Nikon D810a hangs on download for exposures more than 1m


I was using my D810a and had no trouble taking 30sec exposures, but when I upped the exposure to 1min, SGP would hang on ‘downloading’ then eventually timeout. I checked the camera and ‘PC’ is displayed on the window. I reviewed the logs and it says that it is entering a dangerous loop. The only way to get it working again is to cycle the power on the camera. After that, 0-30sec exposures work, but once I try anything longer than 1min, it hangs. I’ve put the log file in my dropbox. Occurrence is around 3:10-3:25am SGP v2,6,0,25, Windows 10


Not sure if the D810a is the same as my D800E and D5100, both these work like yours upto 30s after that I have to use a Shoestring Astronomy DSUSB connector between the camera and computer to get longer exposures


Just checked the D810a spec and you have the same 10 pin remote connection as my D800E. So I guess you’re going to need the DSUSB adapter. This allows exposures less than 30s too so you don’t have to keep swaping things around.


Thanks, I saw something about that searching he forum, but I also thought I read somewhere that the newer nikons did not need this?


I have a D810A as well, been working without any issues … just using the USB3 cable, hooking up to a USB2 hub …
I would try different cables/usb ports or hubs …
Anyway this combo should work …



What versions of sgp are two using? The d810a should only need a usb cable. We did recently update the Nikon libs for the 3.0 Beta.



Can I update my reply from earlier - my 800E DOES work with a single usb 3.0 cable although its not on the list of Nikon cameras that will work with a single usb connection in the SGP Nikon notes
I’m running 2.6.25


I am using v2.6.0.25 with a USB 3.0 cable.