For example: Agilent E4440A or Anritsu 68369
National Instruments Data Acquisition Systems
National Instruments 776844-01-SCB-68
Shielded I/O Connector Block for DAQ Devices with 68-Pin Connectors
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Manufacturer: National Instruments
National Instruments BNC-2110
Shielded Connector Block with BNC for X Series and M Series
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Manufacturer: National Instruments
National Instruments PXI-5404
PXI-5404 100 MHZ FREQUENCY GENERATOR
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Manufacturer: National Instruments
National Instruments PXI-5922
PXI-5922 24-BIT FLEXIBLE RESOLUTION Oscilloscope/DIGITIZER
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Manufacturer: National Instruments
National Instruments PXI-6255
6-Bit, 1.25 MS/s(Max), 750 kS/s(Scanning), 80 Analog Inputs card
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Manufacturer: National Instruments