Toa WM-4300 User Manual
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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 k
Ω to DC power)
3
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
1
3
2
4
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.