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Related Manuals for GME HG139
Summary of Contents for GME HG139
- Page 1 User's Manual Rev 1.1...
- Page 2 TEST INSTRUMENT SAFETY GUIDELINES WARNING An electrical shock of over 10 milliamps of current to pass through the heart will stop most human heartbeats. Voltage as low as 35 volts dc or ac rms should be considered dangerous and hazardous since it can produce a lethal current under certain conditions.
- Page 3 GME Technology warrants to the original purchaser that this product and the component parts thereof, will be free from defects in workmanship and materials for a period of one years from the data of purchase. GME Technology will, without charge, repair or replace, at its’ option, defective product or component parts. Returned product must be accompanied by proof of the purchase date in the form a sales receipt.
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Page 4: Table Of Contents
DTV test equipment stayed relatively expensive, often in the range of thousands of dollars, the effort of getting into DTV for many individuals is highly discouraged. The HG139 is designed to accommodate the need for an affordable high quality tool for the calibration and testing of digital television. -
Page 5: Introduction
The HG139 delivers the quality and functionality you would expect from an expensive high end HDTV pattern generator at a very affordable price. With its easy to understand interface, the HG139 is designed to meet the need of people from all levels ranging from novice to video professionals. -
Page 6: Understanding The Front Panel
These three BNC connectors are labeled Y, Pb, and Pr. With 1080i, 720p, or 480p mode on the HG139 selected, using BNC cables, connect the three BNC connectors to the TV’s respective Y, Pb, and Pr component video connectors to output the video signal to the TV. -
Page 7: Basic Operation
Basic Operation 1. a: Connect the Y, Pb, and Pr connectors on the HG139 to the HDTV Y, Pb, and Pr component video inputs respectively. The Y is the luminance signal, and Pb and Pr are the chrominance (color) signals. The Y signal will drive a 1V peak-to-peak signal into a 75-ohm load, and the Pb and Pr signals will drive 0.7V peak-to-peak signals into 75-ohm loads. -
Page 8: Video Patterns And Applications
Video Patterns and Applications COLOR BARS CROSS HATCH STAIRCASE NEEDLE MULTIBURST PLUGE CHECKER RASTER (White) RASTER (Yellow) RASTER (Cyan) RASTER (Green) RASTER (Magenta) RASTER (Red) RASTER (Blue) RASTER (Black) OVERSCAN-BOUNCE OVERSCAN-BOUNCE www.gmetechnology.com... - Page 9 COLOR BARS Seven equal width vertical color bars are displayed at 75% amplitude, 100% saturation in the order from left to right: White, Yellow, Cyan, Green, Magenta, Red, and Blue. The COLOR BARS video pattern serves as the fundamental pattern used for most testing, troubleshooting and adjustments in video equipment.
- Page 10 STAIRCASE The STAIRCASE pattern displays equal-width vertical bar steps of increasing luminance from left to right. This pattern is useful in checking amplifier linearity. The increment of amplitude from one step to the next should be equal. Non-equal steps represent non-linear distortion. Typical luminance nonlinear distortions will result in a loss of grey-scale distinctions, which means that detail is loss.
- Page 11 OVERSCAN-BOUNCE. The Overscan-Bounce pattern consists of 4 horizontal lines on the top and bottom edge of the screen and 4 vertical lines at the left and right edge of the screen. These lines mark 2.5%, 5%, 7.5%, and 10% of the width and height of the screen. The background of the screen alternates between black and white.
- Page 12 PLUGE 0/-5 The PLUGE (stands for Picture Line-Up Generation Equipment) pattern is divided into two halves. The left half consists of 2 vertical stripes against a black background, i.e. 7.5 IRE for NTSC and 0 IRE for the other patterns. The left stripe is fixed at a brightness level slightly whiter than black (12.5 IRE for NTSC and 5 IRE for the other video formats).
- Page 13 NEEDLE The NEEDLE pattern is symmetrically divided into top half and bottom half. The top half has black background with white vertical needle pulse lines and the bottom half has white background with black vertical needle pulse lines. The width of the vertical line should remain constant as it transitions between white and black.
- Page 14 CHECKER The CHECKER pattern displays alternating black and white boxes as in a checker board. This pattern is useful in checking the high voltage regulation of CRT power supply circuits. Poor regulation results in trapezoidal looking pattern. For CRT type monitors with insufficient power supply regulation can result in the corners of each box do not touch each other as they should.
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Page 15: Specifications
Specifications 1920 x 1080 30i Video Modes 1280 x 720 60p 720 x 480 60p NTSC (luminance only) COLOR BARS Video Patterns CROSS HATCH STAIRCASE MULTIBURST OVERSCAN-BOUNCE PLUGE NEEDLE CHECKER RASTER Output impedance: 75Ω Y output 1 Vp-p into 75Ω Output impedance: 75Ω... -
Page 16: Gme Product Information
WWW.GMETechnology.COM For product updates and information CHECK OUT THESE OTHER TEST EQUIPMENT AVAILABLE FROM GME GME offers many different types of electronic test equipment to suit your needs. Here are some of the test equipment products we offer. Model Description... -
Page 17: Notes
Notes www.gmetechnology.com... - Page 18 GME Technology 380 S. East End Ave. #H Pomona, CA 91766 TEL: 909-865-1998 FAX: 909-865-2793 www.gmetechnology.com...