Studer OnAir2000M2 User Manual

OnAir 2000 Modulo

Digital Mixing Console
SW Version 4.0

Installation and Service Instructions

Prepared and edited by Copyright by Studer Professional Audio GmbH
Studer Professional Audio GmbH Printed in Switzerland
Technical Documentation Order no. 10.27.5011 (Ed. 0303)
Althardstrasse 30
CH-8105 Regensdorf – Switzerland
http://www.studer.ch Subject to change

Studer is a registered trade mark of Studer Professional Audio GmbH, Regensdorf

A Safety Information

To reduce the risk of electric shock, do not remove covers (or back). No
user-serviceable parts inside. Refer servicing to qualified service person­nel.

This symbol is intended to alert the user to presence of un-insulated dan-
gerous voltage within the equipment that may be of sufficient magnitude
to constitute a risk of electric shock to a person.

This symbol is intended to alert the user to the presence of important in-
structions for operating and maintenance in the enclosed documentation.

Safety Information

CLASS I

LED PRODUCT

Assemblies or sub-assemblies of this product can contain opto-electronic
devices. As long as these devices comply with Class I of laser or LED
products according to EN 60825-1:1994, they will not be expressly

CLASS I

LASER PRODUCT

marked on the product. If a special design should be covered by a higher
class of this standard, the device concerned will be marked directly on
the assembly or sub-assembly in accordance with the above standard.

A1 First Aid

In Case of Electric Shock: Separate the person as quickly as possible from the electric power source:

• By switching off the equipment,

• By unplugging or disconnecting the mains cable, or

• By pushing the person away from the power source, using dry insulating
material (such as wood or plastic).

• After having sustained an electric shock, always consult a doctor.

Warning! Do not touch the person or his clothing before the power is turned off,

otherwise you stand the risk of sustaining an electric shock as well!

If the Person is Unconscious: • Check the pulse,

• Reanimate the person if respiration is poor,

• Lay the body down, turn it to one side, call for a doctor immediately.

Date printed: 26.04.04 I

Installation

B General Installation Hints

Please consider besides these general hints also any product-specific hints
in the "Installation" chapter of this manual.

B1 Unpacking

Check the equipment for any transport damage. A unit that is mechanically
damaged or that has been penetrated by liquids or foreign objects must not
be connected to the AC power outlet or must be immediately disconnected
by unplugging the power cable. Repairs must only be performed by trained
personnel in accordance with the applicable regulations.

B2 Installation Site

Install the unit in a place where the following conditions are met:

• The temperature and the relative humidity of the environment must be
within the specified limits during operation of the unit. Relevant air val­ues are the ones at the air inlets of the unit.

• Condensation must be avoided. If the unit is installed in a location with
large variation of ambient temperature (e.g. in an OB-van), feasible
measures must be taken before and after operation (for details on this
subject, refer to Appendix 1).

• Unobstructed air flow is essential for proper operation. Air vents of the
unit are a functional part of the design and must not be blocked in any
way during operation (e.g. by objects placed upon them or placement of
the unit on a soft support).

• The unit must not be heated up by external sources of heat radiation
(sunlight, spot lights).

B3 Earthing and Power Supply

Earthing of units with mains supply (class I equipment) is performed via
the protective earth (PE) conductor integrated in the mains cable. Units
with battery operation (< 60 V, class III equipment) must be earthed sepa­rately.
Earthing the unit is one of the measures for protection against electrical
shock hazard (dangerous body currents). Hazardous voltage may not only
be caused by a defective power supply insulation, but may also be intro­duced by the connected audio or control cables.
If the unit is installed with one or several external connections, its earthing
must be provided during operation as well as while the unit is inoperative.
If the earthing could be interrupted via the power supply (e.g. by pulling
the mains plug), an additional, permanent earthing must be installed using
the provided earth terminal.
Avoid ground loops (hum loops) by keeping the loop surface as small as
possible (by consequently guiding the earth conductors in a narrow, paral­lel way), and reduce the noise current flowing through the loop by inserting
an additional impedance (common-mode choke).

