Magenta NEC 600 setup guide Problem Solution

Page 11

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Problem:

Green shift” or “green washout” on multimedia signals.

Solution:

The standard video/serial model is designed to function with DC

 

 

coupled signals in which the black level is referenced to 0 volts.

 

 

Nearly all VGA cards function this way.

 

 

Some media servers, however, provide AC coupled signals and

 

 

can cause a green color shift in the video. This is a result of the

 

 

sync clamping on the red and blue channels of the video/serial

 

 

model.

 

 

For five-component (RGB/H&V) AC coupled video, the

 

 

MultiView CAT5 XRTx Universal transmitter has been designed

 

 

with full DC restoration capability. This problem is easily solved

 

 

via a simple switch setting in the XRTx Transmitter. Please refer to

 

 

the XRTx Transmitter user manual.

Problem:

Image has purple/blue tint

Solution:

Display gain may need adjustment. Older displays may have an

 

 

incorrect gain adjustment setting. This requires using the remote to

 

 

access the “expert mode” . Please contact NEC technical support or

 

 

Magenta Research for assistance in this.

 

 

Displays purchased after May 2009 should not require this.

Problem:

Notes on Daisy Chaining:

Solution:

When daisy chaining, the maximum cable distance is not increased

 

 

beyond the rated distance of the receiver used. For example, an

 

 

AK600 can only daisy chain within 600 ft of the transmitter.

 

 

It is possible to daisy chain out of a short range receiver into a longer

 

 

range receiver to increase the range. For example, over 600 ft an

 

 

AK600 can be daisy chained into an AK1200 which allows for daisy

 

 

chaining to 1,200 ft.

 

 

When using NEC600 SAP units, a maximum of 10 units may be

 

 

daisy chained within the rated cable length of the receiver if

 

 

using standard CAT5/6 or a maximum of 7 units may be daisy

 

 

chained within the rated cable length of the receiver if using

 

 

skew-free cable.

 

 

Note that if SA/SAP units are used for video only and the SA/

 

 

SAP option is not in use, then you may daisy chain to 12 units.

 

 

 

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Contents Magenta Research MultiViewMagenta Multiview Series Contents Specifications Compatible Cabling IntroductionOverview Making the Connections Setup and InstallationCabling Considerations Setup & Installation Cable Distance Compensation Settings Video AdjustmentImage Adjustment Utility-Skew Skew Compensation SettingsSolution TroubleshootingCommon Problems ProblemProblem Solution Table A-1. T568B CAT5 pinout Appendix A. Cabling PinoutsAppendix B. Setting Sync Mode Dec Hex Appendix C. SAP Addressing5sec Appendix D. Rotary Knob MenuMagenta Research