JAI TM-6740GE, User Manual

Page: 16 / 72

TM-6740GE Series
16 Operation
3 Operation
3.1 Progressive Scanning
The TM-6740GE uses a state-of-the-art progressive scanning interline transfer CCD which scans all lines
sequentially from top to bottom at one frame rate. Like a non-interlace computer screen, it generates a stable,
crisp image without alternating lines and provides full vertical TV resolution of 480 lines. Due to the TM-
6740GE’s extremely high frame rate, however, it will not synchronize to most monitors.
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.
The TM-6740GE outputs the progressive scanned image with an electronic shutter in thirty-six different
formats. See Table 2 on page 17 for more information.
Progressive scanning digital and analog output
The CCD signal goes through A/D converters 10-bit in, 10-bit/8-bit out. The digital output is available via the
Gigabit Ethernet connector.
The analog output is the same as 75 ohms, 714mV format available from BNC and 12-pin connector. Full
Progressive Scan
Normal scanning mode for the TM-6740GE is 640 x 480 pixels. The standard speed with dual-channel output is
200 frame/sec at the pixel clock rate of 40 MHz. The progressive scan reads every line from top to bottom and
all lines are exposed with a single electronic shutter.
Figure 5. Full Progressive Scan Mode (A)
Partial Scan Mode
By selection, the camera has three partial scan modes: centered 160 lines, centered 224 columns, and
centered 224 x 160 area.
Figure 6. Partial Scan Mode (B, C, and D)