Pulnix TM-250 Manual de Instruções descarregar pdf (Página 24)

Page 18

Operation Mode

TM-250 Miniature CCD Camera

5 Operation Mode

5.1 Cyclic Mode

5.1.1 No Discharge Operation

In this cyclic operation, the camera generates its own synchronization signal and cyclically transfers the

photo-charge. Since no discharge occurs, the one full frame time (60mS) is the exposure time for both

ﬁelds in Frame Accumulation mode, as shown in Figure 9 below, and one full ﬁeld time (30mS) in Field

mode as shown in Figure 10 on page 19. The discharge pulse dumps photo-electrons accumulated in the

photoreceptor which mechanism is called electronic shutter. Since the discharge pulse is not employed

in this mode, we refer this mode to “NO” shutter.

TABLE 5. Shutter Speed Control in High-Speed Cyclic Shutter Mode

OFF

ASY

CYC

Exposure

Time

Down Down Down Down Down Down 1/30

Down Down Down Down Down Up 1/60

Down Down Down Down Up Down 1/100

Down Down Down Down Up Up 1/120

Down Down Down Up Down Down 1/250

Down Down Down Up Down Up 1/500

Down Down Down Up Up Down 1/1,000

Down Down Down Up Up Up 1/5,000

Down Down Up Down Down Down 1/2,100

Down Down Up Down Down Up 1/2,800

Down Down Up Down Up Down 1/3,500

Down Down Up Down Up Up 1/4,400

Down Down Up Up Down Down 1/6,200

Down Down Up Up Down Up 1/10,200

Down Down Up Up Up Down 1/29,100

F2: not applicable.

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Pulnix TM-250 Manual de Instruções Página 24