Output Queue - Agilent Technologies 4155C Command Reference Manual

Status Reporting Structure

Output Queue

Output Queue
The Output Queue stores response messages until they are read. If an unread
message exists, Bit4 (Message Available - MAV) of the Status Byte Register is set to
1. So, Bit4 is used to synchronize information exchange with the controller. Refer to
Figure 3-5.
Figure 3-5 Output Queue
The Response Formatter places Data Byte Messages and END messages into the
Output Queue in response to query commands. These messages are removed from
the Output Queue as they are read by the controller. As long as the Output Queue
contains an unread message, MAV is 1.
Agilent 4155C/4156C SCPI Command Reference, Edition 1 3-9