II Date printed: 26.04.04

Class I Equipment (Mains Operation)

Installation

Should the equipment be delivered without a matching mains cable, the
latter has to be prepared by a trained person using the attached female plug
(IEC320/C13 or IEC320/C19) with respect to the applicable regulations in
your country.
Before connecting the equipment to the AC power outlet, check that the
local line voltage matches the equipment rating (voltage, frequency) within
the admissible tolerance. The equipment fuses must be rated in accordance
with the specifications on the equipment.
Equipment supplied with a 3-pole appliance inlet (protection conforming to
class I equipment) must be connected to a 3-pole AC power outlet so that
the equipment cabinet is connected to the protective earth.
For information on mains cable strain relief please refer to Appendix 2.

Female plug (IEC320), front-side view: National American Standard:

L (Live) Brown Black

N (Neutral) Blue White

PE (Protective Earth Green/Yellow Green

Class III Equipment (Battery Operation up to 60 VDC)

Equipment of this protection class must be earthed using the provided earth
terminal, if one or more external signals are connected to the unit (see ex­planation at the beginning of this paragraph).

B4 Electromagnetic Compatibility (EMC)

The unit conforms to the protection requirements relevant to electromag­netic phenomena that are listed in the guidelines 89/336/EC and FCC, part

15.

• The electromagnetic interference generated by the unit is limited in such
a way that other equipment and systems can be operated normally.

• The unit is adequately protected against electromagnetic interference so
that it can operate properly.

The unit has been tested and conforms to the EMC standards of the speci­fied electromagnetic environment, as listed in the following declaration.
The limits of these standards ensure protection of the environment and cor­responding noise immunity of the equipment with appropriate probability.
However, a professional installation and integration within the system are
imperative prerequisites for operation without EMC problems.
For this purpose, the following measures must be followed:

• Install the equipment in accordance with the operating instructions. Use
the supplied accessories.

• In the system and in the vicinity where the equipment is installed, use
only components (systems, equipment) that also fulfill the EMC stan­dards for the given environment.

• Use a system grounding concept that satisfies the safety requirements
(class I equipment must be connected with a protective ground conduc-

Date printed: 26.04.04 III

Installation/Maintenance/ESD

tor) and that also takes into consideration the EMC requirements. When
deciding between radial, surface, or combined grounding, the advan­tages and disadvantages should be carefully evaluated in each case.

• Use shielded cables where shielding is specified. The connection of the
shield to the corresponding connector terminal or housing should have a
large surface and be corrosion-proof. Please note that a cable shield
connected only single-ended can act as a transmitting or receiving an­tenna within the corresponding frequency range.

• Avoid ground loops or reduce their adverse effects by keeping the loop
surface as small as possible, and reduce the noise current flowing
through the loop by inserting an additional impedance (e.g. common­mode choke).

• Reduce electrostatic discharge (ESD) of persons by installing an appro­priate floor covering (e.g. a carpet with permanent electrostatic fila­ments) and by keeping the relative humidity above 30%. Further meas­ures (e.g. conducting floor) are usually unnecessary and only suitable if
used together with corresponding personal equipment.

• When using equipment with touch-sensitive operator controls, please
take care that the surrounding building structure allows for sufficient
capacitive coupling of the operator. This coupling can be improved by
an additional, conducting surface in the operator’s area, connected to the
equipment housing (e.g. metal foil underneath the floor covering, carpet
with conductive backing).

C Maintenance

All air vents and openings for operating elements (faders, rotary knobs)
must be checked on a regular basis, and cleaned in case of dust accumula­tion. For cleaning, a soft paint-brush or a vacuum cleaner is recommended.
Cleaning the surfaces of the unit is performed with a soft, dry cloth or a
soft brush.
Persistent contamination can be treated with a cloth that is slightly humidi­fied with a mild cleaning solution (soap-suds).
For cleaning display windows, commercially available computer/TV
screen cleaners are suited. Use only a slightly damp (never wet) cloth.

