Gpctr1_Out Signal; Figure 4-34. Gpctr1_Gate Signal Timing In Edge-Detection Mode; Figure 4-35. Gpctr1_Out Signal Timing - National Instruments DAQ PCI E Series User Manual

Chapter 4 Signal Connections
Rising-edge
polarity
Falling-edge
polarity
GPCTR1_SOURCE
GPCTR1_OUT
(Pulse on TC)
GPCTR1_OUT
(Toggle output on TC)
PCI E Series User Manual
actions as starting and stopping the counter, generating interrupts,
saving the counter contents, and so on.
As an output, the GPCTR1_GATE signal monitors the actual gate
signal connected to general-purpose counter 1. This is true even if the
gate is being externally generated by another PFI. This output is set to
tri-state at startup.
Figure 4-34 shows the timing requirements for the GPCTR1_GATE
signal.

Figure 4-34. GPCTR1_GATE Signal Timing in Edge-Detection Mode

GPCTR1_OUT Signal

This signal is available only as an output on the GPCTR1_OUT pin.
The GPCTR1_OUT signal monitors the TC board general-purpose
counter 1. You have two software-selectable output options—pulse on
TC and toggle output polarity on TC. The output polarity is software
selectable for both options. This output is set to tri-state at startup.
Figure 4-35 shows the timing requirements for the GPCTR1_OUT
signal.

Figure 4-35. GPCTR1_OUT Signal Timing

t
w
t
= 10 ns minimum
w
TC
4-44 © National Instruments Corporation