Toa DT-930 UL User Manual

OPERATING INSTRUCTIONS

AM/FM SYNTHESIZER TUNER DT-930 UL

Thank you for purchasing TOA's AM/FM Synthesizer Tuner. Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

IMPORTANT SAFETY INSTRUCTIONS

....... 2

2. SAFETY PRECAUTIONS ........................... 2

3. INFORMATION TO THE USER .................. 3

4. GENERAL DESCRIPTION ......................... 3

5. NOMENCLATURE AND FUNCTIONS

Front ............................................................ 4

Rear ............................................................. 4

6. RADIO RECEPTION

6.1. Auto Tuning Mode ................................ 5

6.2. Manual Tuning Mode ............................ 6

6.3. Direct Tuning Mode .............................. 6

RECEIVING FREQUENCY MEMORY SETTINGS

7.1. Manual Memory Preset ........................ 7

7.2. Auto Memory Preset ............................. 7

RECALLING THE PRESET FREQUENCY

....... 8

9. CONNECTIONS

9.1. Power Supply

and Amplifier Connections .................... 8

9.2. AM Antenna Connections ..................... 9

9.3. FM Antenna Connections ................... 10

10. RACK MOUNTING ................................... 11

11. SPECIFICATIONS .................................... 12

Accessories ............................................... 12

Optional Products ...................................... 12

TABLE OF CONTENTS

Indicates a potentially hazardous situation which, if mishandled, could result in death or serious personal injury.

WARNING

1. IMPORTANT SAFETY INSTRUCTIONS

• Read these instructions.

• Keep these instructions.

• Heed all warnings.

• Follow all instructions.

• Do not use this apparatus near water.

• Clean only with dry cloth.

• Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.

• Only use attachments/accessories specified by the manufacturer.

2. SAFETY PRECAUTIONS

• Before installation or use, be sure to carefully read all the instructions in this section for correct and safe operation.

• Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or cautions regarding safety.

• After reading, keep this manual handy for future reference.

Safety Symbol and Message Conventions

Safety symbols and messages described below are used in this manual to prevent bodily injury and property damage which could result from mishandling. Before operating your product, read this manual first and understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.

When Installing the Unit

• Do not expose the unit to rain or an environment where it may be splashed by water or other liquids, as doing so may result in fire or electric shock.

• Use the unit only with the voltage specified on the unit. Using a voltage higher than that which is specified may result in fire or electric shock.

• Do not cut, kink, otherwise damage nor modify the power supply cord. In addition, avoid using the power cord in close proximity to heaters, and never place heavy objects -- including the unit itself -- on the power cord, as doing so may result in fire or electric shock.

• Avoid installing or mounting the unit in unstable locations, such as on a rickety table or a slanted surface. Doing so may result in the unit falling down and causing personal injury and/or property damage.

• To prevent lightning strikes, install the unit at least five meters away from a lightning rod, and yet within the protective range (angle of 45°) of the lightning conductor. Lightning strikes may cause a fire, electric shock or personal injury.

• Since the unit is designed for in-door use, do not install it outdoors. If installed outdoors, the aging of parts causes the unit to fall off, resulting in personal injury. Also, when it gets wet with rain, there is a danger of electric shock.

When the Unit is in Use

• Should the following irregularity be found during use, immediately switch off the power, disconnect the power supply plug from the AC outlet and contact your nearest TOA dealer. Make no further attempt to operate the unit in this condition as this may cause fire or electric shock.

· If you detect smoke or a strange smell coming from the unit.

· If water or any metallic object gets into the unit.

· If the unit falls, or the unit case breaks.

· If the power supply cord is damaged (exposure of the core, disconnection, etc.)

· If it is malfunctioning (no tone sounds.)

• To prevent a fire or electric shock, never open nor remove the unit case as there are high voltage components inside the unit. Refer all servicing to your nearest TOA dealer.

• Do not place cups, bowls, or other containers of liquid or metallic objects on top of the unit. If they accidentally spill into the unit, this may cause a fire or electric shock.

• Do not touch a plug or antenna during thunder and lightning, as this may result in electric shock.

