User`s Manual - TEquipment.NET
Contents
1. Users Manual Rev 1 2 eves M 0 9V DC 4 US PROGRESSIVE li INTERLACE COLOR BARS CROSS HATCH DOT STAIR CASE VIDEO CIRCLE CENTER CROSS WINDOW RASTER A MAAD PO Z up er Pi nt SPR hah es rac VOLI ER PE 4 LAEL A AKT T ER EA PERLE aP WIE Jae A EAST A ip TERR RE Lees LE LOLS OPN RAA 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 Be sure to observe following safety precautions 1 Do not expose high voltage needlessly in the eguipment under test Remove housings and covers only when necessary Turn off equipment while making test connections in high voltage circuits Discharge high voltage capacitors after removing power If possible familiarize yourself with the equipment being tested and the location of its high voltage points However remember that high voltage may appear at unexpected points in defective equipment Use an insulated floor material or a large insulated floor mat to stand on and an insulated work surface on which to place equipment make certain such surfaces are not damp or wet When using a probe touch only the insulated portion Never2. easy to use handheld video pattern generator that generates a wide variety of test patterns for comprehensive testing calibration and repair of NTSC television and other video equipments The PG 28 delivers the quality and functionality you would expect from an expensive high end NTSC pattern generator at a very affordable price With its easy to understand interface the PG 28 is designed to meet the need of people from all levels ranging from novice to video professionals The PG 28 features a wide selection of popular video patterns including Color Bars Crosshatch Dot Staircase Circle Center Cross Window and Raster for accurate and comprehensive TV troubleshooting and testing It also supports both progressive and interlace scanning system The PG 28 features composite video and S video connectors for video output and 1kHz audio tone for audio troubleshooting Item Checklist v One PG 28 NTSC pattern generator v One User s Manual Features 8 commonly used video test patterns including COLOR BARS CROSS HATCH DOT STAIRCASE CIRCLE CENTER CROSS WINDOW and RASTER choose from White Yellow Cyan Green Magenta Red Blue and Black Single push button selectable patterns with hold down reverse Selectable progressive and interlace scanning system Composite video and S Video output 1kHz audio test tone for audio troubleshooting AC adaptor power source or standard 9V battery operation Low battery indicator Ideal for on
3. for audio tone 8 S Video output Connect this to TV s s video input for video signal 9 Composite Video Output RCA connector Connect this to TV s composite video input for video signal www gmetechnology com 2 Basic Operation 1 Choose the scanning system you prefer using the Scanning Format selector 2 Connect the appropriate video output S video and Composite video and audio output to the corresponding inputs of the eguipment under test 3 Slide the power switch to turn on the PG 28 4 Push the video pattern button to step to the desire video pattern for display Available video patterns include COLOR BARS CROSS HATCH DOT STAIRCASE CIRCLE CENTER CROSS WINDOW and RASTER choose from White Yellow Cyan Green Magenta Red Blue and Black NOTE Holding down the video pattern button will display previous patterns in reverse order until COLOR BARS pattern is reached www gmetechnology com 3 Video Patterns and Applications COLOR BARS DOT STAIRCASE CIRCLE CENTER CROSS Eu WINDOW RASTER White RASTER Yellow RASTER Cyan RASTER Green RASTER Magenta A RASTER Red RASTER Blue RASTER Black www gmetechnology com 4 COLOR BARS Eight equal width vertical color bars are displayed at 100 amplitude 100 saturation in the order from left to right White Yellow Cyan Green Magenta Red Blue and Black The COLOR BARS video pattern serves as the fundamental pattern us
4. one vertical line that are perfectly straight Use this pattern to determine your video equipment s alignment for a 4 3 aspect ratio display There should be a perfect circle centered on your display with a horizontal line and a vertical line intersecting at the center of the screen This test can be used to test a misaligned deflection coil as well If the monitor displays the test pattern off to one side this would indicate an improper centering adjustment Titled lines or squeezing of the circle indicate problems with the display device Check for tilted line to determine the areas of the monitor where the display is not consistent www gmetechnology com 6 CENTER CROSS The CENTER CROSS pattern should intersect at the center of the screen and the lines should not be tilted If the centering is not exact adjust the display device with the centering control Improper centering can be due to a deflection circuit fault If the display is tilted repositioning of the deflection yoke may correct the problem This pattern also provides a good general check of vertical and horizontal sync WINDOW The WINDOW pattern displays a centered white window on black background Use this pattern to measure the chromaticity of the display device This pattern is preferred over the full field white raster because the WINDOW pattern more closely duplicates the APL average picture level of typical program material and does not unnaturally stress display
