User guide

Local Unit Operation 27

5. Local Unit Operation

Overview

For more information about serial/audio port operation, see Appendix E:

Audio/Serial Ports: Operation & Multi-Port Configuration, page 40.

Keyboard and Mouse Emulation

Local Units have keyboard and mouse emulation. The attached PC operates

normally without requiring a keyboard or mouse to be attached to either the

Remote or Local Units (in the case of a dual access system). You can therefore

replace any keyboard or mouse attached to the extender system without

disrupting the operation of the computer.

Power

Local Units (SDMX/S2 and SDMX/SA2) may require an external 5V PSU

(SDLink/PSK):

• For video only applications.

• If the PC cannot provide sufficient power through the keyboard connection.

Dual Access Systems

SDMX/D2 and SDMX/DA2 models offer dual access from consoles at both

Remote and Local Units. This operates on a first-come, first-served basis. When

one console is in use, the system blocks out the other console until there is no

keyboard or mouse use at the active console for two seconds. Both monitors

show the current activity on the computer irrespective of which console is in

use.

Only Reset and Private Mode commands are available at the Local Unit. If you

want to configure the Extender system (for example, change DDC emulation)

or tune the video signal, see page 21; these commands can only be issued from

the remote console.

To enter these commands:

1. Press and release the initial ‘hot’ key sequence.

2. Press and release the command key (see opposite).