Sencore VP300 manuel d'utilisation

VP300 VideoPro Multimedia Video Generator Operation Manual (Firmware version 2.00) SENCORE, INC. 3200 Sencore Drive, Sioux Falls, SD 57107[...]

Page 1 Table of Contents Specifications ................................................................................................................2 Battery Information and Installation .............................................................................3 Making Connections .............................................................[...]

Page 2 Specifications Video Formats: Storage: 100 Total Factory Default Formats: HDTV – 720p59, 720p60, 1080i25, 1080i29, 1080i30, 1080p50, 1080p59, 1080p60 SDTV – 480i29, 480i30, 480p59, 480p60 VESA/Mac – 38 standard formats from 640x350 to 1920x1440 NTSC – standard NTSC, luminance only NTSC PAL – standard PALm, luminance only PALm Patte[...]

Page 3 Preparation for first time use Battery Types Used The Model VP300 generator is supplied with four (4) internal size AA rechargeable Nickel Metal Hydride (NiMH) cells. These 1500 mA/H rated cells will operate the generator for about 8 hours on a full charge. They can normally be recharged about 1000 times before needing replacement. No other [...]

Page 4 Making Connections[...]

Page 5 Front Panel Controls and Indicators LCD Window The LCD window either displays messages to the operator or shows a selection menu. The figure shows an example of a selection menu. Controls ON/OFF Toggle generator power on and off SIGNAL TYPE Video signal types menu See page 6 FORMAT Video formats menu See page 6 PATTERN Video patterns menu Se[...]

Page 6 Signal Type, Format, and Pattern Menus Signal Type Menu Select one of the video types shown, then press the FORMAT button to display a menu list of matching formats. The format list can be scrolled to select formats of other video types. NOTES: VESA/Mac = Red, Green, Blue component color video per VESA and Apple standards. (VGA connector use[...]

Page 7 Pattern Description and Usage SMPTE Bar Pattern Description : The upper two-thirds of the pattern consists of seven equal-width vertical bars, with 75% white (gray) at left, followed by three primary and three seconday colors. Color bars are at 100% saturation with 75% amplitude. Just below these bars is a section of short bars containing th[...]

Page 8 at black (7.5 IRE for NTSC, 0 IRE for other formats) and has a five-step gray scale positioned on it. The second rectangular zone from the center alternates between two light levels, black and slightly blacker than black (7.5/0 IRE for NTSC, 0/-4 IRE for other formats). The third rectangular zone from the center is fixed at a light level sli[...]

Page 9 contrast/picture control is adjusted for a higher white level than the display device is capable of producing properly, one of two distortion effects will be observed; blooming or raster distortion. Blooming is especially prevalant in CRT displays and results in light from very bright pixels (phosphors) spilling over to adjacent pixels. This[...]

Page 10 Pattern Description : Eleven equal-width horizontal bars step from 100 IRE white at the top of the pattern to black at the bottom (7.5 IRE for NTSC, 0 IRE for all other formats), forming a horizontal staircase. Pattern Usage : Useful for visually checking gray-scale tracking performance of a display, especially a projector with red and blue[...]

Page 11 overscan. 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 centering controls should be adjusted to center the pattern on[...]

Page 12 Window1, Window2 Pattern Description : Centered white window on black background. Luminance levels of Window1 and Window2 are independently adjustable from 100 IRE to 0 IRE in either 5 IRE or 1 IRE steps. Each window pattern includes pluge level bars at +4% and –4% to the left of the white window. Pattern Usage : Use the white window to m[...]

Page 13 Color Bar Pattern Description : Seven equal-width vertical bars with 75% white (gray) at left, followed by three primary and three seconday colors. Color bars are at 100% saturation with 75% amplitude. Individual colors can be gated on or off (in the Gating menu) to view only the red, green, or blue components of the pattern. Pattern Usage [...]

Page 14 Focus Pattern Description : Consists of capital letter “E”s and “M”s alternating across the screen. Sometimes refered to as a MEME pattern. The closely spaced elements of these letters makes it easy to judge the effects of focus adjustments. Pattern Usage : Used as a reference signal for viewing the effects of focus adjustments acro[...]

Page 15 Regulate Pattern Description : A single pixel white border surrounds an interior picture area which alternates between full white and full black. Pattern Usage : Checks the regulation of CRT high-voltage and deflection power supply circuits. The pattern alternately produces maximum and minimum CRT beam current. Ideally, these current extrem[...]

