National Instruments Welding System 321645c-01 Manual De Usuario

Chapter 2

Function Reference — CTR_Period

©

 National Instruments Corporation

2-99

NI-DAQ FRM for PC Compatibles

10:

SOURCE5 used as timebase if 1 

≤

 ctr 

≤

 5 or SOURCE 10 used as timebase 

if 6

≤

ctr 

≤

 10.

11:

GATE 1 used as timebase if 1 

≤

 ctr 

≤

 5 or GATE6 used as timebase if 

6

≤

≤

10.

12:

GATE 2 used as timebase if 1 

≤

 ctr 

≤

 5 or GATE7 used as timebase if 

6

≤

≤

10.

13:

GATE 3 used as timebase if 1 

≤

 ctr 

≤

 5 or GATE8 used as timebase if 

6

≤

≤

10.

14:

GATE 4 used as timebase if 1 

≤

 ctr 

≤

 5 or GATE9 used as timebase if 

6

≤

≤

10.

15:

GATE 5 used as timebase if 1 

≤

 ctr 

≤

 5 or GATE10 used as timebase if 

6

≤

≤

10.

Set timebase to 0 to concatenate counters. Set timebase to 1 through 5 for the counter to 
count one of the five available internal signals. Set timebase to 6 through 15 (except 10 for 
the PC-TIO-10) to provide an external signal to a counter. This external signal becomes the 
signal NI-DAQ counts for event counting. 

CTR_Period

 configures the specified counter for period and pulse-width measurement. The 

function configures the counter to count up from zero and to use the gating mode, edge mode, 
output type, and polarity as specified by the 

CTR_Config

 call.

Applications for 

CTR_Period

 are discussed in the section Period and Continuous 

Pulse-Width Measurement Applications in Chapter 3, Software Overview, of the NI-DAQ 
User Manual for PC Compatibles.