Extron Electronics IN1408 - Manual (Page 31)

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IN1408 Operation Manual - V1.4 3/21/02 12:32 PM © 2002 - INLINE, Inc.
Advanced Input Settings
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Note: The Advanced Input Settings adjustments are a complex and powerful set of
adjustments designed to optimize the unit for non-standard video and RGB signals. Since
most users will never encounter such signals, only qualified A/V technicians should adjust the
Advanced Input Settings
The IN1408 adjusts automatically for different input and output modes. However, in cases where the
input signal has slightly different timing or is a non-standard mode, some settings may be adjusted
manually. All settings for each input and output mode (including non-standard input modes) are
stored internally so the adjustments will not have to be repeated after they are optimized. The various
input settings are outline below.
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Note: Figure 1 and the formulas and figures included on the following pages will assist in
the adjustment of these settings.
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Active Pixels: The number of pixels per line inside the input active area.
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Active Lines: The number of lines per frame inside the input active area. For interlaced
input signals, this number refers to the lines per frame after de-interlacing, not the
number of lines per field.
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H-Blanking: The number of pixels per line inside the blanking area that is on the left side
of the active area (including the horizontal sync width and the horizontal back porch).
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V-Blanking: The number of lines per frame inside the blanking area that is above the
active area (including the vertical sync height and the vertical back porch).
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Total Pixels:* The total number of pixels per line including the blanking on both sides
of the input active area (active, horizontal sync width, back porch and front porch). Refer
to the Advanced Input Settings Section on pages 31- 35 to determine how to set the total
pixels. The total number of lines per frame including the blanking above and below the
active area is determined by the input signal and cannot be adjusted by the user.
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Scan Type:* Three options are available:
o Interlaced - for interlaced signals
o Swap fields - to swap the interlaced fields (if necessary)
o Invert Sync - to invert the sync polarity (if necessary)
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Input Mode:* Four options are available:
o Auto Detect: The default mode at power up that allows the IN1408 to
automatically detect new input modes and adjust accordingly.
o Lockout Changes: Prevents the IN1408 from switching back and forth between
input modes, or flickering when small input mode changes occur (such as from a
VCR in fast forward or reverse).
o User Defined: All input modes have the same user definable settings, however,
they are restricted to values close to the input mode detected. If a full range of
values is necessary, the user-defined mode may be manually selected.
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Note: If auto detect cannot determine the input mode, the user defined mode is selected
automatically.