Sennheiser EM 1036 Instructions for Use - Page 8

Introduction

The

new

Sennheiser

multi

-channel

receiver

EM

1036

is

capable

of

meeting

all

professional

require-

ments.

The

most

outstanding

characteristics

of

this

receiver

are:

multi

-channel

capacity,

diversity

operation

without

additional

equipment

high

transmission

quality

due

to

the

"HiDyn"

noise

reduc-

tion

system,

users

orientated

design

and

capability

of

expansion

due

to

the

19"

module

technique.

The

receiver

is

available

in

the

following

versions:

EM

1036:

wideband,

frequency

range

30-45

MHz

EM

1036

R:

wideband,

freauencv

ramie

30

-45

MHz

Licensed

for

broadcasting

stations

in

the

Federal

Republic

of

Germany.

EM

1036-7:

narrowband,

frequency

range

30-45

MHz..

EM

1036-9:

narrowband,

frequency

range

138-250

MHz.

EM

1036-90:

wideband,

frequency

range

138

-250

MHz.

Brief

description

of

the

indivudual

components

Chassis

EMC

1036

The

19"

-Chassis

EMC

1036

provides

space

lor

the

monitor

unit

EMM

1036

and

6

receiver

modules

type

EME

1036.

It

contains

the

power

supply,

the

wiring

for

the

rack

connectors

to

the

seperate

modules

as

well

as

the

in-

and

output

sockets

for

the

RF

and

AF

-connections.

The

chassis

can

be

fitted

into

19"

racks.

but

it

can

also

be

used

as

a

table

top

unit

in

connection

with

the

housing

EMG

1036

or

the

EMK

1036

carrying

case.

Vacant

spaces

can

be

closed

off

with

cover

plates

EMB

1026.

Monitor

module

EMM

1036

The

monitor

module

EMM

1036

contains

a

set

of

push

buttons

with

which

the

AF

-output

signals

of

the

receiver

modules

are

selected

to

be

monitored

individually

or

as

a

sum

through

a

headphone.

Besides

the

set

of

push

-buttons

and

the

monitor

output,

there

are

on

the

front

panel

the

mains

switch

and

3

LEDs

-

two

indicating

the

switchable

supply

voltage

with

which

e.

g.

antenna

amplifiers

can

be

led

(see

also

section

"Antennas

and

RE

-connections").

The

third

shows

the

state

of

operation.

Receiver

module

EME

1036

The

module

EME

1036

is

single

-channel

to

achieve

optimum

selectivity.

The

controls

are

dearly

arranged

on

the

front

plate.

A

LED

display

shows

in

logarythmic

scale

the

RF

input

voltage

and,

optionally

by

means

of

a

push-button

switch,

the

modulation

in

percentage.

A

squelch

control,

accessible

through

an

opening

in

the

front

plate,

permits

varying

the

threshold

for

the

built-in

electronic

squelch.

Diversity

operation

of

two

adjacent

receiver

modules

(1

and

2,

3

and

4

etc.)

is

possible

without

further

diversity

equipment

by

simply

operating

a

switch.

The

transmission

reliability

available

with

diversity

operation

is

further

increased

by

the

built-in

noise

suppression

system

"HiDyn".

Variations

Receiver

module

EME

1036

Wdeband

receiver

module

for

one

frequency

in

the

range

30

-

45

MHz.

Receiver

module

EME

1036R

Wideband

receiver

module

for

one

frequency

in

the

range

32.55

-

38.05

MHz.

Receiver

module

EME

1036-7

Narrowband

receiver

module

for

one

frequency

in

the

range

30

-

45

MHz.

Receiver

module

EME

1036-9

Narrowbend

receiver

module

for

one

frequency

in

the

range

of

138

-

250

MHz

Receiver

module

EME

1036-90

Wideband

receiver

module

for

one

frequency

in

the

range

of

138

-

250

MHz.

Mechanics

The

individual

modules

are

fastened

on

the

chassis

with

quick

-release

locks.

Turning

clockwise

or

anticlockwise

by

90

°

opens

the

locking

and

the

module

can

be

removed

by

pulling

it

out

of

the

chassis,

towards

the

front.

Turning

the

feet

of

the

set

by

180

°

makes

the

EM

1036

stackable

with

other

sets.

To

do

so,

screws

A

and

B

must

be

losened,

the

feet

turned,

and

the

screws

fastened

again

(Fig.

5).

1

eB

2.

Fig.

5

Installing

the

receiver

The

receiver

chassis

can

be

fi

tted

into

19"

racks,

but

it

can

also

be

used

as

a

table

top

unit

in

con-

nection

with

the

housing

EMG

1036

or

the

EMK

1036

carrying

case.

In

any

case

one

should

make

sure

that

the

ventilation

in

the

receiver

is

not

obstructed

in

any

way.

Mains

connection

The

chassis

EMC

1036

leaves

the

factory

pre-set

for

220

V/50

-

60

Hz

operation.

If

it is

to

be

opera-

ted

on

mains

voltages

of

110V

or

240V,

this

change

-over

can

be

done

by

using

the

voltage

selec-

tor

(15),

which

is

made

accessible

by

opening

the

fl

ap

(14).

Behind

this

flap,

you

will

also find

the

fuse

holder

(t6).

Opening

the

lisp

Orange

-over

of

mains

wage

AF

-connection

The

AF

-output

signals

of

the

different

receiver

modules

are

available

at

the

outputs

(20)

floating

and

balanced,

with

a

level

of

+

6dBm

=

1.55V

(al

nominal

swing).

This

level

may,

if

necessary,

be

adjusted

to

a

value

between

OdBm

and

+

10dBm

resp.

attenuated

by

20dB

with

a

switch

(see

"Adjusting

AF

-voltages').

Since,

in

diversity

operation,

both

AE

-outputs

of

one

diversity

pair

deliver

the

same

signal,

only

one

AF-connedion

lead

per

channel

is

needed.

Connections

for

headphones

The

AF

-output

signals

of

the

individual

receiver

modules

can

be

monitored

through

headphones.

With

the

set

of

push-puttons

(8)

the

signal

of

each

receiver

module

or

the

sum

of

the

signals

of

all

receiver

modules

can

be

switched

onto

the

headphone

output

(9).

The

monitoring

volume

can

be

adjusted

with

the

volume

control

(10).

With

diversity

operation

always

the

receiver

module

of

a

diversity

pair

is

switched

onto

the

headphone

output,

which

delivers

the

best

signal

(see

Fig.

8).

Fig.

6

Igut

j

t

I]

Changing

RIG

lure

220/240

V:

0,63

AT

110V:

1.25AT

11

12

Sennheiser EM 1036 Instructions for Use - Page 8

Introduction, Variations, Mechanics, Mains, connection, connection, Connections, headphones

Page 8 highlights