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PDF VP251 Data sheet ( Hoja de datos )

Número de pieza VP251
Descripción Video Processor
Fabricantes Faroudja 
Logotipo Faroudja Logotipo



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No Preview Available ! VP251 Hoja de datos, Descripción, Manual

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“Perfecting Video with a
No-Compromise Approach
for Reproducing
the Ultimate Film Experience”
The Faroudja
VP251 Video Processor
With Picture PlusTechnology
Installation & Operation
Instructions

1 page




VP251 pdf
SYSTEM DESCRIPTION
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The Faroudja VP251 Line Doubler/Video
Processor is a precision video instrument used to
convert NTSC interlaced signals into 480 visible,
progressively scanned lines (640X480 resolution).
Using Picture Plus™ technology, the VP251
removes typical video processing artifacts while
also increasing color purity and image detail,
closely matching 35mm film.
The VP251 is designed as an ideal match for
Data-Grade 7” CRT projectors requiring high reso-
lution images while also increasing the projector’s
light output. It is also an ideal match for DLP, LCD
projectors, Plasma displays and computer moni-
tors that require high quality, progressively
scanned signals.
Front panel features include Power, Input Select,
Brightness, Contrast, Color, Tint, and Detail. All of
the settings are automatically stored when the unit
is turned off. Also, up to 32 custom presets can be
set. All front panel features can be adjusted by
infrared and RS232 remote control.
Inputs include: Composite Video, S-Video
Component (Y,Cr,Cb/RGB) and Computer/HDTV.
The Video input may be connected by either a
BNC connection or a video RCA type connection.
These inputs are looped internally so that other
devices may use the signal.. The S-Video input
uses a standard 4-pin connector.
The VP251 requires a standard P15 to RGB
breakout cable when using the component input.
If the looped inputs are used, these cables should
be kept short (under 6' in length) or a video distrib-
ution amplifier should be used. This allows the
VP251 to keep the highest signal bandwidth possi-
ble without having the high frequencies being
attenuated in a long cable.
Output from the VP251 is provided by six BNC
connectors as well as one 15 pin ‘D’ connector.
The BNC outputs provided are Red, Green, Blue,
Horizontal Sync, Vertical Sync and Composite
Sync. Interface to monitors/projectors can be a 4
or 5 wire connection. The VP251 is capable of dri-
ving a monitor/projector using the BNC outputs as
well as a 15 pin ‘D’ connector, at the same time.
The monitor and projector must be compatible with
a 31.5KHz Horizontal scan rate.
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VP251 arduino
VIDEO PROCESSOR OPERATING INSTRUCTIONS
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Figure 4
The adjustment levels can also be seen on the projec-
tion screen for easy adjustment.
Contrast
Step 1
Press Control
Step 2
Adjust Level
11) Detail – This control adjusts the amount of large
and small edge details. The level should be set
where there is the maximum amount of edge detail
without excessive “ringing” and harshness. For
most sources, this should be left in the preset set-
ting.
12) Store – Press this button to activate the store func-
tion. The next preset pressed will store the current
settings.
13) Factory – The Factory Presets are set to broadcast
industry standards. And can be used as a reference
or to reset levels if they get misaligned.
14) Presets – This control stores all picture adjustments
in a nonvolatile memory. There is a separate bank of
four presets for each input, that are automatically
recalled when the input is selected.
15) Value Adjust – This rocker switch adjusts the value
of each function. Pressing the top portion increases
the level, pressing the bottom portion reduces the
level.
16) IR Window – Receives the information from the
remote control. Do not block this sensor.
DETAIL CONTROLS
The VP251 offers an advanced Detail circuit. The cotrol
works provides optimum picture detail without introducing
“ringing” artifacts for both horizontal and vertical edges.
This is very helpful with low quality sources such as VHS
tapes. Also, even high quality sources such as DVDs and
Laserdiscs can have excessive detail enhancement
recorded in the movie this can be seen as white halos
along dark edges. The detail controls can be reduced, to
limit the visibility of the halos.
However, for the most part, the settings should be left in
the preset setting. If the detail level must be turned way up
to see details, there is a good chance there are other fac-
tors involved, such as the projector becoming out of focus
PICTURE CONTROLS
The front panel offers complete controls of key picture
adjustment parameters; Brightness, Contrast, Tint, Color
and Detail.
To adjust the different controls simply press the button
associated with the parameter to be adjusted and toggle
the value key up or down (see Figure 4). The LCD readout
on the front panel provides a status report with both num-
bers and a bar graph for setting levels.
Presets – Once the levels have been adjusted for the best
image they can be stored as one of four presets. There
are four present for each input source, i.e. four for Video,
four for S-Video, etc.
To store, first adjust the image then press the Store button.
The next preset button pushed, will store those settings.
The preset will automatically be recalled the next time that
input is selected.
The Factory Preset button recalls all settings to SMPTE
reference standards. When aligning the projector for the
first time, the VP251 should be in the factory preset. Using
an external test pattern from a DVD, laserdisc or pattern
generator, adjust the brightness and contrast using the
projector’s controls. Then adjust Color, Tint, and Detail
using the controls on the VP251. Once completed, store
the settings in one of the presets.
To store presets using the On-Screen-Display (OSD) with
the infrared remote, first adjust the setting for the best
image possible, then use the Function key to scroll down
to the Store function. Use the Value key to select which
preset to store the information. The information will be
stored either when the Function button is touched again
or when the OSD times off (after approx. 10 seconds).
Select the different presets by pressing the Preset button
on the remote.
OSD Off – The OSD can be turned on and off by
pressing the Factory button and the Preset 1 button
at the same time.
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