Hi again. Viewing the cam from this position:
http://www3.elphel.com/sites/default/files/images/nc353-369.jpeg is pin 1 the leftmost or the rightmost? Thank you, Ángel. 2010/2/3 Ángel <[email protected]> > Thank you very much, Oleg. I missed the circuit schematics. Now I have only > to make the cable and start with the experiments. > > Ángel. > > 2010/2/2 Oleg Dzhimiev <[email protected]> > > Ángel, >> >> J15 >> pin 1: GND >> pin 2: camera input, GPIO[10], +5V >> pin 3: camera input, to GND >> pin 4: camera output, GPIO[11], +5V >> >> You can begin with connecting 1-3 & 2-4, setting correct parameters and >> testing with oscilloscope how it works. >> >> The circuit diagram can be found on our wiki - the link is right under the >> 10369 functional diagram. >> >> Oleg >> >> >> On 2 February 2010 14:12, Ángel <[email protected]> wrote: >> >>> Thank you very much, Oleg & Andrey. >>> >>> I'm in the process of understanding the camera. Since I have access to a >>> digital sampling oscilloscope I would like to play a little with triggering. >>> >>> So, what pins of J15 must I connect the signal and ground wires of the >>> function generator output to? >>> >>> Thank you, again. >>> >>> Ángel. >>> >>> 2010/2/2 Andrey Filippov <[email protected]> >>> >>> Ángel, >>>> >>>> Couple more notes about external triggering. >>>> >>>> This is a "Electronic Rolling Shutter" sensor, so there are some >>>> natural limitations on what you can do with external triggering. If you >>>> want >>>> just to synchronize two cameras - it is easy, but you can not trigger the >>>> camera that way from a flash (there are some other ways how to do that). >>>> External trigger on the sensor level work in the following way: >>>> 1 - sensor waits for the trigger to occur, to data and sync signals are >>>> output >>>> 2 - after the trigger sensor skips 8 scan lines (for some internal >>>> reasons) >>>> 3 - sensor _starts_ to erase scan line - one by one - the it will take >>>> about 1/15 seconds to clear the full 5 MPix frame >>>> 4 - after waiting specified exposure time from start of the erasing >>>> process (sensor does not need to wait the full frame to be erased!) sensor >>>> starts readout - line by line, at the same pace the erase process >>>> (initiated >>>> at step 3). >>>> The process of readout (and so exposure of the last line in the frame) >>>> will ens in 8*scan_line_time + exposure time + frame_readout_time. >>>> >>>> If you want to catch some instantaneous event (i.e. flash) you'll need >>>> to set exposure time to > frame readout time and initiate that event after >>>> the full frame is erased but before the first line is read out. >>>> >>>> Second note is related to the camera driver - because of pipeline >>>> operation (described in >>>> http://www.linuxfordevices.com/c/a/Linux-For-Devices-Articles/Elphel-camera-under-the-hood-from-Verilog-to-PHP/) >>>> it heavily depends on the frame sync pulses from the sensor. So if the >>>> sensor is stopped so is the driver that among others handle all the >>>> parameter changes. If the camera is set to external trigger mode and there >>>> is no trigger coming - the driver will effectively get stuck. >>>> >>>> Andrey >>>> >>> >>> >>> >>> -- >>> Elphel NC353L-369 (12-36 VDC) + Computar H2Z0414C-MP >>> >> >> > > > -- > Elphel NC353L-369 (12-36 VDC) + Computar H2Z0414C-MP > -- Elphel NC353L-369 (12-36 VDC) + Computar H2Z0414C-MP
_______________________________________________ Support-list mailing list [email protected] http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
