User manual

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BRIGHTNESS: Adjusts back ground black level of the screen image.
CONTRAST: Adjusts for ground white level of the screen image.
SHARPNESS: Adjusts the clarity and focus of the screen images.
H. POSITION: Moves the screen image left or right.
V. POSITION: Moves the screen up or down.
CLOCK: Adjusts image distortion appearing as vertical bars or “noise” On the screen .
PHASE: Adjusts image distortion appearing as horizontal “noise” on the screen.
COLOR METER: Adjusts color temperatures for users.
LANGUAGE: Allows you to choose from among five languages as English, French, German, Italia,
and simplified Chinese.
SPEAKER: Volume control.
OSD V .POSITION: Adjust operation of up/down on the screen
OSD H .POSITION: Adjust operation of right/left on the screen
OSD OFF TIME: OSD “time of staying” on the screen
RECALL: Returns all controls back to factory sorting.
EXIT / SAVE: Exit OSD control
Keyboard and Mouse
The keyboard designed for IBM PC XT/AT and all compatible machines. Three LEDs status, scan timing and
communications between the keyboard and PC. Support PC XT/AT and PS/2 keyboard.
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FUNCTION DESCRIPTIONS
Keyboard buffer
The keyboard will buffer 16 bytes in a first-in-first-out order when the system is able to receive scan codes
from the keyboard. The response codes and repeated codes will not be buffered. If keystrokes generate a
multiple-byte sequence, the entire sequence must fit into the buffer or the keystroke is discarded and a
buffer-overrun condition occurs.
Power-on Reset and self test
The duration of the keyboard Power-on-Reset (POR) should be within 150 milliseconds and 2 seconds after
the power is applied to the keyboard. After executing POR , the keyboard executes a self test. The LEDs are
turned on at the beginning and off at the end of the self test. The self test takes a minimum 300 milliseconds
and a maximum 500 milliseconds. If the self test is successful, a completion code AA hex is sent to the
system and the keyboard starts scanning. If the self test fails, and error code is sent, the keyboard is disabled
and waits for a command from the system. The completion codes are sent between 450 milliseconds and 2.5
seconds after POR, and between 300 and 500 milliseconds after a RESET command is acknowledged.