PC Scan Converter & TV Genlock/Overlay

  GT4500 PC Scan Converter & Video Genlock Overlay

This product has been discontinued.

The GT4500 accepts computer-generated video and converts it to standard NTSC or PAL TV formats. Computer-generated text and graphics can easily be superimposed over live images from a camera or other video sources. Composite and S-Video TV sources are supported. TV output is available in Composite, S-Video, and RGB formats. Numerous PC/Mac computer video input formats are supported (see tables). The "Plug and Display" GT4500 converts video entirely in hardware, making it software-independent. Use any convenient application program, such as QuickTimetm or PowerPointtm, or use computer programming tools to create live or static text and graphics overlays.

Key Features:

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Suggested Applications:

[Bullet] Character Generator [Bullet] Remote Video Inspection
[Bullet] Lecture/Presentation [Bullet] Home Automation
[Bullet] Video Titler [Bullet] Robotics
[Bullet] Kiosks [Bullet] MATV ~ Pay TV
[Bullet] CCTV Security & Surveillance [Bullet] Electronic Signs
[Bullet] Law Enforcement [Bullet] ATV ~ Amateur TV
[Bullet] Remotely Piloted Vehicles [Bullet] Race Cars
[Bullet] Message Boards [Bullet] Experiment/ Process Monitor
[Bullet] Information Display [Bullet] Gaming

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GT4500 Specifications

[Bullet] Physical:

7.8”(L) x 5.5”(W) x 1.3”(H). Weight is approximately 11.5oz (326g).

[Bullet] Power Supply:

5VDC nominal at 320mA operating, 220mA standby. Unit is furnished with cables to draw power from USB or keyboard (PS2 style) ports of host computer. IR remote hand unit is powered by two AAA or UM-4 cells.

[Bullet] Video I/O:

Computer video input is via standard VGA-style 15-pin high-density D series female connector. A "T-Bone" cable is provided, allowing computer video to pass through to the computer monitor while the GT4500 is in use. Baseband TV input is via an RCA jack for composite video, or a standard 4-pin mini-DIN connector for S-Video. Baseband TV output is via RCA jack for composite, 4-pin mini-DIN for S-Video, or 9-pin mini-DIN for RGB. RF input/output is not supported.

Rear panel view:

GT4500 rear panel

Supported television baseband formats:

Supported computer video input formats:

VGA display modes:

Pixels 720x400 640x480 800x600 1024x768 1152x864 1280x960 1280x1024 1600x1200
Vertical Rate (Hz) 70 60, 70, 72, 75, 85, 100, 120 56, 60, 70, 72, 75, 85, 100 60, 70, 72, 75 60, 70, 72, 75 60 60 60

Mac display modes:

Pixels 640x480 832x624 800x600 1024x768 1152x864
Vertical Rate (Hz) 60, 66, 72,75, 85, 100, 120 75 56, 60, 72, 75 60, 70, 75 60, 70

iMac display modes:

Pixels 640x480 800x600 1024x768
Vertical Rate (Hz) 117 95 75

[Bullet] Supplied Accessories:

[Bullet] Control functions:

[Bullet] Owner's Manual:

This link points to a large (5MB) PDF file that was created by scanning the printed manual. Document quality is not as high as we would like, but it will help to answer a lot of questions about product capabilities!

[Bullet] Notes:

The GT4500 is not manufactured by Decade Engineering. As a quality Taiwan import, we believe it complements our own products and offers excellent value to our customers.

Although computer video input formats up to 1600x1200 are "supported," the GT4500 does not improve native TV display performance. For best results, avoid using fine detail in computer-generated images, and employ the best available TV display technology. If low-budget or small-screen TV monitors must be used, we suggest limiting text overlays to 40 characters per line or less.

DeBoard is an inexpensive PC character generator program that looks like a good match for the GT4500. We haven't tried it.

Product specifications are subject to change without notice. Contact Decade Engineering to confirm current status if any specification is critical to your application.

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Prices and Ordering Information