Barco SJ/T 11363-2006 用户手册
42
PDS • User’s Guide
4. Operation
Setup Menu
•
Direct measurement of the signal
If the input signal’s timing is too different from the saved configuration, a good lock may not
be possible. In this situation, the “Invalid Signal” message is displayed, and the video
output will be black. You will also see “Invalid Signal” if the configuration file for an input
has been deleted.
be possible. In this situation, the “Invalid Signal” message is displayed, and the video
output will be black. You will also see “Invalid Signal” if the configuration file for an input
has been deleted.
When Auto Acquire is
OFF
, dial in your timing parameters manually.
Please note the following important points:
•
It is recommended that you leave the Auto Acquire mode
ON
. Then, if the timing
changes on any input (whether or not you have a saved config file), you will
always get an output image. On the other hand, if the mode is
always get an output image. On the other hand, if the mode is
OFF
and the input
timing changes, the output will be black.
•
When the Auto Acquire mode is
ON
, the PDS automatically detects and acquires
the input video type and resolution (in most cases), and limits menu selections to
those applicable to the detected video type.
those applicable to the detected video type.
•
If you are an advanced user and you know the exact timing parameters for your
input(s), you can turn the Auto Acquire mode
input(s), you can turn the Auto Acquire mode
OFF
, and dial in your timing
parameters manually.
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From the Input Menu, select Aspect Ratio to display the Aspect Ratio Menu, which
allows you to set a pre-defined or custom ratio for the input.
allows you to set a pre-defined or custom ratio for the input.
Figure 4-11.
Aspect Ratio Menu (sample)
The following functions are available:
•
Aspect Ratio
— This function allow you to adjust the image to one of the
following values: 1:1, 3:2, 4:3, 5:4, 16:9, Custom.
•
Ratio
— If Custom is selected, the Ratio line appears:
~
Adjustment range
: 0.750 to 3.000. The default value depends on the
last Aspect Ratio selected before Custom was chosen.
~
Note that the PDS displays the input video aspect ratio according to the
input format detected. For example:
input format detected. For example:
Computer video at 1280x1024@60Hz defaults to 5:4 aspect ratio.
NTSC video defaults to 4:3, HDTV 1080i video defaults to 16:9.
Tip
If you have already saved configuration files for your inputs, it
is recommended that you turn the Auto Acquire mode
is recommended that you turn the Auto Acquire mode
OFF
.
This provides the fastest transition times. When the mode is
ON
, transition times will be greater, due to the time required
to analyze the input timing for each source.
ASPECT RATIO
> Aspect Ratio
Custom
Ratio
1.777