HP 8753E - HP-IB Bus Structure; Data Bus; Handshake Lines

HP-IB Bus Structure
Figure l-l. HP-IB Bus Structure
Data Bus
The data bus consists of 8 bi-directional lines that are used to transfer
data from one device to another. Programming commands and data
transmitted on these lines are typically encoded in ASCII, although
binary encoding is often used to speed up the transfer of large arrays.
Both ASCII- and binary-data formats are available to the analyzer. In
addition, every byte transferred over HP-II3 undergoes a handshake to
insure valid data.
Handshake Lines
A three-line handshake scheme coordinates the transfer of data between
talkers and listeners. ‘lb insure data integrity in multiple-listener
transfers, this technique forces data transfers to occur at the transfer
1-16 HP-IB Programmi
ng and Command Reference Guide