Sennheiser WIRELESS DIGITAL User manual

WIRELESS DIGITAL

INSTRUCTION MANUAL

NOTICE D‘EMPLOI

INSTRUCCIONES PARA EL USO

INSTRUCTION MANUAL........................................................................................... 3

NOTICE D‘EMPLOI ................................................................................................... 19

INSTRUCCIONES PARA EL USO ............................................................................ 35

WIRELESS DIGITAL

INSTRUCTION MANUAL

1 Contents

Chap. Contents ............................................................................................... Page

1 Contents ..........................................................................................4

2 Features ............................................................................................5

3 Important notes ............................................................................... 6

4 System variants ............................................................................... 6

5 Preparing the devices for use .........................................................7

5.1 EM 1090 DIGITAL receiver ................................................. 7

5.2 SK 1093 DIGITAL belt pack transmitter ........................... 10

5.3 SKM 1091 DIGITAL handheld transmitter .......................12

6 Troubleshooting ............................................................................14

7 Installation in a 19" rack...............................................................14

8 Care and maintenance ..................................................................15

9 Connector assignment ..................................................................15

10 Technical data................................................................................16

11 Accessories .................................................................................... 17

Congratulations

on your purchase of the Sennheiser Digital Wireless System. This is a state-

of-the-art 900 MHz (UHF) digital audio transmission system and is capable

of outstanding audio and RF performance in combination with high-grade

amplification, mixing and recording systems.

Sennheiser proudly presents this advanced new standard in audio

transmission to musical and audio professionals as proof of Sennheiser’s

non-compromising pursuit of the ultimate in RF and audio performance.

Your digital wireless system is designed for superb audio quality and wireless

performance as well as continued reliability. To familiarize you with your

new digital wireless system, we suggest that you read through this entire

operation manual.

2 Features

• 16-bit A/D–D/A conversion for CD quality sound.

• No compander ICs – for the transient response and “feel” of

a wired connection.

• Frequency Clear™ UHF Digital: System transmits a

proprietary digital signal on a 900 MHz UHF carrier for

freedom from multi-pathing and interference, including

HDTV.

• Quadiversity™ receiver – one UHF receiver, four internal

antennas, all microprocessor-controlled for freedom from

dropouts.

• Scanner-proof security: Proprietary digital transmission is

scanner-proof for eavesdrop-free peace of mind.

• Operating range of 80 – 130 feet under adverse conditions,

280 feet line of sight.

• Nine-segment LED display shows important performance

parameters including audio level and transmitter battery life.

This device complies with part 15 of the FCC rules. Operation is subject to

the following two conditions:

1 This device may not cause harmful interference, and

2 this device must accept any interference that may cause

undesired operation.

3 Important notes

Never open electronic devices! This must only be done by authorized

personnel, especially for units connected to AC outlets. If devices are opened

by customers in breach of this instruction, the warranty becomes null and void.

Always disconnect the devices from the mains by removing the plug when

you wish to change connections or move the devices to a different place.

Never connect conventional RF antennas to the BNC sockets as these can

damage the receiver!

Keep the devices away from central heating radiators and electric heaters.

Never expose them to direct sunlight.

Use the devices in dry rooms only.

Use a damp cloth for cleaning the devices. Do not use any cleansing agents

or solvents.

4 System variants

Vocal Set 1091 DIGITAL

This system is ideal for vocal applications.

Set 1091 DIGITAL consists of: EM 1090 DIGITAL receiver, SKM 1091

DIGITAL handheld transmitter with supercardioid dynamic microphone

module, microphone clamp, plug-in mains unit, battery and operating manual.

Instrumental Set 1092 DIGITAL

This system is for connecting musical instruments (e.g. guitar) which have a

1/4” jack socket.

Set 1092 DIGITAL consists of: EM 1090 DIGITAL receiver, SK 1093

DIGITAL belt pack transmitter, instrument (guitar) cable, plug-in mains unit,

battery and operating manual.

