Sennheiser MO 2000 Set User manual

MO 2000 Set

Instruction manual

LEVEL

OVERLOAD

20 +/- 15dB

GAIN

Contents

Safety instructions..................................................................................................... 2

MO 2000 Set................................................................................................................ 4

Delivery includes .................................................................................................. 5

Product overview MO 2000 Set ............................................................................... 6

Putting the system into operation ......................................................................... 7

Fitting the device feet ........................................................................................ 7

Setting up the device .......................................................................................... 7

Rack mounting ..................................................................................................... 7

Connecting the mains unit ................................................................................ 8

Connecting the amplifier ................................................................................... 8

Connecting the optical microphone ................................................................ 9

Switching the central unit on/off .................................................................... 9

Adjusting the sensitivity ................................................................................... 9

Overload indication ............................................................................................. 9

Care and maintenance............................................................................................. 10

Accessories................................................................................................................. 10

Specifications ............................................................................................................ 11

Connector assignment ......................................................................................12

Frequency response curve ...............................................................................12

Manufacturer Declarations ..................................................................................... 13

Safety instructions

This instruction manual contains important safety information.

Read this instruction manual.

Keep this instruction manual in a safe place. Always include this instruction

manual when passing the system on to third parties.

Heed all warnings.

Follow all instructions.

WARNING: To reduce the risk of fire or electric shock, do not expose the device

and the mains unit to rain or moisture.

Disconnect the mains connector from the wall socket to completely discon-

nect the device from the mains during lightning storms or when unused for

long periods of time.

Use only the supplied mains unit.

Ensure that the mains unit is:

– always readily operable and easily accessible,

– properly plugged into the wall socket,

– only operated within the permissible temperature range (see “Specifi-

cations” on page 11)

– not covered or exposed to direct sunlight for longer periods of time in

order to prevent heat accumulation.

Use of the MO 2000 CU central unit

The MO 2000 CU central unit has been designed for use with the MO 2000 H

optical microphone.

Rack mounting

When installing the device in a closed or multi-rack assembly, please consider

that, during operation, the ambient temperature within the rack may signi-

ficantly rise above room temperature. However, the ambient temperature

within the rack must not exceed the temperature limit specified in the speci-

fications.

When installing the device in a rack, take good care not to affect the ventila-

tion required for safe operation or provide additional ventilation.

Make sure the mechanical loading of the rack is even to avoid a hazardous

condition such as a severely unbalanced rack.

When installing the device in a closed or multi-rack assembly, please note

that intrinsically harmless leakage currents of the individual devices may

accumulate, thereby exceeding the allowable limit value. As a remedy,

ground the rack via an additional ground connection.

TÜV 07 ATEX 553824

OPTICAL MIC CENTRE UNIT

II (2) G [Ex op is T6 Gb] IIC

II (2) D [Ex op is Db]

Operation

This device must be operated only from the type of power supply indicated

on the type plate. Observe correct polarity!

Never push objects of any kind through openings of this device as they may

touch dangerous voltage points or short-out parts that could result in fire or

electric shock.

Ensure sufficient ventilation. Do not block any ventilation openings. Install in

accordance with the manufacturer’s instructions.

Do not install near any heat sources such as central heating radiators, electric

heaters, stoves, or other devices that produce heat (e.g. amplifiers). Keep the

device away from direct sunlight and similar sources of heat.

Only use attachments/accessories specified by Sennheiser.

Use the device in dry rooms only. Do not expose the device to dripping or

splashing and ensure that no objects filled with liquids, such as vases or

coffee cups, are placed on the device. Do not use the device near water or

liquids.

Should a spillage occur, unplug the device and have it checked by a techni-

cian.

Service

No user serviceable parts inside! Do not attempt to service devices yourself as

opening or removing covers may expose dangerous voltage or other hazards.

If devices are opened by customers in breach of this instruction, the warranty

becomes null and void.

Refer all servicing to qualified service personnel. Servicing is required if a

device has been damaged in any way, such as mains cable or plug damage,

liquid has been spilled, objects have fallen inside, the device has been

exposed to rain or moisture, does not operate properly or has been dropped.

Intended use of the device

“Intended use” means that the device should be used within the operating

conditions and limitations described in this instruction manual. “Improper

use” means using the device other than as described in this instruction

manual, or under operating conditions which differ from those described

herein.

MO 2000 Set

The MO 2000 Set optical microphone system consists of the following main

components:

yMO 2000 H optical microphone

yMO 2000 CU central unit

The MO 2000 H optical microphone consists of an opto-acoustic microphone

head which is fitted with a fixed 3 m double fiber optic cable. The fiber optic

cable is connected to the MO 2000 CU central unit. Power is supplied via an

external wide voltage range power supply unit.

The MO 2000 H is an omni-directional microphone designed for picking up air-

borne sound. The components of the MO 2000 H microphone head (outside

dimensions: 1/2 inch) are made of plastic suitable for permanent stationary

use in areas where aggressive substances (gases, salts, moisture) or radia-

tion are present. All components of the MO 2000 H microphone head are

metal-free, including the fiber optic cable feed.

