGNDVCA+4dBuOUTPUT LEVELGAIN REDUCTIONMETER STEREO LINKCH2 IS IDENTICAL TO CH1 EXCEPT FOR STEREO LINK MODEEXPANDER/GATE, COMPRESSOR,LIMITER ARE CONTROLLED BY CH1 IN STERO LINK MODEOUTPUTOUTPUTINPUTSIDECHAINSIDECHAINRETURNSENDFULL WAVERECTIFIER? ? ? ? ? ? ?COMP OUTBYPASSINPUT12345678ABCD87654321DCBAT5HRR61470R 1/4WR6339KLD57YE-15VLD55GN123PSW5APS-42E85L789PSW5CPS-42E85L123PSW3APS-42E85L456PSW3BPS-42E85LLD58GNLD59GNLD56YELD53RD123PSW7APS-22E85L123PSW6APS-22E85L123PSW4APS-22E85L123PSW1APS-22E85L+15VR6215KCH1-REDUCTIONCH1-LEVELCH2-REDUCTIONCH2-LEVELCLE20 DISPLAY SECTIONFP-LEDSCHCH1-REDUCTIONCH1-LEVELCH2-REDUCTIONCH2-LEVEL121314IC17DTL064D114148D124148D104148R21847KR21947K213IC11ACA3086453IC11BCA3086687IC11CCA308691110IC11DCA3086321IC12ATL06412314IC12DTL064R7047KR7147K121413IC11ECA3086R7510MR7210M-15v567IC12BTL064R7810K 1%R7910MR77523K 1%123VR1B50K+15V-15V-15VEX P A N D ER / G A T ET H R ES H O L D1098IC12CTL064R7410KC347PR2214K99 1%567IC13BTL064R851K5R8120KR842K2D14148D24148123VR2B10KC622uFD34148321IC13ATL064R87100KR8610KC53N3-15VEX P A N D ER / G A T E1: N R A T I OR803K1098IC13CTL064LD1GNLD2RDR8368K 1/4WR8268K 1/4W+15VT H R ES H O L D-15v567IC17BTL064R127523K 1%R125560KR126470R123VR8A20K+15VR12410KT H R ES H O L DP EA K L I MI T ER1098IC15CTL064R662M2R6539KR671K-15V121314IC13DTL064R118475R 1%R11717K4 1%R947K15 1%D44148167IC16BLM339C10022uFC1133uFC1222uFC922uFR11239KR11320KD94148321IC15ATL064R22312K1 1%+15VR114470RT7HR542IC16ALM3398914IC16CLM339LD5RDLD4YELD3GND7DZ 27V-15VT H R ES H O L DR1033K101113IC16DLM339D84148R10947KR10847KR11110KR110200R123VR5A50KR1074K7121314IC15DTL064R1051KC8220N(MEF)123VR4B50KR A T I O n : 1A T T A C KT6HRC O M P R ES S O R / L I MI T ERC O MP R ES S O R / L I MI T ERR10617K4 1%1098IC14CTL064R9210KR9110KC710NR934K7R9020KT3567IC14BTL064R98220KR9710K 1%R95412K 1%R961M5123VR3B50K-15V-15V+15VT H R ES H O L DD54148C O MP R ES S O R / L I MI T ER321IC14ATL064R100523K 1%R99523K 1%R102287K 1%+15VD64148R10115K101112PSW5DPS-42E85LR1154K7123VR6A50K456PSW5BPS-42E85LC O MP R ES S O R / L I MI T ERR EL EA S E101112PSW3DPS-42E85L789PSW3CPS-42E85LR88680K121314IC14DTL064-15VC4547uF/50VR222330KD444148+15V456PSW7BPS-22E85L-15V456PSW1BPS-22E85LR641K5 1%456PSW2BPS-22E85L456PSW6BPS-22E85LR6824K9 1%R6917K4 1%C1033uF456PSW4BPS-22E85LC41uFR764M7-15VT4R7310K123VR7B50K+15V-15VO U T P U T G A I NC O MP R ES S O R / L I MI T ERX20-3IC29-7CH1-REDUCTIONR10412K1 1%R116200RR2201KCH1-LEVELT3T4IC29-7SW14-1X20-3CH2-LEVELCH2-REDUCTIONCH1-REDUCTIONT4-1CH2FP-CH2SCHT3T4IC29-7SW14-1X20-3CH2-LEVELCH2-REDUCTIONCH1-REDUCTIONT4-1C471uF-15VCH1-LEVELCH1-REDUCTIONT3T4IC29-7SW14-1X20-332IC17ATL0641098IC17CTL064R12947KR12847KR13147KR13047KD134148D144148R1324M7R1362K2R1352K2R1334K7R1373KD164148D174148D184148D454148C16022uFT8BRT9BRLD26RD+15V+15VT H R ES H O L DL I MT3C1747uF/100VD154148R1341M-15V567IC15BTL064R121470KR122470KR11947KR120220KC14104PC13104PSW14-123PSW2APS-22E85L+15VR12315KLD54RDR891MS C MO NS C EX TI / 0 M ET ERS C F I L T ERB Y P A S SI N T ER A C T I V EI N T ER A C T I V EA U T OA U T OS C MO NS C EX TI / O MET ERB Y P A S SS C F I L T ERI N T ER A C T I V EA U T O( - )( 0)( + )EX P A N D ER / G A T E( - )( + )12345678910CN5CN10P-2.0C1547uF/100VEX P A N D ER / G A T ER EL EA S EC247NH R : 2 S A 1036( P N P )B R : 2 S C 2 412 ( N P N )F P - C H 1 M N . 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