DRAKE ALT72 Instruction Manual Download Page 3

Important Safety Instructions     iii

1. Read Instructions—All the safety and operating instructions should be read
before the product is operated.
2. Retain Instructions—The safety and operating instructions should be
retained for future reference.
3. Heed Warnings—All warnings on the product and in the operating
instructions should be adhered to.
4. Follow Instructions—All operating and use instructions should be followed.
5. Cleaning—Unplug this product from the wall outlet before cleaning.  Do not
use liquid cleaners or aerosol cleansers.  Use a damp cloth for cleaning.
6. Attachments—Do not use attachments that are not recommended by the
product manufacturer as they may cause hazards.
7. Water and Moisture—Do not use this product near water—for example,
near a bathtub, wash bowl, kitchen sink or laundry tub; in a wet basement;
or near a swimming pool; and the like.
8. Accessories—Do not place this product on an unstable cart, stand, tripod,
bracket, or table.  The product may fall, causing serious injury to a child or adult,
and serious damage to the product. Use only with a cart, stand, tripod, bracket,
or table recommended by the manufacturer, or sold with the product. Any
mounting of the product should follow the manufacturer's instructions, and
should use a mounting accessory recommended by the manufacturer.
9. A product and cart combination should be moved with care. Quick stops,
excessive force, and uneven surfaces may cause the product and cart
combination to overturn.
10. Ventilation—Slots and openings in the cabinet are provided for ventilation
and to ensure reliable operation of the product and to protect it from
overheating, and these openings must not be blocked or covered.  The
openings should never be blocked by placing the product on a bed, sofa, rug,
or similar surface. This product should not be placed in a built-in installation
such as bookcase or rack unless proper ventilation is provided or the
manufacturer's instructions have been adhered to.
11. Power Sources—This product should be operated only from the type of
power source indicated on the marking label.  If you are not sure of the type of
power supplied to your home, consult your product dealer or local power
company. For products intended to operate from battery power, or other
sources, refer to the operating instructions.
12. Grounding or Polarization—This product may be equipped with a
polarized alternating-current line plug (a plug having one blade wider than the
other). This plug will fit into the power outlet only one way. This is a safety
feature. If you are unable to insert the plug fully into the outlet, try reversing
the plug. If the plug should still fail to fit, contact your electrician to replace
your obsolete outlet. Do not defeat the safety purpose of the polarized plug.
Alternate Warnings—If this product is equipped with a three-wire grounding-
type plug, a plug having a third (grounding) pin, the plug will only fit into a
grounding-type power outlet. This is a safety feature. If you are unable to insert
the plug into the outlet, contact your electrician to replace your obsolete outlet.
Do not defeat the safety purpose of the grounding-type plug.
12 a. Mise à la terre ou Polarisation—Cet appareil est équipé avec un cordon
d'alimentation à trois fils. Il est a brancher sur une prise ayant un connecteur a
la terre. Assurez-vous que la connection a la terre ne manque pas.
13. Power-Cord Protection—Power-supply cords should be routed so that
they are not likely to be walked on or pinched by items placed upon or against
them,  paying particular attention to cords at plugs, convenience receptacles,
and the point where they exit from the product.

