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Sencore VideoPro VP400 Series, Operation Manual

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Sencore VideoPro VP400 Series Operation Manual Download Page 31

VP400 Series Video Pro 

Form7343A 

Operation Manual 

 

32

Testing Display Inputs with the VideoPro 

 
A multi-media generator, such as the Sencore VideoPro can be used to apply a test signal to the 
inputs of a video display, video signal processor, modulator and other standard video equipment. 
This section describes the connections and setup when using the Sencore VideoPro for testing 
various display inputs. 
 

 
 
NTSC RF to Antenna Input 

 

Standard NTSC video signals are carried on 
RF carriers that are transmitted by 
broadcasters or carried on cable television 
systems. TV receivers accept these RF-video 
signals, tune to the user selected channel and 
process them for display.  An NTSC RF 
generator produces one or more TV-RF 
carriers for testing a display’s antenna input 
and associated receive circuitry. 
 
To test the antenna input on a display, connect 
the RF test cable (39G189) from the RF 

output jack of the generator to the antenna 
input on the display. Select the NTSC/PAL 
selection in the Signal Type menu. Select one 
of the NTSC – RF – CH selections in the 
Format menu for the desired RF channel. You 
may choose RF channel, 2, 3, 4, or 6. Select 
the Antenna Input from the receiver/monitors 
input menu. Select the receivers channel 
number to agree with the RF channel selected 
on the generator. The receiver/ monitor 
should decode the TV-RF NTSC signal and 
display the video test pattern. 

 
 

 
 
 
 

Summary of Contents for VideoPro VP400 Series

Page 1: ...ies Video Pro Form7343A Operation Manual VP400 Series VideoPro Multimedia Video Generators VP400 VP401 VP402 VP403 VP403C VP400SH VP401SH VP403SH VP403CSH Operation Manual 3200 Sencore Drive Sioux Falls SD 57107 ...

Page 2: ...nd Usage 18 Applications 31 Display Inputs 31 Testing Display Inputs with the VideoPro 32 NTSC RF to Antenna Input 32 ATSC HDTV RF to Antenna Input 33 Composite Video NTSC to Video Input 34 S Video NTSC to S Video Input 35 Component YPbPr to Component HDTV Input 36 RGB to RGB HDTV Input 37 RGB to VGA SVGA Input 38 DVI to DVI Input 39 DVI to HDMI Input 40 Display Data Channel DDC 41 Appendix A Vide...

Page 3: ...ferences among the models The VP403 includes all signal output options including NTSC RF DVI and ATSC RF The VP402 VP401 and VP400 do not include various outputs as indicated by a NO in the chart VideoPro Multimedia Video Generators Sencore Model s Composite NTSC PAL S Video NTSC PAL Y Pb Pr Component HDTV SDTV R G B H V Analog VESA Mac NTSC RF Ch 2 3 5 6 D V I VESA Mac HDTV ATSC RF 8 VSB Ch 2 4 7...

Page 4: ... bit 1 485 Gb s 525i 720x486 59 94 ITU R BT 601 4 625i 720x576 50i ITU R BT 601 4 HDSDI SH only SMPTE 259M 10 bit 270 Mb s Formats 720p 60 59 94 50 Hz 1080i 1080p 30 29 97 25 24 23 98 Hz Patterns SMPTE Bar Staircase H_Stair Pluge Needle HiLoTrk Overscan Sharpness Window1 Window2 Raster DecodAdj DecodChk ColorBar Croshhatch Converge Linearity Anamorphic Ramp Regulate Checker Multiburst Focus Still ...

Page 5: ...es at the same time Attempting to operate the generator or recharge the batteries with any other type of external power supply may cause operator injury and or damage to the generator Furthermore do not use or modify the generator for use with vehicle 12VDC power These voltage sources are unregulated and can approach voltages of nearly 14V causing circuit stress and possible premature circuit fail...

Page 6: ...VP400 Series Video Pro Form7343A Operation Manual 7 Making Connections VP400 401 ...

Page 7: ...VP400 Series Video Pro Form7343A Operation Manual 8 Making Connections VP402 403 ...

Page 8: ...o BNC 6 ft cable 39G232 Connects the NTSC PAL output jack of generator to the video inputs of a display 5 DVI A to VGA HD 15 F Adapter 39G1061 Adapts the analog DVI outputs of the generator to a standard VGA HD 15 plug configuration 6 SVHS 4 pin mini din connector cable 39G270 Connects the S Video output jack of the generator to the Y C or S Video input of a display 7 Coaxial 6ft cable F to Quick ...

