Instruction/ maintenance manual of the product DCM 30D QSC Audio
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DCM Series Digital Cinema Monito r & Crossover Sy stem User Manual DCM 10 DCM 10D DCM 30 DCM 30D *TD-000265-00* TD-000265-00-A.
Important Safety Instructions & Explanation of symbols 1- Read these in structions . 2- Keep these in structions . 3- Heed all warnings. 4- Follow all instructions. 5- Do not use this apparatus near water . 6- Clean only with a dry cloth . 7- Do not block any ventilation opening s.
FEDERAL COMMUNICA TIONS COMMISSION (FCC) INFORMA TION NOTE: This equip ment has been tested and found to comply with th e limits for a class B digital dev ice, pursuant to part 15 of the FCC rules. These limits are desig ned to provide re asonable pr otection against harmf ul interference in a residential installation .
Introduction Thank you and co ngratulati ons on your purc hase of the QSC DCM Digit al Cin- ema Monitor . This product repres ents the sta te-of-the-a rt for cinema- based signal pr ocessing an d monito ring functi ons in a sin gle, integr ated syst em.
Sy stem Concepts Installer Features: •Provides Moni tor and Cr ossover f unctions in one box. •Minimizes th e amount of cabling required . Only 1 cable per am plifier channel pair . •Minimizes setup time, particularly in megaplex s with similar ro oms.
1- Power switch 2- Monitor output loudspeaker 3- Power “o n” and di agnostic s indica tor LEDs 4- Monitor source s elector bu ttons 5- Amplifier/Processor selector button 6- Monitor output test points 7- Bypass switch and indicator L ED 8- Monitor vo lume co ntrol 9.
Illustrations- Rear Panels DCM 10 and DCM 10D (Digital In puts only on DCM 10D model) DCM 30 and DCM 30D (Digital Inputs only on DCM 30D model) 1- Firmware update mode se lect 2- USB port 3- External .
Hardware Description Front Panel The front pa nel of the DCM series res embles traditio nal cinema mon itor produc ts. This provid es the proje ctionist a well known and easy to understand i nterface. Power Switch: The power on/off switch is the master cont rol for the DC M and the am plifiers conn ected to it.
Hardware Description (continued) NOTE: The DCM 10 and DCM 10D ha ve one output for ea ch surround zone an d 4 sub outputs. NOTE: All combining of the individual fre quency outputs (2-wa y , 3-way , or 4-way) is done automat ically , so all front panel moni - toring is of a full frequency signal.
Hardware Descri ption (continued) Rear Panel Amplifier DataPorts: Each DataPort provides two channels of audio from the DCM to the QSC amplifier in put, as well a s current and voltage monitoring of the amp’ s loudsp eaker outpu ts.
Hardware Description (continued) BYP ASS CROSSOVER MODE Switch : The BYP ASS CROSSOVER MODE switch routes the center chan nel input sign al through th e 2-way or 3-wa y bypass cross over on the DCM 30/ 30D. On the DCM 10/10D, the ce nter channe l is routed t hrough the 2 -way bypass cros sover or not proc essed at all (pas sive bypass).
Mounting Rack Mounting When rack mounti ng the DCM, s ecure the DCM to th e rack rails using four ma chine screws and washers o f the proper s ize. Most US rack equipment acce pt s #10-32 machines screws; length us ed depends upon applicat ion. The DC M will require 3-RU (rack units) of space.
Software Description DCM Manager Windows Software T o access the functions of th e DCM hardware , you must use QS C’ s DCM Manager 2007 co ntrol software . A USB cable is us ed to conne ct your PC to the DCM. One of the computer’ s availab le USB ports provide s communications be tween the DCM Manage r software and the DCM hardware.
Connections Making the re quired conn ections to t he DCM is simp le. Just make sure that you have all of the co rrect cables . “Mass-te rminatio n” connectors are used whe rever possib le. This re duces insta llation time fr om hours to minutes and ma kes any req uired conn ection changes fas t, easy , and reliable .
Connections (continued) DataPort The QSC DataPo rt conne ction carrie s input si gnals, am plifier output moni toring signa ls, remote a mplifier powe r on/ standby contro l, amplifier temperature, and more, all o n one cable. Each DataPort is clearly mar ked indica ting which channel’ s amplifier it should be connected to.
Connections (continued) MAIN ANALOG INPUT Pino ut Configurati on: 25-pin S ubD male to 25-pin SubD male. Pin # Signal Desc ription 1 Chassis Ground 2 Left + MAIN ANALOG INPUT 3 Left Center - 4 Chassis.
Connections (continued) DIGIT AL INPUT Pinout Configura tion: 25-p in SubD male to 25-pin Su bD male. Pin # Signal Descri ption 1 (not used) 2 (not used) DIGIT AL INPUT 3 ( n o t u s e d ) 4 (not used.
Connections (continued) Powered Subw oofer Screw termin al connections mak e it possible to send a balanc ed signal to a power ed subwoofer . This signal is bal anced and the circu itry is de signed for long cable r uns from the proje ction booth to the theater sc reen.
Sy stem Calibration When installing a typical ci nema sound sy stem, most of the calibration involves the Cinema Processor . Refer to the user manual for the Cinema Proc essor tha t you are usi ng.
T roubleshooting If the DCM Manager program is unable to commun icate with the DCM hardware... • V erify the USB cable con nections. Re- seat each ca ble-end. • T ry a known-good USB cable, if possible. • Confirm the USB port you are using is oper ating properly .
T roubleshootin g (continued) If theater audio is distorted ... • V erify that the DCM In put Clip LED i s not lit. If it is, the cinema processor out put signal needs to be turned down. •If any of the amplif ier CLIP warnin g LEDs are illuminat ing, the output level of the DCM must be reduced or ampl ifier input sen si- tivity must be reduced.
Specifications DCM Inputs, Main Analog, Surround EX Input Stage T ype Active balanc ed Impedance 20k ohms, Diff erential a nd Single-en ded Maximum Input Leve l +14 .
Specifications (continued) Hearing Impaired Output Output Stage T ype Sin gle-ended ba lanced impeda nce Output Impedanc e 50 ohms Nominal Output Level -11.8 dBu ( 200 mVrms) Loading Requir ements Rmin= 2k ohms, Cmax= 4 nano Farads AL T EQ Input Input T ype Contact clo sure across terminals Monitor Loudspe aker Driver 4.
How to Contact QSC Audio Products Mailing address: QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, CA 92626-1468 USA T elepho ne Numbers: Main Number (714) 754-6175 Sales & Marketing.
An important point after buying a device QSC Audio DCM 30D (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought QSC Audio DCM 30D yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data QSC Audio DCM 30D - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, QSC Audio DCM 30D you will learn all the available features of the product, as well as information on its operation. The information that you get QSC Audio DCM 30D will certainly help you make a decision on the purchase.
If you already are a holder of QSC Audio DCM 30D, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime QSC Audio DCM 30D.
However, one of the most important roles played by the user manual is to help in solving problems with QSC Audio DCM 30D. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device QSC Audio DCM 30D along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
