User manual

441
Synchronization
23-bit audio (the least significant bit of this last channel
will be used for networking). In practice this makes no dis-
cernible difference to the audio quality, since you will still
have around 138dB headroom on this channel.
To set things up, open the VST System Link panel:
1. Open the Device Setup dialog on the Devices menu.
2. Select VST System Link in the Devices list to the left.
3. Use the ASIO Input and ASIO Output pop-up menus
to define which channel should be the networking channel
(and thus become a 23-bit audio channel, in our example).
Quite often you will be able to leave these pop-ups the way they are.
4. Click the Active checkbox at the top of the panel.
5. Repeat the steps above for every computer on the
network.
As the computers are made active, you should see the
small Sending and Receiving indicators flashing on each
active computer, and the name of each computer should
appear in the list at the bottom of the pane. Each com-
puter is assigned a random number – do not worry about
this, it is just so the network knows internally which one is
which.
• You can double-click on the name in bold (which is the
name of the computer you are currently working on) and
set it to whatever other name you wish.
This name will appear in the System Link window of every computer on
the network.
Ö If you do not see the name of each computer appear-
ing once you have made it active, you may have to check
your settings.
Go through the procedure above again and make sure that all ASIO
cards are listening to the digital clock signals correctly, and that each
computer has the correct inputs and outputs assigned to the System
Link network.
Putting the network online
After each computer’s name you will see whether it is online
or not. When a computer is online, it will receive transport
and timecode signals, and its sequencer application can be
started and stopped by remote control. If it is off-line, it can
only be started from its own keyboard – it is effectively an
independent machine, although it is still on the network.
Ö Note that any computer can control any and all of the
others – VST System Link is a peer-to-peer network and
there is no absolute “master” computer.
However, most users do like to think of one machine as the master (in a
one person/two computer network, this would be the machine you actu-
ally sit behind most of the time).
For now, let’s put all computers online:
1. Activate the Online checkbox in the VST System Link
panel for all computers.
2. Check that the system is working by pressing Play on
one computer – all computers should start almost instantly
and play perfectly in time, with sample-accurate precision.
• The Offset setting allows you to adjust whether one ma-
chine will play back slightly ahead or behind the rest.
This is normally not needed, but occasionally with some hardware you
may find that the lock is a few samples out. In that case you can adjust
the lock with the Offset value. For now, leave it set to 0 – it will most likely
be what you want.
• The Transfer Bits setting allows you to specify whether
you want to transfer 24 or 16 bits. This allows you to use
older audio cards which do not support transfer of 24 bits.