User's Manual

REPORT NO : HCT-F02-1104 FCC ID : N5ZDN308 DATE : NOVEMBER 12, 2002
HYUNDAI CALIBRATION & CERTIFICATION TECHNOLOGIES CO., LTD.
SAN 136-1, AMI-RI , BUBAL-EUP, ICHEON-SI,KYOUNKI-DO, 467-701,KOREA
TEL : [phone] FAX : [phone]
DC/DC Converter
DC/DC Converter IC(IC4) is a PWM power generator, which is used to supply the stable 3VDC
power with the CPU, DSP, etc.
4-2. Key Block
There are 6 keys on the Logic board. They are tied each other on the data bus(Matrix structure). The
CPU reads the data bus and checks which key is pressed.
4-3. RX Receiver
RX Receiver Designed to get the High ‘Q’ on the Carrier Frequency 315.16MHz by connecting
IC7(Pin No 15&16)’s T-Type PCB ANT.
Amplify the fc and fL by LNA which placed inside of the IC7. Amplified fc and fL changed to Low
Injection Mixer that supply 400KHz IF Frequency(fIF). fIF will be the output of 10pin(Audio
Data Output) IC7 after went throw the IF Filter and Demodulator.
The output Data from Audio Data Port input to the 20pin of IC1(CPU) that control the On/Off the
“REC”.