GUIDE TO INSTALLATION AND OPERATION
42
| LGK-3901/DSK-3901
4.15 System Configuration
The front panel USER PRESETS menu is used to import and export different LGK-3901/DSK-3901 system
configurations required for different user applications. For example a card may be switched between different video
standards by creating two configurations and then importing the appropriate configuration file when a change is
required.
System configurations may also be transferred between cards to ensure consistency of state between them. After an
import, all settings within the selected configuration file are validated against the capabilities of the new device. This
ensures that any hardware or Options differences between units are catered for correctly.
System settings can be split up into two categories:
•
Persistent
Settings from the SETUP and CONFIG ALARMS front panel menus
•
Volatile
Settings from the OPERATE front panel menu
When exporting a configuration, the file generated always encapsulates all persistent settings currently applied to the
system.
Volatile settings are not actually saved within the configuration file; however the “restart behaviour” of each individual
setting is stored. The three possible restart behaviours of volatile settings are as follows:
•
Reset to the factory-default value
•
Reset to a user-defined value
•
Persist from the previous session
The standard restart behaviour of volatile settings is defined within the device capabilities; however behaviour can be
modified via the Configurator tool, a Windows application accompanying the LGK-3901/DSK-3901 software release.
Note:
Please see section 7 for details of the Configurator application.
Such granularity of management over system state gives a high level of control over system restart behaviour. For
example, it may be required on restart of an LGK-3901 that DSK1, DSK2, DSK3 and DSK4 be cut-down and
unloaded, but DSK5 be cut up and loaded with the station logo.
4.15.1 Importing Configurations
The USER PRESETS > IMPORT option allows the user to select from a list of available configuration files and
choose which one will be used on the next system restart. Use the [+] and [–] joystick arrows and [SELECT] to select
and confirm a new file.
For the new setting to take effect the system must be restarted. A prompt will therefore appear after selecting the
new configuration file requesting a system restart. Use the joystick arrows to select YES and press [SELECT].
Alternatively a software reset can be manually selected at a later date.
If the user wishes to cancel any selection made (assuming no restart occurred), then re-enter the menu and select
“[KEEP CURRENT]”. This means that the active configuration will continue to persist on restart.
During the restart, the last imported configuration (or the active configuration if there was no import) is validated
against the device capabilities and the resulting state becomes the new “active configuration”. The active
configuration is subsequently modified on an ongoing basis by changes to persistent states (and volatile states
which are flagged to persist).
Assuming that no further configuration files are imported (normally the case once a system is set up correctly) then
the active configuration continues to be applied on subsequent restarts.
USO
RESTRITO
