Specifications

3-13
Interrogating the Instrument Status
Questionable Data Status Register Group
Interrogating Register Groups
The Questionable Data Status register group is interrogated using SCPI status commands.
The command format consists of:
“Command identifier:Register group identifier: Register title”
Interrogating the Condition and Event Registers
The Condition and Event registers are interrogated using the :CONDITION? and :EVENT
commands. See the following example:
Condition Register Query OUTPUT 718;“STATUS:QUESTIONABLE:CONDITION?”
ENTER 718;Question_con_reg
PRINT Question_con_reg
Event Register Query OUTPUT 718;“STATUS:QUESTIONABLE:EVENT?”
ENTER 718;Question_evt_reg
PRINT Question_evt_reg
Transition Filter
The Transition Filter state is set using the “:PTRANSITION” and “:NTRANSITION”
commands. The Transition Filter can be set to pass either positive transitions, negative
transitions or both.
NOTE The transition filter passes positive transitions by default. To turn this
off for the Questionable Data Transition Filter use:
OUTPUT 718;“STATUS:QUESTIONABLE:PTRANSITION 0”
Bit 12: 1st SYNC CYCLE: This bit is TRUE when synchronization is lost and when
the synchronization search algorithm is in its first cycle
through all possible synchronization positions. It becomes
FALSE when synchronization is gained, or after all
possible synchronization positions have been tried once
and the algorithm is about to repeat itself, whichever
occurs first.