What Are The Differences Between a PFI Line and an APFI Line?

Updated Nov 10, 2017

Issue Details

I recently upgraded my application from NI 60xxE (formerly E Series) to NI 62xx (formerly M Series), and noticed the use of the terminology "APFI" for trigger lines. When does triggering require use of a PFI line versus an APFI line? What are the differences between these triggering lines?
 

Solution

With NI 62xx M Series boards, the analog trigger line is now called APFI (analog programmable function input), while the digital triggering still occurs on the PFI lines. Whereas with NI 60xxE E Series boards, both analog and digital triggering may be performed with PFI 0. In other words, PFI 0 no longer doubles as a digital and analog trigger for M-series, as is the case for E-series.

There are M-series devices with two connectors, such as the 625x and 628x, that have an APFI line present on both connectors (APFI 0 and APFI 1). Either the APFI 0 or APFI 1 terminal can be used as an analog trigger, but not both at the same time. They exist on both lines to allow access to an APFI line on both connectors.

WAS THIS ARTICLE HELPFUL?

Not Helpful