Tektronix AFG2021 Programmer's Manual page 123

AFG2021 Arbitrary Function Generator Programmer Manual
Table 3-1: SBR bit functions (cont.)
Bit
6
5
4
3
2
1-0
Standard Event Status Register (SESR). The SESR records eight types of events
that can occur within the instrument as shown in the following figure.
Figure 3-3: The Standard Event Status Register (SESR)
Function
MSS
ESB
MAV
QSB
EQS
—–
Status and Events
Master Status Summary.
When the instrument is
accessed using the *STB?
query, this bit is called the
Master Status Summary
(MSS) bit and indicates that
the instrument has issued a
service request for one or
more reasons. The MSS bit
is never cleared to 0 by the
*STB? query.
Event Status Bit. This bit
indicates whether or not
a new event has occurred
after the previous Standard
Event Status Register
(SESR) has been cleared or
after an event readout has
been performed.
Message Available Bit. This
bit indicates that a message
has been placed in the
output queue and can be
retrieved.
Questionable Status Bit.
Error/Event Queue
Summary.
Not used
3-5