We use the DT9805 as the data acquisition module of a fire testing instrument. The tests carried out by this instrument are destructive and often at considerable material cost to our end users. We are experiencing a number for customer complaints due to the fact that the DT9805 USB connection drops on average once an hour for our end users causing them considerable problems. This is on a newly supplied instrument.. Tests carried out at the factory with other new, out of the box DT9805 units confirm this problem. We are testing with a direct connection to the PC (i.e. no hub) and have had similar results for both USB 2 and 3 ports. The problem is observed using both our own software and also Measurement Computing's Quick Daq software. In both cases the failure mode is the same. The application freezes and cannot be killed from Task Manager (Access denied). In device manager the DT9805 device disappears and is replaced by an unknown device which Windows marks as a bad device.
Driver version is 7.0.0.8 15/1/2019 which appears to be the latest on your site.
Open Layers version is 7.8.9
This is a problem which has been experienced many times in the past and for which we have never been given a satisfactory solution. However this customer has now escalated to director level and a fix is now imperative for us. The difference is now that we have the problem being reqularly observed with QuickDaq software on several examples of the unit. I have attached some screenshots illustrating the failure mode
Please advise how this matter may be resolved quickly
Question
PaulGruet
Hi ,
We use the DT9805 as the data acquisition module of a fire testing instrument. The tests carried out by this instrument are destructive and often at considerable material cost to our end users. We are experiencing a number for customer complaints due to the fact that the DT9805 USB connection drops on average once an hour for our end users causing them considerable problems. This is on a newly supplied instrument.. Tests carried out at the factory with other new, out of the box DT9805 units confirm this problem. We are testing with a direct connection to the PC (i.e. no hub) and have had similar results for both USB 2 and 3 ports. The problem is observed using both our own software and also Measurement Computing's Quick Daq software. In both cases the failure mode is the same. The application freezes and cannot be killed from Task Manager (Access denied). In device manager the DT9805 device disappears and is replaced by an unknown device which Windows marks as a bad device.
Driver version is 7.0.0.8 15/1/2019 which appears to be the latest on your site.
Open Layers version is 7.8.9
This is a problem which has been experienced many times in the past and for which we have never been given a satisfactory solution. However this customer has now escalated to director level and a fix is now imperative for us. The difference is now that we have the problem being reqularly observed with QuickDaq software on several examples of the unit. I have attached some screenshots illustrating the failure mode
Please advise how this matter may be resolved quickly
Best regards
Paul Gruet
DeviceError.txt
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