The main areas of application of the optical microphone are acoustic mea-

surement and communication tasks in industrial environments and EMC-sen-

sitive areas as well as medical magnetic resonance imaging and magneto-

encephalographic measurement (MEG). Other applications are to be found in

the field of non-detectable acoustic surveillance.

Delivery includes

y1 MO 2000 H optical microphone with 3 m fiber optic cable

y1 MO 2000 CU central unit

y1 mains unit with different country adapters

y1 carrying case

y1 instruction manual

LEVEL

OVERLOAD

20 +/- 15dB

GAIN

Fiber optic

cable

Mains unit

MO 2000 CU

Optical microphone

Product overview MO 2000 Set

Gain switch (coarse adjustment)

Level control (fine adjustment), with 0 dB mark

OVERLOAD LED

ON/OFF button

Cable grip for power supply DC cable

DC socket for connection of power supply unit (DC IN)

Audio output (AF OUT BAL), XLR-3M, balanced

Audio output (AF OUT UNBAL), BNC socket, unbalanced

Type plate

SC duplex optical connection for microphone

Optical microphone

SC duplex connector

Mains unit

US adapter

UK adapter

EU adapter (preassembled)

LEVEL

OVERLOAD

20 +/- 15dB

GAIN

OPTICAL MIC

INPUT

AF OUT

BAL/UNBAL

DC IN

12V/150mA LEV 6dBu MAX

쐋

     











Putting the system into operation

Fitting the device feet

You can set up the device on an even surface or mount it into a 19” rack.

Note:

Do not fit the rubber feet when rack mounting the device.

Setting up the device

To ensure that the device cannot slip on the surface on which it is placed, fix

the supplied four self-adhesive soft rubber feet to the base of the device.

왘Ensure that the base of the device is clean and free from grease before fit-

ting the rubber feet.

왘Fix the rubber feet to the base of the device by peeling off the backing

paper and fitting them as shown.

Rack mounting

For mounting two central units into a 19” rack, you require the GA 2 rack

adapter. The GA 2 rack adapter consists of:

y1 blanking plate 

y2 rack mount “ears” 

y1 jointing plate 

y2 blanking plugs  for closing off unused BNC holes

y12 recessed head screws M 3x6

y2 recessed head screws M 6x10

Risk of staining of furniture surfaces!

Some furniture surfaces have been treated with varnish, polish

or synthetics which might cause stains when they come into

contact with other synthetics. Despite a thorough testing of

the synthetics used by us, we cannot rule out the possibility of

staining.

왘Do not place the central unit on delicate furniture surfaces.

CAUTION!

Danger of heat damage!

When installing the device in a closed or multi-rack assembly,

please consider that, during operation, the temperature within

the rack may rise significantly.

왘Make sure not to affect the ventilation required for safe

operation or provide additional ventilation.

Danger of electric shock!

When installing the device in a closed or multi-rack assembly,

please note that intrinsically harmless leakage currents of the

individual devices may accumulate, thereby exceeding the

allowable limit value.

왘Ground the rack via an additional ground connection.

CAUTION!





To mount two central units into a rack:

왘Place the two central units side by side upside-down onto a flat surface.

왘Align the jointing plate  over the holes in the bottom sides of the central

units.

왘Secure the jointing plate  to the central units using eight of the supplied

recessed head screws (M 3x6).

왘Hook the two rack mount “ears”  to the front panels of the central units.

왘Secure the rack mount “ears” to the central units using two of the sup-

plied recessed head screws (M 3x6) respectively.

왘Slide the central units into the 19” rack.

왘Secure the rack mount “ears” to the rack.

To mount only one central unit into a rack:

왘Hook the two rack mount “ears”  to the front panel of the central unit.

왘Secure the rack mount “ears” to the central unit using two of the supplied

recessed head screws (M 3x6) respectively.

왘Secure the blanking plate to one of the rack mount “ears” using two

of the supplied recessed head screws (M 6x10).

왘If you are not front mounting the BNC output connector, insert the two

blanking plugs into the holes of the blanking plate.

왘Slide the central unit into the 19” rack.

왘Secure the rack mount “ears” to the rack.

Connecting the mains unit

왘Connect the supplied mains unit to the socket  (DC IN). Use the cable

grip to secure the power supply DC cable.

왘Connect the suitable adapter to the mains unit .

왘Connect the mains unit to the mains.

The device switches on automatically.

Connecting the amplifier

The audio outputs are available as a balanced XLR-3M output  and an

unbalanced BNC output , allowing you to simultaneously connect two

devices (amplifier, etc.). Both outputs deliver the same output voltage, are

short-circuit proof and decoupled from each other.

왘Connect the amplifier/mixing console to the balanced XLR-3M output 

or the unbalanced BNC output .

For details on balanced or unbalanced connection, see “Connector assign-

ment” on page 12.









AF OUT

BAL/UNBAL

DC IN

12V/150mA LEV 6dBu MAX

 

AF OUT

BAL/UNBAL

DC IN

12V/150mA LEV 6dBu MAX

 

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