GW Instek GDS-800 Series Programming Manual - Manual (Page 80)

GDS-806/810/820/840 Programming Manual
79
Queues
The output queue is included with this digital storage oscilloscope.
Output Queue: This digital storage oscilloscope store query responses in the output
queue by succeeding the IEEE 488.2 protocol. If the Digital storage oscilloscope
receives a lot of un-read query data simultaneously, the output buffer of Digital
storage oscilloscope will be covered repeatedly; for this moment, the output buffer
will generate errors probably. The computer must read a query response before it
sends the next command (or query) or it loses response to earlier queries.
When an error or event occurs, the output queue stores the message. The output
queue stores and reports the messages on a FIFO (first in first out) state.