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24 C3425M-E (1/09)
DW/CW SERIES (WIDE DYNAMIC RANGE) ADJUSTMENTS
Refer to Figure 15 to adjust the IS90-DW or IS90-CW model.
Figure 15. Adjusting the IS90-DW/CW Series Camclosure
SWITCH SETTINGS
Locate the DIP switch. Then set the switches for your installation.
SW1-1: Video Format
Set SW1-1 to ON for NTSC. Set it to OFF for PAL. The default is ON.
SW1-2: Line Sync
When multiple cameras are connected to the same switching device, vertical roll may occur on the
monitor. AC line lock eliminates vertical roll by locking the frame rate to the power supply frequency. Each
camera output is synchronized to the power supply frequency (refer to Vertical Phase Adjustment on
page 27 for more information.)
Internal line sync disables line lock and synchronizes cameras internally.
Set SW1-2 to ON to use AC line lock. Set it to OFF to use internal line sync. The default is ON.
SW1-3: Interlaced Scanning/Progressive Scanning
Interlaced scanning is the standard for analog recording installations. Each frame contains one odd and
one even field, each processed separately.
Progressive scanning is better for digital recording installations. Each frame is processed as a whole,
which results in less blurring and cleaner digital conversion. It also saves storage space on digital video
recorders.
Set SW1-3 to ON to select interlaced scanning. Set it to OFF to select progressive scanning. The default
is ON.
DEFAULT SWITCH POSITION
R7
SW1