Studer-900-mix-sm 维修电路原理图.pdf

RadioFans.CN 收音机爱 好者资料库RadioFans.CN 收音机爱 好者资料库1.913.101-.108/.321-.324/.605-.610 Date printed: 12.06.2002 10.27.1481 (0602) VU/PPM Meters 1 VU/PPM LED Level Meter Modules Contents 1 General.2 2 Functional Description.3 3 Technical Specifications.3 4 Block Diagram .4 5 Alignment.4 Diagrams PCB No. Diagram Component Layout Parts List VU/PPM 30 LED with GRM 1.913.293.00 1.913.293.00 VU/PPM 30 LED 1.913.294.00 1.913.293.00 1.913.293.00 1.913.294.00 LED PPM Meter (10 LED) 1.913.291.00 1.913.291.00 1.913.291.00 1.913.291.00 Scope of Validity These instructions apply to the following assemblies: Display 1 Channel, dark front panel 2 Channels, dark front panel 2 Channels, bright front panel 4 Channels, dark front panel PCB No. PPM 1.913.101 1.913.105 1.913.605 1.913.321 1.913.294 VU 1.913.102 1.913.106 1.913.606 1.913.322 1.913.294 PPM w. GRM 1.913.103 1.913.107 - 1.913.323 1.913.293 VU w. GRM 1.913.104 1.913.108 - 1.913.324 1.913.293 PPM w. additional small level meter - - 1.913.610 - 1.913.294, 1.913.291 1.913.101-.108/.321-.324/.605-.610 2 VU/PPM Meters 10.27.1481 (0602) Date printed: 12.06.2002 1 General The Level Meter units with 30 LEDs have been developed for installation in the display panel of Studer Mixing Consoles. Instruments with VU (vol-ume unit) and PPM (peak program meter) characteristics, with or without gain reduction meter (GRM) are available. Instead of bar-graph indication, also dot indication is optionally available. The instruments listed below are equipped with the PCBs 1.913.294 (VU or PPM) or 1.913.293 (VU or PPM with gain reduction meter) according to the table above. Please consult the circuit diagram relating to the corre-sponding assembly number. VU Meters: PPM Meters: 2010dBGRM20dB10753210123+VU10080406020%2010dBGRM20dB10753210123+VU10080406020%1008080406020%2010dBGRM20dB10753210123+VU10080406020%2010dBGRM20dB10753210123+VU10080406020%2010dBGRM20dB10753210123+VU10080406020%2010dBGRM20dB10753210123+VU10080406020%1002010dBGRMdB12+PPM2010dBGRM2010dBGRM2010dBGRM2010dBGRM2010dBGRM606121824dB12+PPM606121824dB12+PPM606121824dB12+PPM606121824dB12+PPM606121824dB12+PPM60612182420dB10753210123+VU10080406020%1008080406020%100dB12+PPM606121824dB12+PPM606121824 7+ 3+ 2+ 10 1 3 51020dB+ 3+ 2+ 10 1 3 51020dB1.913.102 *1.913.1041.913.106 *1.913.1081.913.322 *1.913.3241.913.101 *1.913.1031.913.105 *1.913.1071.913.321 *1.913.323* Versions without gain reduction meter (GRM)1.913.606 *1.913.605 *1.913.610 *404012017017040401204040401901901.913.101-.108/.321-.324/.605-.610 Date printed: 12.06.2002 10.27.1481 (0602) VU/PPM Meters 3 2 Functional Description PPM: The peak program meter is a quasi-peak value instrument with long decay time. When a signal voltage corresponding to a level of 0 dB is applied for 10 ms, the resulting indication is 1 dB. Decay time (0 to 20 dB) is 1.7 s. VU Meter: The VU meter indicates signals according to the standard defined by ANSI 1954. When a signal with a duration of 300 ms is applied, the