Create a process which generates fake data continuously, emulating the behavior of the XMIT-to-PCIe hardware. Actual communication with a PCIe card is not required. This process could be constructed to create both streams from a single crate - fake triggered and fake SN - pushing data to the SEB simultaneously just as will happen with the detector. streams. This PCIe-emulator can run in combination with a single real hardware crate, simulating a multi-crate environment before multiple crates are delivered to DAB. The development Development of the the "full" DAQ can then proceed SEB process data handling and be exercised with multiple in turn Assembler process data streams. handling proceeds using the fake data source.