Meridian Audio LD100/LD100U manual System Description

SYSTEM DESCRIPTION

The Faroudja System LD100 digital scan converter is a precision video instrument used to convert NTSC Composite, Y/C, or 525 line RGB or Component interlaced signals into 525 line progres- sive outputs. Using the LD100 digital scan converter will produce pictures with more details, remove unwanted picture artifacts and, when used with pro- jection systems, produce pictures of exceptional quality, giving a “cinema-like” feeling.

Front panel features include Power, Input Select (Video, Y/C, RGB and Component), Brightness, Contrast, Color, Auto-Tint, Noise Reduction, Detail, AGC and Freeze. Input switch settings are memo- rized when the power is removed from the unit. This allows the LD100 to be interfaced into a system without the need to select the input when the sys- tem is powered up. During power up, the AGC switch is selected in the On mode with the Freeze switch selected OFF. The remaining controls may be left in factory preset or manually set by pulling out and rotating the control until the desired level is established.

Inputs to the LD100 include: Composite Video, Y/C (S-VHS), RGB and Component (Y,R-Y,B-Y). The Video input may be connected by either a BNC con- nection or a video RCA type connection. These inputs are looped internally so that the signal may be used by other devices. A selectable 75 Ohm ter- minator switch is provided and should be in the ON

position if the input loop is not used. The Y/C input uses a standard 4 pin S-VHS connector. This input is not available for a looped operation and is termi- nated internally. The RGB and Component inputs use BNC connectors. As with the video input, these inputs are loopable to other devices. Selectable 75 Ohm terminations are provided. If the looped inputs are used, these cables should be kept short, (under 6' in length) or a video distribution amplifier should be used. This allows the LD100 to keep the highest signal bandwidth possible without having the high frequency being attenuated in a long cable.

Output from the LD100 is provided on six BNC con- nectors as well as one 15 pin ‘D’ VGA connector. The BNC outputs provided are Red, Green, Blue, Horizontal Sync, Vertical Sync and Composite Sync. Interface to monitors/projectors can be of a 4 or 5 wire connection. Note: 4 wire, meaning Red, Green, Blue and Composite Sync or 5 wire, meaning Red, Green, Blue, Horizontal Sync and Vertical Sync. There is no sync present on the Green output. The LD100 is capable of driving a monitor/projector using the BNC outputs as well as a VGA monitor using the 15 pin ‘D’ connector, at the same time.

The LD100 features a remote control interface that will allow control of all line doubler functions. The remote control uses a 25 pin female ‘D’ connector located on the rear panel. See appendix A for fur- ther information.

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