Systems for signal conversion A signal converter transform one type of electrical signal into another. These include analog-to-digital and frequency-to-analog signals.Signal converters change the type of signals coming from industiral automation sensors so those signals can be read by other devices. n machines and installations, monitoring and evaluation of pulse sequences is often necessary. For evaluation in a control system, the generated signals must be preprocessed. The ifm range includes pulse dividers, pulse stretchers, frequency-to-current converters and units for switch-on and switch-off delay of signals. All units can be mounted on a rail.