NI and Astronics Test Systems Inc., (ATS) a wholly-owned subsidiary of Astronics Corp. announced the Astronics PXIe-6943 Digital Test Instrument, Astronics PXIe-3352 Rubidium Clock Source and Astronics PXIe-1209 Pulse Pattern Generator. The three new test instruments accompany the previously released Astronics PXIe-2461 Frequency Time Interval Counter and are the latest products from NI and Astronics’ collaboration to provide PXI-based instruments with test program set-(TPS-) compatible software for existing VXI instruments.