enter.configuration.mode.
The three keyboard indicators (‘Num Lock’, ‘Caps
Lock’ and ‘Scroll Lock’) will now begin to flash in
sequence. The speed of the sequence indicates the
level of the sharpness adjustment currently applied:
the slower the rate, the lower the level of sharpness
being applied.

3. While.viewing.the.displayed.screen.image,.use.the.following.keys.to.adjust.

the.controls:
Sharpness:. . .for.fine.adjustment,. . .for.coarse.adjustment.

There.are.255.sharpness.levels.(one.coarse.step.jumps.10.levels).
To autoset sharpness:.Press. . . .to.make.the.module.

calculate.and.apply.an.automatic.compensation.level.-.you.can.
use.this.as.a.starting.point.for.your.fine.tuning.
Note: If the monitor goes blank and switches off (due to oversetting
the sharpness adjustment) press the Home key to restore.

Brightness:. . .for.adjustment..There.are.255.brightness.levels....

Sharpness
increase
(coarse)

Sharpness
decrease
(coarse)

Sharpness
increase
(fine)

Sharpness
decrease
(fine)

Brightness
increase

Brightness
decrease

Restore default
sharpness and
brightness
settings

Exit image
controls
and save
settings

If the image controls cannot provide a crisp image
If,.after.adjusting.the.image.controls,.one.or.more.screen.images.remain.
fuzzy.or.have.coloured.shadows.you.may.need.to.use.the.Skew.adjustment.
feature..Please.see.

Remote user skew adjustment

.for.details.(Adder.

X100AS/R.or.X200AS/R.modules.only).

Remote user video compensation

Video.compensation.for.each.remote.user.is.provided.by.their.Adder.X100.or.
X200.modules,.not.by.the.AdderView.CATx.unit.itself..Using.the.Adder.X100/
X200.controls.you.can.adjust.the.picture.sharpness.and.brightness.to.improve.
the.remote.picture.quality..
Note: Accurate remote user compensation relies upon visual feedback from
the screen image. It is therefore vital to ensure that the video images being
sent out from the AdderView CATx are as ‘true’ as possible. Ensure, using the
local user port, that the video images received from the computers are correctly
compensated BEFORE attempting to adjust the remote user(s).
Video.compensation.is.best.carried.out.when.viewing.high.contrast.images.with.
vertical.edges,.such.as.black.lines.on.a.white.background..When.doing.so,.if.you.
notice.that.the.screen.image.is.‘fuzzy’.or.‘dark’.then.the.image.controls.may.not.
be.able.to.solve.this.condition..
Note: If the high contrast images exhibit shadows with separate colours, then
there may be a skew problem which requires a different image adjustment
(provided only by Adder X100AS/R and X200AS/R modules) - see the

Remote

user skew adjustment

section for details.

To display a suitable high contrast image
The.best.way.to.clearly.view.the.effect.of.sharpness.and.brightness.adjustments.
is.to.display.a.high.contrast.image,.with.vertical.
edges,.on.the.screen..

•. Open.a.word.processor,.type.the.capital.letter.

‘H’,.or.‘M’.and.increase.the.point.size.to.72.
or.higher..For.best.results,.the.background.
should.be.white.and.the.character.should.be.
black..

•. A.BLACK.shadow.on.the.right.of.the.character.

indicates.UNDER.compensation.

•. A.WHITE.shadow.on.the.right.of.the.character.

indicates.OVER.compensation..

Note: The Word processor method is accurate and quick. However, for the very
finest video compensation, use the latest Adder “skew” test pattern program
which shows both the skew pattern and a section of mixed size Hs (black on
white and white on black).

High contrast
black character
on white
background

Black or bright
white shadow
on the right
indicates
the need for
sharpness
adjustment

4. When.no.shadows.are.visible.and.the.displayed.images.have.crisp.edges,.

press.

.to.exit.configuration.mode.and.permanently.save.all.settings.

. The.new.compensation.settings.will.be.stored,.even.when.power.is.removed.

or.if.a.complete.reset.is.initiated..These.settings.should.not.require.further.
changes.unless.the.cabling.arrangements.are.altered..