JAI CV-M40 operation manual Pulse width control mode, Frame-delay readout mode

CV-M40

a)Set SW1-5 at ON, and SW1-6 at OFF to select the Edge pre-select mode.

b)Set SW1-1 to SW1-3 to select the appropriate shutter speed. For controlling the shutter speed by the RS 232C serial interface, set SW1-8 at ON.

c)Set the SW1-4 switch to ON to select the Binning mode and set the switch SW1-7 to OFF to select the Partial scan mode.

CAUTION

The pulse width of the external trigger pulse must be 2H to 1300H.

6-2-2. Pulse width control mode

In this mode, the exposure time is controlled by the pulse width of external trigger pulse. The exposure starts at the falling edge of the external trigger pulse and ends at the rising edge of the external trigger pulse. The WEN pulse is generated and output from the camera.

For details, refer to the timing charts section of this manual.

To use this mode, set up the camera as follows ;

a)Set SW1-5 at OFF, and SW1-6 at ON to select the Pulse width control mode.

b)Set the SW1-4 switch to ON to select the Binning mode and set the switch SW1-7 to OFF to select the Partial scan mode.

CAUTION

The pulse width of the external trigger pulse must be 2H to 525H.

6-2-3. Frame-delay readout mode

In this mode, the timing of the video output is controlled by the width of the external trigger pulse. The exposure starts at the falling edge of the external trigger pulse and ends according to the shutter setting. The video signal is output at the rising edge of the external trigger signal. The WEN pulse is generated and output from the camera.

For details, refer to the timing charts section of this manual.

To use this mode, set up the camera as follows ;

a)Set SW1-5 at ON, and SW1-6 at ON to select the Frame-delay readout mode.

b)Set SW1-1 to SW1-3 to select the shutter speed.

c)Set the SW1-4 switch to ON to select the Binning mode and set the switch SW1-7 to OFF to select the Partial scan mode.

CAUTION

The minimum value of pulse width for the external trigger pulse depends on the exposure time, as follow. Minimum : pulse width (more than 3H) > exposure time

9