professional uhf wireless karaoke microphone · uhf wireless microphone system 2 4. only use...

Professional UHFWireless Karaoke Microphone

SKW-101

UHF Wireless microphone system

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FEATURES Adopt UHF high band, with less interference and more reliable transmission

Adopt multi-channel DPLL frequency synthesis technology, provided more than

200 channels(within the 50MHz frequency bandwidth, separated by 250KHz),

easily to avoid all kinds of interferences when many sets use together at the same

time.

Advanced automatic frequency technology, even if the transmitter’s and

receiver’s frequency has been changed, you can conveniently adjust the

frequency to correspond with the receiver by clicking the button.

Equipped with high-low power conversion function, you can use fluently not only

in the place of assembly activities (high-power launch), but also in the classroom,

KTV rooms (low-power launch), saving more battery power.

Lock function, avoid misuse.

Sensitivity is adjustable, the anti-interference improved.

LCD display, more intuitive.

CAUTION: READ THIS BEFORE OPERATING YOUR UNIT.

1. To assure the finest performance, please read this manual carefully. Keep it in a

safe place for future reference.

2. Do not use force on switches or connection wires. When moving unit, first

disconnect the power plug and the wires connected to other equipment. Never

pull the wire itself.

3. Install this unit in a cool, dry, clean place----away from windows, heat sources of

excessive vibration, dust, moisture and cold. To prevent fire or electrical shock, do

not expose this unit to rain or water.


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4. Only use provided power adapter, and confirm the voltage is correct to the adapter.

The use of other power adapter may damage the machine and void your warranty.

5. The machine use 220VAC power supply voltage, the use of other voltage may

cause fire and fault.

6. Avoid collisions or vibration of the machine.

7. Never open or try to change the circuit of the receiver, transmitters and the power

adapter. This could damage your machine and void your warranty. If the machine

fails to work, please send to the Maintenance Service Center authorized by

YMIOO.

8. Be sure to read the “Troubleshooting” section regarding common operating errors

before concluding that the unit is faulty.

9. If there are any abnormal cases happened during using, such as smoke, odor, etc.,

please unplug the adapter immediately, and send the machineto the Maintenance

Service Center authorized by YMIOO ASAP.

10. Use the 2A alkaline batteries or rechargeable batteries for the transmitter. Be sure

the polarities are correct. (See the illustration inside the battery compartment.)

Remove the batteries if the transmitters will not be used for an extended period of

time.

11. When not planning to use this machine for long periods of time, disconnect the

power adapter plug from the wall outlet.

12. Do not attempt to clean the unit with chemical solvents; this might damage the

finish. Use a clean, dry cloth.


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RECEIVER

SKW-101WIRELESS MICROPHONES RECENER

① Volume control ② Frequence/Channel set button ③ Button (UP) ④ Button (DOWN) ⑤ LCD display ⑥ Infrared frequence (IR) ⑦ Squelch control ⑧ Power button (ON/OFF) ⑨ DC socket for connection of main unit (Audio output is muted)⑩ Antenna B output socket 11 Level B output12 MIX output 13 Level A output14 Antenna A output socket

① 8-Step level display for receiver RF signal RF② 8-Step level display for receiver audio signal AF③ Frequency menu display④ Channel menu display ⑤ 6-bit alphanumeric display⑥ diversity display(Antenna A or Antenna B active)⑦ ”MUTE” display


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OPERATION OF THE RECEIVER

1.Adjust the volume to the smallest before turned on the transmitter, then turn on the

receiver, the LCD lights up and the alphanumeric displayed, then LCD will display the

channel and frequency of the receiver, press the SET button can change the status.

2. When the transmitter is off ,you should observe the RF and AF level, if strong

interference appeared, change the channel so as to avoid the interference point.

3. Turn on the transmitter, RF level meter lights up, adjust the volume to the properly,

speak, AF level meter of receiver lights up, when there is no sound or the level

meter lights don’t shine, indicating that the system is abnormal and should be

maintained.

4. Press the POWER button for 2 or 3 seconds, turn off the receiver.

OPERATION MENU OF LCD 1. Key functions and operations 1. Press the middle button "SET" can select menu and confirm your Settings

2. Press "▲" "▼" button to select or adjust the current menu, and then "SET" key set

to store your settings.

3.Long press "▲" "▼" key to select frequency and channel quickly


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2.LCD display

A.Infrared frequency

Press the “SET” button when the LCD display “PRG IR”,2-3 seconds later,

transmitting the infrared frequency to the transmitter.

B. Getting into the operating menu


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C. Channel/Frequency display


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D. Lock control


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TRANSMITTER

HAND-HELD TRANSMITTER


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OPERATION OF THE HANDHELD MICROPHONE 1. Click the power on. The Back Lights up ,LCD display the current channel and

capacity of battery.

2. When you want to change the channel or frequency, you should change the receiver

firstly, then take the transmitter pointing to the infrared window, press the “SET”

button, the channel has changed.

BELT-PACK TRANSMITTER

Microphone /line input(MIC/LINE) Power button

B Infrared frequence

Battery indication Antenna

ack spl intLCD displaySET buttonBattery trayVolume controlPower control

IR

OPERATING OF THE BELT-PACK TRANSMITTER

The same with handheld transmitter。


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RECOMMENDATIONS

How to use the Belt-pack wireless transmitter properly 1. Belt-pack transmitter utilize a separate 1/4 wavelength whip .The effect will be

reduced when the antenna be winded or touched by the user’s body.