Page 9: ...rious signal types that can be produced by the generator See Signal Types section of this manual 4 FORMAT pushbutton Selects a menu s listing the various formats within each signal type that can be produced by the generator See Format section of this manual 5 PATTERN pushbutton Selects a menu s listing the various video test patterns produced by the generator See the Pattern Description and Usage ...

Page 10: ...F connector on channel 2 3 4 or 6 HDTV SDTV RF 8VSB TV Digital video with RF carrier modulated with 8 level vestigial side band modulation per ATSC standards on channels 2 4 7 10 and 30 32 HDTV SDTV DVI Single link digital video interface of red green blue HDTV SDTV video signals via differential data and clock lines with a standard DVI connector VESA Mac DVI Single link digital video interface of...

Page 11: ... video test patterns not all are available on each signal type and format selection The Pattern menus list the available video patterns for the signal type and format selected Window Pattern IRE Adjust Menu The Pattern menu screen that lists the Window 1 Window 2 and Raster patterns includes a special test option listed as IRE adjust in the bottom line of the display menu When in an IRE Adjust mod...

Page 12: ...pulses are separate and contained on separate connector pins and wires between the generator and display Red Green Blue Gating The left side of the gating menu provides on off control of the individual R G B video outputs For example pressing the pushbutton beside the RED display indicator turns on or off the red color An asterisk indicates the color output is active Color gating is not available ...

Page 13: ...o the Sencore 400 series VideoPro Generators Check with the factory on the availability of Video Generator Management VGM software The firmware in the 400 series generators contains a sample sequence in memory In the Sequence sub menu pressing the or Scroll pushbutton increments through the defined sequence Each sequence loads a specified format and pattern that is output by the generator The gene...

Page 14: ...elected format permits RGB gating not with YPbPr or ATSC RF Audio Sub Menu The Audio sub menu provides selections to turn on or off the left and right stereo audio outputs of the generator Pressing the pushbutton beside the display toggles the left or right audio signal on or off as indicated in the display The L Audio menu button turns on and off the RF audio modulation in the NTSC RF Signal type...

Page 15: ...ight on or off with the front panel BACKLIGHT pushbutton The Pwr Save function operates differently when the AC Power Adapter is connected to the generator After 30 minutes the generator remains on but starts to cycle through its video patterns Pressing the clear formats Clr Fmts option pushbutton results in a second menu asking for confirmation to clear all formats in memory Selecting Yes in this...

Page 16: ...It is possible that the display s EDID data will include non VESA formats These non standard formats will not be listed DDC Step The DDC Step sub menu permits you to select and step through each of the video formats in the list produced by the Learn Formats functions The generator outputs the resolution format selected from the list To step through and select each format press the scroll pushbutto...

Page 17: ...ion 32 horizontal by 18 vertical lines crosshatch forming a 16 9 aspect ratio pattern When viewed on a display device with standard 4 3 aspect ratio the pattern will appear stretched vertically with crosshatch boxes forming tall rectangles When pattern is displayed in non HD 4 3 format e g NTSC VESA or SDTV and then stretched to 16 9 aspect ratio with a display device s anamorphic stretch feature ...

Page 18: ...ging of the vertical line pattern transitions Color Bar Pattern Description Seven equal width vertical bars with 75 white gray at left followed by three primary and three secondary colors Color bars are at 100 saturation with 75 amplitude Individual colors can be gated on or off with the Video Gate buttons to view only the red green or blue components of the pattern Pattern Usage Use as an overall...

Page 19: ...ence on an internally generated pattern doesn t match its convergence on external input video signals Converge Pattern Description This pattern produces 9 horizontal lines and 17 vertical lines forming square boxes on a black background The lines produced are not white but are broken into 3 equal segments that alternate between red green and blue between intersecting lines The resulting boxes have...

Page 20: ...ontrols are used to adjust the blue section and then service menu controls are used to adjust the red and green sections Service menu decoder matrix adjustments typically include RYR red gain RYB red hue GYR green gain GYB green hue adjustments or simply a number of axis settings DecodChk Pattern Description Red green and blue primary color blocks on a 75 white background The red and green primary...

Page 21: ...e adjusted for compromise focus between the center of the screen and the edges of the screen adjusting for sharpest focus at a midpoint usually works well A video or data display with two focus controls is usually adjusted for best center focus with one of the controls and best edge focus with the other control HiLoTrk Pattern Description The pattern is divided into a top half and a bottom half Th...

