Grass Valley 3-CCD CameraMan - Manual (Page 50)

50 CameraMan Installation and Operation Manual
Appendix H — CPT 2018-A3D On-Screen Menus
User Mode Submenus Overview
Iris, Shutter, Gain Settings
Figure 30. Iris, Shutter, Gain Setting Submenu
Table 6. Iris, Shutter, Gain Settings
Picture Level (-50 to +50) Convergence level of AUTO IRIS/AGC/ELC can be adjusted.
Light PEAK/AVG (P50 to A50) The ratio of AUTO IRIS/AGC/ELC detected peak to average can be adjusted within a
range.
Light Area A photometric measurement method can be selected for AUTO IRIS/AGC/ELC.
All: All the screen is measured.
Center: The screen is measured mainly in the center 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 mea-
surement.
Auto Iris Adjust (ON, OFF)
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 set-
ting.
*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 hor-
izontal 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 dur-
ing synchro scanning.
Shutter Speed Synchro-Scan Required Luminance Ratio
OFF - 1
1/100 100.3 Hz 2
1/250 250.0 Hz 4