Binning | JAI CV-M7+, M7+ CL, CV-M4+, M4+ CL manual

CV-M4+/M4+CL, CV-M7+/M7+CL

Binning mode is a function where the signal charge from 2 or more adjacent pixels are added together and read out as one pixel. A resulting full frame with lower spatial resolution can be read out with a higher rate, and higher sensitivity. The CV-M4+has vertical binning where the pixel charge from 2 adjacent lines are added together in the horizontal ccd register. It is done by double pulses to the vertical ccd register. Lowest shutter speed is 1/50. In binning mode H is 43.3 ∝ sec. Binning will only work for the monochrome cameras CV-M4+and CV-M4+CL.

No V binning

V binning

Verticalccdregister	Xsg1	1380 pixels

	Video	1030 pixels
		Normal full scanning.
	out
		Aspect ratio correct

Horizontal ccd register

Fig. 11. Binning.

515 pixels

1380 pixels

Vertical 2:1 binnig Aspect ratio not correct

H synchronous or H a-synchronous shutter. In H synchronous trigger mode, the accumulation will start at the first internal HD pulse after the trigger leading edge. In HD a-synchronous trigger mode, the trigger leading edge will immediately reset the internal H timing and start the accumulation.

In H synchronous trigger mode and H a-synchronous trigger mode a new trigger must not be applied before the previous frame is read out.

Trigger	H synchronous	Trigger	H a-synchronous
			H a-synchronous

Int. HD		Int. HD
Int. HD		Int. HD
Accum		Accum

Fig. 12. H synchronous/a-synchronous trigger.

Multiple exposure is a function which allows several exposures with a short interval. The exposures are all placed in the same frame. This function is useful for studies of high speed events.

The trigger leading edge will start the first exposure (edge pre select). When it is finished, the resulting charge is read out in the stopped vertical ccd register. With additional trigger pulses on the multi exposure input, new exposures can be done. The charge from each is added on top of the first charge in the stopped vertical ccd register. Up to 6 exposures can be done with multi exposure. The trigger trailing edge will start the vertical ccd registers, and the video signal will be read out. Fig. 13 shows the timing details.