Page 22: ...des of the display when checking grayscale tracking observe the top to bottom center of the display To check the effects of color overdrive at the sides of the display observe by eye or use a color analyzer to check the color at the left center and right end of one horizontal bar Linearity Pattern Description Linearity is a combination pattern including circles and lines on a black raster backgrou...

Page 23: ...ption This pattern is black on top and white on bottom with lines needle pulses drawn from top to bottom on each side of the pattern through the black white transition Electrically the needle pulse lines are the same width on the top and the bottom of the pattern A five step grayscale is positioned on the center of the upper black pattern area The top grayscale block is 100 white Pattern Usage Thi...

Page 24: ... the four edges mark 5 10 15 and 20 overscan A green rectangle outlines the 5 overscan area and a red rectangle outlines the 10 overscan area An X marks the electrical center of the pattern Pattern Usage Used to check and adjust for the proper geometry of a display including picture centering size trapezoid keystone correction pincushion bow correction and linearity Horizontal and vertical centeri...

Page 25: ...el This can be seen especially well with the brightness black level control adjusted to a slightly higher than normal setting If the brightness level of the outer two rectangular zones remain constant as the second zone from the center alternates between black and blacker than black the display has good DC restoration If a display has good DC restoration its brightness black level control can be a...

Page 26: ...scription This is a full field raster pattern Pattern luminance level is adjustable from 100 IRE to 0 IRE in either 1 or 5 IRE steps Individual colors can be gated on or off in the Gating menu to produce red green blue cyan magenta and yellow rasters not in YPbPr or ATSC RF formats Pattern Usage Use to check color purity and display chrominance uniformity Color purity problems are usually caused b...

Page 27: ...ines of increasing width passing through each box The lines are white on the black boxes and black on the white boxes Pattern Usage Use to align contrast picture aperture and scan velocity modulation SVM adjustments on displays These and other similar controls artificially enhance picture transitions between black and white Ideal alignment settings would result in the bottom center vertical lines ...

Page 28: ... RGB input signal also YPbPr inputs may not have both color and hue adjustments Also use this pattern to adjust a display s black level at a medium APL With the brightness black level control first adjusted to a slightly higher than normal setting reduce the brightness control setting until the slightly blacker than black bar under the large cyan bar and the black bar under the large red bar are b...

Page 29: ...n consists of an upper and lower section The top and bottom section contains bars that vary in level from black to white in 17 steps The top section progresses from black to white in 17 steps from left to right on a display The bottom section progresses from white to black in 17 steps from left to right on a display Since the progression from black to white is opposite on the top and bottom they p...

Page 30: ...nt or troubleshooting applications The Application section of this manual shows how to use the VP403 to substitute for a variety of signal interface formats that exist in today s multi media video environment Display Inputs Video signals may be interfaced to a multi media display using several different video signal types including 1 TV RF Video 2 Composite Video 3 Y C video or S Video 4 Component...

Page 31: ...e RF video signals tune to the user selected channel and process them for display An NTSC RF generator produces one or more TV RF carriers for testing a display s antenna input and associated receive circuitry To test the antenna input on a display connect the RF test cable 39G189 from the RF output jack of the generator to the antenna input on the display Select the NTSC PAL selection in the Sign...

Page 32: ...To test the ATSC input of an HDTV receiver monitor connect the RF test cable 39G189 between the ATSC output of the generator and the ATSC input of the receiver Select the HDTV SDTV RF 8VSB Signal Type in the Signal Type menu Choose a resolution format from the Format menu The upper most display menu of HDTV SDTV formats lists the most popular resolutions used and are compatible with most HD ready ...

Page 33: ...eo input To test the video input connect the BNC video test lead 39G232 from the generator s Composite Output to the Video input of the display Since the display likely uses an RCA phono connector you will need to connect a BNC to RCA phono adapter 26G1255 to the display end of the BNC cable To output a composite video signal from the generator select the NTSC PAL selection in the Signal Type menu...

Page 34: ...erformance VCR formats An S video generator can be used to substitute a signal into an S video input for testing and aligning video equipment To test the S Video input connect the S video Cable 39G270 from the S Video Output jack of the generator to the S video input jack of the display To output an S video signal from the generator select the NTSC PAL selection in the Signal Type menu Select the ...

Page 35: ...o a display An HDTV SDTV component video generator may be used to substitute for HDTV component video signal sources when aligning or troubleshooting HDTV SDTV video equipment To test the component video input YPbPr connect the DVI to BNC test lead cable 39G1059 from the generators DVI output to the display s Y Pr and Pb inputs You will likely need to use the BNC to RCA adapters 26G1255 to connect...

