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Table of Contents
Summary of Contents for Sign Video Proc Amp
- Page 1 PROC AMP (Video Processing Amplifier) Instruction manual PAMAN-19.PPP...
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Page 2: Table Of Contents
CONTENTS Features ................... Control Functions ................Hook up ................... Using the PROC AMP ..............About monitors ..............Testing ................How to use the meter ............Setting the luminance gain & black controls ....... Boosting dark scenes ............Setting the hue & saturation controls ........ -
Page 3: Features
FEATURES The PROC AMP is a powerful, easy to use tool for the adjustment of video and chroma levels without damaging the signal in any way. To this end, the PROC AMP has the following features: • The original sync and blanking are passed untouched. -
Page 4: Control Functions
ROTARY CONTROLS POWER luminance black Push in to apply power to the PROC AMP. When Shifts the entire visible video signal either brighter off, no power is consumed and no video is passed or darker in order to set the blacks at the desired to the output. -
Page 5: Hook Up
CONNECTIONS Occasionally, when a new piece of equipment is 5. Plug the PROC AMP power supply into a wall added to a system, something is moved or dis- outlet . Then, plug the power supply cord into the connected and the new equipment is blamed for PROC AMP’s “6-9 v ac”... -
Page 6: Using The Proc Amp
5. Press the MONO button. The color should disappear giving a monochrome (black & white) picture. Some monitors may give wildly off colors due to excessive “color killer” threshold sensitivity. These usu- ally disappear when the PROC AMP chroma saturation control is turned fully counterclockwise. -
Page 7: How To Use The Meter
Video inputs and outputs of most equipment, in- blacks are being clipped at blanking or 0 IRE. The cluding this PROC AMP, are nominally 1 volt (1v) next 3 LEDs, marked “5, 7.5 and 10”, indicate the peak to peak (p-p) to a 75Ω transmission line. For... -
Page 8: Boosting Dark Scenes
SETTING CHROMA SETTING LUMINANCE Gain Method Adjust the luminance gain so that, for normal The chroma controls are best set by eye on a scenes, the video level does not exceed 100%. monitor that is known to be accurate. Even TV This occurs when the 100% LED lights some- stations do this by eye since a vector scope is of times, and the CLIP LED NEVER lights. - Page 9 USING THE PUSH BUTTON SWITCHES UNITY MONO UNITY is used to set the PROC AMP so that it The MONO mode suppresses the color burst so does not affect the video signal. Its output is that downstream TVs and VCRs will switch to the equal to its input.
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Page 10: Technical Notes
2. Video clamp. This jumper deactivates the video clamp during the entire vertical blanking period. The PROC AMP is shipped with this jumper OPEN. If the shorting plug is moved so as to connect the two pins, the video clamp will be deactivated during vertical blanking. This can help pass severely de- graded video and some types of nonstandard video. -
Page 11: Specifications
SPECIFICATIONS General Input level 1v p-p nominal to 75Ω . Works with 0.5-1.5 v p-p. Output level Normal mode: Same voltage as input ±.5 dB. to 75Ω SYNC shaped mode: 1v p-p for 100% meter reading Distortion: Composite in/out: Differential gain: 1% max. Differential phase: 1°...
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