How Many GPIB USB Controllers Can I Use At Once? Primary Software: Driver Software>>NI-488.2Primary Software Version: 2.4 Primary Software Fixed Version: N/A Secondary Software: N/A Hardware: GPIB>>External Controllers/Convertors>>GPIB-USB-HS, GPIB>>External Controllers/Convertors>>GPIB-USB-B
Problem: I need to use multiple GPIB busses. How many GPIB-USB-B or GPIB-USB-HS controllers can I use in a PC at the same time? Solution: The NI-488.2 driver can support up to 100 GPIB controllers of various types at the same time. The main limiting factor with the GPIB-USB-B and GPIB-USB-HS is the amount of power available from the USB controller on the computer, especially with laptop computers. The GPIB-USB-B specifies a maximum power consumption of 200 mA, and the GPIB-USB-HS specifies a maximum power consumption of 500 mA. If the USB controller in the computer is unable to supply the current needed, then a self-powered USB hub can be used to provide the additional power needed for the USB devices. Related Links: Products & Services: NI GPIB-USB-HS Products & Services: NI GPIB-USB-B KnowledgeBase 22492O8F: Why Will USB-Based Devices Not Run on Bus-Powered Hubs? KnowledgeBase 0KHBCNRV: Maximum Number of GPIB-ENET and GPIB-ENET/100 Interfaces and Devices Supported by Operating System Attachments:
Report Date: 12/13/2005 Last Updated: 12/16/2005 Document ID: 3SCIKDIM |
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