Product Specification
Product Name：2.4GHz Cordless keyboard
Model Name： Y-R0009
Brand Name： Logitech
Antenna
Internal
Type of Antenna (Loop....) PCB printed
antenna gain 0.45dBi
Method of Frequency generation 16 MHz Crystal + PLL
Number of channels 12
Carrier frequencies
Index RF channel Index RF channel
1 2405(0x05) 7 2441 (0x29)
2 2408 (0x08) 8 2444 (0x2C)
3 2414 (0x0E) 9 2462 (0x3E)
4 2417 (0x11) 10 2465 (0x41)
5 2432 (0x20) 11 2471 (0x47)
6 2435 (0x23) 12 2474 (0x4A)
20dB channel bandwidth (Carson's rule) for modulated
carrier
2 MHz @ -20 dBm
Channel switching frequency range 2405 MHz - 2474 MHz
Modulation characteristics Digital GFSK
Transmitter aggregate data rate 2Mbits/s per second
Effective radiated power 0 dBi
If intermittent duty duty cycle:
Tx on = 0.08 ms
Tx off = 7.92 ms
Duty cycle (Tx on / (Tx on + Tx off)) = 1%
Transmission range 100m max in free space
Method of Frequency generation 16 MHz Crystal + PLL
Range 100m in free space
Power source AA Alkaline battery
Power consumption 10mW typical (typing)
Nominal DC voltage 3V
Operating voltage 2.1V 3.2V
Extreme test voltage (low) 2.1V
Applies cut off voltage (automatic switch off) 2.1V typ
DC maximum current 30 mA worst case
Extreme Temperature range
0 °C to 40°C
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