adt-audio SRC 51 Installation Manual Download

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Installation

Manual

Part I:

General Information

Power Supply Units

Audio Installation

a digitale Tonstudiotechnik Karl Jüngling • Inh. Dipl.-Ing. Gerd Jüngling

4-6 Scholtwiese • Gladbeck • 45966 • NRW • Germany • Phone: 0049 2043 51061 • Fax: 0049 2043 56844

E-Mail: [email protected] • Internet: www.adt-audio.com www.broadcast-console.com

Version 1.5/13 • English

adt-audio

5 1

SRC

Summary of Contents for SRC 51

Page 1: ...ion analoge digitale Tonstudiotechnik Karl Jüngling Inh Dipl Ing Gerd Jüngling 4 6 Scholtwiese Gladbeck 45966 NRW Germany Phone 0049 2043 51061 Fax 0049 2043 56844 E Mail info adt audio com Internet www adt audio com www broadcast console com Version 1 5 13 English adt audio 51 SRC ...

Page 2: ...tallation 6 1 3 Fail safe Power Supply 8 1 4 The Mains Power Supply of Audio Systems 9 1 5 Power Supply Connections 12 1 6 The pinning of the power supply plugs 13 2 Audio Installation in the Studio 14 2 1 Grounding 14 2 2 Common grounding problems 16 2 3 Cables 17 2 4 Planning of the installation 18 ...

Page 3: ... are necessary for fail safe power supply configurations and the implementation of the mains connections Part 2 is about the audio installation Besides detailed information about basic principles of audio installation and the methods of grounding this chapter contains all pinning diagrams pictures and graphics about the locations of the connectors and a detailed description of their functions Part...

Page 4: ...are capacity We recommend that you rather use a larger power supply version if the installation and or the mains supply is critical to ensure trouble free operation Mounting and Dimensions The power supply units can be rack mounted if the rack is stable enough to carry the weight of approx 35 kg 77 lb for the UPS10 The total width of the front panel is 483 mm The actual width behind the top plate ...

Page 5: ...age in steps of 10 V from 200 to 240 V with the 230 V version and in steps of 5 V from 100 to 120 V with the 115 V version The minimum mains voltage depends on this settings The tapped primary windings offer the choice to avoid unnecessary thermal stress caused by a very high mains voltage It is possible to find an appropriate compromise between regulation reserve and heat dissipation easily If yo...

Page 6: ... above the unit We recommend that you use such a plate to prevent conductive parts pieces of wires aluminum foils or any other conductive material to fall into the device thru the slotted cover sheet of the unit If you use a cover plate take care that the distance between the top of the unit and the additional cover plate is at least 5 cm 2 If the circumstances at the place of installation do not ...

Page 7: ...RICAL SAFETY ARE ALLOWED TO MODIFY OR REPAIR THE POWER SUPPLY UNITS The terminals for the primary voltage settings are clearly marked inside the power supply unit either on the mains transformer for the UPS1000 versions or on a separate terminal block for the UPS10 and UPS25 Make sure that you do not change any other wiring than the tapped primary winding Please consider Setting the mains voltage ...

Page 8: ...ve and below the power supply switching on the fans or a change of location 1 3 Fail safe Power Supply The C1000 and C1750 crossover units are optionally available if failsafe operation is required These unit can be used with all the power supply units The failsafe device is a passive diode cross over with an additional active failure response system The C1000 and C1750 cross over units are equipp...

Page 9: ...f the power supply units are installed in a separate room An additional control cable is needed for this remote section 1 4 The Mains Power Supply of Audio Systems ONLY QUALIFIED PERSONNEL SHOULD BE ALLOWED TO INSTALL AND OR MODIFY HAZARDOUS VOLTAGE ELECTRICAL SYSTEMS The examples we give are very general and are to be taken as SUCH IN ADDITION some details may not apply in your local area because...

Page 10: ...ible to share all equipment between the three phases in a way that the resulting current in the neutral conductor is zero The result of these considerations is that a separate current free conductor must be used for ground If the mains supply line is implemented as a five line cable that uses an additional conductor only for the ground you don t need to take care about this it s already done Howev...

Page 11: ...onnector Please make sure that this is not the case with your installation Let s put this together The base of a problem free installation of the entire studio system is a solid high cross section ground that is directly connected to a low impedance ground node which is in most cases the mains power entry in the basement of a building This main audio ground should be used to connect the electric g...

Page 12: ...h off the power supply wait approximately 30 seconds and switch on again Cable length The cables that are usually used are high cross section multicore cables with 18 or 26 conductors and a cross section of 1 5 mm2 depending on the size of the console Two connector pins and two cable lines are used in parallel for the high current supply voltages audio audio and relay lamps to keep the voltage dro...

Page 13: ...ersion the current is much lower and the maximum cable length can be higher You can determine the maximum cable length for a particular console easily 1 6 The pinning of the power supply plugs The drawing shows the pinning of the power supply connector The cable power supply unit console is part of the standard accessories of each console 10 AUDIO 24 5 V 25 5V a b 11 AUDIO 24 5 V 25 5V a b 13 AUDI...

Page 14: ...nect the cable screens always at the input or the output of a device Connecting the screen to the inputs is problematic it only works properly if there are no lines that connect one output to more than one input If such lines exist care must be taken to insure that the second input has no screen connection This problem does not exist if only the outputs have the screen connected In this case the s...

Page 15: ...sult a qualified electrician regarding the installation of any new electrical supply or the modification of an existing supply By no means will we be liable for anything that you do Let s put this together We use the high cross section ground line from the basement of the building not only as audio ground node but also as protective ground If we now install additional high cross section ground con...

Page 16: ...oblems of audio installation and grounding 2 2 Common grounding problems Even if the principle of the ground installation is perfect some common situations should be considered Video This is the basic problem of any TV studio Since all video connections are unbalanced it is a hard job to maintain a clean audio ground situation with all the video equipment You will need many audio transformers to m...

Page 17: ... 20 kHz the skin depth is approx 0 3 mm With audio cables that usually have a diameter in the range of 0 2 to 0 4 mm this means that there is simply no skin effect As far as the impedance or wave resistance of a cable is concerned there is also no effect in the audio band The meaning of the wave resistance is not so easy to understand The speed of an electrical signal is in principal the speed of ...

Page 18: ... ohms mm2 This makes a difference of 11 2 Since silver plated cables have only a very thin silver surface of less than 10 micrometers the silver plating does not alter the total resistance of the cable at all As we have already seen also the skin effect that would be able to make the silver plating on the surface of the cable more important will not have any effect in the audio band What is much m...

Page 19: ...two grounds becomes a part of the audio signal The rules in brief Connect all cable screens to the console and leave the other end open If an external device is balanced connect both lines to hot and cold If the external device is unbalanced connect the hot phase to the unbalanced input or output and the cold phase to the ground of the external device Connect the screen to that end of the cable th...

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