14. Outdoor Antenna Grounding—If an outside antenna or cable system is
connected to the product, be sure the antenna or cable system is grounded so
as to provide some protection against voltage surges and built-up static
charges. Article 810 of the National Electrical Code, ANSI/NFPA 70, provides
information with regard to proper grounding of the mast and supporting
structure, grounding of the lead-in wire to an antenna discharge unit, size of
grounding conductors, location of antenna-discharge unit, connection to
grounding electrodes, and requirements for the grounding electrode.
See Figure A.
15. Lightning—For added protection for this product during a lightning storm,
or when it is left unattended and unused for long periods of time, unplug it from
the wall outlet and disconnect the antenna or cable system. This will prevent
damage to the product due to lightning and power-line surges.
16. Power Lines—An outside antenna system should not be located in the
vicinity of overhead power lines, other electric light or power circuits, where it
can fall into such power lines or circuits.  When installing an outside antenna
system, extreme care should be taken to keep from touching such power lines
or circuits as contact with them may be fatal.
17. Overloading—Do not overload wall outlets, extension cords, or integral
convenience receptacles as this can result in a risk of fire or electric shock.
18. Object and Liquid Entry—Never push objects of any kind into this product
through openings as they may touch dangerous voltage points or short-out
parts that could result in a fire or electric shock.  Never spill liquid of any kind
on the product.
19. Servicing—Do not attempt to service this product yourself as opening
or removing covers may expose you to dangerous voltage or other hazards.
Refer all servicing to qualified service personnel.
20. Damage Requiring Service—Unplug this product from the wall outlet and
refer servicing to qualified service personnel under the following conditions:
a. When the power-supply cord or plug is damaged,
b. If liquid has been spilled, or objects have fallen into the product,
c. If the product has been exposed to rain or water,
d. If the product does not operate normally by following the operating
instructions.  Adjust only those controls that are covered by the operating
instructions as an improper adjustment of other controls  may result in damage
and will often require extensive work by a qualified technician to restore the
product to its normal operation,
e. If the product has been dropped or damaged in any way, and
f. When the product exhibits a distinct change in performance—this indicates
a need for service.
21. Replacement Parts—When replacement parts are required, be sure the
service technician has used replacement parts specified by the manufacturer
or have the same characteristics as the original part.  Unauthorized substitutes
may result in fire, electric shock or other hazards.
22. Safety Check—Upon completion of any service or repairs to this product,
ask the service technician to perform safety checks to determine that the
product is in proper operating condition.
23. Wall or Ceiling Mounting—The product should be mounted to a wall or
ceiling only as recommended by the manufacturer.
24. Heat—The product should be situated away from heat sources such as
radiators, heat registers, stoves, or other products (including amplifiers) that
produce heat.

NOTE TO CATV SYSTEM INSTALLERS:
THIS REMINDER IS PROVIDED TO CALL THE
CATV SYSTEM INSTALLER'S ATTENTION TO
ARTICLE 820 - 40 OF THE NEC THAT
PROVIDES GUIDELINES FOR PROPER
GROUNDING AND, IN PARTICULAR,
SPECIFIES THAT THE CABLE GROUND
SHALL BE CONNECTED TO THE
GROUNDING SYSTEM OF THE BUILDING, AS
CLOSE TO THE POINT OF CABLE ENTRY AS
PRACTICAL.

POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)

GROUND CLAMPS

GROUNDING CONDUCTORS
(NEC SECTION 810-21)

ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)

ANTENNA
LEAD IN
 WIRE

ELECTRIC
SERVICE
EQUIPMENT

GROUND CLAMP

NEC - 

NATIONAL ELECTRIC CODE

Figure A

Example of antenna grounding as per National Electrical Code, ANSI/NFPA 70

Summary of Contents for ALT72

Page 1: ... ALT 72 Assistive Listening System Contains an ALT 72 Assistive Listening Transmitter and 2 Model MR306 FM Receivers Instruction Manual Creating Sound Solutions for Easy ListeningTM ...

Page 2: ...uick stops excessive force and uneven surfaces may cause the product and cart combination to overturn The lightning flash with arrow head symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within...

Page 3: ...em is grounded so as to provide some protection against voltage surges and built up static charges Article 810 of the National Electrical Code ANSI NFPA 70 provides information with regard to proper grounding of the mast and supporting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna discharge unit connection to grounding electro...

Page 4: ...iv This page left intentionally blank ...

