Справочник Пользователя для National Instruments Welding System 321645c-01

Chapter 2

Function Reference — WFM_ClockRate

NI-DAQ FRM for PC Compatibles

2-406

©

 National Instruments Corporation

Sets an update rate and a delay rate for a group of analog output channels.

group is the group of analog output channels (see 

WFM_Group_Setup

).

Range:

1 for most devices.
1 or 2 for the AT-AO-6/10.

whichclock indicates the type of clock:

0:

The update clock (default).

1:

The delay clock.

2:

The delay clock prescalar 1 (E Series devices only).

3:

The delay clock prescalar 2 (E Series devices only).

Notice that you can program the delay clock only on the AT-MIO-16X, AT-MIO-64F-5, 
and E Series devices.

timebase is the timebase, or resolution, NI-DAQ uses in determining interval. timebase has 
the following possible values:

–4:

40 MHz clock used as a timebase (25ns) (DAQArb 5411 only).

–3:

20 MHz clock used as a timebase (50 ns) (E Series only).

–1:

5 MHz clock used as timebase (200 ns resolution) (AT-MIO-16F-5, 
AT-MIO-64F-5, and AT-MIO-16X only)

i16

assigned by configuration utility

i16

group of analog output channels

i16

the update or delay clock

i16

resolution

u32

timebase divisor

i16

enables the delay clock