User’s Manual
RF WIRELESS KEYBOARD Page No:
4 o f 4
3. Electrical Specification
3.1 Keyboard Transmitter
3.1.1 Operating voltage
The operating voltage range for keyboard is 4.5 ~ 5.2 Vdc. There are 4 AA batteries
providing 6.0V for operation, fed to keyboard via voltage regulator.
3.1.2 Current consumption
Typical current consumption is
30 mA, .Maximum at 50 mA
3.2 Receiver
3.2.1 Operating voltage
Voltage supplied to keyboard: 5+/-0.25 VDC
With ripple lower than 150mv, and capable of supply load current up to 100
mA with voltage drop less than 0.25 VDC
3.2.2 Current consumption
Under nominal 5 VDC power supplied, typical current
Consumption is 33 mA at normal operation, 60mA at maximum.
3.2.3 Pin outs of 6 pin PS2 min-DIN connector
Compatible with IBM PS2 spec.
3.2.4 LED indicators
There are two indicators(green) on the receiver: Receiving Data and Power. The
Data indicator will be ON only when data is receiving from the transmitter. The
Power will be ON only when the system is ON. During the Suspend and Sleep
modes, the Power LED will be OFF.
3.2.5
Cable
PS2 mini-DIN plug connector at two end of “Y” cable for both keyboard
and pointing device .
