dear andrey,
it works. however I do not fully understand how to calculate frame/scan-line duration and framerate now.
Which measurements/formats are VIRT_WIDTH and VIRT_HEIGHT in ? Pixels? (tooltip tells frame duration in scanlines = VIRT_WIDTH * VIRT_HEIGHT. so do I need to multiply by pixel clock to get the real readout time?)
best, m,-
The simplest way to slow down the linescan mode is to use two parameters (they appear in parsedit.php links in the camera if you use current code), here is the link to the source: http://elphel.cvs.sourceforge.net/viewvc/elphel/elphel353-8.0/packages/web/353/php_top/parsedit.php?view=markup There are two paramteres (with "tooltip" when you hold mouse pointer over) VIRT_HEIGHT - number of scan lines per each"frame" (two lines in your case). The scan line duration is constant, by default software sets it to a minimal value allowed by the sensor, but you may increase it. VIRT_KEEP - set to 1 to instruct software to keep VIRT_HEIGHT value. When 0 the VIRT_HEIGHT is calculated automatically. And of course the period of 2 line-stripes (including the invisible to the total of VIRT_HEIGHT)ca not be less than exposure time. So if exposure increases, the frame rate goes down.
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