Measurement-computing Data Acquisition Systems rev.10.4 Manual de usuario Pagina 161
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daqCvtRawDataFormat
Also See: daqAdcSetDataFormat,
daqAdcTransferSetBuffer
Format
daqCvtRawDataFormat(buf, action, lastRetCount, scanCount, chanCount)
Purpose
daqCvtRawDataFormat converts raw data to a specified format.
Parameter Summary
Parameter Type Description
buf PWORD
Pointer to the buffer containing the raw data
action DaqAdcCvtAction
Type of conversion action to perform on the raw data
lastRetCount DWORD
Last value in the retCount parameter returned from the
daqAdcTransferGetStat function
scanCount DWORD
Length of the raw data buffer in scans
chanCount DWORD
Number of channels per scan in the raw data buffer
Parameter Values
buf: a pointer to an array of values from 0 to 65,535.
action: see table below
lastRetCount: valid values range from 1 to 4,294,967,295; however, memory limitations may apply
scanCount: valid values range from 1 to 4,294,967,295; however, memory limitations may apply
chanCount: valid values range from 1 to 72
Parameter Type Definitions
action-(DaqAdcCvtAction)
Definition Description
DacaUnpack
Decompresses raw data
DacaRotate
Reformats a circular buffer into a linear buffer
Returns
DerrNoError No error
Function Usage
For all functions of the form daqCvt..., raw data to be converted must be unsigned
(i.e., the dafUnsigned value must be set using the daqAdcSetScan function).
For T/C and RTD conversion, users of Daq/2000 Series devices* and/or Daq PC Cards must
be sure that the main unit is using ten volt range gains settings, either unipolar (0 V to 10 V)
or bipolar (-5 V to +5 V).
See the “T/C Gains Settings” section in the daqCvtTCConvert function entry for the
appropriate settings.
* Daq/2000 Series devices include DaqBook/2000 Series, DaqScan/2000 Series, DaqLab/2000
Series, and DaqBoard/2000 Series devices.
Programmer’s Manual 908494 Daq API Command Reference 4.3-35
- *372195A-01* 1
- How to use this Manual 3
- 908494 Programmer’s Manual 4
- Table of Contents 5
- Introduction 1 7
- Language Support 8
- Driver Installation 9
- 908494 Programmer’s Manual 10
- Data Acquisition Environment 11
- Signal Environment 12
- 988594 Programmer’s Manual 14
- For x% = 0 To 3 30
- 0, 0, x%, bitVal&) 30
- Next x% 30
- Zero Compensation 33
- Linear Conversion 35
- End Sub 36
- Using Multiple Devices 3 37
- Internal Clock Method 40
- Master Clock Method 41
- External Clock Method 43
- Overview 45
- 938395 Programmer’s Manual 46
- Mask and Flag Definitions 50
- 961 962 963 ... 999 59
- 941 942 ... 958 959 960 59
- Raw Data Formats 81
- Setting the Scan Rate 89
- Scan Rate Mode 89
- Scan Rate State 90
- Actual Scan Rate 90
- 94
- DBK16-Read Offset Trimpot 95
- DBK43-Read Offset Trimpot 96
- Typical flags Settings 100
- Settings 101
- Prototypes 102
- Program References 102
- Function Usage 104
- Visual BASIC 105
- Returns 114
- Data Transfer Progress 115
- Example Acquisition States 116
- DazcNone 124
- DazcAutoZero 124
- Parameter Type Description 129
- Definition Description 129
- Purpose 131
- Offset value to apply 142
- Parameter Values 144
- parameters 148
- Parameter Summary 150
- Parameter Type Definitions 150
- Moving Averages 160
- Definition Description 165
- Using Thermocouples (T/Cs) 172
- T/C Gains Settings 173
- Daq/2000 Series devices* 174
- Setting the Output Mode 184
- Buffer Management 201
- DAC0 DAC1 DAC2 DAC3 P3 DO 202
- DAC0 DAC2 P3 DO 202
- Note 1: 206
- Offset for header in bytes 208
- Update Cycle Data Blocks 211
- Update/Sample Data Format 212
- Output From File Operation 212
- DaqBoard/2000c Series 219
- Setting the DAC Value 227
- 908794 Programmer’s Manual 232
- (continued) 249
- DdiProtocolInfo 251
- DdiExtFeatures 251
- Local I/O 262
- Expansion I/O 262
- Local I/O 266
- 957193 Programmer’s Manual 280
- (for 14 sample settings 282
- 2, 4, 8, 16, 32, 64 282
- 128, etc. up to 16384) 282
- Option Value (optionValue) 284
- Counter Mode 285
- 908594 Programmer’s Manual 286
- Set the Excitation Source 289
- DmotWbk14ExcSrcApply 289
- Sets the Dac Offset 290
- Use DC coupling when 290
- Example: 291
- DcovWbk17Mode_Period 295
- DcovWbk17Mode_Pulsewidth 296
- DcovWbk17Mode_Timing 296
- DcovWbk17Mode_Encoder 296
- Setting the Trigger Level 306
- API Error Codes - daqError 319
- A2 - 162 331
- Programmer’s Manual 332
- Appendix A A 333
- 988294 Programmer’s Manual 334
- 939198 Programmer’s Manual 336
- Custom OEM Installation C 337
- WIN 9x/Me WIN NT/2000/XP 338
- WIN 9x/Me and 338
- WIN NT/2000/XP 338
- Installation Locations: 339
- 958293 Programmer’s Manual 340
- 938295 Programmer’s Manual 342
- Format 347
- Time-of-Day Configuration 356
- Glossary 359
- 986896 Programmer’s Manual 360
- 986896 Glossary G-3 361
- 986896 Glossary G-5 363
- 986896 Glossary G-7 365
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