Operation - LY International Electronics H-66B Manual

Operation of Lavalier Mic transmitter
1. Channel adjustment
Press "SET" key one time, when LCD top right corner display digit "X.XX" will flash, user
can use "UP' & "DOWN" key to select the channel, frequency will change automatically,
frequency band is 250kHz, total 100 channel, user can save the setting with "SET" key
press.
2. Frequency band adjustment ( For example current is low band)
Press "SET" key two times, "BAN LO" will flash, user can use "UP' & "DOWN" key to select
the frequency band, and then press "SET" key to save the setting when LCD "BAN HI"
flashing.
3. RF PWR adjustment (For example current RF is in high status)
Press "SET" key four times, "RF HI" will flash, user can use "UP' & "DOWN" key to select
the RF PWR. LCD will display "RF LO" if user select low power, and then press "SET" key
to save the setting.
4. Sensitivity adjustment
Press "SET" key four times, LCD will display "VOL -30" or "VOL 0", the digits will flash,
user can use "UP' & "DOWN" key to select the sensitivity ( -30, -20, -10, 0, 0 is the
highest), and then press "SET" key to save the setting.
5. IR sync
Press "Down" key on receiver, and then use the transmitter IR sensor aim at the receiver's
IR port to transmit the parameter to receive, receiver will save the setting and exit
automatically if the IR sync succeed
6. Lock & Unlock
Hold on to press 'SET" key, and press "UP" key, LCD will display "LOC ON", this indicate
transmitter's function key was locked.
Hold on to press 'SET" key, and press "DOWN" key, LCD will display "LOC OFF", this
indicate transmitter has release the lock status.
(Transmitter unit will exit the setting if there is no operation after LCD digit flashing
within 6 seconds.)

Operation:

1. Connect the sound system
2. Turn volume of receiver and amplifier (KARAOKE system) to the lowest point.
3. Turn on sound system's power step by step.
4. Turn on transmitter microphone
5. Adjust receiver's volume to the middle. Open microphone's power, and then adjust the
volume of amplifier slowly, make sure the microphone achieve the best effect. You can go
around using place when testing. If there is no hum when you going around, it means you
got perfect sound effect.
6. If there are problems with receiver system, please see the "Troubleshooting". If you still
cannot find the solution, please contact professionals or local agency.
7. After using, turn off transmitter's power first, and then turn of sound system step by step.
Note:
1. Since the installation of antenna influences the operating efficiency of the receiver．The
most important rule is to minimized the distance between receiving antenna and
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