Grass Valley LDK 7500 User Guide - Manual (Page 105)

Controls HD video mode 4-11
The white balance switch only operates if the colour temperature is set
to the FL, AW1 or AW2 position. Refer to Section 5 for more information
on how to use the automatic white balance.
Black balance is not necessary with this camera because of the
continuous automatic black control circuits.
Exposure Time switch
This up/down momentary switch gives a choice of eight exposure time
settings. These are:
Nom. - nominal setting
Var. - enables the exposure to be varied
Crt - for shooting sync-locked monitors
Film - enables the exposure to be varied with running shutter.
1/200 - for fast moving objects
1/500 - for fast moving objects
1/1000 - for fast moving objects
50 Hz - shooting with 50Hz lighting (adjustable)
60 Hz - shooting with 60Hz lighting (adjustable)
If an exposure time other than nominal is selected, the non-standard
indicator (!) in the viewfinder lights.
Vertical Shift switch (V-Shift)
Sometimes when shooting TV screens or monitors with the same
display frequency as the camera, a horizontal black bar is seen in the
viewfinder because the camera is blanking while the TV is not.
The V-Shift switch shifts the camera blanking. It is spring-loaded with
a central rest position. Holding the switch in the + or - position moves
the bar up or down so that it is no longer visible in the viewfinder.
This function is only available when the camera is not genlocked and
the camera is not recording. Set before starting to record.
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