Test - Integrate - Control

SVF Mode

SVF Mode allows TSC to work with simulation platforms where simulated time progresses at a different rate from real time. Simulated time can pause, resume, accelerate or slow down, and timers in TSC (telecommand verification, test sequence scripts) will change correspondingly.
SVF mode (SVF = Software Validation Facility) is designed for use with simulation tools like SVF’s, operational simulators, or avionics simulators in which simulated time does not necessarily progress at the same rate as wall-clock time. Simulated time can pause, resume, speed up or slow down.

When using TSC with a simulator, timers in the telecommand verification, and test sequence timers can be made to “follow” an external time pulse containing the OBT. This pulse is expected to be generated in a UDP packet. The UDP packet can be broadcast (in case there are multiple TSC clients, or several elements in the simulation platform)

If the time pulse stops arriving, TSC timers stop expiring. If the pulse resumes, TSC timers resume. The OBT pulse packet can speed up (number of pulses per second) or slow down, or if desired the OBT expressed in the pulse can advance by a varying rate with each pulse. The user can choose the most appropriate approach as desired.

Although it is normally expected for the simulation platform to generate a UDP packet containing the OBT pulses, TSC can also generate the OBT pulse (in case TSC is the master time synchronisation source, or for test scenarios)

Further information can be found in the TSC online help or user manual