Compaq TFT8030 User Manual page 11

Upon initial power-up, if the monitor determines that Channel 1
is connected, but the host PC is OFF or sending sleep
commands, or Channel 1 does not have a video cable attached,
the monitor displays Channel 2 video, if valid.
If all video inputs are connected to video sources that are not
active (i.e., the host CPU is OFF or is sending energy saving
commands to the monitor), the monitor enters sleep mode.
If no valid video signals are detected (no connection), the
"Check Video Cable" OSD message appears and the monitor
enters sleep mode.
Input Recall
The monitor includes memory for Channel 1 and Channel 2 so
that the monitor can store (and recall later) the video inputs that
were used in the previous session. On the next power-up, the
monitor polls the video inputs that are stored in memory. If valid
video is present, the recalled inputs are displayed. If a valid
signal is not present (i.e., host PC is off or video cables are not
connected) on either of the two inputs stored in memory, the
monitor enters the default input search mode described in the
previous section.
User Input Selection
This section details the video input detection requirements for
the User Select mode. Using the OSD, the user has the ability to
set the desired video input for each Input Channel (User Input 1
and User Input 2). In addition, the user can select the default
input channel, which has priority anytime valid video is
displayed.
For each input channel, once the user input has been selected
using the OSD, the monitor ceases the input recall and/or
automatic detection mode for that channel. The user inputs have
priority at power-up if valid (including sleep) video signals are
present.
TFT8030 User's Guide 9