Remote User Skew Adjustment - ADDER AdderView CATx AVX4016 User Manual

Remote user skew adjustment

The.category.5,.5e.and.6.cabling.supported.by.the.AdderView.CATx.consists.of.
four.pairs.of.wires.per.cable..Three.of.these.pairs.are.used.to.convey.red,.green.
and.blue.video.signals.to.the.remote.video.monitor..Due.to.the.slight.difference.in.
twist.rate.between.these.three.pairs,.the.
red,.green.and.blue.video.signals.may.not.
arrive.at.precisely.the.same.time..This.is.
visible.as.separate.colour.shadows.on.high.
contrast.screen.images.and.is.particularly.
apparent.when.using.higher.screen.
resolutions.and.some.types.of.category.5e.
cables.
To.alleviate.this.situation,.the.Adder.
X100AS/R.and.X200AS/R.modules.
provide.internal.skew.adjustment.that.
can.help.to.rectify.the.situation..The.
skew.adjustment.works.by.delaying.or.
advancing.the.timing.of.any.of.the.red,.
green.or.blue.colour.signals.so.that.they.
are.all.delivered.to.the.monitor.at.precisely.the.same.time..For.best.results,.the.
"skew".program.supplied.on.the.disk.or.downloadable.from.www.adder.com.
or.www.adder.info.is.the.most.accurate.way.of.setting.skew.as.the.red,.green.
and.blue.lines.are.rendered.exactly.on.the.screen.as.single.pixel.wide.lines..The.
skew.bmp.test.pattern.can.also.be.used.but.it.is.less.accurate..Alternatively,.you.
can.create.your.own.skew.pattern.using.a.standard.image.creation.package,.as.
detailed.opposite.
1 2 3 4 5 6 7 8
8 8
Data signal
7 7
6 6 Red
3 3
video signal
5 5 Green
4 4
video signal
2 2 Blue
1 1
video signal
To use skew adjustment
1. Display.a.skew.pattern.on.the.appropriate.computer..You.can.either.use.the.
supplied.skew.pattern.or.create.your.own:
Using the supplied skew pattern
i. Insert.the.supplied.Adder.Installation.CD-ROM.into.the.CD.player.of.the.
computer.
ii. Within.Windows,.use.the.My Computer.
option.(usually.available.as.a.desktop.icon.
or.within.the.Start.menu).to.view.the.
contents.of.the.CD-ROM..Double-click.
the.Skew.entry.to.display.the.standard.
test.pattern..If.necessary,.maximise.the.
application.window.so.that.the.image.fills.
the.screen......
. The.screen.will.show.a.series.of.fine.red,.
green.and.blue.crosses.which.should.all.be.
in.line,.vertically.and.horizontally..Skew.affects.the.horizontal.placement.of.
the.colours.and.using.this.pattern.it.is.much.easier.to.discover.which,.if.any,.
colours.are.being.adversely.affected.by.the.cable.link...
Creating a skew test pattern
i. Run.any.image.creation/editing.application,.such.as.the.Paint.program.
supplied.with.Windows.
ii. Using.the.image.application.create.three.
stacked.horizontal.rectangles.(one.red,.
one.green.and.one.blue).that.fill.the.
width.of.the.screen.
iii. Draw.a.vertical.black.line.down.across.
the.coloured.bars.and.then.repeat.this.
vertical.line.at.intervals.along.the.width.
of.the.coloured.bars..These.lines.create.
breaks.across.the.colours.and.give.you.
more.opportunities.to.view.the.horizontal.
position.of.each.colour.relative.to.the.others..
2. On.the.remote.user.keyboard.(connected.to.an.Adder.X100AS/R.extender),.
simultaneously,.press.the.hotkeys.(by.default,.
enter.configuration.mode.
The three keyboard indicators ('Num Lock',
'Caps Lock' and 'Scroll Lock') will now begin
to flash in sequence.
Convergence test
pattern showing the
RGB crosses. In this
case, the green signal
can be seen out of
line with the other
two colours.
.and. ).along.with. .to.