TOA Electronics WD-4800 General Description, Handling Precautions, Nomenclature And Functions

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

•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.

•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. A fire or electric shock may result.

2. GENERAL DESCRIPTION

The TOA Wireless Antenna Distributor WD-4800 is designed to be used in conjunction with a VHF/UHF band system for sound reinforcement applications. It comes with two channels, in which two input signals are mixed and distributed to four outputs. The WD-4800 also has four DC power distribution outputs.

3. HANDLING PRECAUTIONS

•When installing, keep the unit, receiving antennas, and antenna cables as far away as possible from fluorescent lamps, digital equipment, personal computers, and other equipment which generate high frequency noise.

•Avoid installing the receiving antennas in close proximity to metal objects, such as iron frames and lockers. Keep the antennas at least 30 cm away from the wall surface.

•Keep two antennas at least 3 m away from each other to obtain the optimum diversity effect, although this distance differs depending on the construction and size of the room where they are installed.

•When cleaning the case, use a dry cloth. Never use benzine, thinner or other volatile liquids.

4. NOMENCLATURE AND FUNCTIONS

[Front]		2
		POWER
		ON
	ANTENNA INPUT (75 Ω )	OFF
	ANTENNA DISTRIBUTOR WD-4800
3	4	1

1.Power switch

Press this switch to switch on the power. Press this switch again to switch off the power.

2.Power lamp

Lights when the power is switched on.

[Rear]

3.Front antenna input A

75 Ω , BNC. Delivers 9 V DC/25 mA for supplying power to an external antenna.

4.Front antenna input B

75 Ω , BNC. Delivers 9 V DC/25 mA for supplying power to an external antenna.

120V/230V	50/60Hz 25W		TUNER POWER SUPPLY	ANT INPUT B	ANT OUTPUT B (75 Ω )	ANT OUTPUT A (75 Ω )	ANT INPUT A
	VOLTAGE SELECT		13V 250 mA	(75 Ω )				(75 Ω )
	120V	230V
					ANTENNA DISTRIBUTOR WD-4800		ENGINEERED IN JAPAN	ASSEMBLED IN TAIWAN

	5	6	7	8	9	10	11
5.	AC inlet				9. Antenna distribution output B
6.	AC voltage selector				75 Ω , BNC.
	Selects the desired voltage.				10. Antenna distribution output A
7.	DC power distribution output				75 Ω , BNC.
	Distributes the DC power.				11. Rear antenna input A
8.	Rear antenna input B				75 Ω , BNC. Delivers 9 V DC/25 mA for supplying power

75 Ω , BNC. Delivers 9 V DC/25 mA for supplying power	to an external antenna.
to an external antenna.