Measurement-computing TempBook rev.3.0 Manual de usuario Pagina 118
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API Programming Models (TempBook) TempBook User’s Manual
ret& = VBdaqAdcTransferSetBuffer(handle&, buf0%(), BLOCK&, DatmCycleOff& +
DatmUpdateSingle&)
Start the first transfer; the transfer will actually start upon trigger detection. In this case, the following
software trigger will start the transfer:
ret& = VBdaqAdcTransferStart(handle&)
Issue a software trigger command to the hardware to trigger the transfer:
ret& = VBdaqAdcSoftTrig&(handle&)
The next
do
loop swaps the active buffer back and forth from
buf0
to
buf1
and waits for the acquisition
to go inactive or the buffer to fill up. Swapping continues until the transfer goes inactive:
whichBuf& = 0
Do
The following line changes the current buffer:
If whichBuf& = 1 Then whichBuf& = 0 Else whichBuf& = 1
Wait for the acquisition to go inactive or the buffer to be filled:
Do
ret& = VBdaqAdcTransferGetStat(handle&, active&, retCount&)
Loop While ((active& <> 0) And (retCount& < BLOCK&))
If the previous acquisition is still active, start another transfer into the next buffer:
If (active& <> 0) Then
If whichBuf& = 0 Then
ret& = VBdaqAdcTransferSetBuffer(handle&, buf0%(), BLOCK&,
DatmCycleOff& + DatmUpdateSingle&)
ret& = VBdaqAdcTransferStart(handle&)
Otherwise, restart the transfer into the current buffer:
Else
'ret& = VBdaqAdcBufferTransfer(buf1%(0), BLOCK&, 0, 0, 0,
tmpActive&, tmpRetCount&)
ret& = VBdaqAdcTransferSetBuffer(handle&, buf1%(), BLOCK&,
DatmCycleOff& + DatmUpdateSingle&)
ret& = VBdaqAdcTransferStart(handle&)
End If
End If
Send the data into the process buffer,
totals()
:
If (retCount& > 0) Then
Average the readings in the process buffer and print the results:
For j& = 0 To channels& - 1
totals&(j&) = 0
Next j&
For i& = 0 To retCount& - 1
For j& = 0 To channels& - 1
Decide which buffer to add the data from:
If whichBuf& = 0 Then
totals&(j&) = totals&(j&) + buf1%(i& * channels& + j&)
Else
totals&(j&) = totals&(j&) + buf0%(i& * channels& + j&)
End If
Next j&
Next i&
Display the averaged results:
Print "Averages:";
For j& = 0 To channels& - 1
Print Tab(j& * 7 + 17); Format$((5# / 32768#) * totals&(j&) /
retCount&, "#0.000");
Next j&
Print
End If
Continue the do..while loop until the acquisition goes inactive:
Loop While (active& <> 0)
Close the device before exiting:
ret& = VBdaqClose(handle&)
- 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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