Never use any solvents for cleaning the exterior of the unit! Liquids must
never be sprayed or poured on directly!

For equipment-specific maintenance information please refer to the corre­sponding chapter in the Operating and Service Instructions manuals.

D Electrostatic Discharge during Maintenance and Repair

Caution: Observe the precautions for handling devices sensitive to electrostatic dis-

charge!
Many semiconductor components are sensitive to electrostatic discharge
(ESD). The life-span of assemblies containing such components can be
drastically reduced by improper handling during maintenance and repair
work. Please observe the following rules when handling ESD sensitive
components:

• ESD sensitive components should only be stored and transported in the
packing material specifically provided for this purpose.

• When performing a repair by replacing complete assemblies, the re­moved assembly must be sent back to the supplier in the same packing

IV Date printed: 26.04.04

E Repair

ESD/Repair

material in which the replacement assembly was shipped. If this should
not be the case, any claim for a possible refund will be null and void.

• Unpacked ESD sensitive components should only be handled in ESD
protected areas (EPA, e.g. area for field service, repair or service bench)
and only be touched by persons who wear a wristlet that is connected to
the ground potential of the repair or service bench by a series resistor.
The equipment to be repaired or serviced as well as all tools and electri­cally semi-conducting work, storage, and floor mats should also be con­nected to this ground potential.

• The terminals of ESD sensitive components must not come in uncon­trolled contact with electrostatically chargeable (voltage puncture) or
metallic surfaces (discharge shock hazard).

• To prevent undefined transient stress of the components and possible
damage due to inadmissible voltages or compensation currents, electri­cal connections should only be established or separated when the
equipment is switched off and after any capacitor charges have decayed.

Removal of housing parts, shields, etc. exposes energized parts. For this
reason the following precautions must be observed:

• Maintenance may only be performed by trained personnel in accordance
with the applicable regulations.

• The equipment must be switched off and disconnected from the AC
power outlet before any housing parts are removed.

• Even if the equipment is disconnected from the power outlet, parts with
hazardous charges (e.g. capacitors, picture tubes) must not be touched
until they have been properly discharged. Do not touch hot components
(power semiconductors, heat sinks, etc.) before they have cooled off.

• If maintenance is performed on a unit that is opened and switched on, no
un-insulated circuit components and metallic semiconductor housings
must be touched, neither with your bare hands nor with un-insulated
tools.

Certain components pose additional hazards:

• Explosion hazard from lithium batteries, electrolytic capacitors and
power semiconductors (watch the component’s polarity. Do not short
battery terminals. Replace batteries only by the same type).

• Implosion hazard from evacuated display units.

• Radiation hazard from laser units (non-ionizing), picture tubes (ioniz­ing).

• Caustic effect of display units (LCD) and components containing liquid
electrolyte.

Such components should only be handled by trained personnel who are
properly protected (e.g. safety goggles, gloves).

Date printed: 26.04.04 V

Repair/Disposal

E1 SMD Components

Studer does not keep any commercially available SMD components in
stock. For repair the corresponding devices should be purchased locally.
The specifications of special components can be found in the service man­ual.
SMD components should only be replaced by skilled specialists using ap­propriate tools. No warranty claims will be accepted for circuit boards that
have been damaged. Proper and improper SMD soldering joints are illus­trated below.

Copper

Track

Dismounting

Soldering

Iron

Mounting

1

Solder

2

Ø 0.5...0.8 mm

SMD

Component

Solder

Adhesive

Desoldering

Iron

Desolder

Wick

3

Heating Time < 3 s per Side

PCB

1

Soldering Iron

32

Desolder

Wick

Heat and Remove Cleaning

Examples

F Disposal

Disposal of Packing Materials The packing materials have been selected with environmental and disposal

issues in mind. All packing material can be recycled. Recycling packing
saves raw materials and reduces the volume of waste.
If you need to dispose of the transport packing materials, please try to use
recyclable means.

