Hello, I have been trying to align the photodiode changes to event codes, to get very precise timing when stimulus is presented on the screen. However, I ran into some problems as there is no stable photodiode change for event code 9 and 18. In some trials, photodiode change to event code 18, and some trials there is no change. This makes it difficult to align the photodiode signal to which evby mary_hong - Questions and Answers
Thank you for the suggestions Jaewon! The Blackrock rising edge/falling edge require Strobe bit. After many troubleshooting, we figure out that it's the digital input settings of Blackrock. I only connected 8 channels(channel 0 is strobe and channel1-7 is event codes) of DAQ digital output to Blackrock for sending the behavioral codes, since the max event code is less than 127. So theby mary_hong - Questions and Answers
The sampling rate of Blackrock is 30k/s. The digital input option on Blackrock match the option in ML, i.e. on bit changes for send and clear in ML; on rising edge for rising edge in ML; and on falling edge for falling edge in ML. ---"What do you mean by "they will occur at the same time of the original behavioral code"? Are their Blackrock timestamps exactly the same?" Soby mary_hong - Questions and Answers
Hello, I connected Monkeylogic to the data acquisition system, Blackrock via NIDAQ box, and send the event codes and strobes to Blackrock. When looking at the event codes received, I found sometimes there are extra codes. These extra codes are not always the behavioral codes that I set in the script, and they will occur at the same time of the original behavioral code. I made sure that theby mary_hong - Questions and Answers