Sennheiser AC 3000 Bedienungsanleitung

Bedienungsanleitung

Instructions for use

Notice d‘emploi

Istruzioni per l‘uso

Instrucciones para el uso

Gebruiksaanwijzing

AC 3000

Active Transmitter Combiner 8:1

AC3000_093908_0406_Sp6.book Seite 1 Donnerstag, 6. April 2006 1:59 13

AC3000_093908_0406_Sp6.book Seite 2 Donnerstag, 6. April 2006 1:59 13

Instructions for use

AC 3000

Active Transmitter Combiner 8:1

AC3000_093908_0406_Sp6.book Seite 1 Donnerstag, 6. April 2006 1:59 13

Contents

Brief description .................................................................... 2

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

Delivery includes ................................................................... 4

Operating elements .............................................................. 4

Connection diagram ............................................................. 5

Putting the unit into operation .......................................... 5

Operation ................................................................................ 7

Troubleshooting .................................................................... 7

Accessories ............................................................................. 8

Specifications ......................................................................... 8

Manufacturer declarations .................................................. 9

Brief description

With the AC 3000 8-to-1 active transmitter combiner, the signals

of up to eight SR 3054 transmitters or up to four SR 3056 twin

transmitters can be combined onto a single antenna (A 2003 UHF

directional antenna or A 1031 U omni-directional antenna).

The active transmitter combiner allows you to make high-

quality transmission systems with up to 8 channels.

Areas of application:

Multi-channel in-ear monitoring system for broadcast or stage use

Multi-channel system suitable for any application where talk-back

signals are to be transmitted (e.g. studio)

Safety instructions

Danger!

Overheating or overvoltages (caused by lightning striking the

mains supply etc.) can cause units with a mains connection to

catch fire!

Always set up the unit in a well-ventilated place! Make sure that

the air vents of the unit are not covered or blocked! Never stack

more than two units directly one above the other! Do not set up

the unit near any heat sources and never expose the unit to

AC3000_093908_0406_Sp6.book Seite 2 Donnerstag, 6. April 2006 1:59 13

direct sunlight (see page 15)! Use an overvoltage protection

or, during a thunderstorm, disconnect the unit from the mains!

Warning!

If you open units or use damaged mains cables, you can

receive a dangerous electric shock!

Never open the unit and only use undamaged mains cables!

If a unit should be defective, repair must be carried out by

authorized personnel! If units are opened by you in breach

of this instruction, the warranty becomes null and void.

Warning!

If units and cables are set up improperly, persons can be

injured or units can be damaged!

Set up the unit on an even surface or mount it into a rack!

Lay the cables in such a way that no-one can stumble over

them!

Attention!

If liquids or small parts which conduct electricity find their

way into the interior or to the sockets of the unit, this can

cause a short-circuit which may damage the unit!

Keep liquids and small parts which conduct electricity away

from the unit! Use a damp cloth for cleaning the unit. Do not

use any solvents or cleansing agents!

Attention!

The AC 3000 contains mechanically moving parts (fans).

Since dust and pollution can impair their function, you should

regularly check the fans for proper operation and clean out

any dust if necessary. The failure of one or several fans can

cause overheating and permanent damage to the unit.

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Delivery includes

y1 active transmitter combiner 8:1

y1 mains cable

y1 rack-mounting kit

y4 set of self-adhesive plastic feet

y1 instruction manual

You additionally require BNC cables for connecting the

transmitters and the antenna to the AC 3000, an antenna

(A 2003 UHF passive directional antenna or A 1031 U pas-

sive omni-directional antenna) and up to eight SR 3054

transmitters or up to four SR 3056 twin transmitters.

Unused inputs do not require a terminating resistor.

