User manual

Appendix C Common Questions
NI 6034E/6035E/6036E User Manual C-4 ni.com
Timing and Digital I/O
What types of triggering can be hardware-implemented on my
NI 6034E/6035E/6036E device?
Digital triggering is hardware-supported on the NI 6034E/6035E/6036E
device.
Do 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 do still run. However, there are many differences in the
counters between the NI 6034E/6035E/6036E device and other devices.
The counter numbers are different, timebase selections are different, and
the DAQ-STC counters are 24-bit counters (unlike the 16-bit counters on
devices without the DAQ-STC).
If you are using the NI-DAQ language interface or LabWindows/CVI, the
counter/timer applications that you wrote previously do not work with the
DAQ-STC. You must use the GPCTR functions; ICTR and CTR functions
do 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.
I am using one of the general-purpose counter/timers on my device, but
I do not see the counter/timer output on the I/O connector. Why?
If you are using the NI-DAQ language interface or LabWindows/CVI, you
must configure the output line to output the signal to the I/O connector. Use
the
Select_Signal
function in NI-DAQ to configure the output line. By
default, all timing I/O lines except EXTSTROBE* are tri-stated.
What are the PFIs and how do I configure these lines?
PFIs are Programmable Function Inputs. These lines serve as connections
to virtually all internal timing signals.
If you are using the NI-DAQ language interface or LabWindows/CVI, use
the
Select_Signal
function to route internal signals to the I/O connector,
route external signals to internal timing sources, or tie internal timing
signals together.
If you are using NI-DAQ with LabVIEW and you want to connect external
signal sources to the PFI lines, you can use AI Clock Config, AI Trigger
Config, AO Clock Config, AO Trigger and Gate Config, CTR Mode
Config, and CTR Pulse Config advanced-level VIs to indicate which
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