DATA MONITORING APPARATUS AND METHOD

摘要

A data signal capturing interface permits a personal computer to be used for displaying data transmitted between other devices at a speed such as 125,000 baud. This interface forms part of a data scope that further comprises: a connector cable for connecting into the data transmission system so that the data signals are also communicated through the connector cable to the data signal capturing interface that is connected to the connector cable, and a personal computer connected to the data signal capturing interface for displaying data signals stored in the data signal capturing interface. A method of monitoring data signals transmitted between at least two devices over a local area network cable connecting the devices at an oil or gas well site comprises: copying transmitted data signals into a memory at the well site at a speed at least equal to a speed at which the data signals are transmitted on the local area network cable; and displaying at the well site on a monitor of a personal computer representations of the copied data signals.