5. output 0 8Vp p into 750 aaa kHz audio tone 9V AC adaptor 100mA 5 5mmx2 1mm center positive 5 7 H x 3 8 W x 1 5 D Power one standard 9V battery OR 0 8 Ib www gmetechnology com WWW GMETechnology COM For product updates and information CHECK OUT THESE OTHER TEST EOUIPMENT 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 HG139 HDTV Pattern Generator SG 10 10 MHz DDS Signal Generator 236 In Circuit ESR amp DCR Capacitor Tester PG 16A NTSC Monitor Tester Handheld Model PG 68 NTSC amp Monitor Tester Benchtop Model PG 38 NTSC Pattern Generator MT 160 Computer Monitor Tester LC200 Digital LC Meter C350 Capacitance Meter Other products such as digital analog panel meters step motor drivers are also available Please visit our website at www gmetechnology com for complete detail www gmetechnology com 10 Notes www gmetechnology com 11 GME Technology 380 S East End Ave H Pomona CA 91766 TEL 909 865 1998 FAX 909 865 2793 www gmetechnology com
6. apezoid correction adjust the TV s display control so that the pattern s edges are parallel to the edges of the display screen For pincushion correction the horizontal and vertical lines should be adjusted to be straight The DOT pattern is preferred for checking static convergence Static convergence is always performed before and after purity adjustments www gmetechnology com J STAIRCASE The STAIRCASE pattern displays six egual 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 Each of the vertical bars should have distinctive brightness level The display is too dark when the black vertical bars blend together The display is too bright when the white vertical bars blend together Adjust the display cutoff bias controls and drive gain controls so each vertical bar has distinctive brightness level This pattern is also useful for checking and adjusting the grayscale performance of a video device This pattern is seen as a primary color red green or blue tint on display device with poor grayscale performance CIRCLE This pattern shows a 4 3 aspect ratio circle that 1s perfectly round and one horizontal line and
7. circuits For gray scale tracking the WINDOW can be set to low luminance for adjusting cutoff controls and high luminance for adjusting drive controls www gmetechnology com 7 RASTER mu The RASTER patterns consist of 8 full field color patterns at 100 amplitude The colors displayed are White Yellow Cyan Green Magenta Red Blue and Black RASTER patterns are useful for checking color purity and uniformity Color purity problems are often caused by the magnetization of some parts inside a CRT display device This often results in areas of color on the white raster pattern Use the three primary color raster patterns Red Green and Blue to check for missing and defective pixels on a LCD monitor Missing and defective pixels are common problems on this type of display devices The Red Green and Blue raster patterns are valuable for adjusting the three separate guns that generate these three primary colors inside a display monitor A full field display of each of the eight individual color RASTER patterns also simplifies the analysis of hue and saturation problems www gmetechnology com 8 Specifications Video Patterns COLOR BARS stane ZZ Z a u CROSS ne En EKI jt White Yellow HASTEN je Yelow Gyan Greer Magenta ed Bi ard Black Green Magenta Red Blue and Black ne System a and moneo am Poges u composite Video 1 0Vp p into oa VV output 0 6Vp p into 750 Luminance plus aaa aaa a aa
