Toa WM-4300 User Manual download pdf (Page 4)

11. AUDIO LEVEL ADJUSTMENT (SENSITIVITY CONTROL)

To change the factory-preset level, follow the procedures below.

Step 1. Holding the microphone body, slide the battery cover down to open it. The battery cover is designed

not to be removed from the body.

Step 2. Switch on the power of the tuner and microphone.

Step 3. Adjust the audio level control using the supplied screwdriver. The

microphone sensitivity increases as the control is rotated clockwise,

and decrease as rotated counterclockwise.

Step 4. Adjust the corresponding tuner's volume control so that its knob points

to the 2 o'clock position. If the tuner's AF PEAK indicator remains lit,

readjust the microphone's audio level control to the position that

causes the indicator to flash when the tuner output level reaches its

peak. The AF PEAK indicator lights when the output level reaches the

point of about 3 dB below the clipping level.

Note

The AF PEAK indicator operates in response to the volume control position.

However, the AF LEVEL indicator (on the WT-4800) indicates the level regardless of the volume

control setting.

Step 5. Replace the battery cover.

12. CONNECTOR PIN FUNCTIONS

The microphone's input connector is of TA-4F type.

[Input connector pin assignment]

1. Ground

2. DC power (+5 V)

3. Audio

4. Audio/+5 V (2.2 kΩ to DC power)

Audio level

control

Microphone Element Electret condenser type, cardioid pattern

Emission F3E

Frequency Range 690 – 865 MHz, UHF

Selectable Channel 64 frequencies (These may differ in countries.)

RF Carrier Power Less than 50 mW

Tone Frequency 32.768 kHz

Modulation System PLL synthesizer

Maximum Input Level 120 dB SPL

Battery 6LR61(9 V x 1)

Battery Life 10 hours (alkaline)

Indicator Power/Battery lamp (common use)

Antenna 1/4 λ herical type

Operating Temperature –10 to +50°C

Finish Resin, coating, dark gray

Dimensions 62 (w) x 142 (h) x 32 (d) mm

Weight 150 g (with battery)

13. SPECIFICATIONS

Note: The design and specifications are subject to change without notice for improvement.

• Accessories

Screwdriver (for setting) ........ 1

Channel identification seal ..... 1

Storage case ......................... 1

License requirement

Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference received,

including interference that may cause undesired operation.

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