The Adder unit provides numerous configuration options to ensure that it best
suits your circumstances and the tasks carried out by the connected systems.

Setting (or changing) a password

The password option allows you to quickly impose a level of security suitable to
prevent system tampering while you are away from your desk for short periods.
When enabled, the Adder unit will default to protected mode when switched on
or when you press the hotkeys and L (lock).

To set (or change or cancel) a password
Note: If the

SYSTEM

readout shows p then the current password must be entered

before attempting to enter the configuration mode.

1 Enter configuration mode: Press and hold the

SELECT

button until the

SYSTEM

readout shows C.

2 Press

. The

SYSTEM

readout will show

to indicate that you should

enter your new password.

Note: The password is not case sensitive and can be any combination of

keystrokes including the function keys but excluding

and

Note: To cancel the password protection function, do not enter any

characters, merely press

3 When the password has been entered, press

to fix it and press to

exit from configuration mode.

To lock the system (invoking password protection)

• Press and hold the hotkeys (usually

and

) and press . The

SYSTEM

readout should show p.

Note: If the

SYSTEM

readout shows , there is no password currently set.

To enter a password and unlock the system

1 Enter the current password (upper and lower cases are not differentiated).
2 Press

. The

SYSTEM

readout should show the number of the first available

system.

If the password is forgotten

1 Remove power from the Adder unit. If any systems are active, either switch

them off or remove their keyboard link connectors from the Adder unit. If an
optional power supply is used, remove it.

2 Press and hold the

SELECT

button and re-apply at least one source of power.

The

SYSTEM

readout will show C to signify that configuration mode is active.

3 Follow the standard procedure ‘To set (or change or cancel) a password’

from step 2 to create a new password.

Changing hotkeys

Hotkeys are two normal keyboard keys that, when pressed simultaneously with
a third key, signal to the Adder unit that you are sending a message specifically
to it and not to the currently selected system. The hotkeys are ordinarily

and

, while a third keypress determines what you want the Adder unit to do, e.g

change to different system, invoke password protection, etc.
If the standard

and

hotkeys are also needed for computer system tasks,

you can change them for another combination, as discussed below.

To change the hotkeys

1 Enter configuration mode: Press and hold the

SELECT

button until the

SYSTEM

readout shows C.

2 Press followed by a number to select the required hotkey setting, as

follows:

‘CTRL’ and ‘ALT’ keys together (default)

‘CTRL’ and ‘SHIFT’ keys together

‘ALT’ and ‘SHIFT’ keys together

‘RIGHT ALT’ key

‘LEFT ALT’ and ‘RIGHT ALT’ keys together

‘LEFT CTRL’ and ‘LEFT ALT’ keys together
‘RIGHT CTRL’ and ‘RIGHT ALT’ keys together
No hotkey enabled

3 When the hotkey combination selection has been made, press

to fix it

and press to exit from configuration mode.