GPIB
370B User Manual 4-5
Transmitting and Receiving Data. Most instruments talk (send data) or listen
(receive data) to the system controller. The 370B does both. In fact the 370B
sends and receives two classes of data: instrument setups and measurement
results. There are various ways of coding such data. The 370B, in keeping with
Tek Codes and Formats, uses English key-words for setup and status data and a
combination of similar key-words and a form of binary-coded numbers for
measurement data.
Handling Interrupt. The 370B and other devices in the system can generate
interrupts to inform the controller of conditions warranting some sort of
attention, such as an error condition or the completion of an operation. The
controller polls the devices on the bus to find the source of the interrupt, reads its
status, and takes appropriate action.
Data Processing. Still another major task of a GPIB system controller is
processing the data acquired from instruments. Examples might be extracting
key parameters from a family of curves and deciding whether some pass-fail
criterion has been exceeded.
Display and Storage. Once data has been sent to the controller it can be stored or
displayed, as well as processed. The controller console screen is one place data
may be displayed.
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General