Page 36: ...4 wire RGB system with composite sync is being used Select ACS when analog sync is being added to the green signal wire in a 3 wire RGB interface To supply an HDTV signal from the VideoPro to the RGB display inputs connect the DVI to BNC connector cable 39G1059 from the generator s DVI Output to the RGB inputs of the display The red green and blue colored cables are the R G B signals respectively ...

Page 37: ...ion and 480 vertical pixels of resolution 480 scan lines with a picture refresh frequency of 60 Hz To test the VGA SVGA VESA inputs of a display using a standard 15 pin HD connector connect the DVI VGA Adapter 39G1061 to the DVI output of the VideoPro Use a standard VGA cable connected from the display input to the output of the adapter Sencore optional cable 39G798 Select the VESA Mac RGB signal ...

Page 38: ...ect the DVI test lead 39G1060 between the generator and the DVI inputs of the monitor Select either the HDTV SDTV DVI or VESA Mac DVI selections in the Signal Type menu Use the HDTV SDTV DVI when testing HDTV SDTV monitors Use the VESA Mac DVI signal type when testing computer monitors data projectors and multi media projectors Note Many multi media displays are capable of receiving and decoding b...

Page 39: ...able is Sencore part number DH1000 Connect the DH1000 or an equivalent adapter cable from the DVI output jack of the VideoPro to the HDMI input of the display Select either the HDTV SDTV DVI or VESA Mac DVI selections in the Signal Type menu Use the HDTV SDTV DVI when testing HDTV SDTV monitors Use the VESA Mac DVI signal type when testing computer monitors data projectors and multi media projecto...

Page 40: ... including a serial clock SCL line and a serial data SDA line Communication over these lines can be either uni directional or bi directional Several revisions of DDC protocols have evolved DDC1 is uni directional from the display to the host display data is sent continuously clocked by vertical sync DDC2B DDC2B and DDC2AB are bi directional with the host initiating a request for data and the displ...

Page 41: ...ble for use by the host to supply 5V to the display s DDC circuits The display has the option to use this supply to keep the DDC capable circuits active while powered off Pin 16 is a detection pin used to sense when a display is plugged into the DVI jack When the host detects over 2 4V or logic high on pin 16 it can begin a DDC test as part of the plug and play setup The Sencore VideoPro generator...

Page 42: ...1 1280x720_60Hz 76 591 76 591 1 1280x960_85Hz 148 500 148 500 1 1360x768_60Hz 85 499 85 499 1 1280x1024_60Hz 108 000 108 000 1 1365x1024_60Hz 119 999 119 999 1 1280x1024_75Hz 135 000 135 000 1 1365x1024_75Hz 144 000 144 000 1 1280x1024_85Hz 157 500 78 750 2 1440x960_72Hz 129 024 129 024 1 1600x1200_60Hz 162 000 81 000 2 960p59 107 999 107 999 1 1600x1200_65Hz 175 500 87 750 2 1600x1200_70Hz 189 00...

Page 43: ...el 3 Sharpness 4 Tint Chroma Hue 5 Color Chroma Saturation Brightness Control The brightness control adjusts the light level of the darkest portions of a picture that s why this control is more accurately called the black level control When the black level is set too dark the subtle dark gray details of a scene are lost to black When the black level is set too bright the darkest grays and deep bla...

Page 44: ...l usually be viewed in a darkened room adjust the brightness control with a low APL pattern such as the Pluge pattern If the display will usually be viewed in a bright room adjust the brightness control with the pluge levels in a medium or high APL pattern such as the SMPTE Bar pattern or one of the Window patterns set to a high IRE level Sharpness Control The sharpness control is designed to enha...

Page 45: ... contrast control until the top white bar is the same width as the four gray bars under it This will ensure that no pixel blooming is occurring Also observe the needle pulses vertical lines in the picture as you adjust the contrast control These lines should be straight If the contrast is set too high the display s power supply may cause the needle pulses to bend This line bending creates unwanted...

Page 46: ...small bars below them Adjust the color control to make these bars appear the same light level as viewed through a blue filter To double check the color control adjustment remove the blue filter and look at the yellow and red bars These bars should appear very colorful without any signs of blooming into the adjacent bars Large Outside Bar Small Center Bar Large Outside Bar Small Center Bar ...

