National Instruments NI 6612 - Page 8

Contents
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DO Pause Trigger Signal ..........................................................................................2-15
Using a Digital Pause Trigger........................................................................... 2-15
Routing DO Pause Trigger Signal to an Output Terminal................................2-15
I/O Protection....................................................................................................................2-16
DI Change Detection ........................................................................................................ 2-16
DI Change Detection Applications ...........................................................................2-17
Digital Filtering................................................................................................................. 2-17
Connecting Digital I/O Signals.........................................................................................2-20
Getting Started with DIO Applications in Software ......................................................... 2-21
Signal Integrity Considerations ........................................................................................2-22
Chapter 3
Counters
Counter Input Applications............................................................................................... 3-2
Edge Counting .......................................................................................................... 3-2
Channel Settings ............................................................................................... 3-2
Timing Settings................................................................................................. 3-3
Trigger Settings................................................................................................. 3-4
Other Settings ................................................................................................... 3-6
Exporting a Terminal Count Signal ..................................................................3-6
Cascading Counters .......................................................................................... 3-6
Pulse Measurement ................................................................................................... 3-6
Create Channel..................................................................................................3-7
Channel Settings ............................................................................................... 3-7
Timing Settings................................................................................................. 3-8
Trigger Settings................................................................................................. 3-9
Other Settings ................................................................................................... 3-10
Semi-Period Measurement........................................................................................ 3-10
Settings.............................................................................................................. 3-10
Frequency Measurement........................................................................................... 3-11
Frequency Measurement Considerations.......................................................... 3-11
Frequency Measurement Methods.................................................................... 3-12
Period Measurement ................................................................................................. 3-19
Pulse-Width Measurement........................................................................................ 3-19
Channel Settings ............................................................................................... 3-20
Timing Settings................................................................................................. 3-20
Trigger Settings................................................................................................. 3-21
Other Settings ................................................................................................... 3-22
Two-Edge Separation ............................................................................................... 3-22
Channel Settings ............................................................................................... 3-23
Timing Settings................................................................................................. 3-23
Trigger Settings................................................................................................. 3-24
Other Settings ................................................................................................... 3-25