CHIAYO IrDA-9000 - Manual (Page 6)

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4. To change the transmitter
’s channel, please press the synchronizing button of the receiver.
The receiver will transmit synchronizing signal to the transmitter and change its channel.
Other settings
1. Channel setting
Use MENU button to go to the CHANNEL page .
Pressing SET button will increase the channel number. The corresponding frequency will
change accordingly. 3 seconds after selecting a channel, it will be automatically saved.
2. Battery type setting
Use MENU button to go to the BATTERY TYPE page .
Press SET button to select either NiMH (rechargeable battery) or AKLN (alkaline battery). 3
seconds after selecting a battery type, it will be automatically saved.
Remark: NiMH battery must be selected when rechargeable battery is being used. Never select
AKLN (alkaline) when transmitter is intended for charging as alkaline battery isn
’t rechargeable.
Wrong battery selection will result in battery sensing electronics to display wrong and
misleading status information.
3. GAIN (Sensitivity) setting（SQ-8000 IrDA）
After taking off the cartridge module, a GAIN adjust trimmer potentiometer ○
11
is visible on the
small printed circuit board. When the transmitter is held at close proximity to the mouth, a lower
sensitivity (adjust in counterclockwise direction) is required, whereas a higher sensitivity (adjust
in clockwise direction) is necessary for stand mounted transmitter.