Problem was encountered when reading the last column of patches with ColorPort and a DTP41. The symptom is that the DTP41 will stop pulling the strip through a couple inches past the last patch in the column. The instrument LED will flash green rapidly to signal an error and no data will be transferred to ColorPort software.
The error occurs because the instrument did not receive the updated strip definition for the last column. This can happen if the user starts to measure the last column before ColorPort has received all the data from the previous strip. Since the software is still receiving measurement data, it cannot tell the instrument that the next column is shorter than the previous ones.
The fix for this problem is to select one of the full length columns in the left pane of the ColorPort data capture window and then select the last column. This will prompt the software to transmit the updated strip definition to the DTP41 and the user will then be able to measure the last column. You may have to try a few times in order to read the partial column successfully. The same issue would occur with a DTP45.
Mt DTP41b/t exhibits a variation of this behavior. It won't read the last strip no matter what I do. It seems to read it (no fast flashing green light, but it never transmits the data to colorport. The workaround that you mentioned doesn't work either. Could the fact that I'm using a USB interface cable have something to do with it?
ReplyDeleteEDIT: last PARTIAL column. If I manipulate the target to have equal columns, it works fine, but that's a really ugly workaround.
ReplyDeleteI experienced that for RS232 connection and difficulty in patch reading may occur for some other columns as well. So your problem may not be due to USB interface.
ReplyDeleteEqual column: Agree. When last column is a full column, less problem.
I believe the problem is due to the recognition of the color patches. Randomizing the color patches does improve the recognition process significantly. I imported the randomized target layout with i1 profiler and so far, it works satisfactorily.