Page 5: ...ed with the system are 3 three ALT 72 Assistive Listening System decals These decals can be posted to inform people that a facility is equipped with the AudioAccentTM Assistive Listening System Caution Statements Important Safeguards Table of Contents Specifications Options and Accessories Introduction General Description Front Panel Controls and Indicators Rear Panel Controls and Connections Inst...

Page 6: ...ce unbalanced 16 to 4 dBu manual gain adjustment with front panel modulation indicator 20 Hz to 15 kHz 1 dB referenced to a standard 75 µSec pre emphasis curve Greater than 60 dB monaural Less than 0 25 typical 12 VDC 200 mA regulated by supplied wall AC Adapter Flexible 7 inch length whip 7 25 18 4 cm W x 1 6 4 1 cm H x 5 0 12 7 cm D with antenna removed 1 9 lbs 0 85 Kg FCC Part 15 Certification ...

Page 7: ...nnector for unbalanced audio input The transmitter shall provide a GROUND LIFT switch for the XLR input The transmitter shall permit switch selection of no limiting limiting only or limiting and compression operation from a front panel switch There shall be a front panel control to adjust the audio input level with an LED MODULATION indicator Sound System Amplifier Microphones wired or wireless ty...

Page 8: ...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 MODULATION indicator lights on audio peaks C L For audio sources that contain relatively low...

Page 9: ...T Connect audio to the appropriate input The unbalanced phono style input and the XLR balanced input are each always active so audio will be fed from whichever input is being used Do not attempt to use both inputs at once All inputs can be considered high impedance 20K Ohm 5 GROUND LIFT When switched ON this switch lifts or isolates the shield connection pin 1 of the XLR connector In some installa...

Page 10: ...e force to tighten the antenna it only needs to be finger tight If the optional magnetic mount antenna is more appropriate contact your dealer or the R L Drake Company The magnetic mount antenna installation and placement is detailed on page 5 of this manual 2 Make audio connections The ALT 72 will accept line level audio inputs The best sources for a signal from a sound system are as follows 1 TA...

Page 11: ... INPUT LEVEL control clockwise until the MODULATION LED indicator just begins to light on audio signal peaks Refer to the Front Panel Controls and Indicators section of this manual for details AC Adapter 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 ma...

Page 12: ...t the desired frequency 5 Adjust the volume control 3 to the desired level 6 Set the FM MONO Stereo switch 4 to the MONO position POWER SUPPLY Slide open the battery compartment cover 14 on the back of the unit and insert two AAA RO3 UM4 dry cells Make sure the and markings on the batteries match the markings inside the compartment Do not mix old and new batteries Do not mix alkaline standard carb...

Page 13: ...approaches for receiver management and earphone sanitation The following includes some options that customers have used successfully 1 Regular users purchase their own receiver and maintain the batteries and earphone 2 Some facilities label each receiver and earphone with the name of the person to which the receiver earphone is assigned and used 3 Ushers issue receivers to those people who request...

Page 14: ...he facts If we must call you it may take longer R L DRAKE is not responsible for damage caused by lightning nonprofes sional alterations acts of God shipping damage poor storage handling etc R L DRAKE will make note of any shipping damage upon receipt Should your warranty card not be on file at R L DRAKE you will need to send proof of purchase to receive warranty service Typically a copy of the in...

Page 15: ...rmance from this product Therefore carefully read the Instruction Manual This warranty does not apply to any defect that R L DRAKE COMPANY determines is due to 1 1 1 1 1 Improper maintenance or repair including the installation of parts or accessories that do not conform to the quality and specifications of the original parts 2 2 2 2 2 Misuse abuse neglect or improper installation 3 3 3 3 3 Accide...

Page 16: ... 743 4576 WORLD WIDE WEB SITE http www rldrake com is a registered trademark of the R L Drake Company Copyright 2002 R L Drake Co P N 3852429D 3 2002 Printed in the U S A NOTE Soon our area code will change from 513 to 937 If problems are experienced when dialing us please try the 937 area code We look forward to serving you soon ...

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