Technicolor - Thomson RP5430 - Manual (Page 44)

5-6 Operator's Manual LDK 200 Triax Shooting
Sometimes when shooting TVs or computer monitors
a horizontal bar can be seen across those screens in
the viewfinder. There are two ways of removing the
noise bar from the picture depending on the frame
frequency of the display. For displays with the same
frame frequency as the camera, for example TV sets,
use the V-shift facility. For displays with a higher
frame frequency, for example computer monitors, use
the Clean Scan facility.
Clean Scan
Carry out the Clean Scan function as follows:
a. press the Clean Scan button at the front of the
camcorder for about two seconds to directly access
the variable exposure (clean scan) function. The
Clean Scan submenu appears in the viewfinder.
b. Use the rotary control to change the value and so
remove the horizontal black bar.
c. If a more accurate adjustment is required set the
Cl. Scan item to Extended.
Note: Set the Clean Scan mode to Normal if a smear
effect occurs.
d. Set the Unit item to the prefered read out, Hz or
mSec.
When you are finished shooting the monitor press the
Clean Scan button for two seconds to switch off the
Clean Scan function. (Exposure Time returns to its
previous non-variable setting).
The ranges for in Normal mode are:
from 54.7 to 121.5 for 50Hz cameras
from 60.9 to 155.1 for 60Hz cameras
The ranges for in Extended mode are:
from 50.6 to 103.1 for 50Hz cameras
from 61.1 to 151 for 60Hz cameras
V-SHIFT
The vertical shift switch (V-SHIFT) at the front of the
camera is used for displays with the same frame
frequency as the camera, for example TV sets. It is
an up/down type switch. Pressing the switch moves
the black bar up or down so that it is no longer visible
in the viewfinder. This function is only active when the
camera is not genlocked and when it is not on-air.
If the frame frequencies of camera and monitor are
different use the clean scan function.
Shooting Screens
CRT Exposure
A third possibility can arise when shooting a monitor
whose synchronization is locked to the camera's.
Stripes might be visible in the picture of the monitor.
(This is more usual with 16:9 cameras.) To remove
these disturbing line pairing effects between monitor
and camera lines, select the CRT option with the
Exposure time switch.