After about an hour and a half, talking to a phone through a serial port using visa generates the error in the subject field. I would estimate the previous communication messages that happened in that timeframe were approximately 1000. Upon choosing "retry", the test ran to completion. So this is an intermittent issue. Can anyone shed some light on the nature of this error, which could shed some light on how to stop it? Thanks.
Image of the error window is attached.