indication is 99% of the reference value. Rise and decay times on a VU meter are iden-tical. The factory-set lead is +6 dB. Gain Reduction Meter: When the limiter/compressor is switched on, the GRM indicates the magni-tude of the gain reduction. Small PPM: The assembly 1.913.610 contains an additional small PPM meter with 10 LEDs, normally used for AUX level indication. Bar/Dot Display Selection: On each of the PCBs, selection of bar or dot display mode is provided. All level meters are factory-set to bar display mode; dot display mode is un-usual and recommended only if extra-low current consumption is required. PCB No. Bar Display Mode (Default Factory Setting) Dot Display Mode 1.913.293.00 (VU/PPM 30 LED w. GRM) insert: R3, R8, R10, R15 remove: R4, R9, R11, R14 insert: R4, R9, R11, R14 remove: R3, R8, R10, R15 1.913.294.00 (VU/PPM 30 LED) insert: R3, R8, R10 remove: R4, R9, R11 insert: R4, R9, R11 remove: R3, R8, R10 1.913.291.00 (PPM 10 LED) insert jumper JS201 remove jumper JS201 3 Technical Specifications General: 0 dBu 0.775 Vrms Sensitivity for reference indication 1 dBu . +16 dBu Input impedance 10 k Supply 15 VDC +24 VDC Quiescent: 45 mA 35 mA Current consumption without GRM (p. ch., bar display mode) Full load: 80 mA 80 mA Quiescent: 55 mA 45 mA Current consumption with GRM (p. ch., bar display mode) Full load: 105 mA 105 mA VU Meter (1.913.293): Indication range 20 VU . +3 VU Accuracy (conditions: 10.+3 VU, 0.+50 C, 31.5 Hz.16 kHz) 1 segment Response time to 1 VU 207 ms 30 ms PPM (1.913.293): Indication range 30 dBu . +15 dBu Accuracy (conditions: 30.+15 VU, 0.+50 C, 31.5 Hz.16 kHz) 1 segment Dynamic behavior 0 dB, 10 ms burst Indication: 1 dB 0.5 dB Jumper normal 0 dB, 3 ms burst Indication: 4 dB 1 dB Jumper fast 0 dB, 100 s burst Indication: 1 dB Decay time: 0.20 dB 1.7 s 0.3 s GRM (1.913.294): Input voltage range min. control: 0 V . +2 VDC max. control: 0 V . +11 VDC Dimensions: 1- and 2-channel units, dark front panel (w h d) 40 170 97 mm 2-channel units, bright front panel (w h d) 40 190 97 mm 4-channel units, dark front panel (w h d) 120 170 97 mm 1.913.101-.108/.321-.324/.605-.610 4 VU/PPM Meters 10.27.1481 (0602) Date printed: 12.06.2002 4 VU/PPM Meter Block Diagram VU/PPM meter block diagram: VU/PPM/PPM FAST and LIN/LOG settings are established with jumpers J2 and J3, respectively. 5 Alignment Required Instruments: AC voltmeter, Ri 20 k DC voltmeter, Ri 100 k AF generator, 31.5 Hz . 16 kHz, 0.16 dBu; attenuator with 10 dB incre-ments. DC/DC Converter Check: Connect DC voltmeter to TP5 (hot) and TP4 (ground). Feed generator out-put signal with line level (1.+16 dBu) to the input (pins 5 and 7 of P1, or TP8 and TP9); all green LEDs are on. DC voltmeter reading should be: 3.1 0.1 VDC (supply: +24 VDC), 4.1 0.1 VDC (supply: +30 VDC). Input Range: Feed generator output signal with line level (1 kHz, 1.