A computer readable memory medium comprising program instructions for developing and testing a connectivity driver for an instrument is provided. The program instructions are executable by a processor to record transmissions to or from the instrument, place raw data from each recorded transmission into a primary field, and generate a secondary field associated with the primary field. The secondary field includes at least one of: a time that the transmission was transmitted at, a direction the transmission was transmitted in, a content of the transmission, and a state of the connectivity driver during the transmission. The program instructions are also executable by a processor to modify the content of the first or secondary fields, and play the modified transmission from computer readable memory medium in order to debug the communications software.
