National Instruments NI 6238 用户手册

Figure 7-1.  M Series Counters

The counters have seven input signals, although in most applications only 
a few inputs are used.

For information on connecting counter signals, refer to the 

 section.

Counter 0 

Counter 0 Source (Counter 0 Timebase) 

Counter 0 Aux 

Counter 0 HW Arm 

Counter 0 A 

Counter 0 B (Counter 0 Up_Down) 

Counter 0 Z 

Counter 0 Gate 

Counter 0 Internal Output 

Counter 0 TC 

Input Selection Muxes 

Frequency Generator 

Frequency Output Timebase 

Freq Out 

Input Selection Muxes 

Counter 1 

Counter 1 Source (Counter 1 Timebase) 

Counter 1 Aux 

Counter 1 HW Arm 

Counter 1 A 

Counter 1 B (Counter 1 Up_Down) 

Counter 1 Z 

Counter 1 Gate 

Counter 0 Internal Output 

Counter 0 TC 

Input Selection Muxes