beautypg.com

Other internal source mode, Figure 7-36. other internal source mode, External source mode – National Instruments Network Device DAQ S User Manual

Page 111: Figure 7-37. external source mode

background image

Chapter 7

Counters

© National Instruments Corporation

7-39

NI 6124/6154 User Manual

Other Internal Source Mode

In other internal source mode, the device synchronizes signals on the
falling edge of the source, and counts on the following rising edge of the
source, as shown in Figure 7-36.

Figure 7-36. Other Internal Source Mode

External Source Mode

In external source mode, the device generates a delayed Source signal by
delaying the Source signal by several nanoseconds. The device
synchronizes signals on the rising edge of the delayed Source signal, and
counts on the following rising edge of the source, as shown in Figure 7-37.

Figure 7-37. External Source Mode

Source

Synchronize

Count

Source

Delayed Source

Synchronize

Count