+16 dBu) to the input (pins 5 and 7 of P1, or TP8 and TP9). Connect AC voltmeter to test points TP1 (hot) and TP4 (ground). Reading must be adjustable with RA3 to 290 10 mVAC for the complete input level range. Line Level: Feed generator output signal with your line level (1 kHz, range: 1.+16 dBu) to the input (pins 5 and 7 of P1, or TP8 and TP9). Adjust RA3 until all green LEDs are on. The red LEDs must be dark. (TP3: 2.5 0.1 VDC). Rectifier and Indication: Set J2 to VU, J3 to LIN. Feed generator output signal with your line level (1 kHz, usually 0 dBu) to the input (pins 5 and 7 of P1, or TP8 and TP9). Connect AC voltmeter to test points TP1 (hot) and TP4 (ground). Adjust with RA3 to 290 10 mVAC. All green LEDs must be on. Connect DC voltmeter to test points TP2 (hot) and TP4 (ground); the meter should read 380 15 mVDC. Connect DC voltmeter to test points TP3 (hot) and TP4 (ground); the meter should read +2.575 0.100 VDC. All green LEDs must be on. Check: Set generator output for a DC voltmeter reading of 3.8 0.1 VDC. All LEDs must be on. Set generator output for a DC voltmeter reading of 170 20 mVDC. Only the lowest LED must be on. TP1TP3TP2LIN (VU)LOG (PPM)LOGT213PPMPPM FASTVU1.+16 dBu24.30 VDC3.4.5 VDC (LED)10 LED red20 LED grnDCDC1.913.101-.108/.321-.324/.605-.610 Date printed: 12.06.2002 10.27.1481 (0602) VU/PPM Meters 5 Log Converter (PPM only): Set J2 to PPM, J3 to LOG. Feed generator output signal (1 kHz, +6 dBu) to the input (pins 5 and 7 of P1, or TP8 and TP9). Connect DC voltmeter to test points TP2 (hot) and TP4 (ground). Adjust with RA3 to 1.18 0.05 VDC. RA1 and RA2: Basic setting according to the arrows in the diagram below. Procedure: 1. Upper value setting: Adjust with RA2 to 3.06 0.10 VDC. All green LEDs and four red LEDs must be on (+6 dB indication). 2. Set generator output to 24 dBu (i.e., attenuate the +6 dBu setting from above by 30 dB). 3. Lower value setting: Adjust with RA1 to 560 20 mVDC. Only the four lowest green LEDs must be on (24 dB indication). 4. These two settings are interdependent, therefore repeat steps 1.3 sev-eral times. GRM (if included): Connect the Meter Unit to the console. Feed a test signal via an input channel. Set the level on the master output to nominal level +20 dB. Switch the limiter on. Align with RA4 to a GRM indication of 20 dB. 1.913.101-.108/.321-.324/.605-.610 6 VU/PPM Meters 10.27.1481 (0602) Date printed: 12.06.2002 Line Level for 1.913.291: Feed generator output signal with your line level (1 kHz, range: +6.+15 dBu) to the input (pins 5 and 7 of P201, or TP5 and TP4). Adjust R204 until all green LEDs are on. The red LEDs must be dark. 1.913.101-.108/.321-.324/.605-.610 Date printed: 12.06.2002 10.27.1481 (0602) VU/PPM Meters 5 not used for 1.913.294not used for 1.913.294VU/PPM/GRM Meter 1.913.293.00 1.913.101-.108/.321-.324/.605-.610 8 VU/PPM Meters 10.27.1481 (0602) Date printed: 12.06.2002 P101.P136, P301.P313 on solder sideComponent side VU/PPM/GRM Meter 1.913.293.00 Part No.Qty.Type/Val.DescriptionPos.Idx.Part No.Qty.Type/Val.DescriptionPos.Idx.1.913.101-.108/.321-.324/.605-.610Page: 1 of 2VU/PPM/GRM Meter 1.913.293.00 ( 