JAI CV-M30 operation manual Other Functions, Double Speed Mode, Partial Scanning Mode

CV-M30

6.4. Other Functions

6.4.1. Double Speed Mode

The CV-M30 camera revision D operates only with double speed scanning. Double speed is 120 fields per second. (V= 119.88Hz. H=31.468 kHz).

To use this mode.

Set:

6.4.2. Partial Scanning Mode

To obtain a higher frame rate, the partial scanning can be used. In this mode only the vertical center part of the CCD sensor is read out. Partial scan will only work in non-interlaced mode.

The useable image format is
Full non-interlaced	752(h) x 242(v) pixels (120 fields/second in continuous).
1/2 partial	752(h) x 111(v) pixels (240 fields/second in continuous).
1/3 partial	752(h) x 67(v) pixels (360 fields/second in continuous).

With external trigger and partial scan the maximum field rate is less then the above shown. The maximum field rate is given of the actual shutter time plus the readout time.

To use this mode.
Set:	SW1-4 and SW1-6 on the rear panel as follows:
	Full	SW1-4	OFF, SW1-6 OFF
	1/2 partial	SW1-4	ON, SW1-6	OFF
	1/3 partial	SW1-4	ON, SW1-6	ON
Note:	In this mode, the shutter speed has limitation depending on the selected range.
	Edge pre-select mode.
	1/2 partial: Double speed 1/250 to 1/20,000s.
	1/3 partial: Double speed 1/500 to 1/20,000s.

6.5. Timing Charts

6.5.1. Video Timing (H)

1clk = 34 ns

Fig. 9. Horizontal timing

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