Faroudja VP251 Installation & Operation Instructions Download

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APPENDIX A

VGA Connector and Component Video con-

nector Pinout

Function

Red Video

Green Video

Blue Video

Not Used

Ground

Red Return (Ground)

Green Return (Ground)

Blue Return (Ground)

Composite Sync

Composite Sync Return (Ground)

Not Used

Horizontal Sync

Vertical Sync

Not Used

Cable Lengths and Distribution Amplifiers

To achieve the best results from your installation,
we suggest the following minimum standards for
cable runs when a VP251 is used.

To preserve the video quality of the VP251, the
signal path should be no more than –3db down at
25 MHz through a 75 ohm cable. Any distribution
amplifier should have a bandwidth no less than
–3db down at 25 MHz.

The following cable lengths are the maximum rec-
ommended continuous lengths of 75 ohm coax
cable and 15 pin VGA cable (when using the VGA
output).

Cable Type

Maximum Length

Mini BNC cables, 75 ohm

100 Feet

1.15nS/Foot propagation

RG-59/U type cable, 75 ohm

150 Feet

75 ohm precision video cable

200 Feet

Belden 8281

15 pin, high resolution VGA cables

25 Feet

utilizing individual high resolution
mini-coax cables for each signal from
VP251 to monitor.

Summary of Contents for VP251

Page 1: ... Perfecting Video with a No Compromise Approach for Reproducing the Ultimate Film Experience The Faroudja VP251 Video Processor With Picture Plus Technology Installation Operation Instructions ...

Page 2: ...by Faroudja Laboratories Inc No part of this document may be copied photocopied reproduced translated or reproduced by any electronic medium or machine readable form without prior consent in writing from Faroudja Laboratories Inc The Faroudja Laboratories VP251 Line Doubler is covered by the following United States patents 4 030 121 4 179 705 4 240 105 4 262 304 4 847 681 4 864 389 4 876 596 4 893...

Page 3: ... Faroudja Laboratories has made use of techniques from Faroudja professional video equipment and incor porated these in the VP251 VP201 VP201U line doublers VP301 line multiplier and the 401 VP401U line quadruplers Faroudja s unique approach focuses on critical problem areas in the NTSC and PAL broadcast format With patented engineering and design work Yves and Faroudja Laboratories have created a...

Page 4: ...ality of video imaging has caught the eye of some of the world s greatest high technology com panies The following list represents those that have recognized the value of Faroudja s solutions to imaging problems and pay for the opportunity to incorporate this technology in their advanced video products as of January 1998 Canon Microtime Conrac Mitsubishi General Instrument NAC Grass Valley NEC Hit...

Page 5: ...l 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 i...

Page 6: ...Doubler Luminance signal now enters the Luminance Detail and Noise Reduction block where the functions of Noise Reduction and Detail Level are controlled The Luminance signal from the Luminance Detail and Noise Reduction block along with the R Y and B Y signals from the Chroma Line Doubler block feed the output transcoder and are converted to RGB signals These RGB signals are buffered and then sen...

Page 7: ...er pitch detail areas like the referee s shirt The VP251 has patented cross color suppression that elimi nates decoding errors of this type and enables the reproduction of sharper cleaner color images DOT CRAWL and HANGING DOTS This phenomenon is easily seen with large highly colored stationary graphics like titles and credits Dot crawl is a rapid upwards movement of colored dots on sharp vertical...

Page 8: ...l becomes very obvious when the more common sources are used The resultant picture is free of scan lines but dull with a serious loss of definition The solution is to expand the high frequencies without producing annoying and picture degrading artifacts The bandwidth expansion circuitry in the VP251 is exceptionally sophisticated using Faroudja s double dif ferentiation techniques to sharpen the e...

Page 9: ...oudja to order rack kits Ventilation The VP251 will require that air flows freely through both the bottom and top vent holes Blocking these holes will greatly reduce the reliability of the unit and lead to the possibility of overheating When the unit is rack mounted a minimum of 1 25 1 rack unit height of free space is to be pro vided for both the top and bottom of the unit to allow for proper coo...

Page 10: ...ncoming video signal broken down to the individual red green and blue format more typically found in the professional and broadcast area 6 Component Input refers to the video signal in its component form Y R Y B Y or Y Cr Cb for DVD carried in a 3 wire cable 7 Brightness The Brightness control adjusts the black levels in the image The level should be adjusted so that the color black is achieved no...

Page 11: ...ton 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 pres...

Page 12: ...et too high Color set too high Picture not stable Check interface cables Sync cables are swapped or not connected Input source not selected correctly Check input terminations Projector Fast Slow Horizontal time constant Should be set to fast Incorrect colors Tint in manual mode Defective output cable RGB cables are swapped Check projector monitor termination Input source not selected correctly No ...

Page 13: ... 0 to 15 Example VP251 B100 C75 ENTER 2 3 5 2 3 5 RxD TxD Ground TxD RxD Ground PC Computer 9 Pin Male D VP251 9 Pin Female D 2 Conductor Shielded Wire Recommended VP251 RS 232 Cable The following commands must be entered individually HELP Displays a help menu P0 Factory Preset not user changeable P1 User Preset 1 P2 User Preset 2 P3 User Preset 3 P4 User Preset 4 L1 Store User Preset 1 L2 Store U...

Page 14: ... the unit is power up The only exception is the Freeze function The Freeze function will be set off during the power up cycle When a command is received via the RS 232 only those functions are placed in the remote mode If a function is set via the remote it can be returned back to local mode by adjusting that function on the front panel This is accomplished by creating a window around that functio...

Page 15: ... when a VP251 is used To preserve the video quality of the VP251 the signal path should be no more than 3db down at 25 MHz through a 75 ohm cable Any distribution amplifier should have a bandwidth no less than 3db down at 25 MHz The following cable lengths are the maximum rec ommended continuous lengths of 75 ohm coax cable and 15 pin VGA cable when using the VGA output Cable Type Maximum Length M...

Page 16: ...posite Positive 714mVp p Vertical Sync 59 94Hz Negative 4Vp p 75 Ohm Horizontal Sync 31 5KHz Negative 4Vp p 75 Ohm Composite Sync 31 5KHz 59 94Hz Negative 4Vp p 75 Ohm Output VGA RGB 0 700mV Pk Pk 75 Ohms Line Doubler Mode Horizontal Sync BNC 31 4 Khz TTL 2K Ohms Vertical Sync BNC 59 94Hz TTL 2K Ohms Composite Sync BNC 31 4 Khz H 59 94Hz V TTL 2K Ohms D 15 VGA Standard Note The scan frequencies ar...

Page 17: ...for the selling distributor to repair or replace at its option those products which the selling distributor determines to have breached this warranty within the specified period Any claims under this warranty should be made by telephone or in writing to the sell ing distributor or FAROUDJA Laboratories No products should be returned to the selling distributor or to FAROUDJA Laboratories without it...

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