2. Adjust the sensitivity moderately based on varies audio resources and microphones.

3. when using a Lavalier Microphone, in order to reduce the variations to minimum

when the user turns his or her head away from the microphone, attach the

microphone as centrally as possible .Attach the microphone carefully and conduct

the cable so that nose due to friction is avoided.

4. Always position the microphone at the corner of the mouth. You can

increasing/decreasing the bass by adjusting the talking distance to the

microphone.

5. When Lavalier Microphone used for live sound reinforcement, make sure that the

sound inlet is directed towards the mouth, speaker should be select and layout to

reduce the acoustic feedback in principle, in particular prone to acoustic feedback

of occasions, match acoustic feedback suppression.

How to use the hand-held wireless microphone properly 1. Hold the middle part of the microphone body. Holding too close to the sound inlet

basket will affect the microphone’s pick-up pattern, holding it at the lower part of

the body will reduce the transmitter’s range.

2. You can vary the bass reproduction by increasing/decreasing the talking distance

to the microphone.

How to use the wireless conference transmitter properly 1. Wireless conference transmitter using internal antenna wave antenna Bullwhip,

the antenna can not contact the body directly and it should not be entangled with

the microphone, otherwise the effect would be reduced.

2. It will generate plops if the Speaker and the front-end of the sound

head close too much, conversely the sensitivity will descend, to solve the

problem you have to turn up the volume in the live, but lead to harsh


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noise.

3. MIC bar of wireless conference transmitter should be connected better to the

pedestal, or it will generate great interference.

How to use the receiver properly 1. There are True diversity and Non-real diversity ,Non-real diversity is economic and

the True diversity has better effort on transmission，you can chose reasonable

according to you need .

2. Observe a minimum distance of 50CM between receiving antennas and

metal objects.

3. The range of the receiving varies because of many kinds of reasons. You

can have better effect where there are no large metal objects.

4. If reception conditions are not satisfied, you should use two remote antennas which

are connected via antenna cable.

Using several transmitters in the same place 1. In the 50 MHz band width, you can use 12 transmitters at the same time.

2. When using several transmitters simultaneously, interference can be avoided by

keep a minimum distance of 20CM between two transmitters.

3. When use many transmitters, we advise you to use the UHF Directional

antenna、UHF Antenna Booster, Active Antenna & power distribution system.

4. “Low-power” set used in KTV, private rooms, school classrooms, etc.,

Using as many as 200 microphones at the same time will not interfere

with each other.

5. The wireless transmitter should not set at the adjacent frequency

among four paths, for example, when the CHANNEL A set at

20,the rest of three channels should be avoided setting at 40、80、100

etc..The rules applies to the each channel.


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TROUBLESHOOTING If the unit fails to operate normally, check the following points to determine whether

the fault can be corrected by the simple measures suggested. If it cannot be corrected,

or if the fault is not listed in the PROBLEM column, disconnect the power cord and

contact your authorized YMIOO dealer or service center for help.

PROBLEM POSSIBLE CAUSE

No operation indication Transmitter’s batteries are exhausted or DC in is not

connected well.

No RF signal Transmitter and receiver are not at the same channel

Transmitter is out of range

RF signal available, no

audio signal, ”MUTE”

appears on the display

panel

Transmitter is muted(“MUTE”)

Receiver’s squelch threshold is adjusted too high

Transmitter doesn’t transmit a pilot tone

Audio signal has a high

level of background noise

Transmitter sensitivity is adjusted too low

Receiver’s AF output level is adjusted too low

Audio signal is distorted Transmitter sensitivity is adjusted too high

Receiver’s AF output level is adjusted too high

The use of

short-distance, Signal

instability

Transmitter set at a low-power

Squelch is too high

Receiver antenna set improper

Surrounded by strong electromagnetic interference


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SAFETY Care and maintenance: Keep the machine away from damp、electromagnetic field、high temperature. Never

expose them to direct sunlight .Take out of the batteries of the transmitter and unplug

the power wire of the receiver if you don’t use it for a long time.

Cleaning:： Pull out the plug, use a slightly damp cloth to clean the machine. Do not use any cleansing agents or solvents. Maintenance: Never open the machine by yourself when problems appeared, please contact the local distributor or call us directly, we will do our best! Repair: If units are opened by customers in breach of this instruction ,the warranty becomes null and void. System Frequency ranges 740-790MHz

Modulation Mode Broadband FM

Available Band Width 50MHz

Channel number 200

Channel spacing 250KHz

Frequency stability ±0.005%

Dynamic range 100dB

Peak deviation ±45KHz

Audio response 80Hz-18KHz(±3dB)

Comprehensive SNR >105 dB

Comprehensive Distortion ≤0.5%

Operating Temperature -10℃—+40℃


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RECEIVER Receive mode Double Conversion Super

Heterodyne Intermediate frequency The frist medium frequency:100MHz

The second medium frequency:10.7MHz

Wireless interface BNC /500Ω

Sensitivity 12dBµV (80 dBS/N )

Spurious rejection ≥75 dB

Sensitivity adjustment range 12-32dBV Maximum output level + 10 dBV

TRANSMITTER Output power High:30mW; Low:3mW Spurious rejection -60dB Voltage Two AA batteries

Current utility time High: >10 hours Low: >15 hours

ZHUHAI SANJIN INDUSTRIAL CO., LTD

professional uhf wireless karaoke microphone · uhf wireless microphone system 2 4. only use...

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