Silent, rapid, motionless switching

摘要

Switching is at the heart of most electronic test systems. In special cases, it may be necessary to provide separate measuring instruments for all the signals of interest. However, it usually is technically feasible and much more economical to use switches to select groups of signals for connection to a small number of instruments. Once switches have been introduced into a test system, any switch imperfections will distort the signal. Of course, long wires may pick up noise, mismatched impedances can cause reflections, and the wrong type of cabling will restrict bandwidth. Your signal fidelity already may be hampered by these and other similar effects: Switch imperfections are in addition. compares the characteristics of several types of switches.