Grass Valley 3-CCD CameraMan - Manual (Page 67)

CameraMan Installation and Operation Manual 67
Submenus Overview
User Mode Submenus Overview
Iris, Shutter, Gain Settings Overview
Figure 44. Iris, Shutter, Gain Setting
Table 19. Iris, Shutter, Gain Settings
A. Iris Level (-50 to +50) Convergence level of AUTO IRIS/AGC/ELC can be adjusted.
A. Iris PEAK/AVG (P50 to A50) The ratio of AUTO IRIS/AGC/ELC detected peak to average can be adjusted
within a range.
Auto Iris Area A photometric measurement method can be selected for AUTO IRIS/AGC/ELC.
ALL: All the screen area is measured.
Centre: The screen is measured mainly in the centre area, about one-third of both the top and
bottom and one-third of both the right and left portions of the screen are excluded from mea-
surement.
Top cut: About one-third of the top portion of the screen is excluded from measurement.
BTM cut: About one-third of the bottom portion of the screen is excluded from measurement.
R/L cut: About one-third of both the right and left portions of the screen are excluded from
measurement.
Auto Iris Adjust ON: Fine adjustment of auto iris convergence level can be made with the iris control.
OFF: The iris is invalid.
Shutter Mode Step: Electronic shutter operates at the speed selected by the Step/Synchro setting.
ELC: Electronic shutter is controlled to automatically adjust the luminance.
S/Scan (Synchro Scan): Electronic shutter operates at the speed selected in Step/Synchro
setting.
*If Frame 1 is selected in Field/Frame setting, Shutter Mode setting cannot be added.
Step/Synchro This can be set when “Step” or “S/Scan” has been selected as the Shutter Mode setting.
When “Step” has been selected as the Shutter Mode setting:
OFF: The electronic shutter is set to OFF.
1/100, 1/250, 1/500, 1/1000, 1/2000, 1/4000, 1/10000: The electronic shutter operates
at the shutter speed selected.
When “S/Scan” has been selected as the Shutter Mode Setting:
60.34Hz to 15.75kHz: When the screen of a work station, etc. is to be shot, the noise on the
horizontal bars can be reduced by proceeding with the synchro-scan adjustment.
*Refer to the table below for the light quantity settings to be used in each shutter mode and
during synchro scanning.
Shutter
Speed Synchro-
scan Required luminance
ratio
OFF - 1
1/120 120.2 Hz 2
1/250 250.0 Hz 4