Operational Description

FCC ID: TUV2142A

Operational Description

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FCCID_957669

Circuit’s Operation Description for 2142-A

Operation Frequency: 27.045MHz
Modulation Type: FSK

The TX of the mouse is mainly consisted of optical IC (U1), MCU & RF circuit (U2).

U2, L2 and D1 provide the circuit with a stable DC 3 V. X1 is an oscillator for system. X2 and U2
are for RF modulation and amplification. When the mouse is moving on the desktop, photoelectric
processor IC-U1 collects optical signals reflected by the desktop, and transfers them into the U2.
Meanwhile U2 receives data of key and coder. All data will be modulated and amplified to be
transmitted from pin 8 of U2.

SW-ID is a ID switch. When it is switched on, U2 transmits an ID code to the receiver which can
recognize the ID for communication. D4 is an indicator of power. It will flash if battery power is
low. When K1 is switched, the mouse will enter sleep mode as U2 with low voltage.

Document Created: 2008-06-19 08:23:34
Document Modified: 2008-06-19 08:23:34

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