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Some parameters, such as active area and blanking, are input mode dependent. Before recalling a
user memory that has not been previously saved, it is best to reset that particular memory so it will
be programmed for the current input mode.
Baud Rate: Allows RS-232 remote users to select the baud rate that matches their remote control
device system.
Delimiters: Use the on-screen menu to select the desired command code delimiters. Extron scalers
can be set to recognize six sets of leading and end codes when using an RS-232 remote:
parentheses ( ), brackets [ ], braces{ }, slashes \ /, less and greater than < >, and signs !#. If desired,
several products may be connected together on the same RS-232 serial control line with each device set
for a different delimiter pair. Each unit will respond only to codes sent with the appropriate
delimiters and will ignore all other codes.
Reset RS-232 settings: Resets all RS-232 settings to factory default.
System Info: This is an informative display that shows a variety of information about the currently
selected input signal and scaler output settings on a single screen. The System Info display may be
useful for troubleshooting or to quickly verify various settings. The following information is included
in the System Info display:
•
Input source
•
Input horizontal scan rate
•
Output resolution
•
Output vertical refresh rate
•
Program version number
Choosing the Optimal Output Resolution and
Refresh Rate
Of all the settings on the IN1404, perhaps the most critical adjustment is the output resolution and
output refresh rate. Every display device has an optimal or native resolution and an optimal refresh
rate. This will vary depending on the type of display technology, if the display has a fixed number of
display elements (native resolution), the size of the pixels, the size of the display or display screen, and
even the distance of the viewer from the display screen. Setting the IN1404 to the output resolution
and refresh rate to match this optimal resolution for your data display will have an enormous impact
on the image quality.
Please note that the ideal resolution must also lie within the compatible scan range of the display
device. For example, some 27-36" presentation monitors are limited to input signals in the
30-50 kHz range. If the video scaler's output resolution and refresh rate settings are too high, the
signal will not be viewable on the display. Before selecting the output resolution and refresh rate, you
should check the specifications page in the operation manual for your display device to verify the
compatible horizontal scan range and vertical refresh rates. The large screen data projector list and
large data display list include signal compatibility information for both current and obsolete models of
data projectors, retro displays, presentation monitors and plasma displays.
CRT displays: Selecting the golden resolution
While CRT displays do not have a native resolution, they will have a "golden resolution," or sweet
spot, for input signal resolution. When the video scaler is set to the golden resolution of the CRT
display, the result is a sharp, detailed image without visible scan lines. If the video scaler is set below
the golden resolution, the displayed image will have tiny black lines between the image lines. If the
video scaler is set above the golden resolution, the lines will actually overlap; and the image will
appear soft and lose detail because there are more lines and pixels than the display can clearly resolve.
When experimenting to find the golden resolution for your CRT display device, it is best to set the
output refresh rate at 72 Hz and begin at the output resolution indicated in the chart on page 22. You
IN1404 User's Manual
•
Input signal standard and format
•
Input vertical refresh rate
•
Output horizontal scan rate
•
Output sync format
•
If input is interlaced
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