8. ed for most testing troubleshooting and adjustments in video equipment Use this test pattern to check and test the video device s ability to produce fully saturated primary and secondary colors It is often used as the reference for color adjustment and compensation When troubleshooting analysis of the colors bars pattern helps television service personnel to pinpoint color related problem to specific circuits This pattern can also be use as a reference for troubleshooting color amplifier or color demodulator problems inside the display device CROSS HATCH amp DOT The CROSS HATCH pattern displays a series of horizontal and vertical straight white lines that forms a grid of 16 x 12 squares of the same size This pattern is used to check and adjust dynamic convergence of the display Observe the horizontal and vertical lines to detect color fringing resulting from misconvergence An example that the display is misconverged is when the white lines become separated Red Green and Blue lines Adjust the display s RGB convergence control to align the colors to overlap so the horizontal and vertical lines appear as white lines This pattern can also provide a convenient reference for making vertical and horizontal linearity adjustments Each square should be the same size CROSS HATCH pattern is also useful for checking pincushion bow distortion and display geometry such as picture centering size and trapezoid keystone correction For tr
9. ing a GME product for servicing and repair Turn around time for repair is normally within five 5 working days excluding shipping time RMA Procedure Before sending your GME product in for service be sure to contact GME Technology first to obtain a RMA number If your product is still under warranty please send in the product along with a copy of the receipt showing the date when the product was purchased If the warranty has already expired please ask for the repair cost when you contact GME Technology for the RMA number and include a check or money order for the repair cost when you send in the product Please make check payable to GME Technology You may send your GME product to our service amp repair department at GME Technology ATTN Service amp Repair Department 380 S East End Ave H Pomona CA 91766 Be sure to include a note showing your RMA number your name telephone number return address and a description of the problem with the product For the most recent support information please visit GME Technology website at www gmetechnology com support Table of Contents Page ISTOAUCHON ee l Mei heck dk aaa Aa a ee l aa A l Understandme the Front Pane len ea 2 DOSE DOO Na a 3 Video Patterns and AADDIICA ON a air 4 8 SPE CH ICANONS a AA a ele E ej eine oe djal ke 9 GME Produ EMONA on nee en 10 Introduction Thank you for purchasing the PG 28 NTSC Pattern Generator This is an
10. the bench and in the field testing Easy to use lightweight and portable 9 0 0 0 www gmetechnology com 1 Understanding the Front Panel O 1 Power ON OFF switch G This Power ON OFF switch is on the left gt side of the unit Slide the switch upward A 4 to turn the unit on and downward to turn the unit off AT VDC y 8 OW eels SR Ny 2 Power ON OFF LED PROGRESSIVE lll INTERLACE Power is ON when the LED turns on and power is OFF when the LED is off COLOR 4 Toa 3 Battery Low LED I HATCH S Gross 4 When the unit is operating on a standard 9V battery and the voltage on the battery has drop down to around 5V this green STAIR i LED will turn on indicating the voltage zive on the battery is low DOT WINDOW RASTER 3 4 9V AC adaptor input The user may connect a 9V 100mA 5 5mm x 2 1mm center positive AC adaptor not included to power the unit VIDEO PATTERN 5 Scanning Format switch Use this switch to choose between PROGRESSIVE or INTERLACE scanning system 6 Video Pattern button Use this button to cycle through one of the following video patterns COLOR BARS CROSS HATCH DOT STAIRCASE CIRCLE CENTER CROSS WINDOW RASTER NOTE Holding down this button will display previous patterns in reverse order until COLOR BARS pattern 15 reached 7 Audio Output RCA connector A 1kHz audio test tone is output thru this connector Connect this to the TV s audio input
11. touch the exposed tip portion When testing ac powered equipment remember that ac line voltage is usually present on some power input circuits such as the on off switch fuses power transformer etc any time the equipment is connected to an ac outlet even if the equipment is turned off Limited One Year Warranty 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 Term and Conditions e The warranty period is based upon the invoice date of the original purchase by the end user e Warranty only applies to defects in materials and or workmanship which occur during normal use e Warranty does not apply to those products that are damaged due to misuse abuse negligence or modification e Warranty does not extend to any damage that occurs in shipment or due to natural phenomenon i e lightning or line surges e Warranty will be voided if the original serial number on the product is removed by accident or intentionally This warranty gives you specific rights and you may have other rights which vary from state to state Service amp Repair The following are procedure for return
Download Pdf Manuals
Related Search