Operating elements

POWER LED

POWER (ON/OFF) switch

8 RF inputs RF IN 1 to RF IN 8 for connecting the

transmitters

3 low-noise fans

BNC socket for antenna output ANT

IEC mains socket

8 LEDs for RF signal indication

   

 





AC3000_093908_0406_Sp6.book Seite 4 Donnerstag, 6. April 2006 1:59 13

Connection diagram

The below connection diagram shows the connections for

an 8-channel system.

Putting the unit into operation

Setting up the unit

왘Set up the AC 3000 on an even, horizontal surface so that

it cannot fall over or mount it into a 19" rack.

Warning!

During operation, the AC 3000 and the connected

transmitters produce considerable waste heat! Make

sure that the air vents of the units are not covered or

blocked and provide for a duct of sufficient size to ensure

a free air flow between the units – especially when

mounting several transmitter combiners or transmitters

into a desk, chassis or rack! Never stack more than two

units directly one above the other!

ANT

8:1

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Connecting the antenna

The AC 3000 active transmitter combiner can be used with

either the A 2003 UHF directional antenna or the A 1031 U

omni-directional antenna. The antenna transmits the sig-

nals of all connected transmitters. The signals are combined

onto the antenna output with no distribution attenuation.

왘Connect the antenna to the antenna output ANT .

Note:

Each AC 3000 requires its own antenna! Several

AC 3000s cannot be daisy-chained!

Connecting the transmitters

You can connect up to eight SR 3054 transmitters or up to

four SR 3056 twin transmitters to the AC 3000.

왘Use 50-Ohm BNC cables to connect the transmitters to

the RF inputs RF IN 1 to RF IN 8 .

Connecting the mains cable

왘Connect the mains cable to the IEC mains socket  and

to the mains.

Note:

The AC 3000 can be connected to any mains power

supply with 100 V to 240 V AC (50 to 60 Hz).



 





AC3000_093908_0406_Sp6.book Seite 6 Donnerstag, 6. April 2006 1:59 13

Operation

Turning the AC 3000 on and off

왘To turn the AC 3000 on, press the POWER (ON/OFF)

switch .

The POWER LED lights up red.

왘To turn the AC 3000 off, press the POWER (ON/OFF)

switch  once more. The POWER LED goes off.

RF signal indication

왘The AC 3000 features eight control LEDs  which will

light up if an input signal is present at the corresponding

input.

Troubleshooting

One or several LEDs for input signal indication do not

light up

왘Check if transmitters are connected to the corresponding

inputs.

왘Check if the corresponding transmitters are turned on.

Disturbed reception or no reception

Possible causes:

yTransmitting antennas are not within the reception area

yTransmitters or receivers are not turned on

yBatteries are not inserted into the receiver or batteries

are low

yThe antennas are not connected correctly

yThe connecting cables are defective

yToo high cable attenuation due to too long antenna

cables or wrong type of antenna cable

yThe selected transmission and receiving frequencies are

not within the frequency window

yThe frequencies are not intermodulation-free





AC3000_093908_0406_Sp6.book Seite 7 Donnerstag, 6. April 2006 1:59 13

Accessories

The following accessories are available from Sennheiser:

A 2003 UHF Passive directional antenna Cat. No. 03658

A 1031 U Passive omni-directional antenna

Cat. No. 04645

GZL 1019 A1 BNC-BNC coaxial cable, length 1 m

Cat. No. 02324

GZL 1019 A5 BNC-BNC coaxial cable, length 5 m

Cat. No. 02325

GZL 1019 A10 BNC-BNC coaxial cable, length 10 m

Cat. No. 023266

Specifications

Antenna combiner 8-to-1

Frequency range 470 – 870 MHz

Distribution attenuation 0 dB (±1 dB)

RF input power max. 100 mW per input

Impedance 50 Ω

Power supply 100 V – 240 V AC, 50 – 60 Hz

Current consumption max. 120 VA

Temperature range –10 °C to +55°C

Weight 3 kg

AC3000_093908_0406_Sp6.book Seite 8 Donnerstag, 6. April 2006 1:59 13

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