Christie DLV1400-DX User Manual page 54

Section 3: Operation
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Automatic Gain Control (AGC) affects decoded video
ENABLE DECODER AGC:
images only. Enter a checkmark (default) in most instances—this activates the
decoder's AGC circuit to ensure properly bright images. Delete the checkmark if a
decoded video image exhibits strange color artifacts such as stripes in highly saturated
colors, indicating an incompatibility between this source and the AGC.
For all but the more unusual video
VIDEO STANDARD:
standards available in the world, the projector automatically
detects the incoming horizontal and vertical frequencies and
sets the projector's processing of this signal to the
corresponding standard. The current video standard name
appears in the Video Options submenu, and includes an "A" if
it has been auto-detected. Press
different video standard from those available to the
projector—any that are disabled have frequency
characteristics that differ from those of the incoming signal. Selecting a specific
standard forces the projector to process the signal according to this standard.
NOTE: Best results are obtained with defined channels. Otherwise, switching from
one video source to another can sometimes cause slight disturbances in the display,
indicating that the Auto function is struggling. Recover by briefly selecting a different
video standard, then going back.
Table 3.3. Regions and Video Standards: Summary
Standard Where Used
NTSC N. America and Japan
NTSC 4.43 A tape-only standard for partially-translated hybrid signals
PAL Most of Europe, China, Australia, some of S. America, some of Africa
PAL-M Brazil
PAL-NC Argentina, Chile, other Latin American countries
PAL 60
SECAM France, Eastern Europe, most of Africa
NOTE: Generally, use "Auto" for all instances EXCEPT: 1) a poor quality input
signal or 2) a black-and-white video signal. In order to detect and display such
signals, select the relevant standard from the list.
This control
INPUT VIDEO BLACK:
compensates for incoming elevated black
levels present in certain video signals, and
ensures that blacks in the display are
neither crushed (i.e., where dark grays appear black) nor excessively elevated (i.e.,
where blacks appear dark gray). By default, the projector automatically determines the
best setting according to the type of incoming video signal:
•
– Used for DVD output with "enhanced black", SECAM, most PAL
0 IRE
standards, and Japanese NTSC.
•
– Used for most NTSC video signals.
7.5 IRE
For some types of video, you can override the setting. The control is disabled for other
types of video (and all graphics sources). Generally, if black appears crushed when
brightness = 50, choose "0 IRE". If black appears excessively elevated, use "7.5 IRE".
to view or select a
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