XtremeMac AirPlay IA-AIR-00, Руководство пользователя

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FCC ID: STQAIR00
Description
The ID appearance of IA-AIR-00 is shown in Figure 1 and 2. The functional block diagram of IA-AIR-00 is
depicted in Figure 3. And the schematic is shown in Figure 4. The first stage is the transmitter plug-in
iPOD
and is
tuned with the selected frequency.
ID appearance
The front of IA-AIR-00 has the said LCD and two control buttons. The LCD shows the transmission frequency
in MHz with one decimal place and the display will switch off automatically for power saving purpose after no further key
operation in 3sec. One of the control button symbolic “
— “ has the function of tuning the transmission frequency
downward in 200kHz step. Another control button marked “
＋
” tunes the frequency upward in 200kHz.
At the bottom side of IA-AIR-00, there are two connectors. The audio plug is the audio signal input connector.
And the dedicated 4 pins connector is the UART signal interface connection medium.
On the top of IA-AIR-00, a customer logo is silk-screen printed.
A brief product description is printed on the rear side of IA-AIR-00.
Block diagram
In the block diagram, there are totally six functional blocks, (1) Power management; (2) RF transmission; (3)
Micro-controller unit; (4) Input device and interface; (5) Output device; (6) Memory.
Schematic
The key components of power management have REG710NA-5TI and MMBT3906.
BH1415F is the key chips of RF transmission.
EM78P806A is the essential part of IA-AIR-00 as the centralized control block. The dedicated firmware is
resident inside the ROM part of the micro-controller.
The control buttons are the input device. The interface is the audio signal input and the UART interface.
The output device is LCD panel and the display backlight.
HT2201 works as the memory of IA-AIR-00. It stores the transmission frequency and provides the last
transmission frequency.