Bodypack Set 1093 DIGITAL

This system is ideal for presentation and PA applications in acoustically

difficult rooms. The unobtrusive clip-on electret microphone (omnidirectional)

can be directed towards the speaker’s mouth.

Set 1093 DIGITAL consists of: EM 1090 DIGITAL receiver, SK 1093

DIGITAL belt pack transmitter, miniature clip-on electret microphone

(omnidirectional), plug-in mains unit, battery and operating manual.

 

  

POWER button

“Power on/off” control LED

“RF” control LED

“Data” control LED

6-segment level display for

- incoming AF signal

- transmitter battery life

Channel selector switch

BNC socket 1 for connection of additional A 1090 DIGITAL antenna

AF output, unbalanced, 1/4” jack (line level)

AF output, balanced, XLR-3M

AF output level control (for outputs and )

Cable grip for power supply DC cable

DC socket for connection of mains unit

BNC socket 2 for connection of additional A 1090 DIGITAL antenna

5 Preparing the devices for use

5.1 EM 1090 DIGITAL receiver











Connecting the mains unit

씰Insert the DC connector on the power supply output cable into

socket (refer to page 7) at the rear of the receiver.

씰Pass the cable through the cable grip .

Connecting the amplifier/mixing console

씰Connect the amplifier/mixing console either

– to the XLR-3M socket or

– to the 1/4” jack socket .

Adjusting the AF output level

씰Use the AF output level control to adjust the AF signal level that

appears at outputs and .

Switching the receiver on/off – Selecting a channel

씰Press the POWER button to switch the receiver on.

씰Use the channel selector switch to select a channel.

Connecting additional A 1090 DIGITAL antennas

Additional digital antennas can be connected to the BNC sockets and 

if the range of the receiver’s internal antennas is not sufficient. This may

happen if receivers are mounted into a rack or are installed between metal

constructions on a stage.

For connecting the antennas, use 50 Ωcoaxial cable with BNC connectors.

Ready made up antenna cables from Sennheiser are available as accessories

(see chapter 11).

Depending on the location you can connect one or two digital antennas.

Attention:

Never connect conventional RF antennas to the BNC sockets as these

can damage the receiver!









Indicators on the EM 1090 DIGITAL receiver

The 3-segment LED display on the left of the front panel provides information

on the operating state of the EM 1090 DIGITAL receiver:

Red LED “ON”:

The LED  lights up to show that the receiver is connected to the mains

and has been switched on with the POWER button .

Red LED “RF”:

An RF signal from the suitable transmitter is being received by the receiver.

In contrast to analog transmission, digital test signals are also received so

that the transmitter can be identified.

Red LED “DATA”:

After the receiver has checked the suitable transmitter and accepted the digi-

tal transmission, the LED indicates that a data stream is being received.

“AF LEVEL” indication

The 6-segment LED display on the right of the front panel indicates the AF

level, i.e. the incoming audio signal. The segments of the LED display start

lighting up from the left.

Adjust the sensitivity of the SK 1093 DIGITAL belt pack transmitter such

that the last (right-hand) LED segment does not light up. The sensitivity of

the SKM 1091 DIGITAL handheld transmitter is automatically adjusted.

“BATTERY” indication

As long as the transmitter doesn’t transmit any audio signal (e.g. during

pauses in speaking), the 6-segment LED display indicates the remaining

transmitter battery capacity. The segments of the LED display start lighting

up from the right.

If the battery is going flat, the last (left-hand) LED segment will light up. You

should replace the battery within the next 20 minutes (value depending on

battery type).





5.2 SK 1093 DIGITAL belt pack transmitter

Antenna

Operation indicator (green LED)

Battery life indicator (red LED)

AF input (MIC/LINE), 1/8” jack socket

Mute switch

HIGH/LOW dynamic window switch

ON/OFF switch

Control for precise sensitivity adjustment

Channel selector switch

Cover plate

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