National-instruments Data Acquisition Device E Series Manual de usuario Pagina 113

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 264
  • Tabla de contenidos
  • SOLUCIÓN DE PROBLEMAS
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 112
Chapter 5 Counters
E Series User Manual 5-8 ni.com
Figure 5-8 shows the timing requirements for the Ctr1Gate signal.
Figure 5-8. Ctr1Gate Signal Timing Requirements
Counter 1 Internal Output Signal
The Counter 1 Internal Output (Ctr1InternalOutput) signal is the output of
Counter 1. This signal reflects the terminal count (TC) of Counter 1. The
counter generates a terminal count when its count value rolls over. The
two software-selectable output options are pulse on TC and toggle output
polarity on TC. The output polarity is software-selectable for both options.
Figure 5-9 shows the behavior of the Ctr1InternalOutput signal.
Figure 5-9. Ctr1InternalOutput Signal Behavior
You can use Ctr1InternalOutput in the following applications:
In pulse generation mode, the counter drives Ctr1InternalOutput with
the generated pulses. To enable this behavior, software configures the
counter to toggle Ctr1InternalOutput on TC.
Ctr1InternalOutput can control the timing of analog output
acquisitions by driving ao/SampleClock.
Counter 0 and 1 can be daisy-chained together by routing
Ctr1InternalOutput to Ctr0Gate.
Rising-Edge
Polarity
Falling-Edge
Polarity
t
w
t
w
= 10 ns minimum
Ctr0Source
Ctr0InternalOutput
(Pulse on TC)
Ctr0InternalOutput
(Toggle Output on TC)
TC
Vista de pagina 112
1 2 ... 108 109 110 111 112 113 114 115 116 117 118 ... 263 264

Comentarios a estos manuales

Sin comentarios