4)C 159.60.3337100nCER 50V, 10%, X7R, 080501 pceC 259.60.3337100nCER 50V, 10%, X7R, 080501 pceC 359.60.3337100nCER 50V, 10%, X7R, 080501 pceC 459.60.3337100nCER 50V, 10%, X7R, 080501 pceC 559.60.3337100nCER 50V, 10%, X7R, 080501 pceC 659.60.3337100nCER 50V, 10%, X7R, 080501 pceC 759.60.3337100nCER 50V, 10%, X7R, 080501 pceC 859.60.3337100nCER 50V, 10%, X7R, 080501 pceC 959.60.3337100nCER 50V, 10%, X7R, 080501 pceC 1059.60.3337100nCER 50V, 10%, X7R, 080501 pceC 1159.60.3337100nCER 50V, 10%, X7R, 080501 pceC 1259.60.23731n0CER 50V, 5%, C0G, 080501 pceC 1359.60.224147pCER 50V, 5%, C0G, 060301 pceC 1459.60.3337100nCER 50V, 10%, X7R, 080501 pceC 1559.60.3337100nCER 50V, 10%, X7R, 080501 pceC 1659.68.0033470uEL 6V, 8.0*10.701 pceC 1759.60.2361330pCER 50V, 5%, C0G, 080501 pceC 1859.68.0033470uEL 6V, 8.0*10.701 pceC 1959.68.0073220uEL 16V, 8.0*10.701 pceC 2059.60.2361330pCER 50V, 5%, C0G, 080501 pceC 2159.68.0033470uEL 6V, 8.0*10.701 pceC 2259.68.0073220uEL 16V, 8.0*10.701 pceC 2359.60.3337100nCER 50V, 10%, X7R, 080501 pceC 2459.60.23731n0CER 50V, 5%, C0G, 080501 pceC 2559.60.23731n0CER 50V, 5%, C0G, 080501 pceC 2659.60.3337100nCER 50V, 10%, X7R, 080501 pceC 2759.60.3337100nCER 50V, 10%, X7R, 080501 pceC 2859.60.3337100nCER 50V, 10%, X7R, 080501 pceC 2959.60.23731n0CER 50V, 5%, C0G, 080501 pceC 3059.60.3337100nCER 50V, 10%, X7R, 080501 pceC 3159.60.2369680pCER 50V, 5%, C0G, 080501 pceC 3259.60.3337100nCER 50V, 10%, X7R, 080501 pceC 3359.60.3337100nCER 50V, 10%, X7R, 080501 pceC 3459.68.0073220uEL 16V, 8.0*10.701 pceC 3559.68.0073220uEL 16V, 8.0*10.701 pceC 3659.60.23731n0CER 50V, 5%, C0G, 080501 pceC 3759.60.3337100nCER 50V, 10%, X7R, 080501 pceC 3859.60.3337100nCER 50V, 10%, X7R, 080501 pceC 3959.60.224147pCER 50V, 5%, C0G, 060301 pceC 4059.60.333347nCER 50V, 10%, X7R, 080501 pceC 4159.60.3337100nCER 50V, 10%, X7R, 080501 pceD 150.60.80014448200mA 75V 4ns SOD 8001 pceD 250.60.80014448200mA 75V 4ns SOD 8001 pceD 350.60.80014448200mA 75V 4ns SOD 8001 pceD 450.60.80014448200mA 75V 4ns SOD 8001 pceD 550.60.80014448200mA 75V 4ns SOD 8001 pceD 650.60.80014448200mA 75V 4ns SOD 8001 pceD 750.60.80014448200mA 75V 4ns SOD 8001 pceD 850.60.80014448200mA 75V 4ns SOD 8001 pceDL 150.04.2150MV5716410*LED-Bargraf rot diffus01 pceDL 250.04.2161GRNDLZ MV 54 164,LTA1000G 10*D GN01 pceDL 350.04.2161GRNDLZ MV 54 164,LTA1000G 10*D GN01 pceDL 450.04.2150MV5716410*LED-Bargraf rot diffus01 pceDV 150.60.901710V5%, 0.2W, SOT 2301 pceDV 250.60.901710V5%, 0.2W, SOT 2301 pceDV 350.60.90105V15%, 0.2W, SOT 2301 pceDV 450.04.11125V1Zener, 5%, 0.5W, DO-3541 pceIC 150.11.0119LM3914IC LM 3914 N,01 pceIC 250.11.0119LM3914IC LM 3914 N,01 pceIC 350.11.0119LM3914IC LM 3914 N,01 pceIC 450.11.0119LM3914IC LM 3914 N,01 pceIC 550.61.0204MC33078 Dual Op-Amp low noise01 pceIC 650.61.0207LF353Dual Op-Amp JFET SO 801 pceIC 750.61.0209LF412Dual Op-Amp JFET SO 831 pceIC 850.61.0207LF353Dual Op-Amp JFET SO 801 pceIC 950.61.0204MC33078 Dual Op-Amp low noise11 pceJ 254.01.0021Jumper0.63*0.63mm, Au01 pceJ 354.01.0021Jumper0.63*0.63mm, Au01 pceMP 11.913.293.11VU/PPM/GRM METER PCB01 pceMP 21.913.293.10NR.