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Appendix 3 - VNC viewer connection options
When.you.are.connecting.to.the.
AdderView.CATxIP.1000.using.
the.VNC.viewer,.a.number.of.
options.are.available..

Colour/Encoding

Auto select
When.ticked,.this.option.will.
examine.the.speed.of.your.
connection.to.the.AdderView.
CATxIP.1000.and.apply.the.most.
suitable.encoding.method..This.
option.is.suggested.for.the.majority.
of.installations.
Preferred encoding
There.are.three.manually.selectable.
encoding.methods.which.are.
accessible.when.the.Auto.select.
option.is.unticked..
•. ZRLE.–.This.is.a.highly.
compressed.method.that.is.
best.suited.to.slow.modem.
connections.
•. Hextile.–.This.method.offers.
better.performance.than.the.ZRLE.when.used.over.a.high.speed.network.
because.there.is.no.need.for.the.AdderView.CATxIP.1000.to.spend.time.
highly.compressing.the.data.
•. Raw.–.This.is.a.primitive,.uncompressed.method.that.is.mainly.used.for.
technical.support.issues..You.are.recommended.not.to.use.this.method..
Colour level
This.section.allows.you.to.select.the.most.appropriate.colour.level.for.the.speed.
of.the.connection.to.the.AdderView.CATxIP.1000..Where.the.connection.speed.
is.slow.or.inconsistent.there.will.be.a.necessary.compromise.between.screen.
response.and.colour.depth.
•. Full.–.This.mode.is.suitable.only.for.fast.network.connections.and.will.pass.
on.the.maximum.colour.depth.being.used.by.the.host.system.
•. Medium (256 colours).–.This.mode.reduces.the.host.system.output.
to.a.256.colour.mode.and.is.more.suitable.for.ISDN.and.fast.modem.
connections.
•. Low (64 colours).–.This.mode.is.suitable.for.slower.modem.connections.
and.reduces.the.host.system.output.to.64.colours..
•. Very low (8 colours).–.This.mode.provides.very.rudimentary.picture.
quality.and.hardly.any.speed.advantage.over.the.64.colour.setting..You.are.
recommended.not.to.use.this.mode....
IMPORTANT:.If.you.make.any.changes.to.the.options.given.here.and.wish.to.
retain.them.for.successive.connection.sessions,.you.must.save.the.changes...
To.do.this,.change.to.the.‘Load/Save’.tab.and.click.the.‘Save’.button.within.the.
‘Default’.section..
Click here to
access the options
There.are.six.tabbed.pages.of.options:
•. Colour/Encoding
•. Inputs
•. Scaling
•. Misc
•. Identities
•. Load/Save