User's Manual

Typematic delay is 500ms and repeat rate for up and down is 2 per second
And can not be changed.
3.5 Pseudo N-Key Rollover Capability:
“N” key roll is the number of keys that may be held depressed simultaneously and gave the keyboard generate the
appropriate code for each pressed and released key without keyboard interruption.
3.6 Self Test:
The keyboard microprocessor will perform a self test after power-up or after the host system signal the keyboard to
perform a software Reset.
The microprocessor will check its data memory locations, do a sum check internal ROM check and any depressed
keys.
If the self test is correct, the keyboard will transmit an ‘AA’ code, this will be the first transmission following a Power-up
condition.
If the self test is unsuccessful, then the keyboard will transmit a ‘FD/FC’ code. In either case, after the self test check
the keyboard will begin normal operation.
3.7 Hot Key Definitions:
SK-1689 multimedia keyboard has 21 hot keys and an extra LED. When the “HOT KEY” key is pressed, that is to say,
the “hot Key” LED is lighted, the key pad is transformed to hot key.
They are layouted as above figure and classified into:
- Power management: it includes Sleep and Power keys.
They can be made the system in and out of sleep mode. When the sleep key is pressed, the
system and keyboard will be sleep mode and turn off the Num, scroll, caps lock. Then press the
“power”, “sleep” and “ space bar” these keys can be wake up the system. It comply with ACPI
power management.
- WWW launch keys include: WWW (home, search, favorite, back, forward, refresh, stop) and Mail keys.
- Eight multimedia keys includes play/pause, stop, media select, previous track, next track, volume up, volume
down and mute key. They can be used with 3 of the applications listed above music CD and VCD and voicemail
message.
- The extra “hot key and LED: When “hot key” key is pressed and released, the “hot key” LED is lighted and went
out. It make the keypad hot key enable and disable.
4. Connector and cable