Operational Description

FCC ID: E8HKR-0309

Operational Description

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FCCID_363263

1.5 Product Descriptions(Application/Features/Specification)
The EUT is a Wireless Keyboard. A major technical descriptions of EUT is described as following:

A. Operation Frequency CH1: 27.145 MHz and CH2: 27.195 MHz
B. Modulation Type FSK
C. Antenna Designation Integral
D. Number Of Channel 2
E. Channel Spacing N/A
F. Operation Methodology The EUT encoder generates a pulse code serially transmit (typical
designation) into the modulator(or called as mixer) stage in circuit.
This pulse signal mixed with the carrier at modulator(mixer) stage by
way of FSK mode frequency modulation. The modulation depth is
designed such as ± 5KHz in this application, that means the
pulse(may be at high level state or low level state) will trigger the
oscillator to generate a frequency at a specified fundamental
frequency +5KHz or −5KHz, depended on the designation. For
example, if the carrier frequency defined as fundamental frequency
+5KHz at high level state, then the alternative carrier frequency will be
fundamental frequency −5KHz at low level state.

Based on the application, features, or specification exhibited in User's Manual, the EUT is
considered as an ITE/Computing Device. More details of EUT technical specification, please
refer to the User's Manual (Attachment - E.)

Document Created: 2019-06-22 15:31:43
Document Modified: 2019-06-22 15:31:43

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