Model 7002Switch System Instruction Manual - Advanced Test ...

IEEE-488 ReferenceAlwaysZeroSeq1(B15) (B14 - B2) (B1) (B0)0Trigger EventCondition RegisterSeq1(B15) (B14 - B2) (B1) (B0)0PTRNTRTrigger EventTransition FilterSeq1(B15) (B14 - B2) (B1) (B0)0Trigger EventStatus RegisterOR&&To Waiting for TriggerBit (Trig) of OperationEvent Condition Register(See Figure 5-7).Seq1(B15) (B14 - B2) (B1) (B0)Trigger Event StatusEnable RegisterSeq 1 = Sequence 1 (Set bit indicates that the7002 is in the Trigger Layer)& = Logical ANDOR = Logical ORPTR = Positive Transition RegisterNTR = Negative Transition RegisterFigure 5-10Trigger event statusTrigger Event Transition Filter — The transition filter ismade up of two 16-bit registers that are programmed by theuser. It is used to specify which transition (0 to 1, or 1 to 0)of bit B1 in the Trigger Condition Register will set bit B1 inthe Trigger Event register.The filter can be programmed for positive transitions (PTR),negative transitions (NTR) or both. When an event bit is programmedfor a positive transition, the event bit in the TriggerEvent Register will set when the corresponding bit in theTrigger Condition Register changes from 0 to 1. Conversely,when programmed for a negative transition, the bit in the statusregister will set when the corresponding bit in the conditionregister changes from 1 to 0.The transition filter registers can be set or cleared by usingthe following SCPI commands::STATus:OPERation:TRIGger:PTRansition :STATus:OPERation:TRIGger:NTRanstion 5-17