Teledyne LeCroy X-STREAM OSCILLOSCOPES Remote Control - Manual (Page 149)

Remote Control Commands and Queries
WM-RCM-E Rev D ISSUED: February 2005
143
6. The QuerY Error bit (QYE) is set true (1) whenever (a) an attempt is made to read data from the
Output Queue when no output is either present or pending, (b) data in the Output Queue has
been lost, (c) both output and input buffers are full (deadlock state), (d) an attempt is made by the
controller to read before having sent an , (e) a command is received before the response to
the previous query was read (output buffer flushed).
7. The ReQuest Control bit (RQC) is always false (0), as the oscilloscope has no GPIB controlling
capability.
8. The OPeration Complete bit (OPC) is set true (1) whenever *OPC has been received, since
commands and queries are strictly executed in sequential order. The oscilloscope starts processing
a command only when the previous command has been entirely executed.