Operational description

FCC ID: HYQ12BBT

Operational Description

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FCCID_244466

2. Technical description of the system 2.1 Type number -Transmitter : 12BBT 2.2 Specifications of transmitter -Nominal frequency : 314.35MHz -Local oscillator frequency : 314.35MHz SAW resonator -Radio frequency output power : 75.6dBµV/m or less at 3m (*) -Type of modulation : A1D -Power Supply - Nominal supply voltage : 3VDC - Type of Battery : One lithium battery -Antenna : Built-in type (Fixed) ∗ Note: Calculation of Voltage Average Level A transmitter has the one complete pulse train Voltage Average Level( µV) = (Epeak * Tt) / T = (Epeak * 75msec) / 150msec Epeak = Voltage peak level T = One complete pulse train time including blanking interval Tt = Total pulse of transmitter in one complete pulse train 2

3.Outline of the system 3.1 Description of the system operation This system is mainly used for locking or unlocking the doors of the vehicle. The transmitter sends a radio wave signal while the button is pushed. The receiver becomes active in response to the signal from the transmitter. 3.2 Transmitter The transmitter sends a signal using radio frequency. The transmitter emits the radio frequency while the button is depressed. If the button is depressed continuously, then the transmitter will only send a signal for a predetermined constant time(For example 20 seconds. This is an auto-power-off feature) 3


Document Created: 2002-05-15 16:13:30
Document Modified: 2002-05-15 16:13:30
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