beautypg.com

GW Instek GDS-800 Series Programming Manual User Manual

Page 80

background image

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.