DRAKE AUDIOACCENT Manuale di istruzioni - Pagina 9

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M AD E I N U. S. A.

R F O U T P U T

- E X T. A N T E N N A -

D C I N P U T

P O W E R

O F F

1 2 V DC

2 5 0 m A

1. DC INPUT - Connect the supplied AC Adapter to this

connector. Secure AC Adapter DC cable with the

adjacent rear panel strain relief.

2. POWER ON/OFF Switch - Set this switch to the 'ON'

position to operate the ALT 1000.

3. RF OUTPUT/EXTERNAL ANTENNA - Connection for

the optional magnet mount antenna only. This connec-

tor type permits fitting only the R.L. Drake Company

supplied magnet mount optional antenna.

4. LIMITING/COMPRESSION SWITCH - This switch

selects the operation of the limiter. Select the proper, or

desired, setting according to the following criteria:

"OFF" - For audio sources with limiting and/or

compression already applied. This setting bypasses the

limiting circuitry of the ALT 1000. With the audio source

connected, adjust the INPUT LEVEL control to a setting

at or just below the point where the (OVER) MODULA-

TION indicators light on audio peaks.

"L" - For most types of audio sources and listening

environments. This setting provides automatic limiting

on audio peaks to prevent loud bursts and to avoid over

modulation conditions which can cause distorted audio

at the receiver. With the audio source connected, (for

example, the output of a public address amplifier with a

person speaking at a normal level into the microphone),

adjust the INPUT LEVEL control to a setting at the point

where the (OVER) MODULATION indicators light on

audio peaks.

"C+L" - For audio sources that contain relatively low

audio levels combined with relatively high audio levels

as might be encountered when the audio output from a

public address amplifier contains audio from multiple

microphones with different persons speaking. This

setting provides automatic increasing of the low level

audio passages combined with limiting on voice peaks.

This type of audio processing can sometimes aid

intelligibility for a person receiving the signal while

located in a relatively noisy audio environment. With the

audio source connected, and the weaker audio levels

active, adjust the INPUT LEVEL control to a setting at or

just below the point where the (OVER) MODULATION

indicators light on audio peaks.

Rear Panel Controls and Connections

F C C I D : C A R 1 0 0 2 4 3 4

C A N A D A : 2 7 8 5 1 0 2 5 2 1

T H IS D EV IC E C OMPLIES WI TH FC C R U LE S P A R T 15.

LIM ITIN G /

O P ER A TIO N I S S UB JE CT TO TH E FOLLOWI NG T WO

C O MPR E SSIO N

C O N D ITION S : ( 1) TH IS D EV IC E MA Y N OT C A U SE

H A R M FU L IN TER FR EN C E A N D ( 2) TH IS D EV IC E

M U ST A C C EPT A N Y IN TE R FER E NC E THA T MA T B E

OF F

C +L

R E CE IV ED , INC LU D I NG IN TER FE R EN C E TH A T MA Y

C A U SE U N D ES IR ED OPER A TI ON .

L E F T A U D I O

I N P U T

( MO N O)

20K

U N B A L A N CE D

B A LA N C E D

16 T O

4d B u

10 T O

10d B u

5. LEFT AUDIO INPUT - Connect monaural audio input

signals to the appropriate unbalanced or balanced LEFT

AUDIO INPUT connector. For monaural input, program

the ALT 1000 to display 'MONO'. See Item 5;

'TUNE

Buttons' in the 'Front Panel Controls and

Indicators' section of this manual. For stereo input,

connect an unbalanced line level left channel stereo

audio signal to the phono connector or connect a

balanced line level left channel stereo audio signal to the

3-pin female XLR connector. The unbalanced phono

style input and the XLR balanced input on a given input

(Left or Right) are each always active, so audio will be

fed from whichever input is being used. Do not attempt

to connect signals to both the unbalanced and

balanced connectors on a given input (Left or Right).

All inputs can be considered high impedance (>20K

Ohm). The shield connection at pin 1 of the XLR

connector can be conveniently connected to ground

(GROUND LIFT = 'OFF') or lifted from ground (GROUND

LIFT = 'ON') to eliminate hum or noise as required. For

stereo input, program the ALT 1000 to display

'STEREO'. See 'Front Panel Controls and Indicators:

See Item 5; 'TUNE

Buttons' in the 'Front Panel

Controls and Indicators' section of this manual.

6. GROUND LIFT Switch - Set to the 'OFF' position to

connect pin 1 of both LEFT and RIGHT XLR connectors

to ground. Set to the 'ON' position to disconnect both

XLR connectors from ground.

7. RIGHT AUDIO INPUT - For stereo input, connect an

unbalanced line level right channel stereo audio signal to

the phono connector or connect a balanced line level

right channel stereo audio signal to the 3-pin female XLR

connector. Never connect signals to both the

unbalanced and balanced connectors on a given input

(Left or Right).

The shield connection at pin 1 of the

XLR connector can be conveniently connected to ground

(GROUND LIFT = 'OFF') or lifted from ground (GROUND

LIFT = 'ON') to eliminate hum or noise as required. For

stereo input, program the ALT 1000 to display

'STEREO'. See Item 5; 'TUNE

'Front Panel Controls and Indicators' section of this

manual. Connect a monaural audio signal to the

appropriate LEFT AUDIO INPUT connector. See Item 5:

'LEFT AUDIO INPUT', on this page.

G N D

R I G H T A U D I O

H IG H

I N P U T

L OW

G R O U N D

L I F T

20K

B A LA N C E D

U NB A L ANCE D

O FF

10 TO

10dB u

16 T O

4d Bu

Buttons' in the