Leader LT448 Overview

The LT 448 Multiformat Pattern Generator is designed to output analog component and composite signals applicable to the DTV systems. There is also a DVI-D output connector. This innovative generator includes a total of 29 digital television video signal formats conforming to Advanced Television Systems Committee (ATSC), and Digital Video Broadcast (DVB) Integrated Services Digital Broadcasting (ISDB), standards throughout the world. Component analog signals are output for 17 formats of DTV conforming to ISDB,ATSC, and DVB standards based on 1920 x 1080, 1280 x 720, 720 x 480, and 720 x 576 raster formats. The NTSC/PAL/SECAM composite output and VGA, used for a computer monitor, are provided. These 29 formats are suitable for production line applications of projectors, etc. Computer D-15 outputs are available in VGA, SVGA, XGA and SXGA. The test patterns, generated in the digital domain, include five types of color bars, raster, ramp, 10/15/32/64 stair steps, convergence, crosshatch, multiburst, character, small and normal windows, demodulation, monoscope,ANSI gray scale, checker and optional natural picture. Natural picture allows user to download custom bit maps into internal RAM.

Features

• 17 formats of component signals are provided for DTV conforming to ISDB,ATSC and DVB standards based on 1920 x 1080, 1280 x 720, 720 x 480, 720 x 576 formats. The NTSC/PAL/SECAM composite output and VGA output used for a computer monitor are provided. These 29 formats are suitable for production line applications of projectors.
• GBR / YPBPR Signal Output Two component signal formats (i.e., G, B, R/Y, PB, PR) can be selected.
• Sync Signal Output CS (tri-level or binary level),HD, and VD sync signals are output.
• Monoscope Pattern Monoscope pattern (i.e., 16:9 for HDTV, 4:3 for SDTV interlace, 16:9(S) for SDTV progressive) suitable for inspecting resolution is provided as standard for the format applicable to DTV.
• S Connector Provided to output separate Y/C signals, this instrument is suitable for adjusting and inspecting equipment with an S connector.The S connector identifies S1 and S2 signals.
• D Connector The D5 output connector conforms to JEITA CP-4120 standards is provided as standard.
• Preset/Recall Function Allows up to 100 setting conditions of format and patterns, which can be stored and recalled.
• RS-232C Interface Allows the instrument to be remotely controlled by using a personal computer.
• Remote Controlling Address Can be recalled, incremented or decremented by grounding the remote connector pin.
• Signal Generated in a Digital Format The digital signal generator produces highly stable and accurate signals (except audio signals)
• DVI-D Conforms to DDWG standards is provided as standard.
• NATURAL PICTURE PATTERN

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