Base Station User Levels; Video Menu - Special Features - GRASS VALLEY LDK 4502 User Manual

Chapter 4 - Using the Base Station
Files menu
This menu allows values to be stored in System and operator files, and allows these files to be
recalled as required.
Diagnostic menu
The diagnostic menu is designed to provide information on the current status of the Base
Station.

4.4.7 Base Station user levels

The menu items are divided into two user levels. The operator level Op. (O) is default
accessible. Menu items with user level Install (I) are only accessible if the menu level is set to
Install. To enter the Install level proceed as follows:
1. Enter the menu.
2. Navigate to the Monitoring \ Menu \ Menu level Item.
3. Set the Menu level to Inst.
The purpose of the user levels is to restrict the set of functions which can be changed by
whoever is using the Base Station. In this way a the danger of the operator accidentally
changing critical functions while shooting is reduced.
The system Menu Structure paragraph of this section indicates which functions are available at
each user level.

4.4.8 Video menu - Special features

Auto lighting
The Auto Lighting item of the the video menu compensates for variations in the frequency of
the power supply used for gas discharge lamps (fluorescent or HMI lighting).
The frequency of power supply generators can vary from the nominal value. This variation
affects the lighting which in turn affects the colour balance. If camera system and lighting are
supplied by the same power source, then the base station auto lighting function can
automatically adjust the exposure to follow the variations and maintain a constant colour
balance. This correction only works when the camera exposure time is set to the 50Hz or 60Hz
position.
Gain adjustment
The Gain Adjustments item of the the video menu is a special item. It combines menu items
from various other menus to help you when you are adjusting the gain. It should only be used
when carrying out the gain adjustments on the Sync/Encoder board in conjunction with the
procedure given.
48 LDK 4502/4503/4506 HDTV camera base station User's Guide (v3.5)