SenTech STC-A33A Manual do Utilizador descarregar pdf (Página 18)

STC-A33A

2. Pulse Width Trigger Mode (Non-Reset, External Sync)

Note 1: The camera does NOT switch to the normal mode when the long exposure mode is selected. This timing chart

shows when the long exposure mode is selected.

Note 2: The internal VD signal is reset immediately after the exposure is finished. The video output signal is sent out

according to that reset VD timing.

Note 3: The exposure time is controlled by the pulse width of the trigger signal.

Note 4: External VD signal inputs continuously during the external sync mode. External VD signal is disregarded during

the trigger mode.

Note 5: The WEN signal does not output when the exposure by the trigger signal does not exist.

Normal mode

Exposure time

Trigger mode Normal mode

Not e 1: Automatical ly sw i tches

to nor mal m ode if the pulse

width of the trigger si gnal is

mor e than 500 msec .

Function mode

External VD

CCD exposure

Trigger signal

(Positive)

Video out

Note 3

WEN signal out

Note 4

Note 5

Note 2

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SenTech STC-A33A Manual do Utilizador Página 18