Extron electronic DA 12V/6V Dual EQ, DA 8V/4V Dual EQ Specifications, Parts, and Accessories

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Front Panel Features and Operation, cont’d

Adjusting for long cables

If you are using long cables, you need to adjust the Gain and EQ potentiometers (pots) until you have the best picture quality. Using an oscilloscope is recommended; however, you can make these adjustments without one. Both methods are described below.

Adjusting with an oscilloscope

1.Feed a grayscale signal from an Extron VTG 300/400 or other A/V test generator to the input of the DA AV EQ.

2.Remove the far end of the output cable from the display, and connect it to the oscilloscope with 75 ohm termination.

3.Adjust the composite video or Y Gain pot to achieve 0.7 Vp-p for the white bar of the test pattern. For the

S-video models, adjust the C gain pot to achieve 0.3 Vp-p of color burst level.

4.Adjust the EQ pot until no overshooting or round corners appear on the test pattern.

5.Repeat steps 1 through 4 for all other output pairs.

6.

Plug the far end of the cable back into the display device.

Adjusting without an oscilloscope

1.Feed a grayscale signal from an Extron VTG 300/400 or other A/V test generator to the input of the DA AV EQ.

2.Adjust the composite video or Y Gain pot until the picture from the display device appears to have the correct brightness and contrast.

3.Adjust the EQ pot until the picture appears sharp and without visible smearing.

4.

Repeat steps 1 through 3 for all other output pairs.

DA AV EQ Series

AAppendix A

Specifications, Parts, and Accessories

Specifications

Models

Included Parts

Optional Accessories

Cables

3-6 DA AV EQ Series • Front Panel Features and Operation

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Contents DA 8V/4V Dual EQ DA 12V/6V Dual EQPrecautions Extron’s WarrantyFCC Class a Notice Wiring the captive screw audio input connectors Wiring the captive screw audio output connectorsQuick Start Guide DA AV EQ Series Table of Contents Table of Contents, cont’d IntroductionDA AV EQ Series About this Manual FeaturesIntroduction About the DA AV EQ SeriesIntroduction, cont’d Installation and Rear PanelApplication diagrams Example of devices connected to a DA 6AV EQTabletop use Installation and Rear PanelMounting the DA AV EQ Series Rack mountingMounting a DA AV EQ on a 9.5 deep rack shelf Installation and Rear Panel, cont’dFurniture mounting Under-desk mounting the DA AV EQRear Panel Features and Cabling Through-desk mountingDA 8V/4V Dual EQ rear panel DA 6SV EQ rear panelDA 6SVA EQ rear panel DA 6A rear panelPassive Loop-Thru connector S-video DA 6SV EQ RCA plug diagramRemoving the top cover from the DA Front Panel Features and Operation ThreeFront Panel Features and Operation Front Panel FeaturesSettings for short cables Potentiometers for outputs 1 and 2 at unity gain settingsGain and EQ potentiometers for an output pair Specifications, Parts, and Accessories Front Panel Features and Operation, cont’dAdjusting for long cables Video input and loop-through Specifications, Parts, and AccessoriesVideo Video outputAudio input Specifications, Parts, and Accessories, cont’dAudio Audio outputOptional Accessories ModelsIncluded Parts Specifications, Parts, and Accessories, cont’d Cables Cable Part number
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