DRAKE AUDIOACCENT Руководство по эксплуатации - Страница 11

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3. Connect the Transmitter to Power

Plug the DC power cord of the supplied AC Adapter into

the DC INPUT connector on the rear panel of the

ALT 1000 unit. Secure the DC power cord with the

adjacently located strain relief. Plug the AC Adapter

into a nominal 120 VAC, 60 Hz wall outlet. Set the rear

panel POWER switch to the 'ON' position. The front

panel display should now indicate the operating

frequency and mode.

4. Set the Operating Frequency and Mode

Determine a frequency in the range of 72.1 - 72.9 MHz,

74.7 MHz, or 75.3 - 75.9 MHz that is not active in your

area. Use one of the supplied MR306 receivers to

monitor the intended frequency. Press the front panel

button(s) of the ALT 1000 to set the operating

frequency. A receiver set to the same operating

frequency should become quiet.

Locating the Optional Magnetic-Mount Antenna

The optional magnetic-mount antenna is intended for

use with rack-mounted transmitters or in installation

areas where a remote antenna is needed for maximum

operating distance. For maximum signal strength, it is

best to locate the antenna somewhere within the

listening area. Generally, the higher the antenna can

be mounted above the listening area, the better.

Per FCC rules, only antennas supplied by the

R.L. Drake Company may be used with this transmitter.

Strain Relief

The mating connector on the coaxial cable

feed for the antenna tightens in a

COUNTERclockwise direction.

M A D 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 N

O F F

1 2 V D C

2 5 0 m A

Installation, continued

M A D 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 N

O F F

1 2 V D C

2 5 0 m A

Switch to 'ON'

If a monaural audio source is being supplied to the

ALT 1000, set the displayed mode to 'MONO'. Set for

'STEREO' with stereo audio source material. To set the

mode, press and hold both TUNE

mode 'MONO' or 'STEREO' flashes. Press either

TUNE

button to set the required mode.

LEVEL

OVER MODULATION

MONITOR OUTPUT

MONITOR

INPUT

RIGHT

LEFT

5. Set the INPUT and MONITOR Level Controls

With the audio source active, and the desired type of

limiting set, adjust the INPUT LEVEL control clockwise

until the (OVER) MODULATION LED indicators just

begin to light on audio signal peaks. Refer to the "Rear

Panel Controls and Connections" (Item 4) and the

"Front Panel Controls and Indicators" (Items 3,4)

sections of this manual for details. To monitor the audio

source material, plug a set of headphones into the

MONITOR OUTPUT jack. Adjust the MONITOR Level

control for a comfortable listening level.

Installing the Remote Antenna

1. Remove the "rubber duck" antenna from the

ALT 1000 by turning it counterclockwise and guiding it

through the top cover.

2. Attach the optional antenna to the rear panel 'RF

OUTPUT - EXT ANTENNA' connector. CAUTION: This

connector is a left-hand thread type. The mating

connector on the coaxial cable feed for the antenna

tightens in a COUNTERclockwise direction.

Antenna Coax Cable

buttons until the

ALT 1000 ASSISTIVE LISTENING TRANSMITTER

TUNE

FREQUENCY

72.1 MHz Stereo

Magnetic-mount

Antenna