Technical Description and User’s Manual of the DAG Key Gen. 6
PDSCA1 - T. Herzog
Seite 4 von 6
28.08.2014
Huf Hülsbeck & Fürst
2.2 Operation of channel-frequencies and power-modes
Normally each key operates in 3-channel mode at the respective frequencies listed above. Since some
countries allow operation with higher HF-transmitter power, the key fob can be configured between two
RF power modes.
When individual frequencies of the 3 HF-channels are not allowed to use this channel(s) will be switched
off. This especially information depends on the countries and is available by the country code of the elec-
tronic ignition switch. The key changes its operation at the first time it is be authentically used. The
change of used channel frequencies and power mode is durable locked and can not be changed after
this.
3 Block diagram
XTAL
24,74 MHz
HF Transceiver
433.47/433.92/434.37 MHz
314.00/314.45/314.90 MHz
HF Antenna
Matching
µController
2-4 Micro Switches
LED
Programmer
Interface
LF-ASIC
3D-LF-Coil
3 V
Battery
CR2032
PCB
Loop Antenna
SAW Filter
Temporarily
4.12 MHz (f
XTAL
/6)
3D-Transponder
21,845 kHz
RSSI-Measurement
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