Integrating IEEE 1149.1 Boundary Scan with Flying Probe Target Vectors
Integrating IEEE 1149.1 boundary scan with flying probe target vectors maximizes fault coverage on high-density PCBs while slashing test times and fixture costs.
Machine Execution Time
Processing Duration
Assembly cycles are calculated based on the time required for a machine to perform its primary function on a single board. For a pick and place system, machine execution time includes the picking of parts, the travel to the board, and the final placement. This metric excludes the time spent moving the board into and out of the work zone.
This value acts as the primary variable in determining the capacity of a specific station.
Movement Efficiency
Optimization software reduces the distance the placement head must travel between the feeders and the pads. A lower machine execution time is achieved by grouping components that use the same nozzle and minimizing the travel path. Mechanical limitations such as motor acceleration and vision alignment speed set the physical floor for this duration.
If the program is inefficient, the machine will dwell longer than necessary on each board. Monitoring systems track these times to identify if a machine is falling behind the rest of the line.
Throughput Limit
Fastest machines often wait for slower downstream processes in an unbalanced line. Improving the machine execution time only benefits the overall yield if that machine was the bottleneck. Precise timing data allows for accurate scheduling of production lots.