National Instruments NI 6711 User Manual

Also see for DAQCard-6715: User manual User manual

Contents

National Instruments NI 6711 User Manual Manual pdf 59 page image

Chapter 5 Counters© National Instruments Corporation 5-5 Analog Output Series User ManualFigure 5-4 shows the timing requirements for the Ctr0Gate signal.Figure 5-4. Ctr0Gate Timing RequirementsCounter 0 Internal Output SignalThe Counter 0 Internal Output (Ctr0InternalOutput) signal is the output ofCounter 0. This signal reflects the terminal count (TC) of Counter 0. Thecounter generates a terminal count when its count value rolls over. Thetwo software-selectable output options are pulse on TC and toggle outputpolarity on TC. The output polarity is software-selectable for both options.Figure 5-5 shows the behavior of the Ctr0InternalOutput signal.Figure 5-5. Ctr0InternalOutput Signal BehaviorYou can use Ctr0InternalOutput in the following applications:• In pulse generation mode, the counter drives Ctr0InternalOutput withthe generated pulses. To enable this behavior, software configures thecounter to toggle Ctr0InternalOutput on TC.• Counter 0 and 1 can be daisy-chained together by routingCtr0InternalOutput to Ctr1Gate.Rising-EdgePolarityFalling-EdgePolaritytwt w = 10 ns minimumCtr0SourceCtr0InternalOutput(Pulse on TC)Ctr0InternalOutput(Toggle Output on TC)TC