IBM SK-8808 User Manual

SK-8808 RF WIRELESS KEYBOARD Page No: 1 of 5

SK-8808

RF Wireless Keyboard

Manual

1. Product

This model includes a keyboard and a receiver. The receiver is in USB cable connection.
There are four batteries in the keyboard.

2. Operating voltage

The operating voltage range for keyboard is 2.6 ~ 3.6 Vdc. It is capable of
supplying a load current up to 25 mA. There are 4 AAA batteries providing 3.0V
for operation.

3. Modes of operation

There is no LED indicator on the keyboard. However, there are six icons and will
be used to display the following information on the screen:

Ÿ Email Waiting Status
Ÿ Keyboard Status
Ÿ Keyboard Num Lock Status
Ÿ Keyboard Caps Lock Status
Ÿ Keyboard Scroll Lock Status
Ÿ Mouse Status

The icons and status bar will be sized to match the same proportions as the Windows
Taskbar on the screen display. Its default location will be in the lower right corner above
the default Windows Taskbar location. The user will have the option to drag and drop the
status bar to any location on the active desktop.

4 Channel Selection

4.1. Channel and ID default setting

Channel ID

K/B 1 1

Mouse 4 1

Note: preset in the production line as default setting before delivery

SK-8808 RF WIRELESS KEYBOARD Page No: 2 of 5

4.2 Channel and ID numbers

Channel: six channels to Keyboard and six channels to Mouse

1 2 3 4 5 6 7 8 9 10 11 12

K/B1 K/B 2 K/B 3 Mouse 1 Mouse 2 Mouse 3 Mouse 4 Mouse 5 Mouse 6 K/B 4 K/B 5 K/B 6

ID: There are 16 ID from 0000 to 1111 for keyboard and another same 16 for
Mouse.

Keyboard Mouse
1 0000 1 0000
2 0001 2 0001
3 0010 3 0010
4 0011 4 0011
5 0100 5 0100
6 0101 6 0101
7 0110 7 0110
8 0111 8 0111
9 1000 9 1000

10 1001 10 1001
11 1010 11 1010
12 1011 12 1011
13 1100 13 1100
14 1101 14 1101
15 1110 15 1110
16 1111 16 1111

Note: The ID indication is to prevent one keyboard/Mouse controlling more than
one receiver.

4.3. EEPROM

There is one EEPROM IC in the Receiver and no EEPROM in Transmitter.

4.4 Operations

4.4.1 Battery removal

When the batteries are removed from the keyboard, the channel goes back
to its default setting on the keyboard while the channel in Receiver is no
change.

4.4.2 Channel Reset –to default setting

Procedure is as follows:

1. Click on the Channel Selection button on Rx (see Note 1 below).