Measurement-computing TempBook rev.3.0 Manuel d'utilisateur Page 131
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TempBook User’s Manual daqCommand Reference (
Enhanced
API) 11-7
daqAdcRdN
DLL Function
daqAdcRdN(DaqHandleT handle, DWORD chan, PWORD buf, DWORD scanCount,
DaqAdcTriggerSource triggerSource, BOOL rising, WORD level, FLOAT freq,
DaqAdcGain gain, DWORD flags);
C
daqAdcRdN(DaqHandleT handle, DWORD chan, PWORD buf, DWORD scanCount,
DaqAdcTriggerSource triggerSource, BOOL rising, WORD level, FLOAT freq,
DaqAdcGain gain, DWORD flags);
Visual BASIC
VBdaqAdcRdN&(ByVal handle&, ByVal chan&, buf%(), ByVal scanCount&, ByVal
triggerSource&, ByVal rising&, ByVal level%, ByVal freq!, ByVal gain&, ByVal
flags&)
Delphi
daqAdcRdN(handle:DaqHandleT; chan:DWORD; buf:PWORD; scanCount:DWORD;
triggerSource:DaqAdcTriggerSource; rising:longbool; level:WORD; freq:single;
const gain:DaqAdcGain; flags:DWORD)
Parameters
handle
Handle to the device for which the ADC channel samples are to be acquired
chan
A single channel number
buf
An array where the A/D scans will be returned
scanCount
The number of scans to be taken
Valid values:
1 - 32767
triggerSource
The trigger source
rising
Boolean flag to indicate the rising or falling edge for the trigger source
level
The trigger level if an analog trigger is specified
Valid values:
0 -4095
freq
The sampling frequency in Hz (
100000.0 to 0.0002
)
gain
The channel gain
flags
Channel configuration flags in the form of a bit mask
Returns
DerrFIFOFull
- Buffer overrun
DerrInvGain
-Invalid gain
DerrIncChan
- Invalid channel
DerrInvTrigSource
- Invalid trigger
DerrInvLevel
- Invalid level (also, refer to
API Error Codes
on page 11-39)
See Also
daqAdcSetFreq, daqAdcSetMux, daqAdcSetClock, daqAdcSetTrig
Program References
None
Used With
All devices
daqAdcRdN
is used to take multiple scans from a single A/D channel. This function will:
•
Configure the pacer clock
•
Configure all channels with the specified
gain
parameter
•
Configure all channel options with the channel
flags
specified
•
Arm the trigger
•
Acquire
count
scans from the specified A/D channel
See ADC Flags Definition table (in ADC Miscellaneous Definitions) for channel
flags
parameter definition.
- User’s Manual 1
- TempBook/66-901 2
- How To Use This Manual 3
- Table of Contents 4
- 5 Programmer’s Guide 5
- 8 Thermocouple Measurement 5
- 6
- Introduction and Quick Start 7
- Available Accessories 8
- Specifications 8
- Quick Start 9
- Power Connection 10
- Software Installation 10
- Inspection 11
- TempBook Termination Card 12
- Analog Signal Connection 12
- Internal Configuration 13
- Hardware Installation 13
- Charging the Battery Modules 14
- Parallel Port Capabilities 15
- Resource Tests 17
- Performance Tests 17
- Connection Troubleshooting 18
- Calibration of TempBook 18
- Using TempView 19
- TempView Components 20
- Acquisition Configuration 21
- Counter/Timer Window 22
- Digital I/O Window 22
- TempView Menu Items 23
- Select Device 24
- Acquisition 24
- Using PostView 25
- PostView Toolbar Items 26
- 11-16-00 27
- The PostView Timebase 28
- Data File Accessibility 28
- Programmer's Guide 29
- Data Acquisition 30
- Program Flowchart 30
- Driver Options 31
- High-Level Analog Input 33
- Low-Level Analog Input 34
- High-Speed Digital Input 36
- Counter/Timer Functions 37
- Thermocouple Linearization 39
- Sample Programs 40
- General Purpose Digital I/O 43
- Counter Timer Functions 45
- Software Calibration 51
- Calibration Example 52
- Zero Compensation 53
- Zero Compensation Example 54
- Automatic Zero Compensation 55
- Thermocouple Measurement 57
- Single-Channel Measurement ( 59
- General Functions 62
- Thermocouple 93
- API Error Codes - C Languages 93
- API Error Codes - QuickBASIC 94
- Data Acquisition Environment 97
- Basic Models 98
- Enhanced 100
- TempBook User’s Manual 101
- 10-10 106
- 10-12 108
- 10-14 110
- Background Acquisition 112
- Finally, close the device: 113
- 10-18 114
- 10-20 116
- Double Buffering 117
- 10-22 118
- Direct-to-Disk Transfers 119
- 10-24 120
- 10-26 122
- Overview 125
- API Reference Tables 159
- Event-Handling Definitions 160
- ADC Miscellaneous Definitions 161
- TempBook Definitions 162
- General I/O Definitions 162
- Command Definitions 162
- API Error Codes 163
- Appendix 165
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