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Appendix C Operation of the GPIB
© National Instruments Corporation C-7 GPIB-COM User Manual
Configuration Restrictions
To achieve the high data transfer rate that the GPIB is designed for, the physical distance between
devices and the number of devices on the bus is limited.
The following restrictions are typical:
• A maximum separation of 4 m between any two devices and an average separation of 2 m
over the entire bus.
• A maximum total cable length of 20 m.
• No more than 15 devices connected to each bus, with at least two-thirds powered-on.