User`s guide

506 Appendix B
Status Reporting System
General Status Register Model
General Status Register Model
The Agilent E5061A/E5062A has a status reporting system to report the condition of the
instrument.
Figure B-1 General status register model
The status reporting system has a hierarchical structure as shown in Figure B-1. When the
instrument satisfies a particular condition, the corresponding bit of the event register is set
to 1. Therefore, you can check the instrument status by reading the event register.
When the event register bit is set to “1” and a corresponding enable register bit (a bit
marked with an arrow in Figure B-1) is also “1,” the summary bit of the status byte register
is set to “1.” You can read the status byte register by using the serial poll.
If the bit of the service request enable register is “1,” a service request (SRQ) is generated
by the positive transition of the corresponding status byte register bit. By generating SRQ,
you can notify the controller that the E5061A/E5062A is requesting service. In other
words, interruption by SRQ can be programmed. For more information on using SRQ, see
“Using the Status Register” on page 84 in Chapter 5, “Making a Measurement,” or “Using
the status reporting system” on page 166 in Chapter 11, “Working with Automatic Test
Systems.”