National Instruments cDAQ-9172 User Manual Page 28
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NI cDAQ-9172 User Guide and Specifications 28 ni.com
Getting Started with AI Applications in Software
You can use the NI cDAQ-9172 chassis in the following analog input
applications:
• Single-Point
•Finite
• Continuous
For more information about programming analog input applications and
triggers in software, Refer to the NI-DAQmx Help or the LabVIEW Help in
version 8.0 or later for more information.
The NI-DAQmx Help is available after installation from Start»
All Programs»National Instruments»NI-DAQ»NI-DAQmx Help.
To view the LabVIEW Help, in version 8.0 or later, select Help»
Search the LabVIEW Help in LabVIEW. Alternately, to download
the LabVIEW Help, go to
ni.com/manuals.
Analog Output
To generate analog output, insert an analog output C Series I/O module in
any slot on the NI cDAQ-9172 chassis. The generation specifications, such
as the number of channels, channel configuration, update rate, and output
range, are determined by the type of C Series I/O module used. For more
information, refer to the documentation included with your C Series I/O
modules.
You can run one hardware-timed (waveform) analog output task at a time
on the NI cDAQ-9172 chassis, with up to 16 waveform channels. At the
same time, you can also run one or more software-timed (single-point or
immediate) tasks.
For each analog output module, you can either:
• Assign all of the channels on the module to the hardware-timed task.
• Assign all of the channels on the module to one or more
software-timed tasks.
On a single AO module, you cannot assign some channels to a
hardware-timed task and other channels (on the same module) to
a software-timed task.
Analog Output Data Generation Methods
When performing an analog output operation, you either can perform
software-timed or hardware-timed generations. Hardware-timed
generations must be buffered.
- NI cDAQ-9172 1
- Introduction 4
- Safety Guidelines 5
- Related Documentation 6
- LV_Getting_Started.pdf 7
- Training Courses 9
- Technical Support on the Web 9
- Installing the Software 10
- Installing the NI cDAQ-9172 11
- Mounting the NI cDAQ-9172 12
- NI 9901 Desktop Mounting Kit 12
- NI 9910 DIN-Rail Kit 13
- NI 9905 Panel Mount Kit 13
- 87654321 14
- Setting Up the NI cDAQ-9172 15
- Understanding LED Indications 17
- Using the NI cDAQ-9172 18
- Analog Input 20
- Using a Digital Source 21
- Using an Analog Source 22
- AI Sample Clock Timebase 25
- Simultaneous Sample-and-Hold 26
- Sigma-Delta 26
- Slow Sample Rate Modules 27
- Analog Output 28
- Buffered Analog Output 29
- Analog Output Triggering 30
- Analog Output Timing Signals 31
- AO Sample Clock 31
- AO Start Trigger Signal 31
- Digital I/O 35
- Static DIO 36
- DI Sample Clock Signal 36
- Using an Internal Source 37
- Using an External Source 37
- Change Detection Event 39
- Terminal 39
- Change Detection Acquisition 39
- Counters 40
- Counter Input Applications 42
- Counting Edges 42
- Pulse-Width Measurement 44
- Single Period Measurement 46
- Buffered Period Measurement 47
- Semi-Period Measurement 48
- Frequency Measurement 49
- (Averaged) 50
- Two Counters 51
- X1 Encoding 54
- X2 Encoding 55
- X4 Encoding 55
- Channel Z Behavior 56
- Counter Output Applications 59
- Simple Pulse Generation 59
- Pulse Train Generation 61
- Using the Frequency Generator 62
- Frequency Division 63
- Counter Timing Signals 63
- Counter n Source Signal 64
- Counter n Gate Signal 65
- Counter n Aux Signal 65
- Counter n Up_Down Signal 66
- Counter n HW Arm Signal 66
- Frequency Output Signal 67
- Default Counter/Timer Routing 68
- Counter Triggering 68
- Other Counter Features 69
- Cascading Counters 69
- Counter Filters 69
- Prescaling 70
- (No Duplicate Counting) 71
- (Duplicate Counting) 72
- Synchronization Modes 73
- 80 MHz Source Mode 74
- Other Internal Source Mode 74
- External Source Mode 75
- Clock Routing 76
- 80 MHz Timebase 76
- 20 MHz Timebase 76
- 100 kHz Timebase 76
- Specifications 77
- Module I/O States 80
- Power Requirements 80
- Bus Interface 81
- Physical Characteristics 81
- Environmental 82
- Shock and Vibration 82
- ⬉ᄤֵᙃѻક∵ᶧࠊㅵ⧚ࡲ⊩ ˄Ё 83
- Where to Go for Support 84
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