Instead of using the SATURN Sequence Timer as a stand-alone device it can also be combined in one chassis together with a SATURN Transient Recorder. This creates a highly flexible and powerful measuring system with integrated control unit. The control signals can be recorded synchronously with the measurement signals which allows a parallel in-depth analysis of input and output signals. Thanks to its compact design, this Sequencer also serves perfectly as a portable testing device for mobile use.
Functionality and Operation
The digital outputs of the Sequencer are being used to control a test facility and/or the device under test. The Sequencer monitors the digital inputs and adapts the generated output patterns based on the current state of the input signals. This also includes observations of the environment (doors, windows etc.) in order to realize a start qualifier or stop qualifier. If needed the Sequencer can be expanded with analog inputs which allow the use of analog triggers (e.g. thresholds, impulses and gradients in measurement signals).
The Sequencer includes an industrial PC with Microsoft WindowsTM operating system and is operated by means of the SATURN Sequencer - Cycle Timer software . The software provides a comfortable graphical user interface which makes it easy to set-up the Sequencer and to define the desired output pattern sequence. In addition to a straight sequential processing also loops and case statements (branches) are supported. After downloading to the on-board FPGA processor of the sequencer the programmed sequence is being executed independently from the operating system in real time.
The individual steps of a sequence are being processed using a high-precision hardware clock with a minimum step width of 10 ns and 20 ppm accuracy. For AC applications a resolution of 1/100 degree and better can be achieved. In addition the internal clock can also be synchronized with an externally applied generator frequency (16 2/3Hz, 50/60 Hz, 400Hz etc.).