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Instrument Control Overview

Module by: National Instruments

Summary: In this section, you will learn about instrument control.

You are not limited to the type of instrument that you control if you choose industry-standard control technologies. You can use instruments from many different categories, including serial, GPIB, VXI, PXI, computer-based instruments, Ethernet, SCSI, CAMAC, and parallel port devices. This lesson describes the two most common instrument communication methods, GPIB and serial port communication.

You must consider the following issues with PC control of instrumentation:

  • Type of connector (pinouts) on the instrument
  • Cables needed - null-modem, number of pins, male/female
  • Electrical properties involved - signal levels, grounding, cable length restrictions
  • Communication protocols used - ASCII commands, binary commands, data format
  • Software drivers available

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