Disposal of Used Equipment Used equipment contains valuable raw materials as well as materials that

must be disposed of professionally. Please return your used equipment via
an authorized specialist dealer or via the public waste disposal system, en­suring any material that can be recycled is.
Please take care that your used equipment cannot be abused. To avoid
abuse, delete sensitive data from any data storage media. After having dis­connected your used equipment from the mains supply, make sure that the
mains connector and the mains cable are made useless.

VI Date printed: 26.04.04

G Declarations of Conformity

G1 Class A Equipment - FCC Notice

This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide a reasonable protection against harmful interfer­ence when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference, in
which case the user will be required to correct the interference at his own
expense.

Caution: Any changes or modifications not expressly approved by the manufacturer

could void the user's authority to operate the equipment. Also refer to rele­vant information in this manual.

Conformity

G2 CE Declaration of Conformity

We,

Studer Professional Audio GmbH,
CH-8105 Regensdorf,

declare under our sole responsibility that the product

Studer OnAir 2000M2 Modulo, Digital Mixing System
(starting with serial no. 1001)

to which this declaration relates, according to following regulations of EU
directives and amendments

• Low Voltage (LVD):
73/23/EEC + 93/68/EEC

• Electromagnetic Compatibility (EMC):
89/336/EEC + 92/31/EEC + 93/68/EEC

is in conformity with the following standards or other normative docu­ments:

• Safety:
EN 60950:2000 (Class I equipment)

• Safety of laser products:
EN 60825-1:1994 + A11 + A2, EN60825-2:2000

• EMC:
EN 55103-1/-2:1996, electromagnetic environments E2 and E4.

Regensdorf, November 5, 2002

B. Hochstrasser, President P. Fiala, Manager QA

Date printed: 26.04.04 VII

Appendix

Appendix 1: Air Temperature and Humidity

General

Normal operation of the unit or system is warranted under the following
ambient conditions defined by EN 60721-3-3, set IE32, value 3K3.
This standard consists of an extensive catalogue of parameters, the most
important of which are: ambient temperature +5...+40 °C, relative humidity

5...85% (i.e., no formation of condensation or ice); absolute humidity

1...25 g/m³; rate of temperature change < 0.5 °C/min. These parameters are
dealt with in the following paragraphs.
Under these conditions the unit or system starts and works without any
problem. Beyond these specifications, possible problems are described in
the following paragraphs.

Ambient Temperature

Units and systems by Studer are generally designed for an ambient tem­perature range (i.e. temperature of the incoming air) of +5...+40 °C. When
rack mounting the units, the intended air flow and herewith adequate cool­ing must be provided. The following facts must be considered:

• The admissible ambient temperature range for operation of the semi­conductor components is 0 °C to +70 °C (commercial temperature range
for operation).

• The air flow through the installation must provide that the outgoing air
is always cooler than 70 °C.

• Average heat increase of the cooling air shall be 20 K, allowing for an
additional maximum 10 K increase at the hot components.

• In order to dissipate 1 kW with this admissible average heat increase, an
air flow of 2.65 m³/min is required.

Example: A rack dissipating P = 800 W requires an air flow of 0.8 * 2.65 m³/min

which corresponds to 2.12 m³/min.

• If the cooling function of the installation must be monitored (e.g. for fan
failure or illumination with spot lamps), the outgoing air temperature
must be measured directly above the modules at several places within
the rack. The trigger temperature of the sensors should be 65 to 70 °C.

Frost and Dew

The unsealed system parts (connector areas and semiconductor pins) allow
for a minute formation of ice or frost. However, formation of dew visible
with the naked eye will already lead to malfunctions. In practice, reliable
operation can be expected in a temperature range above –15 °C, if the fol­lowing general rule is considered for putting the cold system into opera­tion:
If the air within the system is cooled down, the relative humidity rises. If it
reaches 100%, condensation will arise, usually in the boundary layer be­tween the air and a cooler surface, together with formation of ice or dew at
sensitive areas of the system (contacts, IC pins, etc.). Once internal con­densation occurs, trouble-free operation cannot be guaranteed, independent
of temperature.

VIII Date printed: 26.04.04