User`s guide
228   
Using the Pattern Generator
Building Test Vectors and Functions
Break. The Break instruction causes a break at the current vector. In 
single run mode, this instruction halts the sequence and holds the 
outputs at the break vector's value. In repetitive run mode, this 
instruction pauses the sequence at the current vector momentarily, 
then continues.
NOTE: When operating at 200 MHz you can not have 2 Break events in succession. 
This also includes the Wait event.
Signal IMB. The Signal IMB instruction creates a signal for the IMB 
bus of the 1670G-series at the current vector, allowing the pattern 
generator to trigger the state or timing analyzers. Multiple signal IMB 
instructions may be placed in the sequence, but only the first signal 
IMB will be executed.
Wait Event. The Wait Event instruction halts the execution of the 
program sequence until the event is received by the hardware. 
Selecting this instruction brings up a pop-up menu that lets you set 
four data patterns and select one of them or an IMB signal as the event 
the pattern generator is waiting for.
An external wait event is the ORing of the three input lines on the clock 
pod. The first wait IMB is the only one recognized because IMB does 
not allow pulsing.
NOTE: When operating at 200 MHz you can not have 2 Wait events in succession. This 
also includes the Break event.
If Event. The If Event instruction is only available in Full Channel 100 
Mbit/s mode with clock frequencies of 50 MHz and lower. Only one If 
Event is allowed in a sequence program. If a new if instruction is placed 
in a program sequence, a message will appear stating that only one if 
instruction is allowed. To add a new if instruction, the old one must be 
deleted.










