Automatic trigger Sample Clauses

Automatic trigger. An Address Counter 90 supplied the address bits to the buffer memory. When the system was in the Sample mode (controlled by the Sample/Send select switch) the memory had a 12-bit data bus and the address went up to 32768. However, when the system was in the Send mode, the memory had an 8-bit data bus and the address went up to 65536. The counter was incremented by a Clock Generator 92, counting up every clock cycle, updating the location of memory to be written to or read from. When a trigger T (either automatic or manual) was supplied to a Trigger Control subsystem 94, this subsystem initiated the operation controlled by the Sample/Send switch. It told Enable Logic 96 to start providing the necessary control signals, and the Address Counter 90 to start counting addresses. When the count in the address counter reached its final value (32768 for Sample state, 65536 for Send state), the Trigger Control signaled the Enable Logic to disable the control signals, thus completing the Sample or Send operations. The Enable Logic enabled the AID converter, the 12-bit memory data bus, and generated the Write signal to the memory, synchronously with the clock, when the system was in the Sample mode. It enabled the UART, the 8-bit memory bus, bus multiplexer control, and the Read signals to the memory and to the UART, synchronously with the clock, when the system was in the Send mode. Finally, it disabled all the control signals when the Trigger Control subsection produced an End-of-Operation signal. The Clock Generator produced both the sampling clock and the baud rate clock. Which clock was generated was controlled by the Sample/Send switch. Another requirement of the present invention is to determine the transmission characteristics of acoustic waves through the pipeline so that analysis can reveal the distance of an acoustic leak signal from a transducer, and advantageously interpolate the distance of the leak between two adjacent transducers along the pipeline. Thus the present invention must provide both discrimination and identification of the acoustic signal which is characteristic of a leak, determining, that a leak has taken place, and also determine the location of the leak. The acoustic attenuation in bounded solids is complicated by mode changes at boundaries. In the case of this invention, a leak generates an acoustic wave of unknown properties in the pipeline metal wall. Neither the modes of oscillation or the original angle of incidence with the wall ar...