When Installing the Unit

• Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock.

• When unplugging the power supply cord, be sure to grasp the power supply plug; never pull on the cord itself. Operating the unit with a damaged power supply cord may cause a fire or electric shock.

• When moving the unit, be sure to remove its power supply cord from the wall outlet. Moving the unit with the power cord connected to the outlet may cause damage to the power cord, resulting in fire or electric shock. When removing the power cord, be sure to hold its plug to pull.

• Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the heaters, or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric shock.

• Leave the installation of an antenna to your TOA dealer because the installation requires expert knowledge. Improper installation may cause the antenna to fall, resulting in personal injury or electric shock.

• Be sure to follow the instructions below when rack-mounting the unit. Failure to do so may cause a fire or personal injury.

· Install the equipment rack on a stable, hard floor. Fix it with anchor bolts or take other arrangements to

prevent it from falling down.

· Use the screws supplied with the optional rack-mounting bracket.

· When connecting the unit's power cord to an AC outlet, use the AC outlet with current capacity allowable to

the unit.

When the Unit is in Use

• Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal injury and/or property damage. In addition, the object itself may fall off and cause injury and/or damage.

• Use the dedicated AC adapter for the unit. Note that the use of other adapter may cause a fire.

• Contact your TOA dealer as to the cleaning. If dust is allowed to accumulate in the unit over a long period of time, a fire or damage to the unit may result.

• If dust accumulates on the power supply plug or in the wall AC outlet, a fire may result. Clean it periodically. In addition, insert the plug in the wall outlet securely.

• Switch off the power, and unplug the power supply plug from the AC outlet for safety purposes when cleaning or leaving the unit unused for 10 days or more. Doing otherwise may cause a fire or electric shock.

Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or property damage.

CAUTION

3. INFORMATION TO THE USER

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

4. GENERAL DESCRIPTION

The DT-930 is an AM/FM radio tuner capable of storing up to 40 receiving channels, each of which can be recalled by one-touch operation. The unit can be mounted on an EIA equipment rack using the optional Rack Mounting Bracket MB-15B.

5. NOMENCLATURE AND FUNCTIONS

[Front]

1. Power switch

Pressing this switch switches on the power, and pressing the switch again switches off the power.

Note

The receiving frequencies stored in memory are retained even when the power is turned off.

2. Power indicator

Lights when the power is switched on. (Green)

3. Direct tuning key

Pressing this key selects direct tuning mode. (Refer to p. 6.)

4. Memory key

Stores the receiving frequency in memory.

5. Frequency/Channel selector key

Selects either the receiving frequency or the preset channel.

6. Auto/Manual mode selector key

Selects either auto or manual tuning mode. (Refer to p. 5.)

7. Tuning keys (UP/DOWN)

Used to change the receiving frequency or preset channel.

8. LCD indicator

Displays the AM or FM indication, receiving frequency, and channel number.

9. AM/FM band selector key

Selects the desired band. The indication alternates between AM and FM with each depression of this key.

10. Preset memory enter keys

Used to enter numerals when storing or recalling preset radio programs in memory, or when setting a receiving frequency in direct tuning mode.

11. Functional earth terminal

Hum noise may be generated when external equipment is connected to the unit. Connecting this terminal to the functional earth terminal of the external equipment may reduce the hum noise.

Note: This terminal is not for protective earth.

12. AM antenna terminals

Connect to an AM antenna (loop antenna or external antenna).

13. FM antenna terminals

Connect to an FM antenna. (300 Ω / 75Ω)

14. Monaural output terminals

Provide monaural audio output of received radio programs. (RCA jack, screw terminals / –15 dB, 10 kΩ load)

15. Stereo output terminals

Provide stereo audio output of received radio programs. (RCA jack / –15 dB, 10 kΩ load)

16. AC adapter input terminal

Connect the supplied AC adapter.

17. Cable holder

Insert the AC adapter cord near its plug into the cable holder to prevent the plug from coming off.

[Rear]

AM/FM indication

456 7 8 9 10

Frequency

Channel number

11 12 13 14

16 17

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