Page 47: ...ck the adjustment remove the blue filter and observe the yellow and cyan bars If the tint is set too red the cyan bar will look green and the yellow bar will look orange If the tint is set too green the cyan bar will look blue and the yellow bar will look green Remember that the user controls should be calibrated with the room lighting adjusted to the preferred level for movie viewing These contro...

Page 48: ... color accuracy with standard program material 2 Adjust the brightness control to make blacks just black use the Pluge pattern or use the pluge bars in the Window pattern and adjust the contrast control for maximum brightness without blooming or raster distortion use the Needle pattern Fig 1 VideoPro Pluge pattern 3 Select the VideoPro Window1 pattern and adjust the pattern level for a low IRE lev...

Page 49: ...re available select the missing color as your reference color in the ColorPro Delta RGB display window 7 Re select the Window1 pattern readjust the pattern IRE level to produce approximately 1 2 footlamberts of luminance and recheck readjust the cutoff controls for the desired chromaticity coordinates 8 Repeat steps 5 7 until the display s color temperature remains relatively constant tracks over ...

Page 50: ...ii Scenes 1080i Colorful Hot Air Balloons 4 Select VP403C Video 1 Pattern 5 Set up ATSC Receiver vhf uhf Perform Channel Search SCAN 6 Select ATSC Channel on the receiver 1 Connect the VP403C to ATSC Receiver The VP403C is a multimedia generator with multiple output signal types It provides NTSC RF NTSC and PAL composite video NTSC and PAL S video SDTV HDTV YPbPr component video SDTV HDTV and VESA...

Page 51: ...to the second menu Press the button beside the display listing the SDTV HDTV RF ATSC signal type Upon choosing this signal type an ATSC RF channel menu appears You may choose any RF channel in the following ranges 2 4 7 10 or 30 32 Use the scroll down pushbuttons to view the menu pages providing these channel choices Press the button beside the display for the desired ATSC RF channel After the cha...

Page 52: ...in the 720P59 or 1080i29 format Push the button located beside the display screen for one of these formats The 720P59 format provides the Hot Air balloon clip and the 1080i29 format provides the Hawaii nature scene clip 1080i29 Hawaii Nature Scenes 720P59 Colorful Hot Air Balloons Figure 3 Select the resolution format either 720P59 or 1080i29 by pressing the pushbutton beside the display screen 4 ...

Page 53: ...igure the receiver This requires going into the setup menu and making several key selections It further requires performing a channel tuning search to find and configure the receiver to display the digital channel First go into the receiver s signal input menu s and find the setup menu for specifying the input RF or antenna inputs You must select the input in which you have the generator connected...

Page 54: ...earch exit the setup menu of the display Check menu settings on the receiver to be sure you have selected the proper input if the receiver has more than one RF input Note Navigate the menus to be sure the proper antenna 1 or antenna 2 choice is selected for RF channel viewing if the display has more than one RF input connector Exit the menu and increment up or down in channel numbers if necessary ...

Page 55: ...utions Figure 6 Photo still images are part of the video pattern selections on the VP403C s ATSC RF signal type 8 To View the ATSC RF PICTURE Image on a Display 1 Follow the same steps as previously outlined in this document to produce a video test clip on an ATSC display This insures proper connection generator configuration and receiver tuning 2 Push VP403C FORMAT pushbutton and select the 480i2...

Page 56: ...oltage levels occurring on the Y Cr and Cb inputs The snapshot voltages are quantified into 10 bit digital values representing levels from black to white luminance and color levels Cr Cb The clock sampling rates for the conversion is chosen to be multiples of the color sub carrier frequency For example the SDI 525i system samples the luminance at 13 5 MHz and the Cb and Cr at this rate or 6 75MHz ...

Page 57: ...e is 800 mV 10 peak to peak although far lower voltages may be measured at the receiver due to attenuation The interface signal carries a synchronizing signal sequence within the digital signal and is self clocking which permits a receiver to lock and recover the video The VideoPro VP403SH provides SDI or HDSDI through a rear panel BNC connector The SDI HDSDI output is enabled when the signal type...

Page 58: ...rmats and multiple HDSDI 720 or 1080i formats To output an SDI or HDSDI signal from the SH VideoPro 1 Connect a BNC cable to the VideoPro SDI HDSDI output and to the SDI HDSDI input of the device to be tested BNC to BNC cable Sencore 39G232 2 Power the VideoPro ON Push the SIGNAL TYPE pushbutton Push the large scroll down pushbutton to increment to the second signal type menu Press the pushbutton ...

Page 59: ...VP400 Series Video Pro Form7343A Operation Manual 60 NOTES ...

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