These Adder units can be linked in a cascade formation to allow more computer
systems to be controlled. SmartView Multiscreen Serial units can be connected
in a cascaded tree structure. This can be particularly useful where clusters of
computers are located some distance from each other because each unit acts as
data booster and can each be up to 30 metres away from the next SmartView
Multiscreen Serial.

Cascade connections

To cascade Adder units: the sockets of a system port (1 to 4) on one Adder unit
must be connected to the sockets of the common port of the Adder unit below.
The cascade link is shown in light orange on the diagram.
Computer systems can be attached to all vacant ports that are not being used as
cascade links.
When cascading Adder units in this way, a power adapter (PSU-IEC-5VDC) must
be connected to each unit.

Cascade system selection

The quickest way to access cascaded systems is to use hotkey sequences.

1 Simultaneously press and hold

and

Note: The and keys when pressed in combination are called ‘hotkeys’ and

they signal to the Adder unit that you wish to control it, rather than the
computer. However, if these particular hotkeys clash with another device or
program, then you can change them to a different combination.

2 While still holding

and

, press the first numeral of the required port

address, then:

• If the port address is a single character, release all of the keys.
• If the port address is two or more characters, release the first numeral

key and press the second – repeat this procedure until all of the port
address numerals have been entered, then release

and

Note: The numbers on your keyboard’s numeric keypad are not valid, use

only the numeral keys above the QWERTY section.

The address of each system is determined by the port of the Adder unit to

which it directly connected and also the number(s) or the port(s) to which its
Adder unit is cascaded into other Adder units above.

For instance, on the link diagram shown opposite, the computer system

connected to port 3 of the lower Adder unit would be addressed as 43. This
is because the lower Adder unit is cascaded through port 4 of the upper
Adder unit.

Cascade link

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