DCX KeyFob Module
Operations Manual
DCX_KeyFob_UserManual_1.45_2007Apr2.doc
4
Technical Specifications
KeyFob Mechanical Design
The KeyFob has six mechanical components.
1.
Component Mounted PCB.
2.
Elastomer Buttons.
3.
Battery Clip.
4.
Plastic Housing (Top & Bottom Halves).
5.
Metal Key-Blade.
6.
Key Ring.
RKE Wireless Specifications
Stabilized by a SAW resonator, the resonant frequency is generated by an oscillator
transmitting on a frequency of 315MHZ, within an accuracy of +/-75kHz.
RKE Transmitter -- General Wireless Specifications
Parameter Specification
Units
Center Frequency, Accuracy, and Stability
Center Frequency (Carrier)
315.000
MHz
Ac/-
75
kHz
Sta/-
75
kHz
Polarization Ratio
(between any two axes)
5 (with linearly polarized receiving
antenna)
dB
Load Induced Frequency Shift
+/- 40
kHz
Operating Stability with Voltage Variation / Low Battery
Output Power Stability
5
dB
Frequency Shift
+/- 20
kHz