Page 16 Pattern Description : Pattern is an all white raster with two centered three-step gray scales. The top gray scale steps are at 10%, 5%, and 0% while levels. The bottom gray scale steps are at 90%, 95%, and 100% while levels (from left to right). Pattern Usage : This pattern can be used to check a display device’s ability to hold proper bl[...]

Page 17 Gating and Test Menus Gating Menu * Color gating is available on all patterns except Ramp for the Composite, S-Video, and RGB outputs. Color gating is not available on the YpbPr (component) output. Test Menu Select special test operating functions. Select A nalog C omposite S ync Select D igital C omposite S ync Select D igital S eparate S [...]

Page 18 Sequence and Burn-In Sub-Menus Sequence Sub-Menu Press the +/- buttons to manually step through a sequence of defined tests. Each step loads a given video format and test image. Menu buttons permit the operator to gate video color information, change sync types and turn all signal outputs on and off. The firmware includes a sample test sequ[...]

Page 19 Freq Shift, Audio, and DDC Step Sub-Menus Freq Shift Sub-Menu Press the +/- buttons to increase and decrease the horizontal scanning frequency of the current video format +/- 10% in 2% increments. The ^ pointer indicates the percent deviation and the bottom number shows the actual frequency. Audio Sub-Menu Audio menu buttons independently t[...]

Page 20 Color Pro Sub-Menu ColorPro Sub-Menu Uses the ColorPro probe to measure the chromaticity and luminance (brightness) of the test CRT display. The ColorPro probe connects directly to the serial port on the generator. Chromaticity is shown as C.I.E. x, y coordinates and the luminance (Y) can be shown in units of either Foot-Lamberts or nits. T[...]

Page 21 Learn Formats Function and Options Menu Learn Formats Function Reads back EDID format data from a VESA® DDC-compliant display connected to the generator's VGA output. A list of standard VESA video formats supported by the monitor is extracted from the EDID data and compared against all of the VESA formats in the generator's built[...]

Page 22 Appendix A - Calibrating TV User Controls The improved quality of today’s large screen TVs presents a challenge to the installation technician. Even the slightest misadjustment of the TV user controls can cause the picture quality to be significantly less than it could be. This section describes how to properly adjust the five major user [...]

Page 23 Note: The environment surrounding a TV affects the proper setting of the user controls. Room lighting should be adjusted to the preferred level for movie viewing before the TV is calibrated. When the Pluge pattern is selected with the NTSC format, the VP300 automatically displays an NTSC pluge pattern with a 7.5 IRE black setup level. When [...]

Page 24 Fig. 2 – The Needle pattern is used to properly adjust the television sharpness control. While adjusting the sharpness control, watch the left and right edges of the needle pulse lines. If the sharpness is set too high, a faint duplicate line will be seen beside the original line. This ghosting affect is unwanted picture distortion. If th[...]

Page 25 Fig 3: The Needle Pulse pattern is used to adjust the television contrast control for proper white level. The VP300 Needle Pulse pattern works also very well for adjusting the contrast control for maximum light level while minimizing raster distortion or blooming. Adjust the contrast control until the top white bar is the same width as the [...]

Page 26 bars. These bars should appear very colorful without any signs of blooming into the adjacent bars. Fig 4: The SMPTE bar pattern blue and white bars are used to calibrate the television color control. Tint Control Adjust the tint control by comparing the intensity of the cyan and magenta color bars through a blue filter. These bars are indic[...]

Page 27 Fig 5: The SMPTE bar pattern cyan and magenta bars are used to calibrate the television tint control. Remember that the user controls should be calibrated with the room lighting adjusted to the preferred level for movie viewing. These controls should also be the final adjustments that are made to the TV. If the TV white balance is calibrate[...]

Page 28 Appendix B - Video Display White Balance Adjustment Following is a general white balance (gray scale, color temperature) video display adjustment procedure that will produce a properly adjusted display in most cases. If a service manual is available for the display, however, use the manufacturer’s adjustment procedure. White Balance Adjus[...]

Page 29 5. Select the VP300 Window2 pattern and adjust the pattern level for 80-100 IRE. Most direct- view displays will track well up to 100 IRE, whereas many projection displays produce a better compromise tracking when adjusted at a lower IRE level. Fig. 2 - VP300 100 IRE Window pattern 6. Adjust the drive/gain controls to obtain color balance a[...]

Page 30 3200 Sencore Drive Sioux Falls, SD 57107 Call 1-800-SENCORE (736-2673) Innovatively designed with your time in mind[...]