JAI TM-9730CL, Руководство пользователя

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TM/TMC/RM/RMC-9730CL
10 Operation
3 Operation
3.1 Camera Back Panel
Figure 7. Camera Link back panel
3.1.1 Digital Output Connector
Refer to Section 2.2.2 on page 4 for Camera Link information.
3.1.2 Analog Output Connector
The TM-9730CL camera has a BNC connector on the rear panel to output analog video data.
3.1.3 Power and External Sync Connector
Refer to Table 2 on page 5 for information on the power and external sync. connectors.
3.2 Progressive Scanning
Standard TV-system scanning is 525 lines interlace scanning as specified in the RS-170 protocol.
Every other horizontal line (odd lines and even lines) is scanned at a 60Hz rate per field, and the
scanning is completed with two fields (one frame) at 30Hz rate. Because of the interlace scanning,
the vertical resolution of CCD cameras is limited at 350 TV lines, regardless of the horizontal
resolution. When electronic shutter is applied, the CCD can hold only one field of charge at each
exposure. Therefore, the vertical resolution of the electronic-shutter camera is only 244 TV lines.
The situation is the same for an HDTV-format camera, since it has interlaced scanning and the
vertical resolution of the shuttered image is 500 lines.
The TM-9730CL uses a state-of-the-art progressive scanning interline transfer CCD which scans all
lines sequentially from top to bottom at one frame rate (30Hz). Like a non-interlace computer
screen, it generates a stable, crisp image without alternating lines and provides full vertical TV
resolution of 525 lines (a normal TV monitor display may not be able to show images due to monitor
scanning).
The interline transfer architecture is also important to generate simultaneous shuttering. This is
different from full frame transfer architecture which requires a mechanical shutter or strobe light in
order to freeze the object motion.