We like to use the PCI-6541 to generate data only when instructed by
some hardware. This hardware can either give an enable signal that
indicates that it expects data or we can gate a clock so that only when
this clock line transitions, the PCI-6541 should give data.
Gated clock
We have been looking into the documentation and saw (in the NI Digital
Waveform Generator/Analyzer Help file, section clocking) that the
CLK_IN signal from the connector can be used as Pattern Generation
sample clock, but in the PCI-6541 datasheet is mentioned that the clock
requirements for CLK_IN are "Clock must be continuous and free-running".
Does this mean that we can not use the CLK_IN with a gated clock for generation? (we can use STROBE for acquisition)
Enable signal
I have checked the NI Digital Waveform Generator/Analyzer Help file but
there seems to be no provision for a enable generation signal.
There is a pause trigger, but it is unknown to me from the
documentation how to continue after pausing. From the documentation it
is also not clear to me if a script can be used to minic a level based
enable signal (so: generate data while the enable signal is high, stop
generating data when the enable signal is low)
