National Instruments DAQ PCI E Series User Manual page 130

Appendix C Common Questions
Timing and Digital I/O
PCI E Series User Manual
What types of triggering can be hardware-implemented on my
PCI E Series board?
Digital triggering is hardware-supported on every PCI E Series board.
In addition, the PCI-MIO-16E-1, PCI-MIO-16E-4, PCI-MIO-16XE-10,
PCI-6031E, PCI-6032E, PCI-6033E, and PCI-6071E support analog
triggering in hardware.
What added functionality does the DAQ-STC make possible in
contrast to the Am9513?
The DAQ-STC incorporates much more than just 10 Am9513-style
counters within one chip. In fact, the DAQ-STC has the complexity of
more than 24 chips. The DAQ-STC makes possible PFI lines, analog
triggering, selectable logic level, and frequency shift keying. The
DAQ-STC also makes buffered operations possible, such as direct
up/down control, single or pulse train generation, equivalent time
sampling, buffered period, and buffered semiperiod measurement.
What is the difference in timebases between the Am9513
counter/timer and the DAQ-STC?
The DAQ-STC-based MIO boards have a 20 MHz timebase. The
Am9513-based MIO boards have a 1 MHz or 5 MHz timebase.
Will the counter/timer applications that I wrote previously work
with the DAQ-STC?
If you are using NI-DAQ with LabVIEW, some of your applications
drawn using the CTR VIs will still run. However, there are many
differences in the counters between the PCI E Series and other boards;
the counter numbers are different, timebase selections are different, and
the DAQ-STC counters are 24-bit counters (unlike the 16-bit counters
on boards without the DAQ-STC).
If you are using the NI-DAQ language interface or LabWindows/CVI,
the answer is no, the counter/timer applications that you wrote
previously will not work with the DAQ-STC. You must use the GPCTR
functions; ICTR and CTR functions will not work with the DAQ-STC.
The GPCTR functions have the same capabilities as the ICTR and CTR
functions, plus more, but you must rewrite the application with the
GPCTR function calls.
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