-ETIKETTE 5 * 2001 pceMP 343.01.0108LabelESE-Warnschild01 pceMP 428.99.0119ROHRNIETE D 2.5*0.15* 902 pcsMP 51.010.057.22M3*7.4Nietmutter sw 601 pceMP 61.010.057.22M3*7.4Nietmutter sw 601 pceMP 71.010.057.22M3*7.4Nietmutter sw 601 pceMP 81.010.057.22M3*7.4Nietmutter sw 601 pceMP 943.10.0113DRevisions-Etikette 5mm hblau41 pceP 154.14.201110pWinkelstecker Au01 pceP 254.11.01362*3pPin 0.63*0.63, RM2.5401 pceP 354.11.01362*3pPin 0.63*0.63, RM2.5401 pceP 10254.11.01251pPin, 1reihig, winkel01 pceP 10354.11.01251pPin, 1reihig, winkel01 pceP 10454.11.01251pPin, 1reihig, winkel01 pceP 10554.11.01251pPin, 1reihig, winkel01 pceP 10654.11.01251pPin, 1reihig, winkel01 pceP 10754.11.01251pPin, 1reihig, winkel01 pceP 10854.11.01251pPin, 1reihig, winkel01 pceP 10954.11.01251pPin, 1reihig, winkel01 pceP 11054.11.01251pPin, 1reihig, winkel01 pceP 11154.11.01251pPin, 1reihig, winkel01 pceP 11254.11.01251pPin, 1reihig, winkel01 pceP 11354.11.01251pPin, 1reihig, winkel01 pceP 11454.11.01251pPin, 1reihig, winkel01 pceP 11554.11.01251pPin, 1reihig, winkel01 pceP 11654.11.01251pPin, 1reihig, winkel01 pceP 11754.11.01251pPin, 1reihig, winkel01 pceP 11854.11.01251pPin, 1reihig, winkel01 pceP 11954.11.01251pPin, 1reihig, winkel01 pceP 12054.11.01251pPin, 1reihig, winkel01 pceP 12154.11.01251pPin, 1reihig, winkel01 pceP 12254.11.01251pPin, 1reihig, winkel01 pceP 12354.11.01251pPin, 1reihig, winkel01 pceP 12454.11.01251pPin, 1reihig, winkel01 pceP 12554.11.01251pPin, 1reihig, winkel01 pceP 12654.11.01251pPin, 1reihig, winkel01 pceP 12754.11.01251pPin, 1reihig, winkel01 pceP 12854.11.01251pPin, 1reihig, winkel01 pceP 12954.11.01251pPin, 1reihig, winkel01 pceP 13054.11.01251pPin, 1reihig, winkel01 pceP 13154.11.01251pPin, 1reihig, winkel01 pceP 13254.11.01251pPin, 1reihig, winkel01 pceP 13354.11.01251pPin, 1reihig, winkel01 pceP 13454.11.01251pPin, 1reihig, winkel01 pceP 13554.11.01251pPin, 1reihig, winkel01 pceP 13654.11.01251pPin, 1reihig, winkel01 pceP 30154.11.01251pPin, 1reihig, winkel01 pceP 30254.11.01251pPin, 1reihig, winkel01 pceP 30354.11.01251pPin, 1reihig, winkel01 pceP 30454.11.01251pPin, 1reihig, winkel01 pceP 30554.11.01251pPin, 1reihig, winkel01 pceP 30654.11.01251pPin, 1reihig, winkel01 pceP 30754.11.01251pPin, 1reihig, winkel01 pceP 30854.11.01251pPin, 1reihig, winkel01 pceP 30954.11.01251pPin, 1reihig, winkel01 pceP 31054.11.01251pPin, 1reihig, winkel01 pceP 31154.11.01251pPin, 1reihig, winkel01 pceP 31254.11.01251pPin, 1reihig, winkel01 pceP 31354.11.01251pPin, 1reihig, winkel01 pceQ 150.60.1002BC860CPNP 45V 100mA SOT 2301 pceQ 250.60.1002BC860CPNP 45V 100mA SOT 2301 pceQ 350.60.0050BC817-25NPN 45V 800mA SOT 2301 pceQ 450.60.1050BC807-25PNP 45V 800mA SOT 2301 pceQ 550.60.1002BC860CPNP 45V 100mA SOT 2301 pceQ 650.60.1002BC860CPNP 45V 100mA SOT 2301 pceR 157.60.12222k2MF, 1%, 0204, E2401 pceR 257.60.122322kMF, 1%, 0204, E2401 pceR 357.60.10000R0MF, 020401 pceR 4not used0R0MF