CMS units running software versions 1.5.0-1.9.0
Solution for error messages related to CMS Oscilloscope.
Constant Monitoring System (CMS) application data locks up and displays an error message containing one of the following error descriptions:
niScope Multi Fetch
Upon clearing the error message, the CMS may go to a blue screen with an error code of “BAD_POOL_CALLER”.
The cause of this error message was due to a disruption in the communication between the oscilloscope and the cDAQ along the USB line. This disruption can be caused by excessive voltage input into the oscilloscope propagating through the USB line into the cDAQ, causing a lockup.
This issue can be resolved by installing 1) a voltage isolator (PN Entube DE-HB from Verivolt) on the input side of the oscilloscope and 2) a shielded USB cable with ferrites between the oscilloscope and cDAQ to replace the standard cable.
Submit your questions or requests using the Support Ticket Submission form.