Re: [Elphel-support] Elphel NC353L-369 Master - Slave external triggering
Jan, Just one last question - the frames do seem to be in sync now, but I wanted to ask whether it’s necessary to have the same TRIG_PERIOD set on both cameras in order for this to work or whether the TRIG_PERIOD doesn’t matter for the second camera as it just waits for the signal high? You might have already tested it - yes, TRIG_PERIOD of the slave camera does not have effect in this mode. Best regards, Oleg Dzhimiev Electronics Engineer phone: +1 801 783 x124 Elphel, Inc. ___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
Re: [Elphel-support] Elphel NC353L-369 Master - Slave external triggering
Ahh, so the middle two wires shouldn’t be crossed. No problem, thanks for the clarification. I am going to get right on it and report back. Have a great day, Jan Blazicek. On Mon, Apr 20, 2015 at 10:30 PM, Oleg support-list@support.elphel.com wrote: Apologies, there was a wrong wiring on the picture on our wiki - check out the corrected version http://wiki.elphel.com/index.php?title=File:Sync_cable.png. Best regards, Oleg Dzhimiev Electronics Engineer phone: +1 801 783 x124 Elphel, Inc.___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
Re: [Elphel-support] Elphel NC353L-369 Master - Slave external triggering
Thank you very much Oleg, everything seems to be working, although it did require a bit of fiddling. I had a couple of times where the slave camera didn’t display any new frames, but didn’t stop responding either - things like the histogram in the web CCI would suggest the frames were actually getting processed. That’s all sorted out now though, I’d post a solution for others, but it seemed to randomly fix itself when I reseted the parameters and repeated the triggering setup. Just one last question - the frames do seem to be in sync now, but I wanted to ask whether it’s necessary to have the same TRIG_PERIOD set on both cameras in order for this to work or whether the TRIG_PERIOD doesn’t matter for the second camera as it just waits for the signal high? I just want to quickly make sure the second cam is really getting triggered and isn’t just getting a very similar signal from its own FPGA. I could always check the metadata though, so that’s not really much of a problem. Thanks and good luck with your future projects, Jan.___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
Re: [Elphel-support] Elphel NC353L-369 Master - Slave external triggering
Apologies, there was a wrong wiring on the picture on our wiki - check out the corrected version http://wiki.elphel.com/index.php?title=File:Sync_cable.png. Best regards, Oleg Dzhimiev Electronics Engineer phone: +1 801 783 x124 Elphel, Inc. ___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
Re: [Elphel-support] Elphel NC353L-369 Master - Slave external triggering
Hi Jan, In the second case TRIG is still 0, because as soon as I set that it stops responding. That's what happens when you set up external triggering but the signals are not received for some reason. Another way to test your cable would be trying the following settings: Master Camera: TRIG_PERIOD=3840 TRIG_OUT=0x80 (send trigger signals to J15) TRIG_CONDITION=0x20 (trigger source - J15) TRIG=0x4 1. The order of applying TRIG and TRIG_CONDITION doesn't matter. If trigger signal is not generated then the camera will stop responding after applying the last parameter of these two. 2. If the Master camera doesn't stop responding then the cable and the port are ok. 3. The Slave camera can have exactly the same settings - so, you can test it in the Master mode as well - which only depends on the end of the sync cable plugged in. What results are you getting? Best regards, Oleg Dzhimiev Electronics Engineer phone: +1 801 783 x124 Elphel, Inc. ___ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
