Specifications

5-50
System Command Reference Section
Instrument Status
Instrument Status
The status conditions that the error detector needs to report are partly covered by the pre-
defined status registers of IEEE 488.2 and SCPI.
Refer to chapter 3 Interrogating the Instrument Status for a more detailed discussion on
the use of query commands described below.
The set commands are used to:
a. Configure the PTRansition and NTRansition filters in each group in order to determine
which transitions to bits within the CONDition register cause an event to be latched
into the corresponding bit of the EVENt register for that group,
b. Configure the ENABle register to determine which events will be propagated into the
summary bit in the Status Byte (or, when applicable, from the Clock LOSS EVENt
register into the bit 9 of the QUEStionable CONDition register).
The query commands are used to:
a. Query the currently configured masks within the PTRansition, NTRansition or
ENABle registers.
b. Query the current CONDition register contents.
c. Query the current EVENt register contents.
STATus:OPERation:[EVENt|CONDition|ENABle|PTRansition|
NTRansition]
The bits in this register permit the operational status of the error detector to be
interrogated. All bits are CONDITION bits, except for BIT ERROR and END PERIOD
which are EVENT bits.
Refer to table 3-6 on page 3-15 for a detailed definition of the bits within the operational
status register group.
STATus:QUEStionable:[EVENt|CONDition|ENABle|PTRansition|
NTRansition]
The bits in this register indicate that a signal is of questionable quality.
Refer to table 3-5 on page 3-12 for a detailed definition of the bits within the questionable
status register group.