Extron Electronics SW DVI Plus Series User Guide - Manual (Page 21)

SW DVI Plus Series • Operation 15 15
Enabling Front Panel Lockout (Executive Mode)
Front panel lock mode (executive mode) disables all front panel controls. Putting the
switcher in this mode enhances security by protecting against inappropriate or accidental
changes to settings. When the switcher is in lock mode, RS-232 and IR control remain
available.
To lock or unlock the front panel, press and hold Input buttons 1 and 2 simultaneously for
3 seconds, then release them. The front panel LEDs blink three times, indicating that front
panel lock mode has been enabled or disabled (see the illustration below).
1 2
Release buttons.
Press and hold simultaneously
for 3 seconds.
LEDs blink 3 times.
Figure 19. Enabling or Disabling Front Panel Lock Mode
Setting Equalization for Input Sources
The front panel contains a set of Input EQ DIP switches, one for each of the switcher inputs.
High and low equalization levels for each input are selected via these switches. Setting
them to High (up) compensates for a degraded or poor quality signal, reducing the need for
additional signal conditioning equipment.
If the input signal is strong, set the switches to Low (down).
EDID Modes
The SW DVI switchers utilize the EDID Minder, which maintains EDID communication to all
connected source devices, whether or not any of the sources are selected. EDID information
consists of the display resolution, refresh rate, data rate, supported audio formats, and other
features. By factory default, the EDID stored on all inputs contains information for a native
resolution of 1024x768.
The EDID information can be communicated in two modes: automatic and user-assigned.
Automatic mode
In automatic mode, the switcher automatically stores EDID from the connected display and
communicates it to the inputs; no other configuration is required. This is the default mode.
• Reading and storage process — Each time a display is connected to the DVI output
while the power is connected, the SW DVI Plus reads the EDID from the display device
and stores it at each input. This information is retained after the display is disconnected;
however, it is overwritten if a new display is connected or a user assigned EDID file is
selected.
• Default EDID — When the switcher is in automatic mode, the default EDID (1024x768
@ 60 Hz) is stored at each input until a display is connected, at which time it is
overwritten.